Blockchain API · Apiary

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]

Study Tutorial Eklavya Online

Eklavya Online, EklavyaOnline, Self Study,Study Tutoriall, Technical Interview Questions, Interview Questions Preparation, FAQ, Interview Questions, Most Asked Interview Questions, Rapid Fire, Latest Interview Questions, Updated Interview Questions Answers, Advance Java, Android Interview Questions, Angular 7 Interview Questions, Angular 8 Interview Questions, Angular Interview Questions, AngularJS Interview Questions, API Testing Interview Questions, Artificial Intelligence Interview Questions, ASP.NET Interview Questions, AWS Interview Questions, Backbone.js Interview Questions, Bitcoin Interview Questions, Blockchain Interview Questions, Blog, C Interview Questions, CodeIgniter Interview Questions, Core Java, Data Analytics Interview Questions, Data Structure Interview Questions, DB2 Interview Questions, DBMS Interview Questions, DevOps Interview Questions, Digital Marketing Interview Questions, Django Interview Questions, Dot Net Interview Questions, Drupal Interview Questions, Ember.js Interview Questions, Flutter Interview Questions, Hadoop Interview Questions, HR Interview Questions, Interview Tips, Joomla Interview Questions, Laravel Interview Questions, Machine Learning Interview Questions, Magento Interview Questions, Microsoft Azure Interview Question, MongoDB Interview Questions, MySQL Interview Questions, Node.js Interview Questions, Oracle Interview Questions, Phalcon Interview Question, PHP Interview Questions, PL/SQL Interview Questions, Power BI Interview Questions, Project Management Interview Questions, Pure.CSS Interview Questions, Python Interview Questions, Quality Assurance Interview Questions, R Interview Questions, React Native Interview Questions, Selenium Interview Questions, SEO Interview Questions, Software Testing Interview Questions, SQL Interview Questions, Swift Interview Questions, Tableau Interview Questions, Vue.js Interview Questions, Web Development Interview Questions, Web Services Interview Questions, WordPress Interview Questions
submitted by arsh-123 to u/arsh-123 [link] [comments]

Technical Interview Questions

Eklavya Online, EklavyaOnline, Self Study, Study Tutorial, Technical Interview Questions, Interview Questions Preparation, FAQ, Interview Questions, Most Asked Interview Questions, Rapid Fire, Latest Interview Questions, Updated Interview Questions Answers, Advance Java, Android Interview Questions, Angular 7 Interview Questions, Angular 8 Interview Questions, Angular Interview Questions, AngularJS Interview Questions, API Testing Interview Questions, Artificial Intelligence Interview Questions, ASP.NET Interview Questions, AWS Interview Questions, Backbone.js Interview Questions, Bitcoin Interview Questions, Blockchain Interview Questions, Blog, C Interview Questions, CodeIgniter Interview Questions, Core Java, Data Analytics Interview Questions, Data Structure Interview Questions, DB2 Interview Questions, DBMS Interview Questions, DevOps Interview Questions, Digital Marketing Interview Questions, Django Interview Questions, Dot Net Interview Questions, Drupal Interview Questions, Ember.js Interview Questions, Flutter Interview Questions, Hadoop Interview Questions, HR Interview Questions, Interview Tips, Joomla Interview Questions, Laravel Interview Questions, Machine Learning Interview Questions, Magento Interview Questions, Microsoft Azure Interview Question, MongoDB Interview Questions, MySQL Interview Questions, Node.js Interview Questions, Oracle Interview Questions, Phalcon Interview Question, PHP Interview Questions, PL/SQL Interview Questions, Power BI Interview Questions, Project Management Interview Questions, Pure.CSS Interview Questions, Python Interview Questions, Quality Assurance Interview Questions, R Interview Questions, React Native Interview Questions, Selenium Interview Questions, SEO Interview Questions, Software Testing Interview Questions, SQL Interview Questions, Swift Interview Questions, Tableau Interview Questions, Vue.js Interview Questions, Web Development Interview Questions, Web Services Interview Questions, WordPress Interview Question
submitted by arsh-123 to u/arsh-123 [link] [comments]

Eklavya Online Interview Question

Eklavya Online,EklavyaOnline, Self Study, Study Tutorial, Technical Interview Questions, Interview Questions Preparation, FAQ, Interview Questions, Most Asked Interview Questions, Rapid Fire, Latest Interview Questions, Updated Interview Questions Answers, Advance Java, Android Interview Questions, Angular 7 Interview Questions, Angular 8 Interview Questions, Angular Interview Questions, AngularJS Interview Questions, API Testing Interview Questions, Artificial Intelligence Interview Questions, ASP.NET Interview Questions, AWS Interview Questions, Backbone.js Interview Questions, Bitcoin Interview Questions, Blockchain Interview Questions, Blog, C Interview Questions, CodeIgniter Interview Questions, Core Java, Data Analytics Interview Questions, Data Structure Interview Questions, DB2 Interview Questions, DBMS Interview Questions, DevOps Interview Questions, Digital Marketing Interview Questions, Django Interview Questions, Dot Net Interview Questions, Drupal Interview Questions, Ember.js Interview Questions, Flutter Interview Questions, Hadoop Interview Questions, HR Interview Questions, Interview Tips, Joomla Interview Questions, Laravel Interview Questions, Machine Learning Interview Questions, Magento Interview Questions, Microsoft Azure Interview Question, MongoDB Interview Questions, MySQL Interview Questions, Node.js Interview Questions, Oracle Interview Questions, Phalcon Interview Question, PHP Interview Questions, PL/SQL Interview Questions, Power BI Interview Questions, Project Management Interview Questions, Pure.CSS Interview Questions, Python Interview Questions, Quality Assurance Interview Questions, R Interview Questions, React Native Interview Questions, Selenium Interview Questions, SEO Interview Questions, Software Testing Interview Questions, SQL Interview Question
submitted by arsh-123 to u/arsh-123 [link] [comments]

Eklavya Online Interview Questions

Eklavya Online Interview Questions
Eklavya Online, EklavyaOnline, Self Study, Study Tutorial, Technical Interview Questions, Interview Questions Preparation, FAQ, Interview Questions, Most Asked Interview Questions, Rapid Fire, Latest Interview Questions, Updated Interview Questions Answers, Advance Java, Android Interview Questions, Angular 7 Interview Questions, Angular 8 Interview Questions, Angular Interview Questions, AngularJS Interview Questions, API Testing Interview Questions, Artificial Intelligence Interview Questions, ASP.NET Interview Questions, AWS Interview Questions, Backbone.js Interview Questions, Bitcoin Interview Questions, Blockchain Interview Questions, Blog, C Interview Questions, CodeIgniter Interview Questions, Core Java, Data Analytics Interview Questions, Data Structure Interview Questions, DB2 Interview Questions, DBMS Interview Questions, DevOps Interview Questions, Digital Marketing Interview Questions, Django Interview Questions, Dot Net Interview Questions, Drupal Interview Questions, Ember.js Interview Questions, Flutter Interview Questions, Hadoop Interview Questions, HR Interview Questions, Interview Tips, Joomla Interview Questions, Laravel Interview Questions, Machine Learning Interview Questions, Magento Interview Questions, Microsoft Azure Interview Question, MongoDB Interview Questions, MySQL Interview Questions, Node.js Interview Questions, Oracle Interview Questions, Phalcon Interview Question, PHP Interview Questions, PL/SQL Interview Questions, Power BI Interview Questions, Project Management Interview Questions, Pure.CSS Interview Questions, Python Interview Questions, Quality Assurance Interview Questions, R Interview Questions, React Native Interview Questions, Selenium Interview Questions, SEO Interview Questions, Software Testing Interview Questions, SQL Interview Questions, Swift Interview Questions, Tableau Interview Questions, Vue.js Interview Questions, Web Development Interview Questions, Web Services Interview Questions, WordPress Interview Questions
https://preview.redd.it/cspnbsvdseu51.jpg?width=770&format=pjpg&auto=webp&s=8d14d9142d79c5f26440ccc83c7f2fc46f99ba55
submitted by eklavyaonline to u/eklavyaonline [link] [comments]

Eklavya Online Category Interview Question

Eklavya Online Category Interview Question
Eklavya Online, EklavyaOnline, Self Study, Study Tutorial, Technical Interview Questions, Interview Questions Preparation, FAQ, Interview Questions, Most Asked Interview Questions, Rapid Fire, Latest Interview Questions, Updated Interview Questions Answers, Advance Java, Android Interview Questions, Angular 7 Interview Questions, Angular 8 Interview Questions, Angular Interview Questions, AngularJS Interview Questions, API Testing Interview Questions, Artificial Intelligence Interview Questions, ASP.NET Interview Questions, AWS Interview Questions, Backbone.js Interview Questions, Bitcoin Interview Questions, Blockchain Interview Questions, Blog, C Interview Questions, CodeIgniter Interview Questions, Core Java, Data Analytics Interview Questions, Data Structure Interview Questions, DB2 Interview Questions, DBMS Interview Questions, DevOps Interview Questions, Digital Marketing Interview Questions, Django Interview Questions, Dot Net Interview Questions, Drupal Interview Questions, Ember.js Interview Questions, Flutter Interview Questions, Hadoop Interview Questions, HR Interview Questions, Interview Tips, Joomla Interview Questions, Laravel Interview Questions, Machine Learning Interview Questions, Magento Interview Questions, Microsoft Azure Interview Question, MongoDB Interview Questions, MySQL Interview Questions, Node.js Interview Questions, Oracle Interview Questions, Phalcon Interview Question, PHP Interview Questions, PL/SQL Interview Questions, Power BI Interview Questions, Project Management Interview Questions, Pure.CSS Interview Questions, Python Interview Questions, Quality Assurance Interview Questions, R Interview Questions, React Native Interview Questions, Selenium Interview Questions, SEO Interview Questions, Software Testing Interview Questions, SQL Interview Questions, Swift Interview Questions, Tableau Interview Questions, Vue.js Interview Questions, Web Development Interview Questions, Web Services Interview Questions, WordPress Interview Questions
https://preview.redd.it/mvdgv1ex96v51.png?width=770&format=png&auto=webp&s=e9c920b7d901ee5646900b56b5fd04c128a42414
submitted by Eklavyaonline123 to u/Eklavyaonline123 [link] [comments]

Eklavya Online Interview Question

Eklavya Online Interview Question
Eklavya Online, EklavyaOnline, Self Study, Study Tutorial, Technical Interview Questions, Interview Questions Preparation, FAQ, Interview Questions, Most Asked Interview Questions, Rapid Fire, Latest Interview Questions, Updated Interview Questions Answers, Advance Java, Android Interview Questions, Angular 7 Interview Questions, Angular 8 Interview Questions, Angular Interview Questions, AngularJS Interview Questions, API Testing Interview Questions, Artificial Intelligence Interview Questions, ASP.NET Interview Questions, AWS Interview Questions, Backbone.js Interview Questions, Bitcoin Interview Questions, Blockchain Interview Questions, Blog, C Interview Questions, CodeIgniter Interview Questions, Core Java, Data Analytics Interview Questions, Data Structure Interview Questions, DB2 Interview Questions, DBMS Interview Questions, DevOps Interview Questions, Digital Marketing Interview Questions, Django Interview Questions, Dot Net Interview Questions, Drupal Interview Questions, Ember.js Interview Questions, Flutter Interview Questions, Hadoop Interview Questions, HR Interview Questions, Interview Tips, Joomla Interview Questions, Laravel Interview Questions, Machine Learning Interview Questions, Magento Interview Questions, Microsoft Azure Interview Question, MongoDB Interview Questions, MySQL Interview Questions, Node.js Interview Questions, Oracle Interview Questions, Phalcon Interview Question, PHP Interview Questions, PL/SQL Interview Questions, Power BI Interview Questions, Project Management Interview Questions, Pure.CSS Interview Questions, Python Interview Questions, Quality Assurance Interview Questions, R Interview Questions, React Native Interview Questions, Selenium Interview Questions, SEO Interview Questions, Software Testing Interview Questions, SQL Interview Questions, Swift Interview Questions, Tableau Interview Questions, Vue.js Interview Questions, Web Development Interview Questions, Web Services Interview Questions, WordPress Interview Questions
https://preview.redd.it/a7ui6cfv66v51.png?width=770&format=png&auto=webp&s=e3d3625df25ca0c7623415b1925cbf3570a601fb
submitted by Eklavyaonline123 to u/Eklavyaonline123 [link] [comments]

Eklavya Online Technical Interview Question

Eklavya Online Technical Interview Question
Eklavya Online, EklavyaOnline, Self Study, Study Tutorial, Technical Interview Questions, Interview Questions Preparation, FAQ, Interview Questions, Most Asked Interview Questions, Rapid Fire, Latest Interview Questions, Updated Interview Questions Answers, Advance Java, Android Interview Questions, Angular 7 Interview Questions, Angular 8 Interview Questions, Angular Interview Questions, AngularJS Interview Questions, API Testing Interview Questions, Artificial Intelligence Interview Questions, ASP.NET Interview Questions, AWS Interview Questions, Backbone.js Interview Questions, Bitcoin Interview Questions, Blockchain Interview Questions, Blog, C Interview Questions, CodeIgniter Interview Questions, Core Java, Data Analytics Interview Questions, Data Structure Interview Questions, DB2 Interview Questions, DBMS Interview Questions, DevOps Interview Questions, Digital Marketing Interview Questions, Django Interview Questions, Dot Net Interview Questions, Drupal Interview Questions, Ember.js Interview Questions, Flutter Interview Questions, Hadoop Interview Questions, HR Interview Questions, Interview Tips, Joomla Interview Questions, Laravel Interview Questions, Machine Learning Interview Questions, Magento Interview Questions, Microsoft Azure Interview Question, MongoDB Interview Questions, MySQL Interview Questions, Node.js Interview Questions, Oracle Interview Questions, Phalcon Interview Question, PHP Interview Questions, PL/SQL Interview Questions, Power BI Interview Questions, Project Management Interview Questions, Pure.CSS Interview Questions, Python Interview Questions, Quality Assurance Interview Questions, R Interview Questions, React Native Interview Questions, Selenium Interview Questions, SEO Interview Questions, Software Testing Interview Questions, SQL Interview Questions, Swift Interview Questions, Tableau Interview Questions, Vue.js Interview Questions, Web Development Interview Questions, Web Services Interview Questions, WordPress Interview Questions
https://preview.redd.it/lwd4qtsm86v51.png?width=770&format=png&auto=webp&s=6b3a553be30ab1fe7f7b51b5eb52b4d7554a543a
submitted by Eklavyaonline123 to u/Eklavyaonline123 [link] [comments]

Subreddit Stats: programming top posts from 2019-10-22 to 2020-10-21 06:41 PDT

Period: 364.67 days
Submissions Comments
Total 1000 180545
Rate (per day) 2.74 491.84
Unique Redditors 629 34951
Combined Score 1178903 2688497

Top Submitters' Top Submissions

  1. 47468 points, 49 submissions: iamkeyur
    1. One Guy Ruined Hacktoberfest 2020 (3039 points, 584 comments)
    2. AWS forked my project and launched it as its own service (2956 points, 810 comments)
    3. Privacy analysis of Tiktok’s app and website (2858 points, 234 comments)
    4. 98.css – design system for building faithful recreations of Windows 98 UIs (2781 points, 318 comments)
    5. Microsoft demos language model that writes code based on signature and comment (2621 points, 614 comments)
    6. Why does HTML think “chucknorris” is a color? (2565 points, 531 comments)
    7. Windows 95 UI Design (2309 points, 665 comments)
    8. The Linux codebase has over 3k TODO comments, many from over a decade ago (2119 points, 369 comments)
    9. eBay is port scanning visitors to their website (1829 points, 236 comments)
    10. Using const/let instead of var can make JavaScript code run 10× slower in Webkit (1814 points, 525 comments)
  2. 44853 points, 28 submissions: speckz
    1. From August, Chrome will start blocking ads that consume 4MB of network data, 15 seconds of CPU usage in any 30 second period, or 60 seconds of total CPU usage (8434 points, 590 comments)
    2. How To Spot Toxic Software Jobs From Their Descriptions (6246 points, 1281 comments)
    3. A Facebook crawler was making 7M requests per day to my stupid website (2662 points, 426 comments)
    4. Apple, Your Developer Documentation is Garbage (2128 points, 432 comments)
    5. The code I’m still ashamed of (2016) (2105 points, 429 comments)
    6. Slack Is Fumbling Developers And The Rise Of Developer Discords (2095 points, 811 comments)
    7. The Chromium project finds that around 70% of our serious security bugs are memory safety problems. Our next major project is to prevent such bugs at source. (1959 points, 418 comments)
    8. Advice to Myself When Starting Out as a Software Developer (1934 points, 257 comments)
    9. Software patents are another kind of disease (1893 points, 419 comments)
    10. My favourite Git commit (1772 points, 206 comments)
  3. 35237 points, 28 submissions: whackri
    1. It is perfectly OK to only code at work, you can have a life too (6765 points, 756 comments)
    2. Kernighan's Law - Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. (5171 points, 437 comments)
    3. The entire Apollo 11 computer code that helped get us to the Moon is available on github. (3841 points, 433 comments)
    4. Raytracing - in Excel! (2478 points, 168 comments)
    5. Writing userspace USB drivers for abandoned devices (1689 points, 84 comments)
    6. Drum Machine in Excel (1609 points, 60 comments)
    7. fork() can fail: this is important (1591 points, 264 comments)
    8. Learn how computers add numbers and build a 4 bit adder circuit (1548 points, 66 comments)
    9. Heroes Of Might And Magic III engine written from scratch (open source, playable) (1453 points, 84 comments)
    10. Apollo Guidance Computer: Restoring the computer that put man on the Moon (1277 points, 47 comments)
  4. 14588 points, 11 submissions: pimterry
    1. I'm a software engineer going blind, how should I prepare? (4237 points, 351 comments)
    2. The 2038 problem is already affecting some systems (1988 points, 518 comments)
    3. TLDR pages: Simplified, community-driven man pages (1897 points, 182 comments)
    4. JetBrains Mono: A Typeface for Developers (1728 points, 456 comments)
    5. BlurHash: extremely compact representations of image placeholders (930 points, 159 comments)
    6. Let's Destroy C (855 points, 290 comments)
    7. Shared Cache is Going Away (833 points, 192 comments)
    8. XML is almost always misused (766 points, 538 comments)
    9. Wireshark has a new packet diagram view (688 points, 24 comments)
    10. fork() can fail: this is important (460 points, 299 comments)
  5. 14578 points, 9 submissions: magenta_placenta
    1. Trello handed over user's personal account to user's previous company (2962 points, 489 comments)
    2. Feds: IBM did discriminate against older workers in making layoffs - “Analysis shows it was primarily older workers (85.85%) in the total potential pool of those considered for layoff,” the EEOC wrote (2809 points, 509 comments)
    3. Stripe Workers Who Relocate Get $20,000 Bonus and a Pay Cut - Stripe Inc. plans to make a one-time payment of $20,000 to employees who opt to move out of San Francisco, New York or Seattle, but also cut their base salary by as much as 10% (2765 points, 989 comments)
    4. US court fully legalized website scraping and technically prohibited it - On September 9, the U.S. 9th circuit court of Appeals ruled that web scraping public sites does not violate the CFAA (Computer Fraud and Abuse Act) (2014 points, 327 comments)
    5. I Suspect many Task Deadlines are Designed to Force Engineers to Work for Free (1999 points, 553 comments)
    6. Intent to Deprecate and Freeze: The User-Agent string (1012 points, 271 comments)
    7. Contractor admits planting logic bombs in his software to ensure he’d get new work (399 points, 182 comments)
    8. AlphaStar: Grandmaster level in StarCraft II using multi-agent reinforcement learning (396 points, 97 comments)
    9. Half of the websites using WebAssembly use it for malicious purposes - WebAssembly not that popular: Only 1,639 sites of the Top 1 Million use WebAssembly (222 points, 133 comments)
  6. 13750 points, 3 submissions: pedrovhb
    1. Bubble sort visualization (7218 points, 276 comments)
    2. Breadth-first search visualization (3874 points, 96 comments)
    3. Selection sort visualization (2658 points, 80 comments)
  7. 11833 points, 1 submission: flaming_bird
    1. 20GB leak of Intel data: whole Git repositories, dev tools, backdoor mentions in source code (11833 points, 956 comments)
  8. 11208 points, 10 submissions: PowerOfLove1985
    1. No cookie consent walls — and no, scrolling isn’t consent, says EU data protection body (5975 points, 890 comments)
    2. Redesigning uBlock Origin (1184 points, 162 comments)
    3. Playing Around With The Fuchsia Operating System (696 points, 164 comments)
    4. Microsoft's underwater data centre resurfaces after two years (623 points, 199 comments)
    5. Microsoft Paint/Paintbrush in Javascript (490 points, 58 comments)
    6. GitHub shuts off access to Aurelia repository, citing trade sanctions (478 points, 81 comments)
    7. How 3D Game Rendering Works: Texturing (475 points, 22 comments)
    8. Simdjson: Parsing Gigabytes of JSON per Second (441 points, 90 comments)
    9. How 1500 bytes became the MTU of the internet (435 points, 60 comments)
    10. It’s OK for your open source library to be a bit shitty (411 points, 130 comments)
  9. 10635 points, 8 submissions: michalg82
    1. Turning animations to 60fps using AI (3449 points, 234 comments)
    2. Bug #1463112 “Cat sitting on keyboard crashes lightdm” (3150 points, 143 comments)
    3. Heroes Of Might And Magic III engine written from scratch (open source, playable) (1431 points, 172 comments)
    4. Vulkan is coming to Raspberry Pi: first triangle - Raspberry Pi (1318 points, 66 comments)
    5. An EPYC trip to Rome: AMD is Cloudflare's 10th-generation Edge server CPU (431 points, 60 comments)
    6. Microsoft cancels GDC 2020 presence due to coronavirus concerns (Following Sony, Facebook, Kojima Productions, Epic Games, Unity, and more) (371 points, 52 comments)
    7. Moving from reCAPTCHA to hCaptcha - The Cloudflare Blog (278 points, 71 comments)
    8. How much of a genius-level move was using binary space partitioning in Doom? (207 points, 109 comments)
  10. 10106 points, 10 submissions: SerenityOS
    1. Someone suggested I should host my website on my own OS. For that we'll need a web server, so here's me building a basic web server in C++ for SerenityOS! (2269 points, 149 comments)
    2. I've been learning about OS security lately. Here's me making a local root exploit for SerenityOS, and then fixing the kernel bugs that made it possible! (1372 points, 87 comments)
    3. SerenityOS was hacked in a 36c3 CTF! (Exploit and write-up) (1236 points, 40 comments)
    4. One week ago, I started building a JavaScript engine for SerenityOS. Here’s me integrating it with the web browser and adding some simple API’s like alert()! (1169 points, 63 comments)
    5. Implementing macOS-style "purgeable memory" in my kernel. This technique is amazing and helps apps be better memory usage citizens! (1131 points, 113 comments)
    6. SerenityOS: The second year (900 points, 101 comments)
    7. Using my own C++ IDE to make a little program for decorating my webcam frame (571 points, 33 comments)
    8. This morning I ported git to SerenityOS. It took about an hour and some hacks, but it works! :D (547 points, 64 comments)
    9. Smarter C/C++ inlining with attribute((flatten)) (521 points, 118 comments)
    10. Introduction to SerenityOS GUI programming (390 points, 45 comments)

Top Commenters

  1. XANi_ (10753 points, 821 comments)
  2. dnew (7513 points, 641 comments)
  3. drysart (7479 points, 202 comments)
  4. MuonManLaserJab (6666 points, 233 comments)
  5. SanityInAnarchy (6331 points, 350 comments)
  6. AngularBeginner (6215 points, 59 comments)
  7. SerenityOS (5627 points, 128 comments)
  8. chucker23n (5465 points, 370 comments)
  9. IshKebab (4898 points, 393 comments)
  10. L3tum (4857 points, 199 comments)

Top Submissions

  1. 20GB leak of Intel data: whole Git repositories, dev tools, backdoor mentions in source code by flaming_bird (11833 points, 956 comments)
  2. hentAI: Detecting and removing censors with Deep Learning and Image Segmentation by 7cmStrangler (9621 points, 395 comments)
  3. US Politicians Want to Ban End-to-End Encryption by CarrotRobber (9427 points, 523 comments)
  4. From August, Chrome will start blocking ads that consume 4MB of network data, 15 seconds of CPU usage in any 30 second period, or 60 seconds of total CPU usage by speckz (8434 points, 590 comments)
  5. Mozilla: The Greatest Tech Company Left Behind by matthewpmacdonald (7566 points, 1087 comments)
  6. Bubble sort visualization by pedrovhb (7218 points, 276 comments)
  7. During lockdown my wife has been suffering mentally from pressure to stay at her desk 100% of the time otherwise after a few minutes her laptop locks and she is recorded as inactive. I wrote this small app to help her escape her desk by periodically moving the cursor. Hopefully it can help others. by silitbang6000 (7193 points, 855 comments)
  8. It is perfectly OK to only code at work, you can have a life too by whackri (6765 points, 756 comments)
  9. Blockchain, the amazing solution for almost nothing by imogenchampagne (6725 points, 1561 comments)
  10. Blockchain, the amazing solution for almost nothing by jessefrederik (6524 points, 1572 comments)

Top Comments

  1. 2975 points: deleted's comment in hentAI: Detecting and removing censors with Deep Learning and Image Segmentation
  2. 2772 points: I_DONT_LIE_MUCH's comment in 20GB leak of Intel data: whole Git repositories, dev tools, backdoor mentions in source code
  3. 2485 points: api's comment in Stripe Workers Who Relocate Get $20,000 Bonus and a Pay Cut - Stripe Inc. plans to make a one-time payment of $20,000 to employees who opt to move out of San Francisco, New York or Seattle, but also cut their base salary by as much as 10%
  4. 2484 points: a_false_vacuum's comment in Stack Overflow lays off 15%
  5. 2464 points: iloveparagon's comment in Google engineer breaks down the problems he uses when doing technical interviews. Lots of advice on algorithms and programming.
  6. 2384 points: why_not_both_bot's comment in During lockdown my wife has been suffering mentally from pressure to stay at her desk 100% of the time otherwise after a few minutes her laptop locks and she is recorded as inactive. I wrote this small app to help her escape her desk by periodically moving the cursor. Hopefully it can help others.
  7. 2293 points: ThatInternetGuy's comment in Iranian Maintainer refuses to merge code from Israeli Developer. Cites Iranian regulations.
  8. 2268 points: xequae's comment in I'm a software engineer going blind, how should I prepare?
  9. 2228 points: turniphat's comment in AWS forked my project and launched it as its own service
  10. 2149 points: Rami-Slicer's comment in 20GB leak of Intel data: whole Git repositories, dev tools, backdoor mentions in source code
Generated with BBoe's Subreddit Stats
submitted by flpezet to subreddit_stats [link] [comments]

Eklavya Online Interview Questions

Eklavya Online Interview Questions
Eklavya Online, EklavyaOnline, Self Study, Study Tutorial, Technical Interview Questions, Interview Questions Preparation, FAQ, Interview Questions, Most Asked Interview Questions, Rapid Fire, Latest Interview Questions, Updated Interview Questions Answers, Advance Java, Android Interview Questions, Angular 7 Interview Questions, Angular 8 Interview Questions, Angular Interview Questions, AngularJS Interview Questions, API Testing Interview Questions, Artificial Intelligence Interview Questions, ASP.NET Interview Questions, AWS Interview Questions, Backbone.js Interview Questions, Bitcoin Interview Questions, Blockchain Interview Questions, Blog, C Interview Questions, CodeIgniter Interview Questions, Core Java, Data Analytics Interview Questions, Data Structure Interview Questions, DB2 Interview Questions, DBMS Interview Questions, DevOps Interview Questions, Digital Marketing Interview Questions, Django Interview Questions, Dot Net Interview Questions, Drupal Interview Questions, Ember.js Interview Questions, Flutter Interview Questions, Hadoop Interview Questions, HR Interview Questions, Interview Tips, Joomla Interview Questions, Laravel Interview Questions, Machine Learning Interview Questions, Magento Interview Questions, Microsoft Azure Interview Question, MongoDB Interview Questions, MySQL Interview Questions, Node.js Interview Questions, Oracle Interview Questions, Phalcon Interview Question, PHP Interview Questions, PL/SQL Interview Questions, Power BI Interview Questions, Project Management Interview Questions, Pure.CSS Interview Questions, Python Interview Questions, Quality Assurance Interview Questions, R Interview Questions, React Native Interview Questions, Selenium Interview Questions, SEO Interview Questions, Software Testing Interview Questions, SQL Interview Questions, Swift Interview Questions, Tableau Interview Questions, Vue.js Interview Questions, Web Development Interview Questions, Web Services Interview Questions, WordPress Interview Questions
https://preview.redd.it/o8luiag0seu51.jpg?width=770&format=pjpg&auto=webp&s=3c254ee44d1afe334f46b9aaf5cec29ddaada96a
submitted by eklavyaonline to u/eklavyaonline [link] [comments]

eklavya online interview questions

eklavya online interview questions
Eklavya Online, EklavyaOnline, Self Study, Study Tutorial, Technical Interview Questions, Interview Questions Preparation, FAQ, Interview Questions, Most Asked Interview Questions, Rapid Fire, Latest Interview Questions, Updated Interview Questions Answers, Advance Java, Android Interview Questions, Angular 7 Interview Questions, Angular 8 Interview Questions, Angular Interview Questions, AngularJS Interview Questions, API Testing Interview Questions, Artificial Intelligence Interview Questions, ASP.NET Interview Questions, AWS Interview Questions, Backbone.js Interview Questions, Bitcoin Interview Questions, Blockchain Interview Questions, Blog, C Interview Questions, CodeIgniter Interview Questions, Core Java, Data Analytics Interview Questions, Data Structure Interview Questions, DB2 Interview Questions, DBMS Interview Questions, DevOps Interview Questions, Digital Marketing Interview Questions, Django Interview Questions, Dot Net Interview Questions, Drupal Interview Questions, Ember.js Interview Questions, Flutter Interview Questions, Hadoop Interview Questions, HR Interview Questions, Interview Tips, Joomla Interview Questions, Laravel Interview Questions, Machine Learning Interview Questions, Magento Interview Questions, Microsoft Azure Interview Question, MongoDB Interview Questions, MySQL Interview Questions, Node.js Interview Questions, Oracle Interview Questions, Phalcon Interview Question, PHP Interview Questions, PL/SQL Interview Questions, Power BI Interview Questions, Project Management Interview Questions, Pure.CSS Interview Questions, Python Interview Questions, Quality Assurance Interview Questions, R Interview Questions, React Native Interview Questions, Selenium Interview Questions, SEO Interview Questions, Software Testing Interview Questions, SQL Interview Questions, Swift Interview Questions, Tableau Interview Questions, Vue.js Interview Questions, Web Development Interview Questions, Web Services Interview Questions, WordPress Interview Questions
https://preview.redd.it/roo1ibcl4eu51.jpg?width=770&format=pjpg&auto=webp&s=84936d66c0bcdf0f0be4bbec871626ba68a9eebc
submitted by eklavyaonline to u/eklavyaonline [link] [comments]

RiB Newsletter #14 – Are We Smart (Contract) Yet?

We’re seeing a bunch of interesting Rust blockchain and crypto projects, so this month the “Interesting Things” section is loaded up with news, papers, and project links.
This month, Elrond, appeared on our radar with the launch of their mainnet. Although not written in Rust, it runs Rust smart contracts on its Arwen WASM VM, which itself is based on the Rust Wasmer VM. Along with NEAR, Nervos, and Enigma (and probably others), this continues an encouraging trend of blockchains enabling smart contracts in Rust. See the “Interesting Things” section for examples of Elrond’s Rust contracts.
Rust continues to be popular for research into zero-knowledge proofs, with Microsoft releasing Spartan, a zk-SNARK system without trusted setup.
In RiB news, we published a late one-year anniversary blog post. It has some reflection on the changes to, and growth of, RiB over the last year.
The Awesome Blockchain Rust project, which is maintained by Sun under the rust-in-blockchain GitHub org, has received a stream of updates recently, and is now published as the Awesome-RiB page on rustinblockchain.org.
It’s a pretty good resource for finding blockchain-related Rust projects, with links to many of the more prominent and mature projects noted in the RiB newsletter. It could use more eyes on it though.

Project Spotlight

Each month we like to shine a light on a notable Rust blockchain project. This month that project is…
ethers.rs
ethers.rs is an Ethereum & Celo library and wallet implementation, implemented as a port of the ethers.js library to Rust.
Ethereum client programming is usually done in JavaScript with either web3.js or ethers.js, with ethers.js being the newer of the two. These clients communicate to an Ethereum node, typically via JSON-RPC (or, when in the browser, via an “injected” client provider that follows EIP-1193, like MetaMask).
ethers.rs then provides a strongly-typed alternative for writing software that interacts with the Ethereum network.
As of now it is only suited for non-browser use cases, but if you prefer hacking in Rust to JavaScript, as some of us surely do, it is worth looking into for your next Ethereum project.
The author of ethers.rs, Georgios Konstantopoulos, accepts donations to sponsor their work.
Note that there is also a Rust alternative to web3.js, rust-web3.

Interesting Things

News

Blog Posts

Papers

Projects

Podcasts and Videos


Read more: https://rustinblockchain.org/newsletters/2020-08-05-are-we-smart-contract-yet/
submitted by Aimeedeer to rust [link] [comments]

PZM Cash two-level node structure

PZM Cash two-level node structure
☁️ A node is just a computer on which a program is running (for example, a Bitcoin wallet). The nodes are connected to other computers (with the same installed program) to create a cryptocurrency network.
Usually, a node has three purposes:
➖ Follow the rules (consensus online).
➖Share information (about transactions and the amount of funds).
➖Keep a copy of confirmed transactions.
🔗 The blockchain is based on P2P principles (Peer to Peer, or Person to Person). Most networks do not have dedicated servers, there is not a single centralized governing body, but there is consensus among users. Since they are all crucial to the security and integrity of the network, membership in a particular cryptocurrency community is not only exciting but also an obligation.
📝 Regardless of which algorithm is selected for the coin, they all have a decisive common factor — the use of complete nodes to enforce rules and verify transactions.
📍 PZM Cash uses a two-level node structure:
  1. Full node. A full node is a device with installed PZM Cash software, which stores the full current version of the blockchain. A full node can act as a consensus node (to participate in the creation of new blocks — to perform forging). The holder of a full node can actively participate in the formation of the blockchain, constantly grouping incoming transactions into blocks and distributing them over the network. A full node also acts as an audit node. In this context, a node regularly checks (and confirms) the forging results of other nodes and distributes the load across the network, acting as a kind of content delivery network (CDN) for blockchain data.
  2. Light clients. The second type of nodes is light clients. They are called light because they do not have a full version of the blockchain and contain only the data that is important for the node, which allows you to limit the required amount of allocated memory on the HDD and processing power. For this reason, they are a good option to organize a dedicated cryptocurrency wallet. The light client stores only the data that is required to implement custom use cases
📎 Implementation of PZM Cash in JavaScript enabled the use of Web3.js technology, which significantly expanded the capabilities of the PZM Cash Wallet due to unification. The wallet can be used on the resources of our partners (for example, on exchanges or in the casino) without creating a separate wallet for each project. Moreover, the browser implementation eliminates the need for a blockchain core to integrate new resources
🔎 Web3.js is a collection of JavaScript libraries that allows you to remotely interact with a node via HTTP or IPC connection, that simplifies the integration of PZM Cash Wallet through a dedicated API. As a result, partners do not need to deploy a full node for integration.
Join the PZM Cash community, become a node and get rewarded!
https://preview.redd.it/08xkp37rw8t41.png?width=1200&format=png&auto=webp&s=66da17612d0593d69fd21f401cc41666e851781d
submitted by PZMCash to PZMCash [link] [comments]

Blockchain in the Public Sector – Webcast Q&A

Blockchain in the Public Sector – Webcast Q&A
Link to our website: https://block.co/blockchain-in-the-public-sector-webcast-qa/
Block.co fourth webcast titled "Digital Transformation of the Public Sector & The Upcoming Legislation of Blockchain Technology in Cyprus” was an immense success. We gathered some of the best experts in the field, Deputy Minister Kyriacos Kokkinos, Jeff Bandman, Steve Tendon, and Christiana Aristidou to share their experience and discuss with us the latest updates regarding Blockchain in the Public Sector.
In its fourth series of webcasts, Block.co gathered 281 people watching the event from 41 different countries, for a two-hour webcast where guests answered participants’ questions. Following the impressive outcome and response we received from the audience, Block.co’s team has done its best to address all the questions for which public information is available.
Below is a list of the questions that were made and were not answered due to time constraints during the webcast. For the remaining questions from our audience, the team will reach out to our distinguished guests to receive their comments and feedback. Please note, that the below information is only for informational purposes!
Question 1:
How can asset tracing be accomplished with bitcoins and cryptocurrency? And how can this be regulated?
Block.co Team Answer:
Digital Asset tracing may be accomplished with cryptocurrency intelligence solutions such as Cipher Trace and the ICE cryptocurrency intelligence program. FATF (Financial Action Task Force) embarked on a program of work from summer 2018 to June 2019 to strengthen and update the provisions dealing with virtual assets and virtual asset service providers. FATF updated Recommendations in October 2018 and Guidance in June 2019 include several new obligations that apply to VASPs. The so-called “Travel Rule” FATF announced in October 2019 agreed on the assessment criteria for how it will assess countries’ compliance with the new global standards. Under the Travel Rule, the transmitter’s financial institutions must include and send information in the transmittal order such as Information about the identity, name, address, and account number of the sender and its financial institution Information about the identity, name, address and account number of the recipient. The ”Travel Rule” is effectively being applied to cryptoasset transfers when there is a virtual asset service provider (VASP) involved. The scope of focus has broadened from “convertible” virtual assets to any virtual asset. Countries should make sure businesses can freeze crypto wallet or exchange accounts for sanctioned individuals.
Question 2:
Which kind of software or technical knowledge is required to develop cryptocurrency?
Block.co Team Answer:
It depends on the type of cryptocurrency you wish to create, as well as the preferred functionality and features, and characteristics of the token or coin (i.e. will it be pre-mined, what type of hashing or cryptographic algorithm will be used (i.e. proof of work (POW) or proof of stake (POS) or a hybrid of both), etc. Likewise, it is useful to utilize a programming language that is broadly used and supported by a vast and active development community; more data could be found here: more information could be found here: top programming languages in 2015/2016, published by IEEE here, and TIOBE. Hypothetically, you can utilize any programming language to make cryptocurrency digital money, however, the most widely recognized are C, C++, Java, Python, Perl. The beauty of cryptocurrencies is that you can literally have access to the entire Bitcoin and Ethereum open-source programming scripts, and create your alternate coin (altcoin).
Question 3:
Hello all, I want to know about the current status of the European Union Blockchain initiative in currency or public identity.
Block.co Team Answer:
Please refer to the European Services Blockchain Infrastructure (EBSI) website.
Question 4:
Mining is also the process of confirmation of transactions in the Bitcoin Blockchain. What is the process of confirmation of transactions in the Blockchain of an Organization? How do we call it?
Block.co Team Answer:
That would depend on the specific consensus algorithm used for the confirmation of transactions. The consensus algorithm is part of the blockchain protocol that defines the rules on how consensus is reached on that blockchain. In order to participate, entities on the blockchain must obey and follow the same consensus algorithm. Make sure to check our glossary for more information.
Question 5:
How does a small business implement blockchain into its current non-blockchain software systems? Who do they hire to install it?
Block.co Team Answer:
It is easy when there are APIs to connect the various software. For more information, you can check Block.co API.
Question 6:
What is your opinion on digitizing developing economies like India by using AI and blockchain?
Block.co Team Answer:
Watch a very interesting webinar on the matter by Mr. Prasanna:
Question 7:
Blockchain technologies have been around since 2008. What would you say has been the biggest obstacle in widespread adoption?
Block.co Team Answer:
In our opinion, the biggest obstacles are volatile cryptoasset prices, complicated UIs, undefined blockchain technology standards. Moreover, the legislation around the technologies is still now being developed and does not offer legal certainty for broader adoption.
Question 8:
Limitations to Blockchain Usability in the Public Sector?
Block.co Team Answer:
Blockchain in the Public Sector, like any other innovative concept with big potential, cannot be a solution to every problem. Users and developers are still figuring out technological and managerial challenges. From a technological perspective, some aspects such as platform scalability, validation methods, data standardization, and systems integration must still be addressed. From a managerial point of view, the questions include business model transformation, incentive structure, and transaction scale, and maturity. Read more here.
Question 9:
How can these blockchain initiatives be practical for the African context
Block.co Team Answer:
As long as the internet infrastructure is in place, these blockchain initiatives may have the same benefits for the African region.
Question 10:
What are some compelling use cases you’ve seen lately, and how do they serve to further legitimize blockchain as a solution?
Block.co Team Answer:
You can see the global trends from all around the world when it comes to further legitimization as a solution, with China leading the way. Read more here.
Question 11:
How does digital currency manage the issue of money laundering?
Block.co Team Answer:
Depends under which context you are looking at the term digital currency. A digital currency usually refers to a balance or a record stored in a distributed database, in an electronic computer database, within digital files or a stored-value card. Some examples of digital currencies are cryptocurrencies, virtual currencies, central bank digital currencies (CBDCs), and e-Cash. The Financial Action Task Force (FATF) is an intergovernmental body established in 1989 on the initiative of the G7 to develop policies to fight money laundering. Since 2001 FATF is also looking into terrorism financing. The objectives of FATF are to set standards and promote effective implementation of legal, regulatory and operational measures for combating money laundering, terrorist financing, and other related threats to the integrity of the international financial system. FATF is a “policy-making body” that works to generate the necessary political will to bring about national legislative and regulatory reforms in these areas. FATF monitors progress in implementing its Recommendations through “peer reviews” (“mutual evaluations”) of member countries. It is the global watchdog for anti-money laundering & counter-terrorist finance. In June 2019, it updated its guidance paper for Virtual Assets Service Providers (VASPs) regarding the transfer of digital assets. There was an insertion of a new interpretive note that sets out the application of the FATF Standards to virtual asset activities and service providers. To apply FATF Recommendations, countries should consider virtual assets as “property,” “proceeds,” “funds,” “funds or other assets,” or other “corresponding value.” Countries should apply the relevant measures under the FATF Recommendations to virtual assets and virtual asset service providers (VASPs). Read more about the FATF recommendations here).

https://preview.redd.it/58tt7mt1pld51.png?width=1920&format=png&auto=webp&s=d24811c4864ebf02cb9aacc8d6b877a1fbc3756b
Question 12:
To what extent can blockchain be used to improve the privacy of healthcare?
Block.co team Answer:
Please refer to our previous webcast, blog, and articles for more information.
Question 13:
What is Blockchain technology in Shipping?
Block.co team Answer:
The shipping sector has been in the hold of phony maritime institutes charging exorbitant fees via agents, issuing certificates to candidates who do not have the imperative attendance, or those candidates who just pay the fees for the course and ask for the certificate. In view of these fake accreditations, the possibility exists that someone could be harmed or killed, and we could face any number of potential ecological disasters. Having the option to easily verify the genuine origin of a certificate by an approved maritime center is foremost for shipping companies to fast-track their operation and streamline their labor.
Question 14:
Different uses of blockchain other than cryptocurrency?
Block.co team Answer:
Please refer to our blog and glossary.
Question 15:
Upcoming trends in Blockchain concerning Advertising, Marketing, and Public Relations in the Public and Private sectors.
Block.co Team Answer:
Regarding the application of blockchain technology to media copyrights, please see Block.co use case proposal during the Bloomen Ideathon.

https://preview.redd.it/48zc8j38pld51.png?width=3622&format=png&auto=webp&s=79987d1dc7eb8d0c8e32dbce8680b17801d0d244
Question 16:
How to create a decentralized blockchain?
Block.co Team Answer:
An excessive number of individuals feel that blockchain is some supernatural innovation that makes up a decentralized system. In truth, this innovation only enables decentralization. Which means, it permits cryptocurrency to work in a decentralized way. Yet, it doesn’t give any guarantees that it will work that way. Along these lines, it’s really, some outer variables that decide genuine decentralization. Technology, itself never really guarantees it. That is the reason it’s a mistake to expect that if it’s a blockchain — it’s decentralized. From a technical perspective, both blockchains, centralized, and decentralized are comparative, as they take work on distributed peer to peer to network. This implies every node is individually responsible to verify and store the shared ledger. Both Blockchains utilize either a proof-of-work or proof-of-stake mechanisms to make a solitary record and they have to give upper and lower limits on the security and productivity of the system. For more information please refer to our infographic.
Question 17:
Dubai government Blockchain implementation progress?
Block.co Team Answer:
You can see more information here.
Question 18:
How Blockchain and IoT can be integrated to secure data being transmitted through IoT devices.
Block.co Team Answer:
You can read more about it here.
Question 19:
How can the Nigerian government use Blockchain to effectively implement its existing launched eGovernment master plan?
Block.co Team Answer:
Perhaps it can draw its attention to the initiatives of Dubai, Estonia, and Malta to prepare an implementation framework.
Question 20:
What impact is blockchain going to have in today world of business especially in the financial sector
Block.co Team Answer:
Please refer to our recent article titled Benefits of Blockchain Technology in the Banking Industry.
Question 21:
Is Blockchain Technology affect individuals?
Block.co Team Answer:
The social effect of blockchain innovation has just started to be acknowledged and this may simply be a hint of something larger. Cryptocurrencies have raised questions over financial services through digital wallets, and while considering that there are in excess of 3,5 billion individuals on the planet today without access to banking, such a move is surely impactful. Maybe the move for cryptocurrencies will be simpler for developing nations than the process of fiat cash and credit cards. It is like the transformation that developing nations had with mobile phones. It was simpler to acquire mass amounts of mobile phones than to supply another infrastructure for landlines telephones. In addition to giving the underprivileged access to banking services, greater transparency could also raise the profile and effectiveness of charities working in developing countries that fall under corrupt or manipulative governments.
An expanded degree of trust in where the cash goes and whose advantages would without a doubt lead to expanded commitments and backing for the poor in parts of the world that are in urgent need of help. Blockchain technology is well placed to remove the possibility of vote-apparatus and the entirety of different negatives related to the current democratic procedure. Obviously, with new innovation, there are new obstacles and issues that will arise, yet the cycle goes on and those new issues will be comprehended with progressively modern arrangements. A decentralized record would give the entirety of the fundamental information to precisely record votes on an anonymous basis, and check the exactness and whether there had been any manipulation of the voting procedure.
Question 22:
As Andreas Antonopoulos often says in his MOOC: ”is a blockchain even needed?” Ie. Are there better methods?
Block.co Team Answer:
In combination with nascent technologies, IoT, distributed computing, and distributed ledger technologies, governments can provide inventive services and answers for the citizens and local municipalities. Blockchain can provide the component to create a safe framework to deal with these functions. In particular, it can provide a safe interoperable infrastructure that permits all smart city services and capacities to work past presently imagined levels. On the off chance that there were better techniques, they would be researched.
Question 23:
Would any of this be also applicable to the educational sector (as part of the general public sector), and if so in which way?
Block.co Team Answer:
Yes, please refer to our Webcast on Education and our blog post.
Question 24:
Will we be able to get a hold of this recording upon completion of the meeting?
Block.co Team Answer:
Yes, here is a link to the recording of our webcast Blockchain in the Public Sector.
Question 25:
Was wondering if there are any existing universal framework in governing the blockchain technology?
Block.co Team Answer:
The short answer is NO, as this framework is currently being prepared in collaboration with the various Member States.
We would like to thank everyone for attending our webcast and hoping to interact with you in future webinars. If you would like to watch the webinar again, then click here!
For more info, contact Block.co directly or email at [[email protected]](mailto:[email protected]).
Tel +357 70007828
Get the latest from Block.co, like and follow us on social media:
✔️Facebook
✔️LinkedIn
✔️Twitter
✔️YouTube
✔️Medium
✔️Instagram
✔️Telegram
✔️Reddit
✔️GitHub
submitted by BlockDotCo to u/BlockDotCo [link] [comments]

New Ethereum Developer Course

Hey All! We've been working heads down on a new developer curriculum for the last year. We're excited to announce it's finally here.
This curriculum is composed primarily of in-browser coding tutorials and challenges (no need to install any dependencies!). It also includes videos and guides which will help you apply what you learned in your local development environment when you're done with the course.
The full course includes:
Learning JavaScript: A collection of JavaScript coding tutorials and challenges which thoroughly teach JS from scratch with the latest ECMAScript features. Networking: Writing Asynchronous Code and communicating with servers through APIs Data Structures: Building and understanding data structures that are important to blockchain programming (especially trees and linked lists) Blockchain: Understanding Bitcoin, Proof-Of-Work, Digital Signatures and building core blockchain data structures. As well as learning about Ethereum, the EVM, ethers.js, and the Ethereum Node JSON-RPC API. Smart Contracts: Our largest section! This includes 21 coding tutorials and challenges thoroughly teaching the latest Solidity version 0.6.x from the very basics. Decentralized Applications: Deploy Smart Contracts and interact with them through ethers.js. You'll have three new working decentralized applications at the end of this section which you'll be able to extend upon to build bigger projects!
You can find the full listing here: https://www.chainshot.com/curriculum
The course is available through a monthly subscription. We'll also be starting live coding classes next month for all subscribers!
We hope you'll choose to learn with us. Let us know if you have any questions/concerns. All feedback is welcome. :)
submitted by dan-nolan to ethdev [link] [comments]

JavaScript Wallet Tutorials

There’s a lot of scattered or old information about this and I was hoping someone knows of some resources about how to do this.
I was wondering if there were any tutorials that explained how to create a Bitcoin Cash wallet from scratch using a JavaScript library (if one exists). Specifically, without having to download the whole blockchain (connecting to an API? Light wallet?) and then creating the front-end interface.
Bonus points for easy to follow or a tutorial that can take you from start to finish.
Even more bonus points (paid in BCH) for anyone willing to be a mentor for this. I’m serious about getting started but the barrier for front-end devs like me is still pretty high.
submitted by razorsyntax to btc [link] [comments]

40+ Free Udemy ( Expires in 1-2 Days)


  1. https://www.udemy.com/course/modern-java-programming/?couponCode=FREECOUPON
  2. https://www.udemy.com/course/introduction-to-the-basics-of-melt-pour-soap/?couponCode=62B88FE27E2666C3FF1D
  3. https://www.udemy.com/course/fundamentals-of-accounting-for-business-owners/?couponCode=ACCOUNT3
  4. https://www.udemy.com/course/personal-budgeting-how-to-budget-and-save/?couponCode=BUDGET4
  5. https://www.udemy.com/course/introduction-to-forex-learn-to-trade-forex-by-yourself/?couponCode=FXJUNE1FREE
  6. https://www.udemy.com/course/postgresql-veritabani-programlama-temelleri-ve-sql/?couponCode=EEB9DDC96482C335C773
  7. https://www.udemy.com/course/transformational-leadership-soft-skills/?couponCode=8B44F1B35CF632E8A685
  8. https://www.udemy.com/course/write-what-ranks/
  9. https://www.udemy.com/course/funnels-training-for-beginners/?couponCode=JUNELIMITED
  10. https://www.udemy.com/course/the-complete-focus-mastery-course-brain-concentration/?couponCode=BF584CE6BC69D50162ED
  11. https://www.udemy.com/course/the-complete-personal-productivity-course-business-life/?couponCode=DEEA822C577689CE4981
  12. https://www.udemy.com/course/the-complete-telecommuting-course-remote-work-work-life/?couponCode=8E1F48E73F62169F617B
  13. https://www.udemy.com/course/the-complete-life-purpose-course-personal-success-for-you/?couponCode=42AFA7FBFDE841FFD31F
  14. https://www.udemy.com/course/the-complete-powerpoint-and-presentation-skills-masterclass/?couponCode=4F95D81B3E69F9BD975F
  15. https://www.udemy.com/course/complete-time-management-course-raise-personal-productivity/?couponCode=D0FA560E35B0D2AB9A8D
  16. https://www.udemy.com/course/complete-personal-development-personal-transformation-course/?couponCode=E4D6D93DFB4054302160
  17. https://www.udemy.com/course/the-complete-train-the-trainer-bootcamp-beginners-advanced/?couponCode=D7639BF2F756D304483D
  18. https://www.udemy.com/course/complete-media-training-master-class-confidence-on-camera/?couponCode=A6C45949497CD4344D2E
  19. https://www.udemy.com/course/the-beginning-of-a-new-era-2020/
  20. https://www.udemy.com/course/uipath-data-scrapping-excel-application-scope/
  21. https://www.udemy.com/computer-hacking-fundamentals/
  22. https://www.udemy.com/course/web-services-api-step-by-step-beginner-tutorial/
  23. https://www.udemy.com/course/jenkins-beginner-tutorial-step-by-step/
  24. https://www.udemy.com/jmeter-step-by-step-for-beginners/
  25. https://www.udemy.com/course/deep-web/
  26. https://www.udemy.com/dmca-copyright/
  27. https://www.udemy.com/course/html-javascript-bootstrap-certification-course/?couponCode=YOUACCELJUNEBUG
  28. https://www.udemy.com/course/dinnertime-conversation-on-bitcoin-and-blockchain/?couponCode=0849875FFDC18222FC21
  29. https://www.udemy.com/course/eft-emotional-freedom-techniques-for-hair-pulling-skin-picking/?couponCode=EFTHPSPEXPJUNE62020
  30. https://www.udemy.com/introduction-cloud-computing/
  31. https://www.udemy.com/course/security-soc-analyst-interview-questions-and-answers/?couponCode=ANANDGURU-SOCQA-FREE
  32. https://www.udemy.com/course/cisco-ccna-spanning-tree-basics/
  33. https://youaccel.com/admin/cdisplay.php?promocode=FREEBIESGLOBAL&promocc=yes&tsrc=225691&cid=889006
  34. https://www.udemy.com/course/identity-federation-for-amazon-web-services/
  35. https://www.udemy.com/course/build-your-own-cyber-lab-at-home/
  36. https://www.udemy.com/course/certified-secure-netizen/
  37. https://www.udemy.com/math-how-to-facto
  38. https://www.udemy.com/course/the-complete-train-the-trainer-bootcamp-beginners-advanced/?couponCode=D7639BF2F756D304483D
  39. https://www.udemy.com/course/complete-time-management-course-raise-personal-productivity/?couponCode=D0FA560E35B0D2AB9A8D
  40. https://www.udemy.com/course/complete-personal-development-personal-transformation-course/?couponCode=E4D6D93DFB4054302160
  41. https://www.udemy.com/course/the-complete-powerpoint-and-presentation-skills-masterclass/?couponCode=4F95D81B3E69F9BD975F
  42. https://www.udemy.com/course/complete-media-training-master-class-confidence-on-camera/?couponCode=A6C45949497CD4344D2E
  43. https://www.udemy.com/course/python-complete-bootcamp-2019-learn-by-applying-knowledge/?couponCode=4BF89187AC9E2E4CC593
submitted by ViralMedia007 to FREECoursesEveryday [link] [comments]

Monthly Nano News: December 2019 + Year Recap Special

This is what NANO has been up to lately. I don't think I lie if I say it has been quite an amazing year!
See you soon and happy new year! Something nice is coming soon that I have been working on for a while, stay tuned..

December 2019

November 2019

October 2019

September 2019

August 2019

July 2019

June 2019

May 2019

Apr 2019

Mar 2019

Feb 2019

Jan 2019


More news here: https://nanolinks.info/news

https://preview.redd.it/9sw5nkoxlt741.png?width=749&format=png&auto=webp&s=3426d4eafb9430c0304a6d161596102536df4318
submitted by Joohansson to nanocurrency [link] [comments]

Eventi del mese: Dicembre 2019




---
Organizzate eventi? Ne conoscete altri? Segnalateli a u/-Defkon1-
submitted by -Defkon1- to ItalyInformatica [link] [comments]

Amazing news you might have missed (partnerships, new tools, new relationships)

I wanted to make this post right now when moral is (once again) at a low point. NANO is such a coin that is amazing and has an amazing community, yet it has to pass through many trials and tribulations to prove its own worth. Still NANO and the NANO FOUNDATION keeps on chugging, overcome each obstacle while only getting better. Yet the battle hasnt been won yet and we might face yet another dry season before rain season starts to happen.

A lot of you are well aware of the upcoming technical updates (V19 and V20) as this usually is the main focus of both the foundation and this sub. Because of that and the whole LIBRA annoucement overwelming the community at large, the latest news on business opportunities, new relationships and even partherships that brings direct exposure to the (targeted) public have been overlooked. All of this has been talked about in the weekly update (this medium post).

Now a quick note here (and a small jab to the community manager too) is that almost zero hype has been created from all of these GREAT news. If it was any other coin, even 1/10 of all these great changes would have been enough to cover the frontpage of CC and talked about in various blogposts/vlogs etc. We are talking about several Universities here that can have the option to use nano to pay for their lunch/coffee. That alone is HUGE and can be a great real life adoption as universities are places that usually are more friendlier towards innovation.

Lets dissect the weekly post a bit more and follow the links up to see what the announcements really mean. In the light of focussing mainly on business orientated news (partnerships, exposure, new relationships etc.), some things ofc will be skipped:

Interview Financial Times
First what is mentioned is the interview of Colin with financial times currency correspondent Eva Szalay. Here is her page on the official website of the Financial Times UK: https://www.ft.com/stream/ff54f58c-6708-45fa-8c26-5b5baa7eb794
Now i cant find the interview yet, so i take it hasnt been published yet. Still, if this happens, it would mean great exposure as the FT is seen as a credible source of news. This would expose NANO to real investors alone.

WIREX
Afterwards, the CEO of WIREX spoke:
Wirex CEO Pavel Mateev took to the stage afterward to discuss some of the challenges his company has faced in working to bridge the gap between cryptocurrency and traditional fiat currencies over the last five years. Pavel also took some time to outline Wirex’s intent to expand its services beyond Europe — to North America, Asia, and even Africa.

The fact that Wirex, which also have adopted NANO, speaks at a NANO conference already speaks of measures. Wirex on that note alone can be seen as a 'partner' of NANO, i.e. one of NANO's partnerships. Its interesting to note Wirex also intends to expand in to Africa.
For those who dont know what Wirex is, its a creditcard where you pay with crypto (and it says its accepted everywhere were visa is accepted too): https://wirexapp.com/ Within that context, NANO can already be used to buy regular things with through a creditcard from Wirex. This is yet another step for mainstream adoption.

Kappture
Still these are small things to consider (even though they do start to stack up!), the biggest announcement must be the partnership/adoption from Kappture:
Cutting-edge electronic point-of-sale device company, Kappture, presented their alpha integration of Nano into its merchant devices. The integration will mark the forward-thinking company’s first venture into offering users the opportunity to pay with cryptocurrency. With highly regarded institutions such as Saïd Business School and the University of West London among the users of the EPoS system, this integration will represent a significant step forward in the discovery of natural use cases of secure and decentralized cryptocurrency — with the ultrafast and fee-less transactions of Nano leading the way.

This might have been the biggest news of the week if Libra announcement didnt came out. Kappture adoption for NANO means exposure to a WILD range of publics. Please go to Kappture own website and see where there devices are being used. We are talking about:

- The Championships Wimbledon
- Football stadiums
- Opera house
- Cricket
- Rugy
- multiple universities (including Oxford) and business schools
- Several business clients including Peugeot

This is true adoption and major exposure to such a variety of people. These are mainly Europe/London based, which means NANO is set for adoption in the West (Europe). With wirex being a visa card where you can pay with NANO all over the world (as long as they accept visa), Kappture will give you the oppertunity to directly sell your NANO on several events/places through their ePOS system.

If that wasnt enough the FOUNDATION has come with its own ePOS system, that is crypto agnostic (i.o.w. it accepts all crypto) yet still is secure and private:

Appia
The much-anticipated unveiling of the Appia payment ecosystem capped the days' proceedings. Appia is a crypto agnostic service providing, amongst many other things, signed payment requests for strong customer protection. Built on the new Manta protocol, Appia focuses on security, privacy, and multi-channel capability. Appia will help simplify the process of both paying with cryptocurrency as a consumer and accepting it as a merchant.

This is not only amazing news for NANO, this is amazing news for the WHOLE crypto community! If it is cheap to make and easy to setup (targets that can be worked on), it could spread adoption all over the world.

Africa
Colin himself have said that developing countries will also become a business focus for the NANO foundation. Certain African countries already use digital cash called m-pesa and some have already become the first cashless society of earth. Its one of the reasons why Africa is very promising for blockchain currencies (as they can be trustless/permisionless/secure unlike m-pesa). Not only that, with Appia, Wirex and ofc the current (mobile/web) wallets and its tech, NANO FOUNDATION has strong tools for adoption in Africa.

Possible second layer privacy option
Now just think about NANO having a second layer privacy mixer (copying from the BANANO devs), and its hard not to be exited: https://medium.com/banano/introducing-camo-banano-bananos-privacy-layer-98a5bb0ecdb1. The library is already there. It can't be that hard to implement it, though its smart to first wait out and see how it works on BANANO (ironing all the bugs out) before implementing it on NANO. This is a fine example why it is extremely good for NANO to have a fork like BANANO, as it can become a testing ground for new tech (we really should be happy and Co exist/co work with each other in that front in my opinion).

This is part from the BANANO medium post, but its well worth to mention, especially the last part:
First of all, Camo BANANO Phase 1 as described here and available for now allows for confidential transactions, but not for real privacy yet. At the current stage, Camo BANANO is the equivalent of opening 20 BANANO accounts on your BANANO Vault and using all 20 accounts to do transactions, meaning that any person you’d interact with only knows 1/20th of your stack. Camo BANANO allows to make this process easier (as kind of a manual mixer) and thereby in its Phase 1 adds confidentiality to BANANO transactions as proof of concept.
Camo BANANO will, however, be further developed, and Phase 2 of Camo BANANO requires adding a new block type to the BANANO protocol, finally allowing for sum-of-squares private transactions.
Of interest for developers: Also released recently under MIT License and open to use for everyone, for every purpose (though it’s not guaranteed to be suitable for any purpose of course): BANANOjs library with Camo capability V 1.0 (check out the readme for the supported API and camo commands). BANANOjs is a JavaScript library that can be used to convert seeds to public keys, sign blocks, and more. It also has Camo BANANO functions, meaning any developer can send and receive transactions using the Camo BANANO L2 protocol, without doing this manually by using the Camo BANANO website.

These all on their own are worthy of their own medium post and should be talked about in vlogs/blogs etc. And i do wonder, with such wonderful news, why this all has been kept in a short medium post with not that even a lot of claps. These are major announcement yet are being kept quite for some reason. Maybe there is a reason for it though. As Libra has come and Bitcoin is taking off, maybe the marketing crew is abiding their time before dropping these bombs in to the public. Also, like i said, NANO is going to have to endure one last test, one last difficult price depression, before it has the chance to spread it wings.

TLDR:
- Financial times UK interview (exposure to serious investors)
- Wirex being a serious partner of NANO (also, paying with NANO world wide everywhere VISA is accepted!)
- Kappture partnership that includes exposure to several football/cricket/rugby clubs, theaters, universities (including Oxford), and other business (like Peugeot) - with this a good part of the Western/UK demography gets targeted, meaning immense exposure in the UK.
- Appia device, agnostic crypto ePOS to lower the bar accepting crypto in your store World Wide
- Oppertunities in Africa
- Possible second layer mixer for privacy option (through BANANO development)
submitted by Redac07 to nanocurrency [link] [comments]

Blockchain Websocket API - JavaScript How to use Blockchain Wallet API v2 How To Use a Blockchain.com wallet API is the easiest Wallet Objects API - Java Quick Start Blockchain API Developer

The aim of this tutorial series, is to help you understand blockchain technology by developing one. If you want to make a real cryptocurrency something like coinmechanic.io is a much smarter… Blockchain.com Exchange-APIs Erstellen Sie kostenlos Bitcoin-Apps auf der Blockchain.com Exchange-API. Fordern Sie einen Exchange-API-Schlüssel an Anmeldung. Blockchain.com Exchange-APIs. Websockets Nutzen Sie die Websocket-API, um Marktdaten zu erhalten und in Echtzeit mit dem Handelssystem zu interagieren. Jede Nachricht kommt im JSON-Format und Handelsnachrichten verwenden den FIX-Standard ... Blockchain Bitcoin Developer APIs - Java. Contribute to blockchain/api-v1-client-java development by creating an account on GitHub. The Blockchain API will allow you to send & receive bitcoin, query JSON data on blocks and transactions, and get information regarding the blockchain. Almost all functionality and data you see on this website is available through API calls. Blockchain.info provides official API libraries for Python, Java, .NET (C#), Ruby, Node, and PHP.. The request limits are as follows: This is another API by BraveNewCoin that provides reference rates for Bitcoin, Ethereum, Litecoin and many others for over 3,000 cryptocurrency markets.. Wallet Integration. This API has no wallet integration. Transaction Support. This API has no transaction support. Price. The Intraday Reference Rates API is free to use up to 600 API requests per month.

[index] [45140] [18404] [44554] [40711] [16593] [8169] [44486] [37056] [20971] [40630]

Blockchain Websocket API - JavaScript

This video is part of the course Learn Blockchain By Building Your Own In JavaScript. Take the entire course here: https://www.udemy.com/build-a-blockchain-i... http://bit.ly/bitcoincourse (full course) This will demo creating a Bitcoin address and transaction using JavaScript and the Bitcore.io library. Full source ... Walkthrough the Wallet Objects API Java Quick Start sample. Video tutorial on using blockchain.info's websocket API to monitor a specific Bitcoin address in real-time. Building Bitcoin Websites Book: https://www.amazo... How to set up blockchain.info wallet service API. Blockchain Wallet API V2 My Book: https://www.amazon.com/Building-Bitcoin-Websites-Beginners-Development/dp...

#