Bitcoin Private (BTCP) - List Wiki

Horizen

Horizen is an inclusive ecosystem built on its massively scalable blockchain platform where everyone is empowered and rewarded for their contributions. Launched in 2017, our leading-edge platform enables real-life uses outside of our cryptocurrency, ZEN.
[link]

Loopring: zkRollup Protocol for Scalable DEXes and Payments on Ethereum

Loopring is an Ethereum layer 2 solution: an open protocol for building high-performance, non-custodial exchanges and payment applications on Ethereum. Our infrastructure leverages zkSNARKs to scale throughput, lower cost, and build DEXs & payment apps that feel as performant as centralized alternatives - with 100% Ethereum security guarantees.
[link]

ZenSys Archive (Use /r/Horizen!)

Please use our new /Horizen Subreddit ZenCash is a private, decentralized, and reliable platform for communications, transactions, and publishing. In production using zero-knowledge proofs for anonymous transactions with an encrypted memo field stored on the ZenCash blockchain.
[link]

Dragonchain Great Reddit Scaling Bake-Off Public Proposal

Dragonchain Great Reddit Scaling Bake-Off Public Proposal

Dragonchain Public Proposal TL;DR:

Dragonchain has demonstrated twice Reddit’s entire total daily volume (votes, comments, and posts per Reddit 2019 Year in Review) in a 24-hour demo on an operational network. Every single transaction on Dragonchain is decentralized immediately through 5 levels of Dragon Net, and then secured with combined proof on Bitcoin, Ethereum, Ethereum Classic, and Binance Chain, via Interchain. At the time, in January 2020, the entire cost of the demo was approximately $25K on a single system (transaction fees locked at $0.0001/txn). With current fees (lowest fee $0.0000025/txn), this would cost as little as $625.
Watch Joe walk through the entire proposal and answer questions on YouTube.
This proposal is also available on the Dragonchain blog.

Hello Reddit and Ethereum community!

I’m Joe Roets, Founder & CEO of Dragonchain. When the team and I first heard about The Great Reddit Scaling Bake-Off we were intrigued. We believe we have the solutions Reddit seeks for its community points system and we have them at scale.
For your consideration, we have submitted our proposal below. The team at Dragonchain and I welcome and look forward to your technical questions, philosophical feedback, and fair criticism, to build a scaling solution for Reddit that will empower its users. Because our architecture is unlike other blockchain platforms out there today, we expect to receive many questions while people try to grasp our project. I will answer all questions here in this thread on Reddit, and I've answered some questions in the stream on YouTube.
We have seen good discussions so far in the competition. We hope that Reddit’s scaling solution will emerge from The Great Reddit Scaling Bake-Off and that Reddit will have great success with the implementation.

Executive summary

Dragonchain is a robust open source hybrid blockchain platform that has proven to withstand the passing of time since our inception in 2014. We have continued to evolve to harness the scalability of private nodes, yet take full advantage of the security of public decentralized networks, like Ethereum. We have a live, operational, and fully functional Interchain network integrating Bitcoin, Ethereum, Ethereum Classic, and ~700 independent Dragonchain nodes. Every transaction is secured to Ethereum, Bitcoin, and Ethereum Classic. Transactions are immediately usable on chain, and the first decentralization is seen within 20 seconds on Dragon Net. Security increases further to public networks ETH, BTC, and ETC within 10 minutes to 2 hours. Smart contracts can be written in any executable language, offering full freedom to existing developers. We invite any developer to watch the demo, play with our SDK’s, review open source code, and to help us move forward. Dragonchain specializes in scalable loyalty & rewards solutions and has built a decentralized social network on chain, with very affordable transaction costs. This experience can be combined with the insights Reddit and the Ethereum community have gained in the past couple of months to roll out the solution at a rapid pace.

Response and PoC

In The Great Reddit Scaling Bake-Off post, Reddit has asked for a series of demonstrations, requirements, and other considerations. In this section, we will attempt to answer all of these requests.

Live Demo

A live proof of concept showing hundreds of thousands of transactions
On Jan 7, 2020, Dragonchain hosted a 24-hour live demonstration during which a quarter of a billion (250 million+) transactions executed fully on an operational network. Every single transaction on Dragonchain is decentralized immediately through 5 levels of Dragon Net, and then secured with combined proof on Bitcoin, Ethereum, Ethereum Classic, and Binance Chain, via Interchain. This means that every single transaction is secured by, and traceable to these networks. An attack on this system would require a simultaneous attack on all of the Interchained networks.
24 hours in 4 minutes (YouTube):
24 hours in 4 minutes
The demonstration was of a single business system, and any user is able to scale this further, by running multiple systems simultaneously. Our goals for the event were to demonstrate a consistent capacity greater than that of Visa over an extended time period.
Tooling to reproduce our demo is available here:
https://github.com/dragonchain/spirit-bomb

Source Code

Source code (for on & off-chain components as well tooling used for the PoC). The source code does not have to be shared publicly, but if Reddit decides to use a particular solution it will need to be shared with Reddit at some point.

Scaling

How it works & scales

Architectural Scaling

Dragonchain’s architecture attacks the scalability issue from multiple angles. Dragonchain is a hybrid blockchain platform, wherein every transaction is protected on a business node to the requirements of that business or purpose. A business node may be held completely private or may be exposed or replicated to any level of exposure desired.
Every node has its own blockchain and is independently scalable. Dragonchain established Context Based Verification as its consensus model. Every transaction is immediately usable on a trust basis, and in time is provable to an increasing level of decentralized consensus. A transaction will have a level of decentralization to independently owned and deployed Dragonchain nodes (~700 nodes) within seconds, and full decentralization to BTC and ETH within minutes or hours. Level 5 nodes (Interchain nodes) function to secure all transactions to public or otherwise external chains such as Bitcoin and Ethereum. These nodes scale the system by aggregating multiple blocks into a single Interchain transaction on a cadence. This timing is configurable based upon average fees for each respective chain. For detailed information about Dragonchain’s architecture, and Context Based Verification, please refer to the Dragonchain Architecture Document.

Economic Scaling

An interesting feature of Dragonchain’s network consensus is its economics and scarcity model. Since Dragon Net nodes (L2-L4) are independent staking nodes, deployment to cloud platforms would allow any of these nodes to scale to take on a large percentage of the verification work. This is great for scalability, but not good for the economy, because there is no scarcity, and pricing would develop a downward spiral and result in fewer verification nodes. For this reason, Dragonchain uses TIME as scarcity.
TIME is calculated as the number of Dragons held, multiplied by the number of days held. TIME influences the user’s access to features within the Dragonchain ecosystem. It takes into account both the Dragon balance and length of time each Dragon is held. TIME is staked by users against every verification node and dictates how much of the transaction fees are awarded to each participating node for every block.
TIME also dictates the transaction fee itself for the business node. TIME is staked against a business node to set a deterministic transaction fee level (see transaction fee table below in Cost section). This is very interesting in a discussion about scaling because it guarantees independence for business implementation. No matter how much traffic appears on the entire network, a business is guaranteed to not see an increased transaction fee rate.

Scaled Deployment

Dragonchain uses Docker and Kubernetes to allow the use of best practices traditional system scaling. Dragonchain offers managed nodes with an easy to use web based console interface. The user may also deploy a Dragonchain node within their own datacenter or favorite cloud platform. Users have deployed Dragonchain nodes on-prem on Amazon AWS, Google Cloud, MS Azure, and other hosting platforms around the world. Any executable code, anything you can write, can be written into a smart contract. This flexibility is what allows us to say that developers with no blockchain experience can use any code language to access the benefits of blockchain. Customers have used NodeJS, Python, Java, and even BASH shell script to write smart contracts on Dragonchain.
With Docker containers, we achieve better separation of concerns, faster deployment, higher reliability, and lower response times.
We chose Kubernetes for its self-healing features, ability to run multiple services on one server, and its large and thriving development community. It is resilient, scalable, and automated. OpenFaaS allows us to package smart contracts as Docker images for easy deployment.
Contract deployment time is now bounded only by the size of the Docker image being deployed but remains fast even for reasonably large images. We also take advantage of Docker’s flexibility and its ability to support any language that can run on x86 architecture. Any image, public or private, can be run as a smart contract using Dragonchain.

Flexibility in Scaling

Dragonchain’s architecture considers interoperability and integration as key features. From inception, we had a goal to increase adoption via integration with real business use cases and traditional systems.
We envision the ability for Reddit, in the future, to be able to integrate alternate content storage platforms or other financial services along with the token.
  • LBRY - To allow users to deploy content natively to LBRY
  • MakerDAO to allow users to lend small amounts backed by their Reddit community points.
  • STORJ/SIA to allow decentralized on chain storage of portions of content. These integrations or any other are relatively easy to integrate on Dragonchain with an Interchain implementation.

Cost

Cost estimates (on-chain and off-chain) For the purpose of this proposal, we assume that all transactions are on chain (posts, replies, and votes).
On the Dragonchain network, transaction costs are deterministic/predictable. By staking TIME on the business node (as described above) Reddit can reduce transaction costs to as low as $0.0000025 per transaction.
Dragonchain Fees Table

Getting Started

How to run it
Building on Dragonchain is simple and requires no blockchain experience. Spin up a business node (L1) in our managed environment (AWS), run it in your own cloud environment, or on-prem in your own datacenter. Clear documentation will walk you through the steps of spinning up your first Dragonchain Level 1 Business node.
Getting started is easy...
  1. Download Dragonchain’s dctl
  2. Input three commands into a terminal
  3. Build an image
  4. Run it
More information can be found in our Get started documents.

Architecture
Dragonchain is an open source hybrid platform. Through Dragon Net, each chain combines the power of a public blockchain (like Ethereum) with the privacy of a private blockchain.
Dragonchain organizes its network into five separate levels. A Level 1, or business node, is a totally private blockchain only accessible through the use of public/private keypairs. All business logic, including smart contracts, can be executed on this node directly and added to the chain.
After creating a block, the Level 1 business node broadcasts a version stripped of sensitive private data to Dragon Net. Three Level 2 Validating nodes validate the transaction based on guidelines determined from the business. A Level 3 Diversity node checks that the level 2 nodes are from a diverse array of locations. A Level 4 Notary node, hosted by a KYC partner, then signs the validation record received from the Level 3 node. The transaction hash is ledgered to the Level 5 public chain to take advantage of the hash power of massive public networks.
Dragon Net can be thought of as a “blockchain of blockchains”, where every level is a complete private blockchain. Because an L1 can send to multiple nodes on a single level, proof of existence is distributed among many places in the network. Eventually, proof of existence reaches level 5 and is published on a public network.

API Documentation

APIs (on chain & off)

SDK Source

Nobody’s Perfect

Known issues or tradeoffs
  • Dragonchain is open source and even though the platform is easy enough for developers to code in any language they are comfortable with, we do not have so large a developer community as Ethereum. We would like to see the Ethereum developer community (and any other communities) become familiar with our SDK’s, our solutions, and our platform, to unlock the full potential of our Ethereum Interchain. Long ago we decided to prioritize both Bitcoin and Ethereum Interchains. We envision an ecosystem that encompasses different projects to give developers the ability to take full advantage of all the opportunities blockchain offers to create decentralized solutions not only for Reddit but for all of our current platforms and systems. We believe that together we will take the adoption of blockchain further. We currently have additional Interchain with Ethereum Classic. We look forward to Interchain with other blockchains in the future. We invite all blockchains projects who believe in decentralization and security to Interchain with Dragonchain.
  • While we only have 700 nodes compared to 8,000 Ethereum and 10,000 Bitcoin nodes. We harness those 18,000 nodes to scale to extremely high levels of security. See Dragonchain metrics.
  • Some may consider the centralization of Dragonchain’s business nodes as an issue at first glance, however, the model is by design to protect business data. We do not consider this a drawback as these nodes can make any, none, or all data public. Depending upon the implementation, every subreddit could have control of its own business node, for potential business and enterprise offerings, bringing new alternative revenue streams to Reddit.

Costs and resources

Summary of cost & resource information for both on-chain & off-chain components used in the PoC, as well as cost & resource estimates for further scaling. If your PoC is not on mainnet, make note of any mainnet caveats (such as congestion issues).
Every transaction on the PoC system had a transaction fee of $0.0001 (one-hundredth of a cent USD). At 256MM transactions, the demo cost $25,600. With current operational fees, the same demonstration would cost $640 USD.
For the demonstration, to achieve throughput to mimic a worldwide payments network, we modeled several clients in AWS and 4-5 business nodes to handle the traffic. The business nodes were tuned to handle higher throughput by adjusting memory and machine footprint on AWS. This flexibility is valuable to implementing a system such as envisioned by Reddit. Given that Reddit’s daily traffic (posts, replies, and votes) is less than half that of our demo, we would expect that the entire Reddit system could be handled on 2-5 business nodes using right-sized containers on AWS or similar environments.
Verification was accomplished on the operational Dragon Net network with over 700 independently owned verification nodes running around the world at no cost to the business other than paid transaction fees.

Requirements

Scaling

This PoC should scale to the numbers below with minimal costs (both on & off-chain). There should also be a clear path to supporting hundreds of millions of users.
Over a 5 day period, your scaling PoC should be able to handle:
*100,000 point claims (minting & distributing points) *25,000 subscriptions *75,000 one-off points burning *100,000 transfers
During Dragonchain’s 24 hour demo, the above required numbers were reached within the first few minutes.
Reddit’s total activity is 9000% more than Ethereum’s total transaction level. Even if you do not include votes, it is still 700% more than Ethereum’s current volume. Dragonchain has demonstrated that it can handle 250 million transactions a day, and it’s architecture allows for multiple systems to work at that level simultaneously. In our PoC, we demonstrate double the full capacity of Reddit, and every transaction was proven all the way to Bitcoin and Ethereum.
Reddit Scaling on Ethereum

Decentralization

Solutions should not depend on any single third-party provider. We prefer solutions that do not depend on specific entities such as Reddit or another provider, and solutions with no single point of control or failure in off-chain components but recognize there are numerous trade-offs to consider
Dragonchain’s architecture calls for a hybrid approach. Private business nodes hold the sensitive data while the validation and verification of transactions for the business are decentralized within seconds and secured to public blockchains within 10 minutes to 2 hours. Nodes could potentially be controlled by owners of individual subreddits for more organic decentralization.
  • Billing is currently centralized - there is a path to federation and decentralization of a scaled billing solution.
  • Operational multi-cloud
  • Operational on-premises capabilities
  • Operational deployment to any datacenter
  • Over 700 independent Community Verification Nodes with proof of ownership
  • Operational Interchain (Interoperable to Bitcoin, Ethereum, and Ethereum Classic, open to more)

Usability Scaling solutions should have a simple end user experience.

Users shouldn't have to maintain any extra state/proofs, regularly monitor activity, keep track of extra keys, or sign anything other than their normal transactions
Dragonchain and its customers have demonstrated extraordinary usability as a feature in many applications, where users do not need to know that the system is backed by a live blockchain. Lyceum is one of these examples, where the progress of academy courses is being tracked, and successful completion of courses is rewarded with certificates on chain. Our @Save_The_Tweet bot is popular on Twitter. When used with one of the following hashtags - #please, #blockchain, #ThankYou, or #eternalize the tweet is saved through Eternal to multiple blockchains. A proof report is available for future reference. Other examples in use are DEN, our decentralized social media platform, and our console, where users can track their node rewards, view their TIME, and operate a business node.
Examples:

Transactions complete in a reasonable amount of time (seconds or minutes, not hours or days)
All transactions are immediately usable on chain by the system. A transaction begins the path to decentralization at the conclusion of a 5-second block when it gets distributed across 5 separate community run nodes. Full decentralization occurs within 10 minutes to 2 hours depending on which interchain (Bitcoin, Ethereum, or Ethereum Classic) the transaction hits first. Within approximately 2 hours, the combined hash power of all interchained blockchains secures the transaction.

Free to use for end users (no gas fees, or fixed/minimal fees that Reddit can pay on their behalf)
With transaction pricing as low as $0.0000025 per transaction, it may be considered reasonable for Reddit to cover transaction fees for users.
All of Reddit's Transactions on Blockchain (month)
Community points can be earned by users and distributed directly to their Reddit account in batch (as per Reddit minting plan), and allow users to withdraw rewards to their Ethereum wallet whenever they wish. Withdrawal fees can be paid by either user or Reddit. This model has been operating inside the Dragonchain system since 2018, and many security and financial compliance features can be optionally added. We feel that this capability greatly enhances user experience because it is seamless to a regular user without cryptocurrency experience, yet flexible to a tech savvy user. With regard to currency or token transactions, these would occur on the Reddit network, verified to BTC and ETH. These transactions would incur the $0.0000025 transaction fee. To estimate this fee we use the monthly active Reddit users statista with a 60% adoption rate and an estimated 10 transactions per month average resulting in an approximate $720 cost across the system. Reddit could feasibly incur all associated internal network charges (mining/minting, transfer, burn) as these are very low and controllable fees.
Reddit Internal Token Transaction Fees

Reddit Ethereum Token Transaction Fees
When we consider further the Ethereum fees that might be incurred, we have a few choices for a solution.
  1. Offload all Ethereum transaction fees (user withdrawals) to interested users as they wish to withdraw tokens for external use or sale.
  2. Cover Ethereum transaction fees by aggregating them on a timed schedule. Users would request withdrawal (from Reddit or individual subreddits), and they would be transacted on the Ethereum network every hour (or some other schedule).
  3. In a combination of the above, customers could cover aggregated fees.
  4. Integrate with alternate Ethereum roll up solutions or other proposals to aggregate minting and distribution transactions onto Ethereum.

Bonus Points

Users should be able to view their balances & transactions via a blockchain explorer-style interface
From interfaces for users who have no knowledge of blockchain technology to users who are well versed in blockchain terms such as those present in a typical block explorer, a system powered by Dragonchain has flexibility on how to provide balances and transaction data to users. Transactions can be made viewable in an Eternal Proof Report, which displays raw data along with TIME staking information and traceability all the way to Bitcoin, Ethereum, and every other Interchained network. The report shows fields such as transaction ID, timestamp, block ID, multiple verifications, and Interchain proof. See example here.
Node payouts within the Dragonchain console are listed in chronological order and can be further seen in either Dragons or USD. See example here.
In our social media platform, Dragon Den, users can see, in real-time, their NRG and MTR balances. See example here.
A new influencer app powered by Dragonchain, Raiinmaker, breaks down data into a user friendly interface that shows coin portfolio, redeemed rewards, and social scores per campaign. See example here.

Exiting is fast & simple
Withdrawing funds on Dragonchain’s console requires three clicks, however, withdrawal scenarios with more enhanced security features per Reddit’s discretion are obtainable.

Interoperability Compatibility with third party apps (wallets/contracts/etc) is necessary.
Proven interoperability at scale that surpasses the required specifications. Our entire platform consists of interoperable blockchains connected to each other and traditional systems. APIs are well documented. Third party permissions are possible with a simple smart contract without the end user being aware. No need to learn any specialized proprietary language. Any code base (not subsets) is usable within a Docker container. Interoperable with any blockchain or traditional APIs. We’ve witnessed relatively complex systems built by engineers with no blockchain or cryptocurrency experience. We’ve also demonstrated the creation of smart contracts within minutes built with BASH shell and Node.js. Please see our source code and API documentation.

Scaling solutions should be extensible and allow third parties to build on top of it Open source and extensible
APIs should be well documented and stable

Documentation should be clear and complete
For full documentation, explore our docs, SDK’s, Github repo’s, architecture documents, original Disney documentation, and other links or resources provided in this proposal.

Third-party permissionless integrations should be possible & straightforward Smart contracts are Docker based, can be written in any language, use full language (not subsets), and can therefore be integrated with any system including traditional system APIs. Simple is better. Learning an uncommon or proprietary language should not be necessary.
Advanced knowledge of mathematics, cryptography, or L2 scaling should not be required. Compatibility with common utilities & toolchains is expected.
Dragonchain business nodes and smart contracts leverage Docker to allow the use of literally any language or executable code. No proprietary language is necessary. We’ve witnessed relatively complex systems built by engineers with no blockchain or cryptocurrency experience. We’ve also demonstrated the creation of smart contracts within minutes built with BASH shell and Node.js.

Bonus

Bonus Points: Show us how it works. Do you have an idea for a cool new use case for Community Points? Build it!

TIME

Community points could be awarded to Reddit users based upon TIME too, whereas the longer someone is part of a subreddit, the more community points someone naturally gained, even if not actively commenting or sharing new posts. A daily login could be required for these community points to be credited. This grants awards to readers too and incentivizes readers to create an account on Reddit if they browse the website often. This concept could also be leveraged to provide some level of reputation based upon duration and consistency of contribution to a community subreddit.

Dragon Den

Dragonchain has already built a social media platform that harnesses community involvement. Dragon Den is a decentralized community built on the Dragonchain blockchain platform. Dragon Den is Dragonchain’s answer to fake news, trolling, and censorship. It incentivizes the creation and evaluation of quality content within communities. It could be described as being a shareholder of a subreddit or Reddit in its entirety. The more your subreddit is thriving, the more rewarding it will be. Den is currently in a public beta and in active development, though the real token economy is not live yet. There are different tokens for various purposes. Two tokens are Lair Ownership Rights (LOR) and Lair Ownership Tokens (LOT). LOT is a non-fungible token for ownership of a specific Lair. LOT will only be created and converted from LOR.
Energy (NRG) and Matter (MTR) work jointly. Your MTR determines how much NRG you receive in a 24-hour period. Providing quality content, or evaluating content will earn MTR.

Security. Users have full ownership & control of their points.
All community points awarded based upon any type of activity or gift, are secured and provable to all Interchain networks (currently BTC, ETH, ETC). Users are free to spend and withdraw their points as they please, depending on the features Reddit wants to bring into production.

Balances and transactions cannot be forged, manipulated, or blocked by Reddit or anyone else
Users can withdraw their balance to their ERC20 wallet, directly through Reddit. Reddit can cover the fees on their behalf, or the user covers this with a portion of their balance.

Users should own their points and be able to get on-chain ERC20 tokens without permission from anyone else
Through our console users can withdraw their ERC20 rewards. This can be achieved on Reddit too. Here is a walkthrough of our console, though this does not show the quick withdrawal functionality, a user can withdraw at any time. https://www.youtube.com/watch?v=aNlTMxnfVHw

Points should be recoverable to on-chain ERC20 tokens even if all third-parties involved go offline
If necessary, signed transactions from the Reddit system (e.g. Reddit + Subreddit) can be sent to the Ethereum smart contract for minting.

A public, third-party review attesting to the soundness of the design should be available
To our knowledge, at least two large corporations, including a top 3 accounting firm, have conducted positive reviews. These reviews have never been made public, as Dragonchain did not pay or contract for these studies to be released.

Bonus points
Public, third-party implementation review available or in progress
See above

Compatibility with HSMs & hardware wallets
For the purpose of this proposal, all tokenization would be on the Ethereum network using standard token contracts and as such, would be able to leverage all hardware wallet and Ethereum ecosystem services.

Other Considerations

Minting/distributing tokens is not performed by Reddit directly
This operation can be automated by smart contract on Ethereum. Subreddits can if desired have a role to play.

One off point burning, as well as recurring, non-interactive point burning (for subreddit memberships) should be possible and scalable
This is possible and scalable with interaction between Dragonchain Reddit system and Ethereum token contract(s).

Fully open-source solutions are strongly preferred
Dragonchain is fully open source (see section on Disney release after conclusion).

Conclusion

Whether it is today, or in the future, we would like to work together to bring secure flexibility to the highest standards. It is our hope to be considered by Ethereum, Reddit, and other integrative solutions so we may further discuss the possibilities of implementation. In our public demonstration, 256 million transactions were handled in our operational network on chain in 24 hours, for the low cost of $25K, which if run today would cost $625. Dragonchain’s interoperable foundation provides the atmosphere necessary to implement a frictionless community points system. Thank you for your consideration of our proposal. We look forward to working with the community to make something great!

Disney Releases Blockchain Platform as Open Source

The team at Disney created the Disney Private Blockchain Platform. The system was a hybrid interoperable blockchain platform for ledgering and smart contract development geared toward solving problems with blockchain adoption and usability. All objective evaluation would consider the team’s output a success. We released a list of use cases that we explored in some capacity at Disney, and our input on blockchain standardization as part of our participation in the W3C Blockchain Community Group.
https://lists.w3.org/Archives/Public/public-blockchain/2016May/0052.html

Open Source

In 2016, Roets proposed to release the platform as open source to spread the technology outside of Disney, as others within the W3C group were interested in the solutions that had been created inside of Disney.
Following a long process, step by step, the team met requirements for release. Among the requirements, the team had to:
  • Obtain VP support and approval for the release
  • Verify ownership of the software to be released
  • Verify that no proprietary content would be released
  • Convince the organization that there was a value to the open source community
  • Convince the organization that there was a value to Disney
  • Offer the plan for ongoing maintenance of the project outside of Disney
  • Itemize competing projects
  • Verify no conflict of interest
  • Preferred license
  • Change the project name to not use the name Disney, any Disney character, or any other associated IP - proposed Dragonchain - approved
  • Obtain legal approval
  • Approval from corporate, parks, and other business units
  • Approval from multiple Disney patent groups Copyright holder defined by Disney (Disney Connected and Advanced Technologies)
  • Trademark searches conducted for the selected name Dragonchain
  • Obtain IT security approval
  • Manual review of OSS components conducted
  • OWASP Dependency and Vulnerability Check Conducted
  • Obtain technical (software) approval
  • Offer management, process, and financial plans for the maintenance of the project.
  • Meet list of items to be addressed before release
  • Remove all Disney project references and scripts
  • Create a public distribution list for email communications
  • Remove Roets’ direct and internal contact information
  • Create public Slack channel and move from Disney slack channels
  • Create proper labels for issue tracking
  • Rename internal private Github repository
  • Add informative description to Github page
  • Expand README.md with more specific information
  • Add information beyond current “Blockchains are Magic”
  • Add getting started sections and info on cloning/forking the project
  • Add installation details
  • Add uninstall process
  • Add unit, functional, and integration test information
  • Detail how to contribute and get involved
  • Describe the git workflow that the project will use
  • Move to public, non-Disney git repository (Github or Bitbucket)
  • Obtain Disney Open Source Committee approval for release
On top of meeting the above criteria, as part of the process, the maintainer of the project had to receive the codebase on their own personal email and create accounts for maintenance (e.g. Github) with non-Disney accounts. Given the fact that the project spanned multiple business units, Roets was individually responsible for its ongoing maintenance. Because of this, he proposed in the open source application to create a non-profit organization to hold the IP and maintain the project. This was approved by Disney.
The Disney Open Source Committee approved the application known as OSSRELEASE-10, and the code was released on October 2, 2016. Disney decided to not issue a press release.
Original OSSRELASE-10 document

Dragonchain Foundation

The Dragonchain Foundation was created on January 17, 2017. https://den.social/l/Dragonchain/24130078352e485d96d2125082151cf0/dragonchain-and-disney/
submitted by j0j0r0 to ethereum [link] [comments]

Crypto-Powered: Understanding Bitcoin, Ethereum, and DeFi

Crypto-Powered: Understanding Bitcoin, Ethereum, and DeFi
Until one understands the basics of this tech, they won’t be able to grasp or appreciate the impact it has on our digital bank, Genesis Block.
https://reddit.com/link/ho4bif/video/n0euarkifu951/player
This is the second post of Crypto-Powered — a new series that examines what it means for Genesis Block to be a digital bank that’s powered by crypto, blockchain, and decentralized protocols.
---
Our previous post set the stage for this series. We discussed the state of consumer finance and how the success of today’s high-flying fintech unicorns will be short-lived as long as they’re building on legacy finance — a weak foundation that is ripe for massive disruption.
Instead, the future of consumer finance belongs to those who are deeply familiar with blockchain tech & decentralized protocols, build on it as the foundation, and know how to take it to the world. Like Genesis Block.
Today we begin our journey down the crypto rabbit hole. This post will be an important introduction for those still learning about Bitcoin, Ethereum, or DeFi (Decentralized Finance). This post (and the next few) will go into greater detail about how this technology gives Genesis Block an edge, a superpower, and an unfair advantage. Let’s dive in…
https://preview.redd.it/1ugdxoqjfu951.jpg?width=650&format=pjpg&auto=webp&s=36edde1079c3cff5f6b15b8cd30e6c436626d5d8

Bitcoin: The First Cryptocurrency

There are plenty of online resources to learn about Bitcoin (Coinbase, Binance, Gemini, Naval, Alex Gladstein, Marc Andreessen, Chris Dixon). I don’t wanna spend a lot of time on that here, but let’s do a quick overview for those still getting ramped up.
Cryptocurrency is the most popular use-case of blockchain technology today. And Bitcoin was the first cryptocurrency to be invented.
Bitcoin is the most decentralized of all crypto assets today — no government, company, or third party can control or censor it.
Bitcoin has two primary features (as do most other cryptocurrencies):
  1. Send Value You can send value to anyone, anywhere in the world. Nobody can intercept, delay or stop it — not even governments or financial institutions. Unlike with traditional money transfers or bank wires, there are no layers of middlemen. This results in a process that is much more cost-efficient. Some popular use-cases include remittances and cross-border payments.
  2. Store Value With nothing but a smartphone, you can become your own bank and store your own funds. Nobody can seize your assets. The funds are digital and stored on a blockchain. Your money no longer needs to be stored at a bank, in a vault, or under your mattress. I covered a few inspiring use-cases in a previous post. They include banking the unbanked, protecting assets from government seizure, mitigating the risk of a bank run, and protection against hyperinflation (like what recently happened in Venezuela).
The fact that there are so few things one can do with Bitcoin is one of its greatest strengths.
Its design is simple, elegant, and focused. It has been 10+ years since Satoshi’s white paper and no one has been able to crack or hack the Bitcoin network. With a market cap of $170B, there is plenty of incentive to try.
https://preview.redd.it/bizndfpkfu951.png?width=800&format=png&auto=webp&s=456c53b798248e60456a65835a33c69b2fe8daf0

Public Awareness

A few negative moments in Bitcoin’s history include the collapse of Mt. Gox — which resulted in hundreds of millions of customer funds being stolen — as well as Bitcoin’s role in dark markets like Silk Road — where Bitcoin arguably found its initial userbase.
However, like most breakthrough technology, Bitcoin is neither good nor bad. It’s neutral. People can use it for good or they can use it for evil. Thankfully, it’s being used less and less for illicit activity. Criminals are starting to understand that transactions on a blockchain are public and traceable — it’s exactly the type of system they usually try to avoid. And it’s true, at this point “a lot more” crimes are actually committed with fiat than crypto.
As a result, the perception of bitcoin and cryptocurrency has been changing over the years to a more positive light.
Bitcoin has even started to enter the world of media & entertainment. It’s been mentioned in Hollywood films like Spiderman: Into the Spider-Verse and in songs from major artists like Eminem. It’s been mentioned in countless TV shows like Billions, The Simpsons, Big Bang Theory, Gray’s Anatomy, Family Guy, and more.
As covid19 has ravaged economies and central banks have been printing money, Bitcoin has caught the attention of many legendary Wall Street investors like Paul Tudor Jones, saying that Bitcoin is a great bet against inflation (reminding him of Gold in the 1970s).
Cash App already lets their 25M users buy Bitcoin. It’s rumored that PayPal and Venmo will soon let their 325M users start buying Bitcoin. Bitcoin is by far the most dominant cryptocurrency and is showing no signs of slowing down. For more than a decade it has delivered on its core use-cases — being able to send or store value.
At this point, Bitcoin has very much entered the zeitgeist of modern pop culture — at least in the West.
https://preview.redd.it/dnuwbw8mfu951.png?width=800&format=png&auto=webp&s=6f1f135e3effee4574b5167901b80ced2c972bda

Ethereum: Programmable Money

When Ethereum launched in 2015, it opened up a world of new possibilities and use-cases for crypto. With Ethereum Smart Contracts (i.e. applications), this exciting new digital money (cryptocurrency) became a lot less dumb. Developers could now build applications that go beyond the simple use-cases of “send value” & “store value.” They could program cryptocurrency to have rules, behavior, and logic to respond to different inputs. And always enforced by code. Additional reading on Ethereum from Linda Xie or Vitalik Buterin.
Because these applications are built on blockchain technology (Ethereum), they preserve many of the same characteristics as Bitcoin: no one can stop, censor or shut down these apps because they are decentralized.
One of the first major use-cases on Ethereum was the ability to mint and create your own token, your own cryptocurrency. Many companies used this as a way to fundraise from the public. This led to the 2017 ICO bubble (Initial Coin Offerings). Some tokens — and the apps/networks they powered — were fascinating and innovative. Most tokens were pointless. And many tokens were outright scams. Additional token reading from Fred Ehrsam, Balaji, and Naval.
https://reddit.com/link/ho4bif/video/b5b1jh9ofu951/player

Digital Gold Rush

Just as tokens grew in popularity in 2017–2018, so did online marketplaces where these tokens could be bought, sold, and traded. This was a fledgling asset class — the merchants selling picks, axes, and shovels were finally starting to emerge.
I had a front-row seat — both as an investor and token creator. This was the Wild West with all the frontier drama & scandal that you’d expect.
Binance — now the world’s largest crypto exchange —was launched during this time. They along with many others (especially from Asia) made it really easy for speculators, traders, and degenerate gamblers to participate in these markets. Similar to other financial markets, the goal was straightforward: buy low and sell high.
https://preview.redd.it/tytsu5jnfu951.jpg?width=600&format=pjpg&auto=webp&s=fe3425b7e4a71fa953b953f0c7f6eaff6504a0d1
That period left an embarrassing stain on our industry that we’ve still been trying to recover from. It was a period rampant with market manipulation, pump-and-dumps, and scams. To some extent, the crypto industry still suffers from that today, but it’s nothing compared to what it was then.
While the potential of getting filthy rich brought a lot of fly-by-nighters and charlatans into the industry, it also brought a lot of innovators, entrepreneurs, and builders.
The launch and growth of Ethereum has been an incredible technological breakthrough. As with past tech breakthroughs, it has led to a wave of innovation, experimentation, and development. The creativity around tokens, smart contracts, and decentralized applications has been fascinating to witness. Now a few years later, the fruits of those labors are starting to be realized.

DeFi: Decentralized Finance

So as a reminder, tokens are cryptocurrencies. Cryptocurrencies can carry value. And value is a lot like money. Because tokens are natively integrated with Ethereum, it’s been natural for developers to build applications related to financial services — things like lending, borrowing, saving, investing, payments, and insurance. In the last few years, there has been a groundswell of developer momentum building in this area of financial protocols. This segment of the industry is known as DeFi (Decentralized Finance).
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In Q2 of 2020, 97% of all Ethereum activity was DeFi-related. Total DeFi transaction volume has reached $11.5B. The current value locked inside DeFi protocols is approaching $2 Billion (double from a month ago). DeFi’s meteoric growth cannot be ignored.
Most of that growth can be attributed to exciting protocols like Compound, Maker, Synthetix, Balancer, Aave, dYdX, and Uniswap. These DeFi protocols and the financial services they offer are quickly becoming some of the most popular use-cases for blockchain technology today.
https://preview.redd.it/wn3phnkqfu951.png?width=800&format=png&auto=webp&s=02f56caa6b94aa59eadd6e368ef9346ba10c7611
This impressive growth in DeFi certainly hasn’t come without growing pains. Unlike with Bitcoin, there are near-infinite applications one can develop on Ethereum. Sometimes bugs (or typos) can slip through code reviews, testing, and audits — resulting in loss of funds.
Our next post will go much deeper on DeFi.

Wrap Up

I know that for the hardcore crypto people, what we covered today is nothing new. But for those who are still getting up to speed, welcome! I hope this was helpful and that it fuels your interest to learn more.
Until you understand the basics of this technology, you won’t be able to fully appreciate the impact that it has on our new digital bank, Genesis Block. You won’t be able to understand the implications, how it relates, or how it helps.
After today’s post, some of you probably have a lot more questions. What are specific examples or use-cases of DeFi? Why does it need to be on a blockchain? What benefits does it bring to Genesis Block and our users?
In upcoming posts, we answer these questions. Today’s post was just Level 1. It set the foundation for where we’re headed next: even deeper down the crypto rabbit hole.
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Bitcoin (BTC)A Peer-to-Peer Electronic Cash System.

Bitcoin (BTC)A Peer-to-Peer Electronic Cash System.
  • Bitcoin (BTC) is a peer-to-peer cryptocurrency that aims to function as a means of exchange that is independent of any central authority. BTC can be transferred electronically in a secure, verifiable, and immutable way.
  • Launched in 2009, BTC is the first virtual currency to solve the double-spending issue by timestamping transactions before broadcasting them to all of the nodes in the Bitcoin network. The Bitcoin Protocol offered a solution to the Byzantine Generals’ Problem with a blockchain network structure, a notion first created by Stuart Haber and W. Scott Stornetta in 1991.
  • Bitcoin’s whitepaper was published pseudonymously in 2008 by an individual, or a group, with the pseudonym “Satoshi Nakamoto”, whose underlying identity has still not been verified.
  • The Bitcoin protocol uses an SHA-256d-based Proof-of-Work (PoW) algorithm to reach network consensus. Its network has a target block time of 10 minutes and a maximum supply of 21 million tokens, with a decaying token emission rate. To prevent fluctuation of the block time, the network’s block difficulty is re-adjusted through an algorithm based on the past 2016 block times.
  • With a block size limit capped at 1 megabyte, the Bitcoin Protocol has supported both the Lightning Network, a second-layer infrastructure for payment channels, and Segregated Witness, a soft-fork to increase the number of transactions on a block, as solutions to network scalability.

https://preview.redd.it/s2gmpmeze3151.png?width=256&format=png&auto=webp&s=9759910dd3c4a15b83f55b827d1899fb2fdd3de1

1. What is Bitcoin (BTC)?

  • Bitcoin is a peer-to-peer cryptocurrency that aims to function as a means of exchange and is independent of any central authority. Bitcoins are transferred electronically in a secure, verifiable, and immutable way.
  • Network validators, whom are often referred to as miners, participate in the SHA-256d-based Proof-of-Work consensus mechanism to determine the next global state of the blockchain.
  • The Bitcoin protocol has a target block time of 10 minutes, and a maximum supply of 21 million tokens. The only way new bitcoins can be produced is when a block producer generates a new valid block.
  • The protocol has a token emission rate that halves every 210,000 blocks, or approximately every 4 years.
  • Unlike public blockchain infrastructures supporting the development of decentralized applications (Ethereum), the Bitcoin protocol is primarily used only for payments, and has only very limited support for smart contract-like functionalities (Bitcoin “Script” is mostly used to create certain conditions before bitcoins are used to be spent).

2. Bitcoin’s core features

For a more beginner’s introduction to Bitcoin, please visit Binance Academy’s guide to Bitcoin.

Unspent Transaction Output (UTXO) model

A UTXO transaction works like cash payment between two parties: Alice gives money to Bob and receives change (i.e., unspent amount). In comparison, blockchains like Ethereum rely on the account model.
https://preview.redd.it/t1j6anf8f3151.png?width=1601&format=png&auto=webp&s=33bd141d8f2136a6f32739c8cdc7aae2e04cbc47

Nakamoto consensus

In the Bitcoin network, anyone can join the network and become a bookkeeping service provider i.e., a validator. All validators are allowed in the race to become the block producer for the next block, yet only the first to complete a computationally heavy task will win. This feature is called Proof of Work (PoW).
The probability of any single validator to finish the task first is equal to the percentage of the total network computation power, or hash power, the validator has. For instance, a validator with 5% of the total network computation power will have a 5% chance of completing the task first, and therefore becoming the next block producer.
Since anyone can join the race, competition is prone to increase. In the early days, Bitcoin mining was mostly done by personal computer CPUs.
As of today, Bitcoin validators, or miners, have opted for dedicated and more powerful devices such as machines based on Application-Specific Integrated Circuit (“ASIC”).
Proof of Work secures the network as block producers must have spent resources external to the network (i.e., money to pay electricity), and can provide proof to other participants that they did so.
With various miners competing for block rewards, it becomes difficult for one single malicious party to gain network majority (defined as more than 51% of the network’s hash power in the Nakamoto consensus mechanism). The ability to rearrange transactions via 51% attacks indicates another feature of the Nakamoto consensus: the finality of transactions is only probabilistic.
Once a block is produced, it is then propagated by the block producer to all other validators to check on the validity of all transactions in that block. The block producer will receive rewards in the network’s native currency (i.e., bitcoin) as all validators approve the block and update their ledgers.

The blockchain

Block production

The Bitcoin protocol utilizes the Merkle tree data structure in order to organize hashes of numerous individual transactions into each block. This concept is named after Ralph Merkle, who patented it in 1979.
With the use of a Merkle tree, though each block might contain thousands of transactions, it will have the ability to combine all of their hashes and condense them into one, allowing efficient and secure verification of this group of transactions. This single hash called is a Merkle root, which is stored in the Block Header of a block. The Block Header also stores other meta information of a block, such as a hash of the previous Block Header, which enables blocks to be associated in a chain-like structure (hence the name “blockchain”).
An illustration of block production in the Bitcoin Protocol is demonstrated below.

https://preview.redd.it/m6texxicf3151.png?width=1591&format=png&auto=webp&s=f4253304912ed8370948b9c524e08fef28f1c78d

Block time and mining difficulty

Block time is the period required to create the next block in a network. As mentioned above, the node who solves the computationally intensive task will be allowed to produce the next block. Therefore, block time is directly correlated to the amount of time it takes for a node to find a solution to the task. The Bitcoin protocol sets a target block time of 10 minutes, and attempts to achieve this by introducing a variable named mining difficulty.
Mining difficulty refers to how difficult it is for the node to solve the computationally intensive task. If the network sets a high difficulty for the task, while miners have low computational power, which is often referred to as “hashrate”, it would statistically take longer for the nodes to get an answer for the task. If the difficulty is low, but miners have rather strong computational power, statistically, some nodes will be able to solve the task quickly.
Therefore, the 10 minute target block time is achieved by constantly and automatically adjusting the mining difficulty according to how much computational power there is amongst the nodes. The average block time of the network is evaluated after a certain number of blocks, and if it is greater than the expected block time, the difficulty level will decrease; if it is less than the expected block time, the difficulty level will increase.

What are orphan blocks?

In a PoW blockchain network, if the block time is too low, it would increase the likelihood of nodes producingorphan blocks, for which they would receive no reward. Orphan blocks are produced by nodes who solved the task but did not broadcast their results to the whole network the quickest due to network latency.
It takes time for a message to travel through a network, and it is entirely possible for 2 nodes to complete the task and start to broadcast their results to the network at roughly the same time, while one’s messages are received by all other nodes earlier as the node has low latency.
Imagine there is a network latency of 1 minute and a target block time of 2 minutes. A node could solve the task in around 1 minute but his message would take 1 minute to reach the rest of the nodes that are still working on the solution. While his message travels through the network, all the work done by all other nodes during that 1 minute, even if these nodes also complete the task, would go to waste. In this case, 50% of the computational power contributed to the network is wasted.
The percentage of wasted computational power would proportionally decrease if the mining difficulty were higher, as it would statistically take longer for miners to complete the task. In other words, if the mining difficulty, and therefore targeted block time is low, miners with powerful and often centralized mining facilities would get a higher chance of becoming the block producer, while the participation of weaker miners would become in vain. This introduces possible centralization and weakens the overall security of the network.
However, given a limited amount of transactions that can be stored in a block, making the block time too longwould decrease the number of transactions the network can process per second, negatively affecting network scalability.

3. Bitcoin’s additional features

Segregated Witness (SegWit)

Segregated Witness, often abbreviated as SegWit, is a protocol upgrade proposal that went live in August 2017.
SegWit separates witness signatures from transaction-related data. Witness signatures in legacy Bitcoin blocks often take more than 50% of the block size. By removing witness signatures from the transaction block, this protocol upgrade effectively increases the number of transactions that can be stored in a single block, enabling the network to handle more transactions per second. As a result, SegWit increases the scalability of Nakamoto consensus-based blockchain networks like Bitcoin and Litecoin.
SegWit also makes transactions cheaper. Since transaction fees are derived from how much data is being processed by the block producer, the more transactions that can be stored in a 1MB block, the cheaper individual transactions become.
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The legacy Bitcoin block has a block size limit of 1 megabyte, and any change on the block size would require a network hard-fork. On August 1st 2017, the first hard-fork occurred, leading to the creation of Bitcoin Cash (“BCH”), which introduced an 8 megabyte block size limit.
Conversely, Segregated Witness was a soft-fork: it never changed the transaction block size limit of the network. Instead, it added an extended block with an upper limit of 3 megabytes, which contains solely witness signatures, to the 1 megabyte block that contains only transaction data. This new block type can be processed even by nodes that have not completed the SegWit protocol upgrade.
Furthermore, the separation of witness signatures from transaction data solves the malleability issue with the original Bitcoin protocol. Without Segregated Witness, these signatures could be altered before the block is validated by miners. Indeed, alterations can be done in such a way that if the system does a mathematical check, the signature would still be valid. However, since the values in the signature are changed, the two signatures would create vastly different hash values.
For instance, if a witness signature states “6,” it has a mathematical value of 6, and would create a hash value of 12345. However, if the witness signature were changed to “06”, it would maintain a mathematical value of 6 while creating a (faulty) hash value of 67890.
Since the mathematical values are the same, the altered signature remains a valid signature. This would create a bookkeeping issue, as transactions in Nakamoto consensus-based blockchain networks are documented with these hash values, or transaction IDs. Effectively, one can alter a transaction ID to a new one, and the new ID can still be valid.
This can create many issues, as illustrated in the below example:
  1. Alice sends Bob 1 BTC, and Bob sends Merchant Carol this 1 BTC for some goods.
  2. Bob sends Carols this 1 BTC, while the transaction from Alice to Bob is not yet validated. Carol sees this incoming transaction of 1 BTC to him, and immediately ships goods to B.
  3. At the moment, the transaction from Alice to Bob is still not confirmed by the network, and Bob can change the witness signature, therefore changing this transaction ID from 12345 to 67890.
  4. Now Carol will not receive his 1 BTC, as the network looks for transaction 12345 to ensure that Bob’s wallet balance is valid.
  5. As this particular transaction ID changed from 12345 to 67890, the transaction from Bob to Carol will fail, and Bob will get his goods while still holding his BTC.
With the Segregated Witness upgrade, such instances can not happen again. This is because the witness signatures are moved outside of the transaction block into an extended block, and altering the witness signature won’t affect the transaction ID.
Since the transaction malleability issue is fixed, Segregated Witness also enables the proper functioning of second-layer scalability solutions on the Bitcoin protocol, such as the Lightning Network.

Lightning Network

Lightning Network is a second-layer micropayment solution for scalability.
Specifically, Lightning Network aims to enable near-instant and low-cost payments between merchants and customers that wish to use bitcoins.
Lightning Network was conceptualized in a whitepaper by Joseph Poon and Thaddeus Dryja in 2015. Since then, it has been implemented by multiple companies. The most prominent of them include Blockstream, Lightning Labs, and ACINQ.
A list of curated resources relevant to Lightning Network can be found here.
In the Lightning Network, if a customer wishes to transact with a merchant, both of them need to open a payment channel, which operates off the Bitcoin blockchain (i.e., off-chain vs. on-chain). None of the transaction details from this payment channel are recorded on the blockchain, and only when the channel is closed will the end result of both party’s wallet balances be updated to the blockchain. The blockchain only serves as a settlement layer for Lightning transactions.
Since all transactions done via the payment channel are conducted independently of the Nakamoto consensus, both parties involved in transactions do not need to wait for network confirmation on transactions. Instead, transacting parties would pay transaction fees to Bitcoin miners only when they decide to close the channel.
https://preview.redd.it/cy56icarf3151.png?width=1601&format=png&auto=webp&s=b239a63c6a87ec6cc1b18ce2cbd0355f8831c3a8
One limitation to the Lightning Network is that it requires a person to be online to receive transactions attributing towards him. Another limitation in user experience could be that one needs to lock up some funds every time he wishes to open a payment channel, and is only able to use that fund within the channel.
However, this does not mean he needs to create new channels every time he wishes to transact with a different person on the Lightning Network. If Alice wants to send money to Carol, but they do not have a payment channel open, they can ask Bob, who has payment channels open to both Alice and Carol, to help make that transaction. Alice will be able to send funds to Bob, and Bob to Carol. Hence, the number of “payment hubs” (i.e., Bob in the previous example) correlates with both the convenience and the usability of the Lightning Network for real-world applications.

Schnorr Signature upgrade proposal

Elliptic Curve Digital Signature Algorithm (“ECDSA”) signatures are used to sign transactions on the Bitcoin blockchain.
https://preview.redd.it/hjeqe4l7g3151.png?width=1601&format=png&auto=webp&s=8014fb08fe62ac4d91645499bc0c7e1c04c5d7c4
However, many developers now advocate for replacing ECDSA with Schnorr Signature. Once Schnorr Signatures are implemented, multiple parties can collaborate in producing a signature that is valid for the sum of their public keys.
This would primarily be beneficial for network scalability. When multiple addresses were to conduct transactions to a single address, each transaction would require their own signature. With Schnorr Signature, all these signatures would be combined into one. As a result, the network would be able to store more transactions in a single block.
https://preview.redd.it/axg3wayag3151.png?width=1601&format=png&auto=webp&s=93d958fa6b0e623caa82ca71fe457b4daa88c71e
The reduced size in signatures implies a reduced cost on transaction fees. The group of senders can split the transaction fees for that one group signature, instead of paying for one personal signature individually.
Schnorr Signature also improves network privacy and token fungibility. A third-party observer will not be able to detect if a user is sending a multi-signature transaction, since the signature will be in the same format as a single-signature transaction.

4. Economics and supply distribution

The Bitcoin protocol utilizes the Nakamoto consensus, and nodes validate blocks via Proof-of-Work mining. The bitcoin token was not pre-mined, and has a maximum supply of 21 million. The initial reward for a block was 50 BTC per block. Block mining rewards halve every 210,000 blocks. Since the average time for block production on the blockchain is 10 minutes, it implies that the block reward halving events will approximately take place every 4 years.
As of May 12th 2020, the block mining rewards are 6.25 BTC per block. Transaction fees also represent a minor revenue stream for miners.
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A Beginners Guide to Bitcoin, Blockchain & Cryptocurrency

As cryptocurrency, and blockchain technology become more abundant throughout our society, it’s important to understand the inner workings of this technology, especially if you plan to use cryptocurrency as an investment vehicle. If you’re new to the crypto-sphere, learning about Bitcoin makes it much easier to understand other cryptocurrencies as many other altcoins' technologies are borrowed directly from Bitcoin.
Bitcoin is one of those things that you look into only to discover you have more questions than answers, and right as you’re starting to wrap your head around the technology; you discover the fact that Bitcoin has six other variants (forks), the amount of politics at hand, or that there are over a thousand different cryptocurrencies just as complex if not even more complex than Bitcoin.
We are currently in the infancy of blockchain technology and the effects of this technology will be as profound as the internet. This isn’t something that’s just going to fade away into history as you may have been led to believe. I believe this is something that will become an integral part of our society, eventually embedded within our technology. If you’re a crypto-newbie, be glad that you're relatively early to the industry. I hope this post will put you on the fast-track to understanding Bitcoin, blockchain, and how a large percentage of cryptocurrencies work.

Community Terminology

Altcoin: Short for alternative coin. There are over 1,000 different cryptocurrencies. You’re probably most familiar with Bitcoin. Anything that isn’t Bitcoin is generally referred to as an altcoin.
HODL: Misspelling of hold. Dank meme accidentally started by this dude. Hodlers are much more interested in long term gains rather than playing the risky game of trying to time the market.
TO THE MOON: When a cryptocurrency’s price rapidly increases. A major price spike of over 1,000% can look like it’s blasting off to the moon. Just be sure you’re wearing your seatbelt when it comes crashing down.
FUD: Fear. Uncertainty. Doubt.
FOMO: Fear of missing out.
Bull Run: Financial term used to describe a rising market.
Bear Run: Financial term used to describe a falling market.

What Is Bitcoin?

Bitcoin (BTC) is a decentralized digital currency that uses cryptography to secure and ensure validity of transactions within the network. Hence the term crypto-currency. Decentralization is a key aspect of Bitcoin. There is no CEO of Bitcoin or central authoritative government in control of the currency. The currency is ran and operated by the people, for the people. One of the main development teams behind Bitcoin is blockstream.
Bitcoin is a product of blockchain technology. Blockchain is what allows for the security and decentralization of Bitcoin. To understand Bitcoin and other cryptocurrencies, you must understand to some degree, blockchain. This can get extremely technical the further down the rabbit hole you go, and because this is technically a beginners guide, I’m going to try and simplify to the best of my ability and provide resources for further technical reading.

A Brief History

Bitcoin was created by Satoshi Nakamoto. The identity of Nakamoto is unknown. The idea of Bitcoin was first introduced in 2008 when Nakamoto released the Bitcoin white paper - Bitcoin: A Peer-to-Peer Electronic Cash System. Later, in January 2009, Nakamoto announced the Bitcoin software and the Bitcoin network officially began.
I should also mention that the smallest unit of a Bitcoin is called a Satoshi. 1 BTC = 100,000,000 Satoshis. When purchasing Bitcoin, you don’t actually need to purchase an entire coin. Bitcoin is divisible, so you can purchase any amount greater than 1 Satoshi (0.00000001 BTC).

What Is Blockchain?

Blockchain is a distributed ledger, a distributed collection of accounts. What is being accounted for depends on the use-case of the blockchain itself. In the case of Bitcoin, what is being accounted for is financial transactions.
The first block in a blockchain is referred to as the genesis block. A block is an aggregate of data. Blocks are also discovered through a process known as mining (more on this later). Each block is cryptographically signed by the previous block in the chain and visualizing this would look something akin to a chain of blocks, hence the term, blockchain.
For more information regarding blockchain I’ve provided more resouces below:

What is Bitcoin Mining

Bitcoin mining is one solution to the double spend problem. Bitcoin mining is how transactions are placed into blocks and added onto the blockchain. This is done to ensure proof of work, where computational power is staked in order to solve what is essentially a puzzle. If you solve the puzzle correctly, you are rewarded Bitcoin in the form of transaction fees, and the predetermined block reward. The Bitcoin given during a block reward is also the only way new Bitcoin can be introduced into the economy. With a halving event occurring roughly every 4 years, it is estimated that the last Bitcoin block will be mined in the year 2,140. (See What is Block Reward below for more info).
Mining is one of those aspects of Bitcoin that can get extremely technical and more complicated the further down the rabbit hole you go. An entire website could be created (and many have) dedicated solely to information regarding Bitcoin mining. The small paragraph above is meant to briefly expose you to the function of mining and the role it plays within the ecosystem. It doesn’t even scratch the surface regarding the topic.

How do you Purchase Bitcoin?

The most popular way to purchase Bitcoin through is through an online exchange where you trade fiat (your national currency) for Bitcoin.
Popular exchanges include:
  • Coinbase
  • Kraken
  • Cex
  • Gemini
There’s tons of different exchanges. Just make sure you find one that supports your national currency.

Volatility

Bitcoin and cryptocurrencies are EXTREMELY volatile. Swings of 30% or more within a few days is not unheard of. Understand that there is always inherent risks with any investment. Cryptocurrencies especially. Only invest what you’re willing to lose.

Transaction & Network Fees

Transacting on the Bitcoin network is not free. Every purchase or transfer of Bitcoin will cost X amount of BTC depending on how congested the network is. These fees are given to miners as apart of the block reward.
Late 2017 when Bitcoin got up to $20,000USD, the average network fee was ~$50. Currently, at the time of writing this, the average network fee is $1.46. This data is available in real-time on BitInfoCharts.

Security

In this new era of money, there is no central bank or government you can go to in need of assistance. This means the responsibility of your money falls 100% into your hands. That being said, the security regarding your cryptocurrency should be impeccable. The anonymity provided by cryptocurrencies alone makes you a valuable target to hackers and scammers. Below I’ve detailed out best practices regarding securing your cryptocurrency.

Two-Factor Authentication (2FA)

Two-factor authentication is a second way of authenticating your identity upon signing in to an account. Most cryptocurrency related software/websites will offer or require some form of 2FA. Upon creation of any crypto-related account find the Security section and enable 2FA.

SMS Authentication

The most basic form of 2FA which you are probably most familiar with. This form of authentication sends a text message to your smartphone with a special code that will allow access to your account upon entry. Note that this is not the safest form of 2FA as you may still be vulnerable to what is known as a SIM swap attack. SIM swapping is a social engineering method in which an attacker will call up your phone carrier, impersonating you, in attempt to re-activate your SIM card on his/her device. Once the attacker has access to your SIM card he/she now has access to your text messages which can then be used to access your online accounts. You can prevent this by using an authenticator such as Google Authenticator.

Authenticator

The use of an authenticator is the safest form of 2FA. An authenticator is installed on a seperate device and enabling it requires you input an ever changing six digit code in order to access your account. I recommend using Google Authenticator.
If a website has the option to enable an authenticator, it will give you a QR code and secret key. Use Google Authenticator to scan the QR code. The secret key consists of a random string of numbers and letters. Write this down on a seperate sheet of paper and do not store it on a digital device.
Once Google Authenticator has been enabled, every time you sign into your account, you will have to input a six-digit code that looks similar to this. If you happen to lose or damage the device you have Google Authenticator installed on, you will be locked out of your account UNLESS you have access to the secret key (which you should have written down).

Hardware Wallets

A wallet is what you store Bitcoin and cryptocurrency on. I’ll provide resources on the different type of wallets later but I want to emphasize the use of a hardware wallet (aka cold storage).
Hardware wallets are the safest way of storing cryptocurrency because it allows for your crypto to be kept offline in a physical device. After purchasing crypto via an exchange, I recommend transferring it to cold storage. The most popular hardware wallets include the Ledger Nano S, and Trezor.
Hardware wallets come with a special key so that if it gets lost or damaged, you can recover your crypto. I recommend keeping your recovery key as well as any other sensitive information in a safety deposit box.
I know this all may seem a bit manic, but it is important you take the necessary security precautions in order to ensure the safety & longevity of your cryptocurrency.

Technical Aspects of Bitcoin

TL;DR
  • Address: What you send Bitcoin to.
  • Wallet: Where you store your Bitcoin
  • Max Supply: 21 million
  • Block Time: ~10 minutes
  • Block Size: 1-2 MB
  • Block Reward: BTC reward received from mining.

What is a Bitcoin Address?

A Bitcoin address is what you send Bitcoin to. If you want to receive Bitcoin you’d give someone your Bitcoin address. Think of a Bitcoin address as an email address for money.

What is a Bitcoin Wallet?

As the title implies, a Bitcoin wallet is anything that can store Bitcoin. There are many different types of wallets including paper wallets, software wallets and hardware wallets. It is generally advised NOT to keep cryptocurrency on an exchange, as exchanges are prone to hacks (see Mt. Gox hack).
My preferred method of storing cryptocurrency is using a hardware wallet such as the Ledger Nano S or Trezor. These allow you to keep your crypto offline in physical form and as a result, much more safe from hacks. Paper wallets also allow for this but have less functionality in my opinion.
After I make crypto purchases, I transfer it to my Ledger Nano S and keep that in a safe at home. Hardware wallets also come with a special key so that if it gets lost or damaged, you can recover your crypto. I recommend keeping your recovery key in a safety deposit box.

What is Bitcoins Max Supply?

The max supply of Bitcoin is 21 million. The only way new Bitcoins can be introduced into the economy are through block rewards which are given after successfully mining a block (more on this later).

What is Bitcoins Block Time?

The average time in which blocks are created is called block time. For Bitcoin, the block time is ~10 minutes, meaning, 10 minutes is the minimum amount of time it will take for a Bitcoin transaction to be processed. Note that transactions on the Bitcoin network can take much longer depending on how congested the network is. Having to wait a few hours or even a few days in some instances for a transaction to clear is not unheard of.
Other cryptocurrencies will have different block times. For example, Ethereum has a block time of ~15 seconds.
For more information on how block time works, Prabath Siriwardena has a good block post on this subject which can be found here.

What is Bitcoins Block Size?

There is a limit to how large blocks can be. In the early days of Bitcoin, the block size was 36MB, but in 2010 this was reduced to 1 MB in order to prevent distributed denial of service attacks (DDoS), spam, and other malicious use on the blockchain. Nowadays, blocks are routinely in excess of 1MB, with the largest to date being somewhere around 2.1 MB.
There is much debate amongst the community on whether or not to increase Bitcoin’s block size limit to account for ever-increasing network demand. A larger block size would allow for more transactions to be processed. The con argument to this is that decentralization would be at risk as mining would become more centralized. As a result of this debate, on August 1, 2017, Bitcoin underwent a hard-fork and Bitcoin Cash was created which has a block size limit of 8 MB. Note that these are two completely different blockchains and sending Bitcoin to a Bitcoin Cash wallet (or vice versa) will result in a failed transaction.
Update: As of May 15th, 2018 Bitcoin Cash underwent another hard fork and the block size has increased to 32 MB.
On the topic of Bitcoin vs Bitcoin Cash and which cryptocurrency is better, I’ll let you do your own research and make that decision for yourself. It is good to know that this is a debated topic within the community and example of the politics that manifest within the space. Now if you see community members arguing about this topic, you’ll at least have a bit of background to the issue.

What is Block Reward?

Block reward is the BTC you receive after discovering a block. Blocks are discovered through a process called mining. The only way new BTC can be added to the economy is through block rewards and the block reward is halved every 210,000 blocks (approximately every 4 years). Halving events are done to limit the supply of Bitcoin. At the inception of Bitcoin, the block reward was 50BTC. At the time of writing this, the block reward is 12.5BTC. Halving events will continue to occur until the amount of new Bitcoin introduced into the economy becomes less than 1 Satoshi. This is expected to happen around the year 2,140. All 21 million Bitcoins will have been mined. Once all Bitcoins have been mined, the block reward will only consist of transaction fees.

Technical Aspects Continued

Understanding Nodes

Straight from the Bitcoin.it wiki
Any computer that connects to the Bitcoin network is called a node. Nodes that fully verify all of the rules of Bitcoin are called full nodes.
In other words, full nodes are what verify the Bitcoin blockchain and they play a crucial role in maintaining the decentralized network. Full nodes store the entirety of the blockchain and validate transactions. Anyone can participate in the Bitcoin network and run a full node. Bitcoin.org has information on how to set up a full node. Running a full node also gives you wallet capabilities and the ability to query the blockchain.
For more information on Bitcoin nodes, see Andreas Antonopoulos’s Q&A on the role of nodes.

What is a Fork?

A fork is a divergence in a blockchain. Since Bitcoin is a peer-to-peer network, there’s an overall set of rules (protocol) in which participants within the network must abide by. These rules are put in place to form network consensus. Forks occur when implementations must be made to the blockchain or if there is disagreement amongst the network on how consensus should be achieved.

Soft Fork vs Hard Fork

The difference between soft and hard forks lies in compatibility. Soft forks are backwards compatible, hard forks are not. Think of soft forks as software upgrades to the blockchain, whereas hard forks are a software upgrade that warrant a completely new blockchain.
During a soft fork, miners and nodes upgrade their software to support new consensus rules. Nodes that do not upgrade will still accept the new blockchain.
Examples of Bitcoin soft forks include:
A hard fork can be thought of as the creation of a new blockchain that X percentage of the community decides to migrate too. During a hard fork, miners and nodes upgrade their software to support new consensus rules, Nodes that do not upgrade are invalid and cannot accept the new blockchain.
Examples of Bitcoin hard forks include:
  • Bitcoin Cash
  • Bitcoin Gold
Note that these are completely different blockchains and independent from the Bitcoin blockchain. If you try to send Bitcoin to one of these blockchains, the transaction will fail.

A Case For Bitcoin in a World of Centralization

Our current financial system is centralized, which means the ledger(s) that operate within this centralized system are subjugated to control, manipulation, fraud, and many other negative aspects that come with this system. There are also pros that come with a centralized system, such as the ability to swiftly make decisions. However, at some point, the cons outweigh the pros, and change is needed. What makes Bitcoin so special as opposed to our current financial system is that Bitcoin allows for the decentralized transfer of money. Not one person owns the Bitcoin network, everybody does. Not one person controls Bitcoin, everybody does. A decentralized system in theory removes much of the baggage that comes with a centralized system. Not to say the Bitcoin network doesn’t have its problems (wink wink it does), and there’s much debate amongst the community as to how to go about solving these issues. But even tiny steps are significant steps in the world of blockchain, and I believe Bitcoin will ultimately help to democratize our financial system, whether or not you believe it is here to stay for good.

Final Conclusions

Well that was a lot of words… Anyways I hope this guide was beneficial, especially to you crypto newbies out there. You may have come into this realm not expecting there to be an abundance of information to learn about. I know I didn’t. Bitcoin is only the tip of the iceberg, but now that you have a fundamental understanding of Bitcoin, learning about other cryptocurrencies such as Litecoin, and Ethereum will come more naturally.
Feel free to ask questions below! I’m sure either the community or myself would be happy to answer your questions.
Thanks for reading!

Related Links

Guides

Exchanges

submitted by MrCryptoDude to Bitcoin [link] [comments]

I wrote a 30,000 ft. "executive summary" intro document for cryptos. Not for you, for your non-technical parents or friends.

This document was originally written for my dad, an intelligent guy who was utterly baffled about the cryptocurrency world. The aim was to be extremely concise, giving a broad overview of the industry and some popular coins while staying non-technical. For many of you there will be nothing new here, but recognize that you are in the 0.001% of the population heavily into crypto technology.
I've reproduced it for Reddit below, or you can find the original post here on my website. Download the PDF there or hit the direct link: .PDF version.
Donations happily accepted:
ETH: 0x4e03Bf5CCE3eec4Ddae4d3d6aAD46ca4f198AeD6 BTC: 1GqWMZRRygRJJWYYTWHkAVoRcgyQHjgBMZ XMR: 42Y1S1KBoPk381kc7hA68zaiC78BxMoCADjLrFcTdWiE7ejhZc49s1t9i7P2EmTnHsLDiKoSUiogCbLVHXRJxjrCT4WG8ic XRB: xrb_1bpzh745s9kzk8ymfnks3jtdi65ayumdstokzd4yw4ohu3fopxmiocjcntcu 

Background

This document is purely informational. At the time of writing there are over 1000 cryptocurrencies (“cryptos”) in a highly volatile, high risk market. Many of the smaller “altcoins” require significant technical knowledge to store and transact safely. I advise you to carefully scrutinize each crypto’s flavor of blockchain, potential utility, team of developers, and guiding philosophy, before making any investment [1] decisions. With that out of the way, what follows are brief, extremely high-level summaries of some cryptos which have my interest, listed in current market cap order. But first, some info:
Each crypto is a different implementation of a blockchain network. Originally developed as decentralized digital cash, these technologies have evolved into much broader platforms, powering the future of decentralized applications across every industry in the global economy. Without getting into the weeds, [2] most cryptos work on similar principles:
Distributed Ledgers Each node on a blockchain network has a copy of every transaction, which enables a network of trust that eliminates fraud. [3]
Decentralized “Miners” comprise the infrastructure of a blockchain network. [4] They are monetarily incentivized to add computing power to the network, simultaneously securing and processing each transaction. [5]
Peer-to-peer Cryptos act like digital cash-- they require no third party to transact and are relatively untraceable. Unlike cash, you can back them up.
Global Transactions are processed cheaply and instantly, anywhere on Earth. Using cryptos, an African peasant and a San Francisco engineer have the same access to capital, markets, and network services.
Secure Blockchains are predicated on the same cryptographic technology that secures your sensitive data and government secrets. They have passed seven years of real-world penetration testing with no failures. [6]

Bitcoin (BTC)

The first cryptocurrency. As with first movers in any technology, there are associated pros and cons. Bitcoin has by far the strongest brand recognition and deepest market penetration, and it is the only crypto which can be used directly as a currency at over 100,000 physical and web stores around the world. In Venezuela and Zimbabwe, where geopolitical events have created hyperinflation in the centralized fiat currency, citizens have moved to Bitcoin as a de facto transaction standard. [7]
However, Bitcoin unveiled a number of issues that have been solved by subsequent cryptos. It is experiencing significant scaling issues, resulting in high fees and long confirmation times. The argument over potential solutions created a rift in the Bitcoin developer community, who “forked” the network into two separate blockchains amidst drama and politicking in October 2017. Potential solutions to these issues abound, with some already in place, and others nearing deployment.
Bitcoin currently has the highest market cap, and since it is easy to buy with fiat currency, the price of many smaller cryptos (“altcoins”) are loosely pegged to its price. This will change in the coming year(s).

Ethereum (ETH)

Where Bitcoin is a currency, Ethereum is a platform, designed as a foundational protocol on which to develop decentralized applications (“Dapps”). Anyone can write code and deploy their program on the global network for extremely low fees. Just like Twitter wouldn’t exist without the open platform of the internet, the next world-changing Dapp can’t exist without Ethereum.
Current Dapps include a global market for idle computing power and storage, peer-to-peer real estate transactions (no trusted third party for escrow), identity networks for governments and corporations (think digital Social Security card), and monetization strategies for the internet which replace advertising. Think back 10 years to the advent of smartphones, and then to our culture today-- Ethereum could have a similar network effect on humanity.
Ethereum is currently the #2 market cap crypto below Bitcoin, and many believe it will surpass it in 2018. It has a large, active group of developers working to solve scaling issues, [8] maintain security, and create entirely new programming conventions. If successful, platforms like Ethereum may well be the foundation of the decentralized internet of the future.

Ripple (XRP)

Ripple is significantly more centralized than most crypto networks, designed as a backbone for the global banking and financial technology (“fintech”) industries. It is a network for exchanging between fiat currencies and other asset classes instantly and cheaply, especially when transacting cross-border and between separate institutions. It uses large banks and remittance companies as “anchors” to allow trading between any asset on the network, and big names like Bank of America, American Express, RBC, and UBS are partners. The utility of this network is global and massive in scale.
It is extremely important to note that not all cryptos have the same number of tokens. Ripple has 100 Billion tokens compared to Bitcoin’s 21 Million. Do not directly compare price between cryptos. XRP will likely never reach $1k, [9] but the price will rise commensurate with its utility as a financial tool.
In some sense, Ripple is anathema to the original philosophical vision of this technology space. And while I agree with the cyberpunk notion of decentralized currencies, separation of money and state, this is the natural progression of the crypto world. The internet was an incredible decentralized wild west of Usenet groups and listservs before Eternal September and the dot-com boom, but its maturation affected every part of global society.

Cardano (ADA)

Cardano’s main claim to fame: it is the only crypto developed using academic methodologies by a global collective of engineers and researchers, built on a foundation of industry-leading, peer-reviewed cryptographic research. The network was designed from first-principles to allow scalability, system upgrades, and to balance the privacy of its users with the security needs of regulators.
One part of this ecosystem is the Cardano Foundation, a Swiss non-profit founded to work proactively with governments and regulatory bodies to institute legal frameworks around the crypto industry. Detractors of Cardano claim that it doesn’t do anything innovative, but supporters see the academic backing and focus on regulation development as uniquely valuable.

Stellar Lumens (XLM)

Stellar Lumens and Ripple were founded by the same person. They initially shared the same code, but today the two are distinct in their technical back-end as well as their guiding philosophy and development goals. Ripple is closed-source, for-profit, deflationary, and intended for use by large financial institutions. Stellar is open-source, non-profit, inflationary, and intended to promote international wealth distribution. As such, they are not direct competitors.
IBM is a major partner to Stellar. Their network is already processing live transactions in 12 currency corridors across the South Pacific, with plans to process 60% of all cross-border payments in the South Pacific’s retail foreign exchange corridor by Q2 2018.
Beyond its utility as a financial tool, the Stellar network may become a competitor to Ethereum as a platform for application development and Initial Coin Offerings (“ICOs”). The theoretical maximum throughput for the network is higher, and it takes less computational power to run. The Stellar development team is highly active, has written extensive documentation for third-party developers, and has an impressive list of advisors, including Patrick Collison (Stripe), Sam Altman (Y Combinator), and other giants in the software development community.

Iota (IOT)

Iota was developed as the infrastructure backbone for the Internet of Things (IoT), sometimes called the machine economy. As the world of inanimate objects is networked together, their need to communicate grows exponentially. Fridges, thermostats, self-driving cars, printers, planes, and industrial sensors all need a secure protocol with which to transact information.
Iota uses a “Tangle” instead of a traditional blockchain, and this is the main innovation driving the crypto’s value. Each device that sends a transaction confirms two other transactions in the Tanlge. This removes the need for miners, and enables unique features like zero fees and infinite scalability. The supply of tokens is fixed forever at 2.8*1015, a staggeringly large number (almost three thousand trillion), and the price you see reported is technically “MIOT”, or the price for a million tokens.

Monero (XMR)

The most successful privacy-focused cryptocurrency. In Bitcoin and most other cryptos, anyone can examine the public ledger and trace specific coins through the network. If your identity can be attached to a public address on that network, an accurate picture of your transaction history can be built-- who, what, and when. Monero builds anonymity into the system using strong cryptographic principles, which makes it functionally impossible to trace coins, [10] attach names to wallets, or extract metadata from transactions. The development team actively publishes in the cryptography research community.
Anonymous transactions are not new-- we call it cash. Only in the past two decades has anonymity grown scarce in the first-world with the rise of credit cards and ubiquitous digital records. Personal data is becoming the most valuable resource on Earth, and there are many legitimate reasons for law-abiding citizens to want digital privacy, but it is true that with anonymity comes bad actors-- Monero is the currency of choice for the majority of black market (“darknet”) transactions. Similarly, US Dollars are the main vehicle for the $320B annual drug trade. An investment here should be based on the underlying cryptographic research and technology behind this coin, as well as competitors like Zcash. [11]

RaiBlocks (XRB)

Zero fees and instantaneous transfer make RaiBlocks extremely attractive for exchange of value, in many senses outperforming Bitcoin at its original intended purpose. This crypto has seen an explosion in price and exposure over the past month, and it may become the network of choice for transferring value within and between crypto exchanges.
Just in the first week of 2018: the CEO of Ledger (makers of the most popular hardware wallet on the market) waived the $50k code review fee to get RaiBlocks on his product, and XRB got listed on Binance and Kucoin, two of the largest altcoin exchanges globally. This is one to watch for 2018. [12]

VeChain (VEN)

Developed as a single answer to the problem of supply-chain logistics, VeChain is knocking on the door of a fast-growing $8 trillion industry. Every shipping container and packaged product in the world requires constant tracking and verification. A smart economy for logistics built on the blockchain promises greater efficiency and lower cost through the entire process flow.
Don’t take my word for it-- VeChain has investment from PwC (5th largest US corporation), Groupe Renault, Kuehne & Nagel (world’s largest freight company), and DIG (China’s largest wine importer). The Chinese government has mandated VeChain to serve as blockchain technology partner to the city of Gui’an, a special economic zone and testbed for China’s smart city of the future. This crypto has some of the strongest commercial partnerships in the industry, and a large active development team.
  1. “Investment” is a misnomer. Cryptos are traded like securities, but grant you no equity (like trading currency).
  2. The weeds for Bitcoin: basic intro (1:36), non-technical explanation (5:24), Bitcoin 101 – Andreas Antonopoulos (23:51).
  3. It is impossible to double-spend or create a fake transaction, as each ledger is confirmed against every other ledger.
  4. Some utility token blockchains use DAG networks or similar non-linear networks which don’t require mining.
  5. In practice, these are giant warehouses full of specialized computers constantly processing transactions. Miners locate to the cheapest electricity source, and the bulk of mining currently occurs in China.
  6. Centralized second-layer exchange websites have been hacked, but the core technology is untouched.
  7. This effect has been termed "bitcoinization".
  8. The Ethereum roadmap shows moving from a Proof of Work (PoW) to Proof of Stake (PoS) consensus model.
  9. At $2.62 per XRP token, Ripple already commands a $100B market cap.
  10. After a January 2017 update.
  11. Monero uses ring signatures while Zcash uses ZK-SNARKs to create anonymity. Both have pros and cons.
  12. Note: all signs point to this crypto being renamed “Nano” in the coming weeks: nano.co.
submitted by jhchawk to CryptoCurrency [link] [comments]

Welcome to Komodo. A Beginner's Guide.

Overview: the basics of the Komodo ecosystem.
 
1. Privacy: a mighty privacy coin that protects your data and rewards you 5% annually.
 
What is a privacy coin? Privacy coins implement various protocols to create a layer of privacy between blockchain transactions. This can be utilized to prevent blockchain traceability or provide different levels of privacy for data stored on the blockchain.
 
What is Jumblr? A decentralized cryptocurrency shuffler that allows your transactions to become incognito and protects them from being traced through a time or knapsack attack. It adds a privacy layer to your transactions because after your coins are Jumbled, an analysis of the amounts that went in or times that they came out is futile. This function is unique to Komodo and does not require third parties.
 
2. Security: a secure and robust consensus mechanism called delayed Proof of Work (dPoW) that protects your funds and our ecosystem. This unique technology uses a notarization process to create a backup of the entire Komodo blockchain onto the Bitcoin blockchain thereby increasing security and resilience. This happens roughly every ten minutes. The backups are then saved (notarized) onto the Bitcoin blockchain because it has the highest hashrate available. So even if Komodo suffered a devastating attack (which is extremely unlikely), the Komodo blockchain would merely revert to the most recently notarized copy of the chain. If Bitcoin loses superiority in terms of hashrate the dPOW mechanism can be switched to another blockchain on demand. Hence, Komodo is the most flexible platform to build on and one of the most secure.
 
What is hashrate? A proof of work blockchain needs a lot of calculations. Hashrate is the way it is measured. The amount of data hashed in a given time by a machine. It is a unit used to define the amount of calculations made by a machine. When you add all the machines together you have the hashrate for that blockchain (here’s a great chart that illustrates it). It's like a river of transactions and the broader and wider it is, the harder it is to manipulate it.
 
Hashrate historical chart: https://bitinfocharts.com/comparison/hashrate-btc-eth-bch-ltc.html#1y.
 
3. Freedom from middlemen: a decentralized exchange (DEX) called BarterDEX, with a fully working order book, powered by our world-class atomic swap technology. This reduces risk and transaction fees. Komodo’s atomic swaps work between Bitcoin protocol and ERC20 tokens which means we can support over 95% of all the tokens and coins in existence. Our decentralized exchange offers ‘liquidity power-ups’ which mean that you can place more than one buy order with the same funds (i.e. pick your top 5 coins and if any of them drop below 50% of their value you’ll buy it and cancel the other orders at the same time) which means your funds have a greater value! On top of all that, Komodo’s DEX has fast transaction speeds and super low transaction fees (0.15%). You can find live BarterDEX and Komodo Stats here: https://dexstats.info/index.php.
 
What are atomic swaps? Atomic swaps are a method of trading cryptocurrencies peer-to-peer, directly from one blockchain to another, without the need to trust a third-party. Here is a good article to read that will take you about 11 minutes ‘Atomic Swaps & Etomic Swaps, Explained in Plain English’ written by John Westbrook on Medium.
 
Why do YOU want an exchange to be decentralized? A centralized exchange is a third party and requires you to trust them with your funds. If they’re hacked you’re at risk of losing your funds. Centralized exchanges also require you to trade between pillars (i.e. BTC or USDT) which can involve higher transaction fees and a greater number of trades than necessary to swap the token you have for the one you want (i.e. DOGE sell to BTC to buy KMD is two trades when all you really want is DOGE to KMD).
 
4. Independence: decentralized ICO crowdfunding and scalability solutions for blockchain startups.
You can think of a blockchain as a motorway and if you build a project on the same blockchain as other projects you will be impacted by how well the other drives behave, or by the motorway introducing tolls, or you could suffer from congestion (i.e. if you’re familiar with how crypto kitties caused ETH transaction fees to greatly increase and transaction speeds to slow down then you’ll understand multiple projects on one blockchain cause a scalability and independence problem ).
Komodo offers parallel chains which mean a project or decentralized ICO is given its own chain which uses Komodo’s technology. This also solves the scalability issue because using the motorway analogy we can simply open more lanes for a project with a high amount of congestion. This is possible because of the dPOW notarisation. It allows projects to launch completely independent blockchains.
Every independent blockchain created on Komodo Platform is automatically integrated into Komodo’s BarterDEX (DEX) which means they have instant access to liquidity for their token and their community can buy and trade immediately. If you compare this to a centralized exchange where projects are often met with a list of onerous demands and fees to be listed and risk being delisted then you’ll understand how important this is for any project especially smaller teams and decentralized apps (dAPPS).
 
5. Universal Wallet: the Agama Wallet is a universal secure, multi-coin wallet to store funds on and claim the 5% reward for your $KMD tokens. There is also a paper wallet available if you would prefer a cold storage option for those who want to maximize their security.
 

Read the Whitepaper

Join the Community

 

FAQs for BarterDEX

 

FAQs for Wallets

Where to buy $KMD

Mining Komodo

Thank you for reading this far. If you have any suggestions for how we can improve this guide or any questions please leave your commments below.
submitted by benohanlon to komodoplatform [link] [comments]

Decred Journal – August 2018

Note: you can read this on GitHub (link), Medium (link) or old Reddit (link) to see all the links.

Development

dcrd: Version 1.3.0 RC1 (Release Candidate 1) is out! The main features of this release are significant performance improvements, including some that benefit SPV clients. Full release notes and downloads are on GitHub.
The default minimum transaction fee rate was reduced from 0.001 to 0.0001 DCkB. Do not try to send such small fee transactions just yet, until the majority of the network upgrades.
Release process was changed to use release branches and bump version on the master branch at the beginning of a release cycle. Discussed in this chat.
The codebase is ready for the new Go 1.11 version. Migration to vgo module system is complete and the 1.4.0 release will be built using modules. The list of versioned modules and a hierarchy diagram are available here.
The testnet was reset and bumped to version 3.
Comments are welcome for the proposal to implement smart fee estimation, which is important for Lightning Network.
@matheusd recorded a code review video for new Decred developers that explains how tickets are selected for voting.
dcrwallet: Version 1.3.0 RC1 features new SPV sync mode, new ticket buyer, new APIs for Decrediton and a host of bug fixes. On the dev side, dcrwallet also migrated to the new module system.
Decrediton: Version 1.3.0 RC1 adds the new SPV sync mode that syncs roughly 5x faster. The feature is off by default while it receives more testing from experienced users. Other notable changes include a design polish and experimental Politeia integration.
Politeia: Proposal editing is being developed and has a short demo. This will allow proposal owners to edit their proposal in response to community feedback before voting begins. The challenges associated with this feature relate to updating censorship tokens and maintaining a clear history of which version comments were made on. @fernandoabolafio produced this architecture diagram which may be of interest to developers.
@degeri joined to perform security testing of Politeia and found several issues.
dcrdata: mainnet explorer upgraded to v2.1 with several new features. For users: credit/debit tx filter on address page, showing miner fees on coinbase transaction page, estimate yearly ticket rewards on main page, cool new hamburger menu and keyboard navigation. For developers: new chain parameters page, experimental Insight API support, endpoints for coin supply and block rewards, testnet3 support. Lots of minor API changes and frontend tweaks, many bug fixes and robustness improvements.
The upcoming v3.0 entered beta and is deployed on beta.dcrdata.org. Check out the new charts page. Feedback and bug reports are appreciated. Finally, the development version v3.1.0-pre is on alpha.dcrdata.org.
Android: updated to be compatible with the latest SPV code and is syncing, several performance issues are worked on. Details were posted in chat. Alpha testing has started, to participate please join #dev and ask for the APK.
iOS: backend is mostly complete, as well as the front end. Support for devices with smaller screens was improved. What works now: creating and recovering wallets, listing of transactions, receiving DCR, displaying and scanning QR codes, browsing account information, SPV connection to peers, downloading headers. Some bugs need fixing before making testable builds.
Ticket splitting: v0.6.0 beta released with improved fee calculation and multiple bug fixes.
docs: introduced new Governance section that grouped some old articles as well as the new Politeia page.
@Richard-Red created a concept repository sandbox with policy documents, to illustrate the kind of policies that could be approved and amended by Politeia proposals.
decred.org: 8 contributors added and 4 removed, including 2 advisors (discussion here).
decredmarketcap.com is a brand new website that shows the most accurate DCR market data. Clean design, mobile friendly, no javascript required.
Dev activity stats for August: 239 active PRs, 219 commits, 25k added and 11k deleted lines spread across 8 repositories. Contributions came from 2-10 developers per repository. (chart)

Network

Hashrate: went from 54 to 76 PH/s, the low was 50 and the new all-time high is 100 PH/s. BeePool share rose to ~50% while F2Pool shrank to 30%, followed by coinmine.pl at 5% and Luxor at 3%.
Staking: 30-day average ticket price is 95.6 DCR (+3.0) as of Sep 3. During the month, ticket price fluctuated between a low of 92.2 and high of 100.5 DCR. Locked DCR represented between 3.8 and 3.9 million or 46.3-46.9% of the supply.
Nodes: there are 217 public listening and 281 normal nodes per dcred.eu. Version distribution: 2% at v1.4.0(pre) (dev builds), 5% on v1.3.0 (RC1), 62% on v1.2.0 (-5%), 22% on v1.1.2 (-2%), 6% on v1.1.0 (-1%). Almost 69% of nodes are v.1.2.0 and higher and support client filters. Data snapshot of Aug 31.

ASICs

Obelisk posted 3 email updates in August. DCR1 units are reportedly shipping with 1 TH/s hashrate and will be upgraded with firmware to 1.5 TH/s. Batch 1 customers will receive compensation for missed shipment dates, but only after Batch 5 ships. Batch 2-5 customers will be receiving the updated slim design.
Innosilicon announced the new D9+ DecredMaster: 2.8 TH/s at 1,230 W priced $1,499. Specified shipping date was Aug 10-15.
FFMiner DS19 claims 3.1 TH/s for Blake256R14 at 680 W and simultaneously 1.55 TH/s for Blake2B at 410 W, the price is $1,299. Shipping Aug 20-25.
Another newly noticed miner offer is this unit that does 46 TH/s at 2,150 W at the price of $4,720. It is shipping Nov 2018 and the stats look very close to Pangolin Whatsminer DCR (which has now a page on asicminervalue).

Integrations

www.d1pool.com joined the list of stakepools for a total of 16.
Australian CoinTree added DCR trading. The platform supports fiat, there are some limitations during the upgrade to a new system but also no fees in the "Early access mode". On a related note, CoinTree is working on a feature to pay household bills with cryptocurrencies it supports.
Three new OTC desks were added to exchanges page at decred.org.
Two mobile wallets integrated Decred:
Reminder: do your best to understand the security and privacy model before using any wallet software. Points to consider: who controls the seed, does the wallet talk to the nodes directly or via middlemen, is it open source or not?

Adoption

Merchants:

Marketing

Targeted advertising report for August was posted by @timhebel. Facebook appeal is pending, some Google and Twitter campaigns were paused and some updated. Read more here.
Contribution to the @decredproject Twitter account has evolved over the past few months. A #twitter_ops channel is being used on Matrix to collaboratively draft and execute project account tweets (including retweets). Anyone with an interest in contributing to the Twitter account can ask for an invitation to the channel and can start contributing content and ideas there for evaluation by the Twitter group. As a result, no minority or unilateral veto over tweets is possible. (from GitHub)

Events

Attended:
For those willing to help with the events:
BAB: Hey all, we are gearing up for conference season. I have a list of places we hope to attend but need to know who besides @joshuam and @Haon are willing to do public speaking, willing to work booths, or help out at them? You will need to be well versed on not just what is Decred, but the history of Decred etc... DM me if you are interested. (#event_planning)
The Decred project is looking for ambassadors. If you are looking for a fun cryptocurrency to get involved in send me a DM or come talk to me on Decred slack. (@marco_peereboom, longer version here)

Media

Decred Assembly episode 21 is available. @jy-p and lead dcrwallet developer @jrick discussed SPV from Satoshi's whitepaper, how it can be improved upon and what's coming in Decred.
Decred Assembly episodes 1-21 are available in audio only format here.
New instructional articles on stakey.club: Decrediton setup, Deleting the wallet, Installing Go, Installing dcrd, dcrd as a Linux service. Available in both English and Portuguese.
Decred scored #32 in the August issue of Chinese CCID ratings. The evaluation model was explained in this interview.
Satis Group rated Decred highly in their cryptoasset valuation research report (PDF). This was featured by several large media outlets, but some did not link to or omitted Decred entirely, citing low market cap.
Featured articles:
Articles:
Videos:

Community Discussions

Community stats:
Comm systems news:
After another debate about chat systems more people began testing and using Matrix, leading to some gardening on that platform:
Highlights:
Reddit: substantive discussion about Decred cons; ecosystem fund; a thread about voter engagement, Politeia UX and trolling; idea of a social media system for Decred by @michae2xl; how profitable is the Obelisk DCR1.
Chats: cross-chain trading via LN; plans for contractor management system, lower-level decision making and contractor privacy vs transparency for stakeholders; measuring dev activity; what if the network stalls, multiple implementations of Decred for more resilience, long term vision behind those extensive tests and accurate comments in the codebase; ideas for process for policy documents, hosting them in Pi and approving with ticket voting; about SPV wallet disk size, how compact filters work; odds of a wallet fetching a wrong block in SPV; new module system in Go; security of allowing Android app backups; why PoW algo change proposal must be specified in great detail; thoughts about NIPoPoWs and SPV; prerequisites for shipping SPV by default (continued); Decred vs Dash treasury and marketing expenses, spending other people's money; why Decred should not invade a country, DAO and nation states, entangling with nation state is poor resource allocation; how winning tickets are determined and attack vectors; Politeia proposal moderation, contractor clearance, the scale of proposals and decision delegation, initial Politeia vote to approve Politeia itself; chat systems, Matrix/Slack/Discord/RocketChat/Keybase (continued); overview of Korean exchanges; no breaking changes in vgo; why project fund burn rate must keep low; asymptotic behavior of Decred and other ccs, tail emission; count of full nodes and incentives to run them; Politeia proposal translations and multilingual environment.
An unusual event was the chat about double negatives and other oddities in languages in #trading.

Markets

DCR started the month at USD 56 / BTC 0.0073 and had a two week decline. On Aug 14 the whole market took a huge drop and briefly went below USD 200 billion. Bitcoin went below USD 6,000 and top 100 cryptos lost 5-30%. The lowest point coincided with Bitcoin dominance peak at 54.5%. On that day Decred dived -17% and reached the bottom of USD 32 / BTC 0.00537. Since then it went sideways in the USD 35-45 / BTC 0.0054-0.0064 range. Around Aug 24, Huobi showed DCR trading volume above USD 5M and this coincided with a minor recovery.
@ImacallyouJawdy posted some creative analysis based on ticket data.

Relevant External

StopAndDecrypt published an extensive article "ASIC Resistance is Nothing but a Blockchain Buzzword" that is much in line with Decred's stance on ASICs.
The ongoing debates about the possible Sia fork yet again demonstrate the importance of a robust dispute resolution mechanism. Also, we are lucky to have the treasury.
Mark B Lundeberg, who found a vulnerability in atomicswap earlier, published a concept of more private peer-to-peer atomic swaps. (missed in July issue)
Medium took a cautious stance on cryptocurrencies and triggered at least one project to migrate to Ghost (that same project previously migrated away from Slack).
Regulation: Vietnam bans mining equipment imports, China halts crypto events and tightens control of crypto chat groups.
Reddit was hacked by intercepting 2FA codes sent via SMS. The announcement explains the impact. Yet another data breach suggests to think twice before sharing any data with any company and shift to more secure authentication systems.
Intel and x86 dumpsterfire keeps burning brighter. Seek more secure hardware and operating systems for your coins.
Finally, unrelated to Decred but good for a laugh: yetanotherico.com.

About This Issue

This is the 5th issue of Decred Journal. It is mirrored on GitHub, Medium and Reddit. Past issues are available here.
Most information from third parties is relayed directly from source after a minimal sanity check. The authors of Decred Journal have no ability to verify all claims. Please beware of scams and do your own research.
Feedback is appreciated: please comment on Reddit, GitHub or #writers_room on Matrix or Slack.
Contributions are welcome too. Some areas are collecting content, pre-release review or translations to other languages. Check out @Richard-Red's guide how to contribute to Decred using GitHub without writing code.
Credits (Slack names, alphabetical order): bee, Haon, jazzah, Richard-Red and thedecreddigest.
submitted by jet_user to decred [link] [comments]

Subreddit Stats: Bitcoin posts from 2018-10-09 to 2018-10-16 19:41 PDT

Period: 7.10 days
Submissions Comments
Total 765 10226
Rate (per day) 107.80 1494.28
Unique Redditors 596 3440
Combined Score 31658 33963

Top Submitters' Top Submissions

  1. 4526 points, 1 submission: Alexsayzz
    1. Anti-crypto propaganda... promoted by American Express (4526 points, 513 comments)
  2. 2391 points, 2 submissions: MoonMan_666
    1. Someone just paid $0.10 to move $194M (29,999 BTC). Think about how powerful that is for a second. (2369 points, 380 comments)
    2. Dev sends Bitcoin without using the web or the power grid (22 points, 4 comments)
  3. 2077 points, 1 submission: _Logicrypto
    1. When your boss thanks you for staying late at work but you were just watching the Bitcoin price and lost track of time (2077 points, 69 comments)
  4. 1496 points, 1 submission: bitbug42
    1. ⚡Lightning Network at the Senate - Counterargument to Roubini's speech that Bitcoin can never scale to serve the planet (1496 points, 186 comments)
  5. 1417 points, 1 submission: opencoins
    1. Why sell and pay capital gains, why not wait for mass adoption? That's my motto. (1417 points, 244 comments)
  6. 1174 points, 1 submission: awertheim
    1. Took a while but finally part of the picture club (had to wait on the web browser update!) (1174 points, 127 comments)
  7. 853 points, 1 submission: Hodl_it
    1. Feeling good? (853 points, 215 comments)
  8. 833 points, 1 submission: cointastical
    1. Bitcoin ATM operator gets the $62,500 that police confiscated back (833 points, 110 comments)
  9. 802 points, 2 submissions: JandyJammer
    1. Congratulations US senators for understanding crypto better than this guy (748 points, 125 comments)
    2. How is Bitmex the biggest exchange... total joke. I hope their competitors crush them. (54 points, 49 comments)
  10. 704 points, 1 submission: lesbiansareoverrated
    1. ...in case you missed the laura shill burn today (704 points, 100 comments)
  11. 512 points, 5 submissions: castorfromtheva
    1. Mycelium wallet will FINALLY get segwit! "This month" as stated by Mycelium developers on 9 October 2018. Glad to hear! I am excited. (312 points, 136 comments)
    2. Just saw it on their website: Ledger Nano S 20% off, directly from manufacturer! For six days, starting today. Just in case you consider getting a hardware wallet. (146 points, 84 comments)
    3. Newsflash: Bitfinex Unveils ‘Distributed Banking Solution,’ Resumes Fiat Deposits (44 points, 8 comments)
    4. Binance Uganda Launch 80% Ready As Users Can Now Sign Up: Deposits & Trading Coming Soon (8 points, 1 comment)
    5. Article: "Cryptos at a turning point", trustnodes.com (2 points, 0 comments)
  12. 510 points, 4 submissions: eddieweng
    1. Someone moved 12,220 BTC ($82M) in block 545,877 (393 points, 180 comments)
    2. Someone moved 22,200 BTC ($139M) in block 545,243 (90 points, 38 comments)
    3. CoinMarketBull – CoinMarketCap, but with a different metric (26 points, 4 comments)
    4. holdernews - trending stories on bitcointalk (1 point, 0 comments)
  13. 387 points, 1 submission: StoneHammers
    1. We are three months away from Bitcoins 10 year anniversary. (387 points, 39 comments)
  14. 366 points, 3 submissions: TrackCoinMarket-com
    1. Citizens of Venezuela have turned to Bitcoin and gold farming in online games to survive the country’s economic collapse. (365 points, 60 comments)
    2. Zambian Central Bank Declares Bitcoin Is Not Legal Tender (1 point, 7 comments)
    3. Bitcoin is Maturing, Crypto Growth Surprisingly Positive Reveals Study (0 points, 3 comments)
  15. 358 points, 1 submission: musicfan39
    1. Bitcoin all-time price graph (Aug 2010 – Oct 2018) (358 points, 84 comments)
  16. 311 points, 5 submissions: TheGreatMuffin
    1. Bitfinex' statement on fiat deposits/withdrawals (tldr: fiat and crypto withdrawals working, fiat deposits temporarily paused) (103 points, 52 comments)
    2. Bitfinex suspends all fiat deposits, “expects the situation to normalize within a week” (78 points, 62 comments)
    3. Fidelity gives a nod to OG cypherpunks (mentioning Adam Back, Nick Szabo, David Chaum) and bitcoin's precursors in their newest blog post (78 points, 0 comments)
    4. full video of the US Senate hearing on cryptocurrency: with P. Van Valkenburgh and N. Roubini as witnesses (starts at minute 16) (31 points, 5 comments)
    5. Interview with one of the creators of the Samourai wallet (21 points, 1 comment)
  17. 305 points, 1 submission: 6maud
    1. Jamie Dimon: Bitcoin is a scam. Also Jamie Dimon: Let's file 20 blockchain patents so we don't miss out on this blockchain thing. facepalm (305 points, 93 comments)
  18. 274 points, 2 submissions: undertheradar48
    1. $6.9 trillion of assets just got access to the world of crypto! (169 points, 24 comments)
    2. 1.65 Million people are attending over 5,000 Bitcoin meetups around the world. Organic interest/curiosity is real! (105 points, 41 comments)
  19. 265 points, 1 submission: NoGooderr
    1. Shorters, are you okay? (265 points, 123 comments)
  20. 253 points, 5 submissions: _smudger_
    1. Bakkt CEO: We're About To See A Cryptocurrency Revolution (130 points, 29 comments)
    2. Our team, launch and advocacy – Bakkt Blog – Medium (104 points, 33 comments)
    3. Coinbase's Adam White is joining Bakkt as its COO - The Block (16 points, 1 comment)
    4. The Bright Side of the 2018 Bitcoin Bear Market – Wes Carlson – Medium (2 points, 0 comments)
    5. Analysis: ErisX & Bakkt Are All in on the Battle for Institutional Cash (1 point, 0 comments)
  21. 247 points, 1 submission: Fly115
    1. It would be impossible for every Fidelity brokerage customer to own even one Bitcoin. This is why Bitcoins are worth thousands of dollars, while a dollar is only worth one dollar (and only until next year when when it's worth 97 cents). - Erik Voorhees (247 points, 129 comments)
  22. 237 points, 1 submission: manfromnantucket1984
    1. Bear markets are for building! 🐻⚡ While the price is doing what it does, we continue to build the #LightningNetwork at the #LightningHackdayNYC in New York on October 27th/28th 2018. Speakers like Christian Decker, Matt Corallo and Peter Todd will take you down the rabbit hole. (237 points, 15 comments)
  23. 232 points, 1 submission: TheMidnightMatinee
    1. Guys lets rally and show your support for an BTC ETF! Here's why! (232 points, 63 comments)
  24. 231 points, 2 submissions: installeris
    1. Fidelity just made it easier for hedge funds and other pros to invest in cryptocurrencies (169 points, 36 comments)
    2. Nouriel Roubini has always been talking sh*t about Bitcoin. And he's always wrong. (62 points, 29 comments)
  25. 226 points, 1 submission: lewtr
    1. An easter egg in the Bitcoin genesis block code (226 points, 40 comments)
  26. 218 points, 1 submission: Unusual_Mountain
    1. Bitcoin as a safe haven from monetary policy can help keep governments and banks honest. It doesn't have to replace them. (218 points, 85 comments)
  27. 214 points, 1 submission: Mobilenewsflash
    1. Roubini (214 points, 50 comments)
  28. 212 points, 1 submission: CardCollector1
    1. Getting Started with BTCPay Server - Free and Open Source Bitcoin and Lightning Network payment processor (212 points, 75 comments)
  29. 201 points, 1 submission: yonstonston
    1. Sorry guys, i bought BTC yesterday... (201 points, 72 comments)
  30. 161 points, 2 submissions: linzex
    1. A Bitcoin Lesson From A Yogi Master (93 points, 6 comments)
    2. ChangeNow Exchange Accused of $70,000 Theft (68 points, 8 comments)
  31. 159 points, 3 submissions: zappadoing
    1. greetings from holidays - I thought I won't have to read anything about bitcoin this time... (130 points, 12 comments)
    2. Telegram down! Lots of Bitcoin-Groups not accessible. We need something decentralized. (19 points, 26 comments)
    3. Colleges Are Baffled by Bitcoin Donations (10 points, 0 comments)
  32. 159 points, 1 submission: Crevative
    1. Zimbabwe spirals into economic chaos as fears of another round of hyperinflation begin to spark - another fiat currency fails! (159 points, 20 comments)
  33. 147 points, 1 submission: lexihayes99
    1. Just wanted to remind people of a simpler time :) (147 points, 196 comments)
  34. 146 points, 1 submission: Rare_Ad
    1. Bitcoin was a tool that was born of the economic crisis some 10 years ago, does that mean another big recession or banking collapse could catapult it forward? (146 points, 87 comments)
  35. 146 points, 1 submission: vmrey
    1. Buda, the largest crypto exchange by volume in Chile, is one of the first to incorporate Lightning network. (146 points, 14 comments)
  36. 145 points, 1 submission: wwwdata
    1. I own crypto but not Bitcoin. (145 points, 243 comments)
  37. 141 points, 9 submissions: expertbit
    1. This E-Bike Accepts Payments With Bitcoin's Lightning Network (51 points, 3 comments)
    2. Bitcoin [BTC] transfers will become a lot faster with Liquid Network, says Jimmy Song (37 points, 58 comments)
    3. Top Universities Are Now Investing in Cryptocurrency Funds (18 points, 0 comments)
    4. Indian Exchange Unocoin Could Launch Crypto ATMs (17 points, 0 comments)
    5. Bitcoin Price Stability -- A Bullish Or Bearish Sign? (15 points, 1 comment)
    6. Don’t Underestimate China’s Power In Bitcoin (2 points, 3 comments)
    7. Bitcoin Price Analysis: Bulls Defend Yearly Support Amidst Wall Street Slump (1 point, 0 comments)
    8. Bitcoin Network Comes To A Standstill In China (0 points, 2 comments)
    9. Bitcoin Price Jumps by $600 to Reach One-Month High Above $6.9k (0 points, 0 comments)
  38. 137 points, 1 submission: diditmakesound
    1. Everyone still buying right now (137 points, 30 comments)
  39. 135 points, 1 submission: gattacibus
    1. POLONIEX suspends Bitcoin withdrawals (135 points, 86 comments)
  40. 129 points, 3 submissions: nopara73
    1. Wasabi Wallet added OSX support. Please consider testing it. (55 points, 25 comments)
    2. Scoring Bitcoin Wallets (38 points, 25 comments)
    3. A Technical Overview of Wasabi Wallet, Future Ideas, Plans and Strategy (36 points, 1 comment)
  41. 123 points, 1 submission: Big_Bluefin
    1. Live from Fremont Street in Las Vegas (123 points, 20 comments)
  42. 121 points, 1 submission: agustinf
    1. Latin American Exchange Buda.com adds Lightning Network payments for all. (121 points, 17 comments)
  43. 118 points, 2 submissions: TheCrunk1
    1. Fidelity launches new company for trading, storing cryptocurrencies (98 points, 26 comments)
    2. Binance launches fiat-to-crypto exchange in Uganda (20 points, 7 comments)
  44. 112 points, 1 submission: Thinkmoreaboutit
    1. "Over the weekend I sent a bitcoin transaction to a relay 12.6km away with no cell network or internet connection. Here's a tweetstorm about how I used @gotenna and @SamouraiWallet to do it" [email protected] (112 points, 20 comments)
  45. 111 points, 1 submission: Jackieknows
    1. When it comes to your coins, keep it quiet. – Trezor Blog (111 points, 10 comments)
  46. 110 points, 1 submission: 100ravp
    1. Someone solved the 310.00 BTC challenge (110 points, 87 comments)
  47. 110 points, 1 submission: loulan
    1. There was an attempt (110 points, 78 comments)
  48. 106 points, 1 submission: king-only
    1. Breez, a Lightning Network mobile client, is now fully open sourced (106 points, 19 comments)
  49. 101 points, 2 submissions: HodlingToTheMoon
    1. Websites using Joomla (second most popular platform after Wordpress), can now be enabled with Bitcoin payments - In less than 5 min! (98 points, 5 comments)
    2. Got business on your mind? Here are 7 easy and genuine ideas to start a Bitcoin-centric e-commerce store! (3 points, 0 comments)
  50. 98 points, 1 submission: ubunt2
    1. Fidelity Starts Crypto Unit to Serve Wall Street Customers (98 points, 4 comments)
  51. 97 points, 1 submission: CosmicHemorroid
    1. Lightning Powered E-bike #Reckless (97 points, 22 comments)
  52. 96 points, 3 submissions: DesignerAccount
    1. Bitcoin is all grown up! (83 points, 6 comments)
    2. [Bitcoin OpSec - Keep your coins safe] Detailed breakdown of sophisticated scam (12 points, 6 comments)
    3. Infographic - How do UTXOs work? (1 point, 0 comments)
  53. 96 points, 1 submission: bowlingfries
    1. Bitcoin kiosk in Portland OR weed dispensary (96 points, 21 comments)
  54. 94 points, 1 submission: nassimmontreal
    1. #roubinilovescrypto (94 points, 37 comments)
  55. 92 points, 2 submissions: ella11price
    1. Selling goods and items for Bitcoin should be easy. I built a marketplace similar to eBay so people can sell anything for crypto. This video explains it. (91 points, 63 comments)
    2. The best ways to earn bitcoin and cryptocurrency. Includes how to spot a scam (1 point, 0 comments)
  56. 91 points, 1 submission: ytcoinartist
    1. The Golden Pineapple, a 3D combination puzzle for all ages and free to play. Be the first to solve the final level and win 1 BTC, courtesy of The Pineapple Fund. http://pineapplearcade.net/arcade-game/pineapple (91 points, 25 comments)
  57. 89 points, 1 submission: Rachsuchtig
    1. An BTC ATM at Austria/Salzburg Shopping Arena, totally surprised to see (89 points, 11 comments)
  58. 87 points, 2 submissions: Ishan1121
    1. Bitcoin proves once again its the best way to transfer money! $194 million transferred for 10 cents. (87 points, 18 comments)
    2. Discussion: So Bitcoin rises as fake news on Binance delisting Tether (USDT) goes viral...removing Tether completley will affect the market positively? THoughts? (0 points, 6 comments)
  59. 87 points, 1 submission: Blixx87
    1. I finally figured it out! We have been forming a Dorito Pattern and it’s on it’s way to the cheese dip. (87 points, 49 comments)
  60. 86 points, 8 submissions: EffigyBoy
    1. Venezuelans Play RuneScape To Make Small Profit In Bitcoin (31 points, 4 comments)
    2. CFTC Chair On Bitcoin Expansion: "We Are Seeing More Institutional Movement Into This Area" (26 points, 0 comments)
    3. The Indian Government is Considering to Launch Its Own Cryptocurrency to Avoid Citizens Using Bitcoin (13 points, 14 comments)
    4. The Congress Is Groping In The Dark To Handle Cryptocurrencies. Bitcoin has come into the mainstream. (6 points, 0 comments)
    5. After Stock Markets Plunge Cryptocurrency Whale Dumps over 22 100 BTC (5 points, 11 comments)
    6. Scientific Journal 'Chaos' Favors Bitcoin – As stable as Oil and Dollar Markets (2 points, 1 comment)
    7. The First Physical Cryptocurrency Store in The U.S. Launches on October 20 (2 points, 1 comment)
    8. Omniex and Gemini Struck A Partnership to Support Institutional Investors (1 point, 0 comments)
  61. 85 points, 2 submissions: jakesonwu
    1. Release - Eclair v0.2-beta7 - Compatible with Bitcoin Core 0.17.0 (75 points, 8 comments)
    2. Lord Keynes Would Be Proud (10 points, 1 comment)
  62. 84 points, 2 submissions: renepickhardt
    1. ECDSA is not that bad: two-party signing without Schnorr or BLS (by Stepan Snigirev) (53 points, 7 comments)
    2. Last week in Lightning Network: A weekly collection of lightning network (and related) news on Twitter (31 points, 6 comments)
  63. 83 points, 3 submissions: OldCarpet54
    1. [GIVEAWAY] Crypto Invest Summit – Wozniak, Gupta, Morehead (82 points, 1 comment)
    2. blockchain news: from SF Blockchain Week and XBlockchain (1 point, 0 comments)
    3. Buterin | SpankChain | Kambria: San Francisco Blockchain Week (0 points, 0 comments)
  64. 83 points, 1 submission: -elektro-pionir-
    1. AMA with Bitcoin engineer Jameson Lopp (83 points, 21 comments)
  65. 80 points, 3 submissions: ysangkok
    1. Bitcoin script discussion at Scaling Bitcoin: "Sporks are probabilistic soft-forks [...] where instead of [...] version bits if the blockhash has some [...] PoW below some threshold, it activates. [...] [E.g.] you have an expectation of 6 months to get your shit together. Doing it live." (28 points, 3 comments)
    2. Multi-Hop Locks for Secure, Privacy-Preserving and Interoperable Payment-Channel Networks (27 points, 8 comments)
    3. Scaling Bitcoin Kaizen - Scriptless scripts, adaptor signatures and their applications (25 points, 2 comments)
  66. 78 points, 3 submissions: mkuraja
    1. What's the difference between Lightning Network and Liquid Network? (57 points, 41 comments)
    2. Need some fresh, new FOMO in your life? Reenter, Trace Mayer. (15 points, 1 comment)
    3. This American tourist thought I'd see "Bitcoin Accepted Here" all over Tokyo, Japan but not one place found yet. (6 points, 17 comments)
  67. 77 points, 1 submission: Miladran
    1. Fidelity Says It Will Trade Bitcoin for Hedge Funds (77 points, 1 comment)
  68. 77 points, 1 submission: pandaman200
    1. Swiss Crypto Fund Obtains Country’s First Crypto Asset Management License (77 points, 4 comments)
  69. 75 points, 3 submissions: mickhick95
    1. I purchased a goTenna to broadcast my BTC transactions with TxTenna and Samourai Wallet. (44 points, 15 comments)
    2. I saw a Bitcoin ATM and I had to make a purchase. (28 points, 41 comments)
    3. 303-ish Days in the BTC Bear Market, This Sideways Motion Looks Like A Turn Around!!! (3 points, 16 comments)
  70. 75 points, 1 submission: hcarpach
    1. Venezuelan cryptocurrency miner: “we are police’s most wanted” (75 points, 21 comments)
  71. 73 points, 6 submissions: WorkCoin_Team
    1. “Bitcoin enables certain uses that are very unique. I think it offers possibilities that no other currency allows. For example the ability to spend a coin that only occurs when two separate parties agree to spend the coin; with a third party that couldn’t run away with the coin itself.” – Pieter Wui (66 points, 14 comments)
    2. Revolution of Bitcoin (5 points, 3 comments)
    3. A Funny Bitcoin Thought (2 points, 20 comments)
    4. Getting started with Bitcoin (0 points, 1 comment)
    5. Make your foundation strong (0 points, 0 comments)
    6. What are you not willing to compromise? (0 points, 6 comments)
  72. 73 points, 1 submission: ozdixon
    1. Bitcoin accepted at a absenth bar in Prague. (73 points, 11 comments)
  73. 72 points, 1 submission: Itasia
    1. What Are Atomic Swaps? Ultimate Guide (72 points, 16 comments)
  74. 71 points, 1 submission: MannyAndDrChurchShow
    1. I wonder if they would still honor this card.... (71 points, 9 comments)
  75. 68 points, 4 submissions: grittygatorr
    1. Liquid Network - the world’s first production Bitcoin sidechain has officially gone live (65 points, 100 comments)
    2. XDEX Advertises Commission-Free Bitcoin Trading in Brazil (2 points, 0 comments)
    3. Coinfloor to Cut on Staff and Reorganize Amid Volume Fluctuations in the Crypto Markets (1 point, 0 comments)
    4. Barclays Temporarily Suspends Work on Cryptocurrency Trading Project (0 points, 1 comment)
  76. 68 points, 1 submission: WouterGlorieux
    1. Introducing 'The Bitcoin Spellbook': an open-source REST API server for the back-end of (almost) any Bitcoin application. (Think of it as your own IfThisThenThat server but for Bitcoin) (68 points, 3 comments)
  77. 67 points, 1 submission: Vaultoro_official
    1. Leading up to the LightingNetwork Hackathon in NY, I thought I would post the talks we filmed at the Berlin lightningHackDay. Some amazing talks! (67 points, 1 comment)
  78. 65 points, 1 submission: Komodor123
    1. Do you speak more than one language? Then help spread Bitcoin around the world by translating Bitcoin.org! (65 points, 28 comments)
  79. 63 points, 1 submission: Sandiegosurf1
    1. Fidelity Launches Institutional Crypto Trading and Clearing. Let the institutional money flow! (63 points, 1 comment)
  80. 63 points, 1 submission: TearAnus-SoreAssRekt
    1. Buying PC Games With Bitcoin: Site Reviews (with some accepting Lightning!) (63 points, 7 comments)
  81. 62 points, 1 submission: CryptoCloaks
    1. We finally got our RaspiBlitz case to a level we love! Time for load testing to check thermals, final mods are almost done! (62 points, 10 comments)
  82. 61 points, 1 submission: sagiher
    1. #Liberte#CaribbeanBitcoin#ShoutOutToAllBitcoinDeveloperOutThere (61 points, 9 comments)

Top Commenters

  1. PragmaticParadox (465 points, 7 comments)
  2. ikarienator (462 points, 1 comment)
  3. Hanspanzer (434 points, 106 comments)
  4. Toyake (434 points, 71 comments)
  5. uglymelt (394 points, 3 comments)
  6. UsherTechs (377 points, 1 comment)
  7. isdudu (345 points, 4 comments)
  8. TyroneTheDriver (307 points, 1 comment)
  9. Rattlesnake_Mullet (296 points, 11 comments)
  10. andycam7 (282 points, 3 comments)
  11. dmdeemer (275 points, 1 comment)
  12. BTCkoning (266 points, 114 comments)
  13. CP70 (257 points, 7 comments)
  14. ascension8438 (239 points, 7 comments)
  15. Fly115 (226 points, 9 comments)
  16. haribo_2016 (220 points, 4 comments)
  17. dsmid (214 points, 1 comment)
  18. i_gotta_say (208 points, 87 comments)
  19. TheGreatMuffin (206 points, 56 comments)
  20. ebaley (198 points, 34 comments)
  21. bitsteiner (185 points, 86 comments)
  22. Redditridder (181 points, 5 comments)
  23. KupKhunKrap (173 points, 36 comments)
  24. 45sbvad (169 points, 3 comments)
  25. c3corvette (165 points, 2 comments)
  26. killerstorm (163 points, 8 comments)
  27. evilgrinz (158 points, 48 comments)
  28. chronic_nervosa (140 points, 1 comment)
  29. bigdaddysdick (136 points, 7 comments)
  30. castorfromtheva (129 points, 27 comments)
  31. Touchmyhandle (125 points, 12 comments)
  32. Euphoricsoul (122 points, 1 comment)
  33. WaterMac27 (122 points, 1 comment)
  34. DSXIII (118 points, 1 comment)
  35. RIMS_REAL_BIG (117 points, 24 comments)
  36. cryptogrip (112 points, 39 comments)
  37. WalterRyan (108 points, 10 comments)
  38. sudophant (107 points, 5 comments)
  39. NotSeeTroll (104 points, 37 comments)
  40. deadleg22 (104 points, 10 comments)
  41. shared_makes_it_real (103 points, 26 comments)
  42. alexiglesias007 (103 points, 7 comments)
  43. Buttoshi (102 points, 68 comments)
  44. flunderbossanova (102 points, 59 comments)
  45. lexihayes99 (101 points, 28 comments)
  46. mabezard (101 points, 2 comments)
  47. peniswithahoodie (98 points, 1 comment)
  48. beloboi (96 points, 65 comments)
  49. vovr (89 points, 3 comments)
  50. segells4soulsmogoblo (89 points, 1 comment)
  51. damchi (87 points, 21 comments)
  52. smadgerano (81 points, 14 comments)
  53. time_wasted504 (80 points, 34 comments)
  54. joeknowswhoiam (80 points, 16 comments)
  55. diydude2 (79 points, 26 comments)
  56. sQtWLgK (79 points, 17 comments)
  57. 989x4000 (78 points, 22 comments)
  58. sreaka (78 points, 16 comments)
  59. YoungScholar89 (78 points, 6 comments)
  60. Ellipso (76 points, 2 comments)
  61. HitsABlunt (76 points, 1 comment)
  62. almkglor (75 points, 39 comments)
  63. MrRGnome (75 points, 37 comments)
  64. Daddeus65 (75 points, 28 comments)
  65. whalecheetah (75 points, 25 comments)
  66. BCash_BeTrash (75 points, 23 comments)
  67. cipher-space (75 points, 19 comments)
  68. bnuttall (72 points, 2 comments)
  69. chrisrico (71 points, 26 comments)
  70. esdraelon (71 points, 8 comments)
  71. ale1ormont (71 points, 2 comments)
  72. igadjeed (70 points, 42 comments)
  73. Holographiks (70 points, 19 comments)
  74. frankieboy07 (70 points, 2 comments)
  75. snazzycoins (69 points, 12 comments)
  76. dmar198 (69 points, 11 comments)
  77. protoman86 (69 points, 7 comments)
  78. bitbug42 (68 points, 5 comments)
  79. CardCollector1 (66 points, 16 comments)
  80. hawks5999 (66 points, 7 comments)
  81. DefiantVerse (65 points, 12 comments)
  82. psionides (65 points, 8 comments)
  83. btc-forextrader (64 points, 37 comments)
  84. UniqueNewQuark (63 points, 5 comments)
  85. imaducksfan (63 points, 1 comment)
  86. bitusher (62 points, 23 comments)
  87. homad (62 points, 13 comments)
  88. torbitonsa (62 points, 7 comments)
  89. violencequalsbad (62 points, 7 comments)
  90. wwwdata (61 points, 20 comments)
  91. LadyRosedancer (61 points, 1 comment)
  92. Nunoyabiznes (60 points, 22 comments)
  93. pg3crypto (60 points, 13 comments)
  94. XxArmadaxX (60 points, 4 comments)
  95. awertheim (59 points, 27 comments)
  96. Ploxxx69 (59 points, 1 comment)
  97. TheGlassStone (59 points, 1 comment)
  98. moodytomatoes (58 points, 39 comments)
  99. Sneakybobo (58 points, 13 comments)
  100. UniqueCandy (58 points, 8 comments)

Top Submissions

  1. Anti-crypto propaganda... promoted by American Express by Alexsayzz (4526 points, 513 comments)
  2. Someone just paid $0.10 to move $194M (29,999 BTC). Think about how powerful that is for a second. by MoonMan_666 (2369 points, 380 comments)
  3. When your boss thanks you for staying late at work but you were just watching the Bitcoin price and lost track of time by _Logicrypto (2077 points, 69 comments)
  4. ⚡Lightning Network at the Senate - Counterargument to Roubini's speech that Bitcoin can never scale to serve the planet by bitbug42 (1496 points, 186 comments)
  5. Why sell and pay capital gains, why not wait for mass adoption? That's my motto. by opencoins (1417 points, 244 comments)
  6. Took a while but finally part of the picture club (had to wait on the web browser update!) by awertheim (1174 points, 127 comments)
  7. Feeling good? by Hodl_it (853 points, 215 comments)
  8. Bitcoin ATM operator gets the $62,500 that police confiscated back by cointastical (833 points, 110 comments)
  9. Congratulations US senators for understanding crypto better than this guy by JandyJammer (748 points, 125 comments)
  10. ...in case you missed the laura shill burn today by lesbiansareoverrated (704 points, 100 comments)

Top Comments

  1. 462 points: ikarienator's comment in Feeling good?
  2. 456 points: PragmaticParadox's comment in Anti-crypto propaganda... promoted by American Express
  3. 387 points: uglymelt's comment in ⚡Lightning Network at the Senate - Counterargument to Roubini's speech that Bitcoin can never scale to serve the planet
  4. 377 points: UsherTechs's comment in When your boss thanks you for staying late at work but you were just watching the Bitcoin price and lost track of time
  5. 342 points: isdudu's comment in Anti-crypto propaganda... promoted by American Express
  6. 307 points: TyroneTheDriver's comment in Anti-crypto propaganda... promoted by American Express
  7. 276 points: andycam7's comment in Why sell and pay capital gains, why not wait for mass adoption? That's my motto.
  8. 275 points: dmdeemer's comment in Someone just paid $0.10 to move $194M (29,999 BTC). Think about how powerful that is for a second.
  9. 268 points: Rattlesnake_Mullet's comment in Someone moved 12,220 BTC ($82M) in block 545,877
  10. 244 points: CP70's comment in Anti-crypto propaganda... promoted by American Express
Generated with BBoe's Subreddit Stats
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Bitcoin BIG Move? Craig Wright Is A Fraud Binance DELISTS Bitcoin SV

This video was the old version of PDAX I ENCOURAGE YOU TO WATCH MY LATEST VIDEO ABOUT PDAX: https://www.youtube.com/playlist?list=PLzKnWOuYT-c9L4vVmrQk80oh1F... Bitcoin Technical Analysis & Bitcoin News Today: Craig Wright is a fraud and Binance delists Bitcoin SV. I'll use technical analysis on the Bitcoin price to make a Bitcoin price prediction. Watch ... Btc bitcoin ETH ethereum XRP ripple bch bitcoin cash eos ltc litecoin ada cardano xlm stellar iota miota tron trx neo xmr monero dash nem xem ven vechain bnb binance etc ethereum classic qtum ont ... Bitcoin has been crushing everything along it's path on it's way back up to an all time high of $5,000. Will it succeed? And are altcoins doomed while bitcoin dominates? Resources: Bitcoin Gold ... = Toujours valable en [2020] Premier Tutoriel débutant: 1/4. Voici la première vidéo de la playlist tutoriel de ma chaîne. Cette dernière vise les plus début... Is this the Bitcoin Halving Pump? Bitcoin decouples from stocks! $10k or $5k Bitcoin First? 2nd Chance to the Bitcoin Bottom? Digital Dollar is mentioned in House Bill! Federal Reserve printing ... Binance para iniciantes - veja como usar essa exchange de Bitcoin! Tutorial 2019/2020 - Link: https://cryptotchaps.com/link/binance • Binance: https://crypto... #bitcoin #like #cryptocurrency #news #btc #ethereum #eth #cryptocurrency #litecoin #altcoin #altcoins #eos #forex #money #best #trading #bitcoinmining #invest #trader #cryptocurrencies #top # ... Binance Coin Technical Analysis 6:30 PIVX Chart 7:22 KMD Chart 10:00 BNB Analysis *** Please leave comments for questions you have - I respond after every video! *** --- JOIN THE MONEY TEAM --- #1 ... Subscribe to my channel for more videos showing how to create passive income with Cryptocurrency. Start buying Bitcoin now with a FREE account by clicking he...

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