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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 summaryDragonchain 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 PoCIn 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.
A live proof of concept showing hundreds of thousands of transactionsOn 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:
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.
How it works & scales
Architectural ScalingDragonchain’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 ScalingAn 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 DeploymentDragonchain 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 ScalingDragonchain’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.
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
How to run itBuilding 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...
ArchitectureDragonchain 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.
APIs (on chain & off)
Known issues or tradeoffs
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.
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.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
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 considerDragonchain’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.
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 transactionsDragonchain 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.
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.
Users should be able to view their balances & transactions via a blockchain explorer-style interfaceFrom 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 & simpleWithdrawing 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
Documentation should be clear and completeFor 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 Points: Show us how it works. Do you have an idea for a cool new use case for Community Points? Build it!
TIMECommunity 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 DenDragonchain 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 elseUsers 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 elseThrough 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 offlineIf 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 availableTo 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 pointsSee above
Compatibility with HSMs & hardware walletsFor 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.
Minting/distributing tokens is not performed by Reddit directlyThis 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 scalableThis is possible and scalable with interaction between Dragonchain Reddit system and Ethereum token contract(s).
Fully open-source solutions are strongly preferredDragonchain is fully open source (see section on Disney release after conclusion).
ConclusionWhether 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 SourceThe 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.
Open SourceIn 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:
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 FoundationThe Dragonchain Foundation was created on January 17, 2017. https://den.social/l/Dragonchain/24130078352e485d96d2125082151cf0/dragonchain-and-disney/
import vectorbt as vbt import numpy as np import yfinance as yf from itertools import combinations, product # Fetch daily price of Bitcoin price = yf.Ticker("BTC-USD").history(period="max")['Close'] price = price.vbt.split_into_ranges(n=3) # Define hyper-parameter space # 49 fast x 49 slow x 19 signal fast_windows, slow_windows, signal_windows = vbt.indicators.create_param_combs( (product, (combinations, np.arange(2, 51, 1), 2), np.arange(2, 21, 1))) # Run MACD indicator macd_ind = vbt.MACD.from_params( price, fast_window=fast_windows, slow_window=slow_windows, signal_window=signal_windows, hide_params=['macd_ewm', 'signal_ewm'] ) # Long when MACD is above zero AND signal entries = macd_ind.macd_above(0) & macd_ind.macd_above(macd_ind.signal) # Short when MACD is below zero OR signal exits = macd_ind.macd_below(0) | macd_ind.macd_below(macd_ind.signal) # Build portfolio portfolio = vbt.Portfolio.from_signals( price.vbt.tile(len(fast_windows)), entries, exits, fees=0.001, freq='1D') # Draw all window combinations as a 3D volume fig = portfolio.total_return.vbt.volume( x_level='macd_fast_window', y_level='macd_slow_window', z_level='macd_signal_window', slider_level='range_start', template='plotly_dark', trace_kwargs=dict( colorscale='Viridis', colorbar=dict( title='Total return', tickformat='%' ) ) ) fig.show()
Sidenote: my read.cash wallet that gets the fees takes a few hours to open now, and it's barely 9 months old! I find current solutions unacceptable, I want my wallet to open up immediately and handle 100MB blocks as well as 60KB blocks.I don't want to develop for tiny blocks or tiny wallets that need to be changed every few months.. I want huge blocks! I don't want mainnet to be as brittle as to break at the first sight of success.
https://preview.redd.it/diqv9h4jjmv51.png?width=2024&format=png&auto=webp&s=fb0bed1c50b428b33f03bb84d9f68eff4890cc67submitted by UniLendFinance to UniLend [link] [comments]
As always UniLend is seeking to make strong partnerships with industry titans and leaders. Today we are pleased to announce our latest collaboration with the well-known Ankr team, who will be providing infrastructure and various services to our project.
About Ankr & our PartnershipUniLend has deep connections with the Ankr team that go back before the start of the UniLend project, so we are excited to continue this mutually beneficial partnership. Like all true decentralized projects UniLend will also need powerful and secure nodes from different geographic locations to help bolster our platform. We are pleased to have such a strong ally at our backs helping to run one of our nodes via their robust and direct Ethereum API access.
Ankr has established a reputation for creating gateways to Web 3.0 by connecting consumers, developers and enterprises to the new internet in a few easy clicks. It is well known that Ankr already supports 30+ nodes for many prominent networks like Bitcoin, Ethereum and Binance so we know we are in good hands. Our new partner Ankr is not only known for running robust nodes: they also produce developer API’s, and Enterprise solutions.
To Unlocking the Future for Many
Our project is supporting and offering comprehensive functionality for a vast range of digital assets like permissionless listing of any ERC20 asset, trading, lending and borrowing. Also, our native token UFT will allow for complete decentralized governance. As our project continues to grow, so will our partnership with Ankr and their services. We raise a toast to truly unlocking the future of decentralized finance together!
Relevant UniLend & Ankr LinksGet the latest updates from UniLend here:
Follow Ankr on social media
Anton Sokolov has recently joined the Zano team. ... For the last months Anton has been working on theoretical work dedicated to log-size ring signatures. These signatures theoretically allows for a logarithmic relationship between the number of decoys and the size/performance of transactions. This means that we can set mixins at a level from up to 1000, keeping the reasonable size and processing speed of transactions. This will take Zano’s privacy to a whole new level, and we believe this technology will turn out to be groundbreaking!If successful, this scheme will make Zano the most private, powerful and performant CryptoNote implementation on the planet. Bar none. A quantum leap in privacy with a minimal increase in resource usage. And if there's one team capable of pulling it off, it's this one.
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BlockFi ($10 in Free Bitcoin + Earn up to 8.6% Per Year on Crypto Deposits)Sign up for BlockFi (https://blockfi.com/?ref=c316afd8) and receive $10 in free Bitcoin bonus when you deposit $100 or more in crypto and maintain the qualifying balance until the following interest payment day. The bonus is deposited on your first monthly interest payment. Do not withdraw from your balance or you WILL LOSE the Bitcoin bonus payment. Just wait until you receive your Bitcoin bonus then you can withdraw from your account.
This promotional $10 Bitcoin bonus is available to all customers globally!
Plus you'll earn up to 8.6% per year on the cryptos you deposit into your BlockFi account like Bitcoin, Ethereum, Litecoin, PAX, GUSD and USDC. Interest is compounded monthly and paid out on the 1st of every month.
You can download the iOS app (https://apps.apple.com/us/app/blockfi/id1506274532) or Android app (https://play.google.com/store/apps/details?id=com.blockfi.mobile). Be sure to use referral code c316afd8 during signup to get your $10 Bitcoin bonus after initial $100 or more deposit.
BlockFi supports bank wire transfers and deposits via crypto. If you want to buy crypto and deposit on BlockFi, you will need to use Coinbase, Gemini, Crypto.com or Binance to link your bank account to buy crypto and transfer to BlockFi.
In addition to earning interest on your crypto deposits, BlockFi allows you to exchange cryptos like BTC for Ethereum and take out a loan without selling your crypto.
BlockFi is available to all customers globally including in all 50 US states! BlockFi is a licensed and regulated company in the United States.
Remember to sign up at https://blockfi.com/?ref=c316afd8 to get your $10 in free Bitcoin bonus.
Gemini ($10 in Free Bitcoin)Get $10 in free Bitcoin when you signup for Gemini, a US-based regulated and licensed cryptocurrency exchange. This offer is available to NEW USERS ONLY residing in the United States, United Kingdom, Canada, Hong Kong, Singapore, and South Korea.
Follow these steps:
Gemini is regulated by the New York State Department of Financial Services (NYSDFS) and was founded in 2014 by Cameron and Tyler Winklevoss.
Coinbase ($10 in Free Bitcoin + $171 in Bonus Crypto)Sign up for a Coinbase cryptocurrency account (https://www.coinbase.com/join/5a29d6adad50d7010b47bac0) and get $10 of free Bitcoin (BTC) after you buy or sell $100 or more in cryptocurrency like Bitcoin, Ethereum, and Bitcoin Cash. You will also need to verify your identity. This offer is available to all customers globally!
In addition, visit Coinbase Earn (https://coinbase.com/earn/comp/invite/fqns7918) and get up to $171 in free cryptocurrency by learning, watching videos, and answering simple questions about other cryptocurrencies like EOS (up to $50 bonus), Stellar Lumens (up to $50 bonus), and Compound (up to $59 bonus) without any deposit or trading required. You can easily make up to $160 in free cryptocurrency and cash out the money back to your bank!
You can also earn 0.15% annual interest holding USDC tokens (for US customers) and 4% annual interest staking Tezos tokens (for US, UK, and EU customers)!
Coinbase is one of the most trusted and easiest place to buy, sell, and manage your digital currency portfolio and its available in 100+ countries around the world! Coinbase allows you to deposit/withdrawal funds via free bank transfer, credit/debit card or bank wire.
Remember to use my referral link to get your $10 of free Bitcoin after trading $100 or more in crypto plus another $115 in free crypto bonuses - https://www.coinbase.com/join/5a29d6adad50d7010b47bac0
Liquid (Earn 10% Back + 50% Discount on All Crypto Trades)Sign up for Liquid (https://www.liquid.com/sign-up/?affiliate=InZmUQNE727430), the world's most comprehensive and secure cryptocurrency trading platform, and earn 10% back on all trading fees paid on your cryptocurrency trades like Bitcoin, Ethereum, Bitcoin Cash, XRP, and Alt Coins including Celsius (CEL) and Crypterium (CRPT) tokens. Plus receive a 50% trading fee discount by paying in Qash tokens. Liquid offers trading fees as low as 0%.
Plus you can deposit fiat/cash via bank transfer to your Liquid account in currencies like USD, EUR, SGD, AUD, PHP and HKD.
Liquid is NOT available to users in United States of America and Japan.
To earn 10% back and 50% discount on all crypto trading fees, sign up at https://www.liquid.com/sign-up/?affiliate=InZmUQNE727430 or use referral/promo code InZmUQNE727430 during registration.
If you would like to earn additional signup bonuses with the Celsius (free $20 in Bitcoin after $200+ crypto deposit) and Crypterium (free $5 bonus after $60 or more in crypto trades) wallet apps, visit https://celsiusnetwork.app.link/1891962be1 and https://crypterium.app.link/DU5iX9vsDY
Binance USSign up for a free account on Binance.US to buy and sell cryptocurrency and enjoy fees as low as 0.075%! Binance US allows you to connect a bank account and deposit cash directly via ACH deposit for free to buy crypto. Or you can use a debit card to buy crypto.
Please use my referral link https://www.binance.us/?ref=35011786 or use referral ID 35011786 during registration.
Binance.US is only available to US customers and in most states, but not all states on its initial launch. At the moment, Binance.US accounts will NOT be available in the following states: Alabama, Connecticut, Florida, Hawaii, Idaho, Louisiana, New York, North Carolina, Texas, Georgia, Vermont, Washington.
Crypterium ($5 Cash Bonus)Have you tried the Crypterium Crypto Wallet App for iOS and Android? Sign up for Crypterium at https://crypterium.app.link/DU5iX9vsDY (or use referral code cdgy4 during signup) and get a $5 cash bonus by verifying your identity and make a transaction worth €50/$60 or more (like buy or sell crypto) via the Crypterium Wallet app.
Crypterium lets you buy, send, exchange or cash out crypto, and even get the first global crypto card! The Crypterium Wallet is regarded as one of the most promising fintech solutions by KPMG and H2 Ventures. Making crypto as easy to spend as cash!
Plus for a limited time, get a Crypto Loan in USDT from Crypterium for 0% interest for up to 12 months by using Bitcoin or Ethereum as collateral. Get approved in as little as 30 seconds without credit checks!
The Crypterium App supports cryptocurrencies such as Bitcoin, Ethereum, Litecoin, Bitcoin Cash, CRPT, XRP, LINK, MKR, QASH, BAT, ZRX, REP, OMG, USDC, USDT, DAI, and EURS.
Register at https://crypterium.app.link/DU5iX9vsDY to receive a link to download the app or use my referral code cdgy4 during signup at https://crypterium.com and get your $5 cash bonus!
Original Bitcoin client/API calls list allows to do the listing the bitcoin addresses in your wallet easily via listreceivedbyaddress. It normally lists only addresses which already have received transactions, however you can list all the addresses by setting the first argument to 0, and the second ... Access free crypto API such as real-time market price, historical trading, tickers, and exchange data for cryptocurrencies. ... Track over 7,000 coins such as bitcoin, litecoin, ethereum, and more from more than 400 exchanges and growing Comprehensive historical data 21 endpoints and more coming soon Trusted by industry leaders. The CoinGecko data market APIs are a set of robust APIs that ... Common operations Listing my bitcoin addresses. Listing the bitcoin addresses in your wallet is easily done via listreceivedbyaddress.It normally lists only addresses which already have received transactions, however you can list all the addresses by setting the first argument to 0, and the second one to true. Bitcoin API call list (as of version 0.3.20.2) with code samples and returned values. Make you services with always fresh data by our Bitcoin stream and rest api. Toggle navigation. Switch theme BitcoinChain.com. Home Explorer Lightning Markets Pools Nodes Info Switch theme BitcoinChain.com API v1.0. General. Our APIs offer automated access to the website’s database and services. It provides the methods to get Bitcoin blockchain data and interact with it as well as the ...
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Learn to create a Bitcoin Price Index Watcher in HTML5. In that tutorial, you will learn to make AJAX requests to get the Bitcoin Price Index from the Coin Desk API in US Dollars, Great Britain ... In this video I talk about the basics of using Python requests by showing you how to call the Coinbase Bitcoin Price Index API. You can see the API docs here... Get the current price of bitcoin. Article: https://medium.com/@randerson112358/get-bitcoin-price-in-real-time-using-python-98b7393b6152?source=your_stories_... Confused about APIs and JSON? Looking to run an arbitrage business or build a data intensive site? Well this video is for you. This is the first of our video... An introduction to the Bitcoin JSON-RPC tutorial series. BTC: 1NPrfWgJfkANmd1jt88A141PjhiarT8d9U