listwalletdir — Bitcoin

Gridcoin 5.0.0.0-Mandatory "Fern" Release

https://github.com/gridcoin-community/Gridcoin-Research/releases/tag/5.0.0.0
Finally! After over ten months of development and testing, "Fern" has arrived! This is a whopper. 240 pull requests merged. Essentially a complete rewrite that was started with the scraper (the "neural net" rewrite) in "Denise" has now been completed. Practically the ENTIRE Gridcoin specific codebase resting on top of the vanilla Bitcoin/Peercoin/Blackcoin vanilla PoS code has been rewritten. This removes the team requirement at last (see below), although there are many other important improvements besides that.
Fern was a monumental undertaking. We had to encode all of the old rules active for the v10 block protocol in new code and ensure that the new code was 100% compatible. This had to be done in such a way as to clear out all of the old spaghetti and ring-fence it with tightly controlled class implementations. We then wrote an entirely new, simplified ruleset for research rewards and reengineered contracts (which includes beacon management, polls, and voting) using properly classed code. The fundamentals of Gridcoin with this release are now on a very sound and maintainable footing, and the developers believe the codebase as updated here will serve as the fundamental basis for Gridcoin's future roadmap.
We have been testing this for MONTHS on testnet in various stages. The v10 (legacy) compatibility code has been running on testnet continuously as it was developed to ensure compatibility with existing nodes. During the last few months, we have done two private testnet forks and then the full public testnet testing for v11 code (the new protocol which is what Fern implements). The developers have also been running non-staking "sentinel" nodes on mainnet with this code to verify that the consensus rules are problem-free for the legacy compatibility code on the broader mainnet. We believe this amount of testing is going to result in a smooth rollout.
Given the amount of changes in Fern, I am presenting TWO changelogs below. One is high level, which summarizes the most significant changes in the protocol. The second changelog is the detailed one in the usual format, and gives you an inkling of the size of this release.

Highlights

Protocol

Note that the protocol changes will not become active until we cross the hard-fork transition height to v11, which has been set at 2053000. Given current average block spacing, this should happen around October 4, about one month from now.
Note that to get all of the beacons in the network on the new protocol, we are requiring ALL beacons to be validated. A two week (14 day) grace period is provided by the code, starting at the time of the transition height, for people currently holding a beacon to validate the beacon and prevent it from expiring. That means that EVERY CRUNCHER must advertise and validate their beacon AFTER the v11 transition (around Oct 4th) and BEFORE October 18th (or more precisely, 14 days from the actual date of the v11 transition). If you do not advertise and validate your beacon by this time, your beacon will expire and you will stop earning research rewards until you advertise and validate a new beacon. This process has been made much easier by a brand new beacon "wizard" that helps manage beacon advertisements and renewals. Once a beacon has been validated and is a v11 protocol beacon, the normal 180 day expiration rules apply. Note, however, that the 180 day expiration on research rewards has been removed with the Fern update. This means that while your beacon might expire after 180 days, your earned research rewards will be retained and can be claimed by advertising a beacon with the same CPID and going through the validation process again. In other words, you do not lose any earned research rewards if you do not stake a block within 180 days and keep your beacon up-to-date.
The transition height is also when the team requirement will be relaxed for the network.

GUI

Besides the beacon wizard, there are a number of improvements to the GUI, including new UI transaction types (and icons) for staking the superblock, sidestake sends, beacon advertisement, voting, poll creation, and transactions with a message. The main screen has been revamped with a better summary section, and better status icons. Several changes under the hood have improved GUI performance. And finally, the diagnostics have been revamped.

Blockchain

The wallet sync speed has been DRASTICALLY improved. A decent machine with a good network connection should be able to sync the entire mainnet blockchain in less than 4 hours. A fast machine with a really fast network connection and a good SSD can do it in about 2.5 hours. One of our goals was to reduce or eliminate the reliance on snapshots for mainnet, and I think we have accomplished that goal with the new sync speed. We have also streamlined the in-memory structures for the blockchain which shaves some memory use.
There are so many goodies here it is hard to summarize them all.
I would like to thank all of the contributors to this release, but especially thank @cyrossignol, whose incredible contributions formed the backbone of this release. I would also like to pay special thanks to @barton2526, @caraka, and @Quezacoatl1, who tirelessly helped during the testing and polishing phase on testnet with testing and repeated builds for all architectures.
The developers are proud to present this release to the community and we believe this represents the starting point for a true renaissance for Gridcoin!

Summary Changelog

Accrual

Changed

Most significantly, nodes calculate research rewards directly from the magnitudes in EACH superblock between stakes instead of using a two- or three- point average based on a CPID's current magnitude and the magnitude for the CPID when it last staked. For those long-timers in the community, this has been referred to as "Superblock Windows," and was first done in proof-of-concept form by @denravonska.

Removed

Beacons

Added

Changed

Removed

Unaltered

As a reminder:

Superblocks

Added

Changed

Removed

Voting

Added

Changed

Removed

Detailed Changelog

[5.0.0.0] 2020-09-03, mandatory, "Fern"

Added

Changed

Removed

Fixed

submitted by jamescowens to gridcoin [link] [comments]

WaykiChain (WICC) Monthly Report (September 2020)

WaykiChain (WICC) Monthly Report (September 2020)

https://preview.redd.it/nnuhfz6q01t51.png?width=700&format=png&auto=webp&s=15ce35581f2ebad02af140180f5a8b1fe7931f00
Technology & Products
Public Chain Development
· WASM AMPL contract debugging (100%)
· Research on WASM zero-knowledge proof anonymous transfer (50%)
· WASM Sushi contract coding (100%)
· WASM RPC iOS asynchronous library commissioning (100%)
· Verification of the signature push public key algorithm and testing its codability (C++, go) through RPC (100%)
· The new lock-up airdrop contract function: lock-up users can claim the unlocked assets by entering RegID (100%)
· Porting ASWAP contract to public chain 3.0, adding platform fee processing (100%)
· Optimization of Yield Farming contract reward distribution (100%)
· Optimization of Yield Farming contract penalty distribution mechanism (100%)
· Yield Farming contract testing (100%)
· Deployment and initial configuration of WICC and WGRT yield farming contracts and Wayki-X contract completed (100%)
· Ownership of issuance and transfer rights of the bottom-level token ROG transferred to Wayki-X contract (100%)
· The initial generation of ROG completed. 10.08M ROG entered the WICC pool, 2.52M ROG entered the WGRT pool (100%)
· The first 189,000 ROG was minted in Wayki-X contract for rewards by inflation (12.6M × 1.5%) (100%)
· Transfer of 70,000 ROG to AEX for Ecosystem Yield Farming completed (100%)
· WASM developer documentation: added detailed WASM table (Simplified Chinese) (100%)
· WASM developer documentation: added call of multiple contracts and multisignature transactions in WASM contract (Simplified Chinese) (100%)
Application Development
· Yield Farming back end API (100%)
· Yield Farming front end page optimization (100%)
· Yield Farming front end localization (100%)
· Yield Farming pre-release initial API docking (100%)
· Yield Farming application testing (100%)
· Yield Farming application release (100%)
· xUSD & ROG added to Instant in WaykiTimes Android (100%)
· Memory leak issue fixed in Instant in WaykiTimes (100%)
· Data loading error when swiping in Discover fixed in WaykiTimes (100%)
· Data display optimized in Getting Started in WaykiTimes
· UI debugging of several pages in WaykiTimes (100%)
· WaykiTimes 3.0.4 released (100%)
· WaykiTimes Help Center released (100%)
· WaykiTimes Getting Started released (100%)
· WaykiTimes remember password function released (100%)
· WaykiTimes iOS App Store version tested (100%)
· Google crash analysis and testing added to WaykiTimes Android (100%)
· Solved the data loading issue when swiping in Wayki-X Synths (100%)
· Wayki-X price feed delay fixed (100%)
· Amount issue in the plug-in wallet fixed (100%)
· Display error of release contract type of universal transactions fixed on the blockchain explorer (100%)
· WASM contract display specifications for the blockchain explorer completed (100%)
· Development of the Coinbase integration project (wicc-rosetta-api) (85%)
Plan for October
Public Chain Development
· Research on WASM zero-knowledge proof anonymous transfer
· Correction of ASWAP contract proof of liquidity token generation rules
· ASWAP contract testing
· Docking of ASWAP contract with third parties
· Continuous updating of coind RPC interface documentation
Application Development
· Trade — transaction details HTML5 page to native page transfer in WaykiTimes
· Development of the Coinbase integration project (wicc-rosetta-api)
Market
International Market
· On September 4, Russian volunteers opened the second WaykiChain Russian group in Telegram: https://t.me/waykichainrussian.
· On September 6, WaykiChain opened the official community in Discord: https://discord.gg/XyAkqa.
· On September 6, WaykiChain CTO Richard Chen was invited to the Blockchain + Innovative Service and Industrial Application Conference and the China Chamber of International Commerce Blockchain Innovation Service Industry Committee Establishment Conference as a member of the expert group.
· On September 11, the famous US blockchain TV program Exploring the Block tweeted about WaykiChain, showing it is optimistic about the future development of the integrated DeFi ecology of WaykiChain.
· On September 11, the famous business platform Yahoo Finance released WaykiChain project information and announced that WaykiChain CEO Gordon Gao gives an interview to NASDAQ MarketSite’s Jane King on September 12.
· At 7:00 PM EDT on September 12, world’s largest financial channel Bloomberg TV reported that WaykiChain CEO Gordon Gao was interviewed by Jane King of NASDAQ MarketSite. The interview aired on Fox Business Network at 10:30 PM EDT on September 14.
· On September 12, cryptocurrency Twitter account Crypto Catalog tweeted about WaykiChain, showing it is optimistic about the future development of the integrated DeFi ecology of WaykiChain.
· On September 13, DeFi List added WaykiChain governance token WGRT.
· On September 13, WaykiChain reached market cooperation with the Indian blockchain influencer Gmadvice who started to serve as WaykiChain community manager in India.
· On September 16, WaykiChain released “WaykiChain Launches Phoenix Yield Farming with WICC/WGRT Dual-pool for ROG Genesis Issuance” on Twitter. Up to September 21, the news hit 2,400+ retweets.
· On September 17, the cryptocurrency influencer DeFi List retweeted “WaykiChain Launches Phoenix Yield Farming with WICC/WGRT Dual-pool for ROG Genesis Issuance”.
· On September 18, WaykiChain reached strategic market cooperation with the Korean crypto influencer Pantera who will help WaykiChain establish a broad and strong consensus in Korea.
· On September 19, “WaykiChain Dual-pool ROG Yield Farming Korean Group” community established.
· On September 20, the influencer Crypto Wendy retweeted “WaykiChain Launches Phoenix Yield Farming with WICC/WGRT Dual-pool for ROG Genesis Issuance”.
· On September 21, 130+ Korean media outlets published “WaykiChain Launches Phoenix Yield Farming with WICC & WGRT Dual-pool for ROG Genesis Issuance”.
· On September 23, WaykiChain co-founder and CEO Gordon Gao was invited to an AMA session with ICO Pantera Group, Korea’s top Telegram group (stats by u/combot), where he shared his insights into DeFi with 4,000+ Korean users and introduced WaykiChain’s ROG Genesis Yield Farming.
· On September 24, WaykiChain tweeted “ROG Genesis Yield Farming FAQ” and “Leave your question/problem toward WaykiTimes/Wayki-X/ROG Genesis Yield Farming in the Google forms below to share 800 WICC Giveaway!”, the number of engagements is 1,500+.
· On September 24, WaykiChain global partner Vincent Lionheart was invited to an AMA session to D’va Community.
· On September 24, The Business Telegraph, Bitcoin Garden, and other media published “WaykiChain Launches Phoenix Yield Farming with WICC & WGRT Dual-pool”.
· On September 24, WaykiChain tweeted the ROG Genesis Yield Farming Countdown. The news hit 1,000+ retweets.
· On September 25, ROG Genesis Yield Farming news was the day’s hit in Korea with 5,000+ views on Korean cryptocurrency forums.
National Market
· On September 1, CoinTiger listed WaykiChain governance token WGRT and opened the WGRT/USDT pair. WGRT net buy & hold competition started and the CoinTiger community joined a series of WGRT-themed challenges.
· On September 1, WaykiChain governance token WGRT successfully mapped to Ethereum and ERC-20 WGRT was created. The world’s largest DEX Uniswap officially supported it and listed the WGRT/USDT pair.
· On September 2, WaykiChain Strategic Analyst Jing Tao gave the speech “WGRT Dragon, Fly, Tiger, and Leap: Community Governance Upstart” to the MXC community and distributed 3 gold bars to the event participants.
· On September 7, WaykiChain Strategy Analyst Jing Tao attended [This Is Coin Coffee] live DeFi contest co-sponsored by Coinka, fogwu.com, and tuoniaox.com. WEDEX founder & CEO, Loopring co-founder Chen Xiaoliang and ChainNews Research Director Pan Zhixiong joined the event.
· On September 9, Gate.io selected WaykiChain governance token WGRT for the Listing Vote. Each voter had a chance to share an airdrop of 420,875.43 WGRT. WGRT passed the voting with 53,293,775 votes and was successfully listed on Gate.io.
· On September 10, WGRT/USDT trading pair and WGRT withdrawals opened on Gate.io.
· On September 10, WaykiChain released WaykiChain Governance Token WGRT Information and Addresses. The team announced that before July 1, 2021, WGRT circulating supply will be strictly controlled at 10% of the total supply, or 2.1 billion.
· On September 9 to 11, WaykiChain was invited to IoT World China & 5G China along with 400+ exhibitors including Huawei, Baidu, and Tencent. WaykiChain demonstrated the integrated public chain DeFi ecosystem that will help China’s digital construction.
· On September 11, WaykiChain Strategy Analyst Jing Tao was invited to the Bepal community and shared the speech “WaykiChain Governance Token WGRT: Accumulation and Breakout”. WaykiChain airdropped 3,000 WGRT and cash red envelopes to the Bepal community members.
· On September 12, WaykiChain Technology & Development Manager Yuanhang Xiao and Strategy Analyst Jing Tao introduced [New WaykiChain DeFi Product: Decentralized Synthetic Asset Issuance Protocol Wayki-X] in the official WaykiChain yizhibo account. During the live broadcast, WaykiChain distributed pure gold bars and branded gifts to lucky users.
· On September 13, WaykiChain co-founder & CEO Gordon Gao and Overseas Director Qiyuan Mei shared the speech “WaykiChain Opens the Era of Integrated DeFi Public Chains” in the Gate.io live broadcast room. Gate.io CPO Jiuer was the broadcast host. The guests explained WaykiChain’s DeFi strategy and revealed the launch of Yield Farming.
· On September 15, WaykiChain CEO Gordon Gao and BTC38 co-founder Tianwei Huang held the live stream titled “Eight Questions to Explain DeFi Trends and Opportunities” in yizhibo. The hosts analyzed the status and trends of DeFi, discussed DeFi deployment by public chains and exchanges, and new opportunities in synthetic asset trading. WaykiChain distributed pure gold bars and branded gifts to lucky viewers of the stream.
· On September 16, WaykiChain Strategy Analyst Jing Tao shared the speech titled “WaykiChain’s Integrated DeFi Ecosystem Layout” as the guest of btcmoney.cc.
· On September 18, Bying community invited WaykiChain Strategy Analyst Jing Tao to share the speech “New DeFi Opportunity: Phoenix Yield Farming”. WaykiChain held a WICC airdrop for Bying community members.
· On September 18, WaykiChain published the article “No Pre-mining, ICO, or Reserve! WaykiChain Launches Dual-pool Phoenix Yield Farming”.
· On September 19, WaykiChain published the article “Chapter 1. The Financial Innovation of Blockchain Reformation. The Origin, Logic, and Value of WaykiChain ROG” introducing the background of ROG, the operation mechanism of the decentralized synthetic asset system Wayki-X, and the value foundation of ROG in detail.
· On September 23, “No Pre-mining, ICO, or Reserve! WaykiChain ROG Genesis Farming and Early Release Guide” was released across Chinese media.
· On September 24, WaykiChain CEO Gordon Gao, CTO Richard Chen, and CPO Xi Zhang held a joint live stream on yizhibo explaining the future planning of WaykiChain decentralized synthetic asset issuance protocol Wayki-X, ROG, and WaykiChain DeFi in terms of business model, technology, and products. WaykiChain distributed 1 pure gold bar and 6 branded gifts to the lucky stream viewers.
· On September 24, Gate.io and WaykiChain launched the WGRT Investment Competition. The prizes are a BMW G 310 R motorcycle, a 13” MacBook Pro, a 10.2” iPad, 17 pure gold bars and 99,000 WGRT.
· On September 25, various Chinese media released “Wayki-X 101: WaykiChain Decentralized Synthetic Asset Protocol” introducing the functions and mechanism of the decentralized synthetic asset issuance protocol Wayki-X and the value of its token ROG in detail.
· On September 25, WaykiChain launched the “Looking for the Genesis Prophet” community event. The winners received 10 branded gifts.
· On September 25, WaykiChain ROG Genesis Yield Farming launched. WICC and WGRT pool quotas (5 million and 25 million, respectively) were full within just one hour.
· On September 25, WaykiChain reached ecosystem partnership with AEX. AEX became the first platform to join ROG Ecosystem Yield Farming.
· On September 25, WaykiChain partnered with Bying wallet. ROG Genesis Yield Farming is available in Bying wallet.
· On September 26, ROG, the main token of WaykiChain’s decentralized synthetic asset issuance protocol Wayki-X, was listed on AEX. ROG/USDT trading pair is available.
· On September 26, WaykiChain CEO Gordon Gao gave lectures “DeFi Financial Principles and Commercial Applications” and “DeFi Industry Panoramic Scan” at The First Offline Practical Training Camp of Hash Power University, Shanghai Station. Participants included Ontology founder Jun Li, Chainlink Labs — China Head Philip Fei, Digital Renaissance Foundation Managing Director Cao Yin, and Waterdrip Capital founding partner Zheng Yushan.
· On September 28, WaykiChain co-founder and CEO Gordon Gao was a guest at Hash Power Knowledge Base Private Meeting, Shenzhen Station where he shared the speech titled “Feasible Ways of DeFi Application Popularization”. Other guests included Ontology founder Jun Li, DeBank founder and CEO Tang Hongbo, and Huobi Research Chief Technical Researcher Tianyuan Ma.
submitted by Waykichain to WICCProject [link] [comments]

API key for connection to BTC full node

GetBlock is a service that provides a fast and easy connection to a continuously growing list of over 20 cryptocurrencies’ nodes, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), among others. We support such tools like JSON-RPC, REST, and WebSockets, which facilitates direct synchronization with the blockchain.
In order to build a blockchain-based application, an individual or a company usually has to deploy and run several blockchain nodes. Now you can immediately connect your app to a blockchain, as GetBlock relieves you from running a node yourself.
In order to get started with GetBlock fill in the form on the website and get your free API key.
submitted by getblockio to btc [link] [comments]

Fast and Easy Connection to Blockchain Nodes

GetBlock is a service that provides a fast and easy connection to a continuously growing list of over 30 cryptocurrencies’ nodes, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), among others. We support such tools like JSON-RPC, REST, and WebSockets, which facilitates direct synchronization with the blockchain.
In order to build a blockchain-based application, an individual or a company usually has to deploy and run several blockchain nodes. Now you can immediately connect your app to a blockchain, as GetBlock relieves you from running a node yourself.
In order to get started with GetBlock fill in the form on the website and get your free API key.
submitted by getblockio to decentralization [link] [comments]

Free API key to Access the Blockchain Nodes

GetBlock is a service that provides a fast and easy connection to a continuously growing list of over 20 cryptocurrencies’ nodes, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), among others. We support such tools like JSON-RPC, REST, and WebSockets, which facilitates direct synchronization with the blockchain.
In order to build a blockchain-based application, an individual or a company usually has to deploy and run several blockchain nodes. Now you can immediately connect your app to a blockchain, as GetBlock relieves you from running a node yourself.
In order to get started with GetBlock fill in the form on the website and get your free API key.
submitted by getblockio to api [link] [comments]

Full node for $ETH buidlers

GetBlock is a service that provides a fast and easy connection to a continuously growing list of over 20 cryptocurrencies’ nodes, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), among others. We support such tools like JSON-RPC, REST, and WebSockets, which facilitates direct synchronization with the blockchain.
In order to build a blockchain-based application, an individual or a company usually has to deploy and run several blockchain nodes. Now you can immediately connect your app to a blockchain, as GetBlock relieves you from running a node yourself.
In order to get started with GetBlock fill in the form on the website and get your free API key.
submitted by getblockio to eth [link] [comments]

Free full node for ETH buidlers

GetBlock is a service that provides a fast and easy connection to a continuously growing list of over 20 cryptocurrencies’ nodes, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), among others. We support such tools like JSON-RPC, REST, and WebSockets, which facilitates direct synchronization with the blockchain.
In order to build a blockchain-based application, an individual or a company usually has to deploy and run several blockchain nodes. Now you can immediately connect your app to a blockchain, as GetBlock relieves you from running a node yourself.
In order to get started with GetBlock fill in the form on the website and get your free API key.
submitted by getblockio to ethdev [link] [comments]

Access to blockchain nodes of the most popular cryptocurrencies

GetBlock is a service that provides a fast and easy connection to a continuously growing list of over 30 cryptocurrencies’ nodes, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), among others. We support such tools like JSON-RPC, REST, and WebSockets, which facilitates direct synchronization with the blockchain.
In order to build a blockchain-based application, an individual or a company usually has to deploy and run several blockchain nodes. Now you can immediately connect your app to a blockchain, as GetBlock relieves you from running a node yourself.
In order to get started with GetBlock fill in the form on the website and get your free API key.
submitted by getblockio to CryptoCurrencies [link] [comments]

Full node for $ETH buidlers

GetBlock is a service that provides a fast and easy connection to a continuously growing list of over 20 cryptocurrencies’ nodes, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), among others. We support such tools like JSON-RPC, REST, and WebSockets, which facilitates direct synchronization with the blockchain.
In order to build a blockchain-based application, an individual or a company usually has to deploy and run several blockchain nodes. Now you can immediately connect your app to a blockchain, as GetBlock relieves you from running a node yourself.
In order to get started with GetBlock fill in the form on the website and get your free API key.
submitted by getblockio to Ether [link] [comments]

Full node for $ETH buidlers

GetBlock is a service that provides a fast and easy connection to a continuously growing list of over 20 cryptocurrencies’ nodes, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), among others. We support such tools like JSON-RPC, REST, and WebSockets, which facilitates direct synchronization with the blockchain.
In order to build a blockchain-based application, an individual or a company usually has to deploy and run several blockchain nodes. Now you can immediately connect your app to a blockchain, as GetBlock relieves you from running a node yourself.
In order to get started with GetBlock fill in the form on the website and get your free API key.
submitted by getblockio to ethtrader [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]

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]

Reddcoin (RDD) 02/20 Progress Report - Core Wallet v3.1 Evolution & PoSV v2 - Commits & More Commits to v3.1! (Bitcoin Core 0.10, MacOS Catalina, QT Enhanced Speed and Security and more!)

Reddcoin (RDD) Core Dev Team Informal Progress Report, Feb 2020 - As any blockchain or software expert will confirm, the hardest part of making successful progress in blockchain and crypto is invisible to most users. As developers, the Reddcoin Core team relies on internal experts like John Nash, contributors offering their own code improvements to our repos (which we would love to see more of!) and especially upstream commits from experts working on open source projects like Bitcoin itself. We'd like tothank each and everyone who's hard work has contributed to this progress.
As part of Reddcoin's evolution, and in order to include required security fixes, speed improvements that are long overdue, the team has up to this point incorporated the following code commits since our last v3.0.1 public release. In attempting to solve the relatively minor font display issue with MacOS Catalina, we uncovered a complicated interweaving of updates between Reddcoin Core, QT software, MacOS SDK, Bitcoin Core and related libraries and dependencies that mandated we take a holistic approach to both solve the Catalina display problem, but in doing so, prepare a more streamlined overall build and test system, allowing the team to roll out more frequent and more secure updates in the future. And also to include some badly needed fixes in the current version of Core, which we have tentatively labeled Reddcoin Core Wallet v3.1.
Note: As indicated below, v3.1 is NOT YET AVAILABLE FOR DOWNLOAD BY PUBLIC. We wil advise when it is.
The new v3.1 version should be ready for internal QA and build testing by the end of this week, with luck, and will be turned over to the public shortly thereafter once testing has proven no unexpected issues have been introduced. We know the delay has been a bit extended for our ReddHead MacOS Catalina stakers, and we hope to have them all aboard soon. We have moved with all possible speed while attempting to incorproate all the required work, testing, and ensuring security and safety for our ReddHeads.
Which leads us to: PoSV v2 activation and the supermajority on Mainnet at the time of this writing has reached 5625/9000 blocks or 62.5%. We have progressed quite well and without any reported user issues since release, but we need all of the community to participate! This activation, much like the funding mechanisms currently being debated by BCH and others, and employed by DASH, will mean not only a catalyst for Reddcoin but ensure it's future by providing funding for the dev team. As a personal plea from the team, please help us support the PoSV v2 activation by staking your RDD, no matter how large or small your amount of stake.
Every block and every RDD counts, and if you don't know how, we'll teach you! Live chat is fun as well as providing tech support you can trust from devs and community ReddHead members. Join us today in staking and online and collect some RDD "rain" from users and devs alike!
If you're holding Reddcoin and not staking, or you haven't upgraded your v2.x wallet to v3.0.1 (current release), we need you to help achieve consensus and activate PoSV v2! For details, see the pinned message here or our website or medium channel. Upgrade is simple and takes moments; if you're nervous or unsure, we're here to help live in Telegram or Discord, as well as other chat programs. See our website for links.
Look for more updates shortly as our long-anticipated Reddcoin Payment Gateway and Merchant Services API come online with point-of-sale support, as we announce the cross-crypto-project Aussie firefighter fundraiser program, as well as a comprehensive update to our development roadmap and more.
Work has restarted on ReddID and multiple initiatives are underway to begin educating and sharing information about ReddID, what it is, and how to use it, as we approach a releasable ReddID product. We enthusiastically encourage anyone interested in working to bring these efforts to life, whether writers, UX/UI experts, big data analysts, graphic artists, coders, front-end, back-end, AI, DevOps, the Reddcoin Core dev team is growing, and there's more opportunity and work than ever!
Bring your talents to a community and dev team that truly appreciates it, and share the Reddcoin Love!
And now, lots of commits. As v3.1 is not yet quite ready for public release, these commits have not been pushed publicly, but in the interests of sharing progress transparently, and including our ReddHead community in the process, see below for mind-numbing technical detail of work accomplished.
e5c143404 - - 2014-08-07 - Ross Nicoll - Changed LevelDB cursors to use scoped pointers to ensure destruction when going out of scope. *99a7dba2e - - 2014-08-15 - Cory Fields - tests: fix test-runner for osx. Closes ##4708 *8c667f1be - - 2014-08-15 - Cory Fields - build: add funcs.mk to the list of meta-depends *bcc1b2b2f - - 2014-08-15 - Cory Fields - depends: fix shasum on osx < 10.9 *54dac77d1 - - 2014-08-18 - Cory Fields - build: add option for reducing exports (v2) *6fb9611c0 - - 2014-08-16 - randy-waterhouse - build : fix CPPFLAGS for libbitcoin_cli *9958cc923 - - 2014-08-16 - randy-waterhouse - build: Add --with-utils (bitcoin-cli and bitcoin-tx, default=yes). Help string consistency tweaks. Target sanity check fix. *342aa98ea - - 2014-08-07 - Cory Fields - build: fix automake warnings about the use of INCLUDES *46db8ad51 - - 2020-02-18 - John Nash - build: add build.h to the correct target *a24de1e4c - - 2014-11-26 - Pavel Janík - Use complete path to include bitcoin-config.h. *fd8f506e5 - - 2014-08-04 - Wladimir J. van der Laan - qt: Demote ReportInvalidCertificate message to qDebug *f12aaf3b1 - - 2020-02-17 - John Nash - build: QT5 compiled with fPIC require fPIC to be enabled, fPIE is not enough *7a991b37e - - 2014-08-12 - Wladimir J. van der Laan - build: check for sys/prctl.h in the proper way *2cfa63a48 - - 2014-08-11 - Wladimir J. van der Laan - build: Add mention of --disable-wallet to bdb48 error messages *9aa580f04 - - 2014-07-23 - Cory Fields - depends: add shared dependency builder *8853d4645 - - 2014-08-08 - Philip Kaufmann - [Qt] move SubstituteFonts() above ToolTipToRichTextFilter *0c98e21db - - 2014-08-02 - Ross Nicoll - URLs containing a / after the address no longer cause parsing errors. *7baa77731 - - 2014-08-07 - ntrgn - Fixes ignored qt 4.8 codecs path on windows when configuring with --with-qt-libdir *2a3df4617 - - 2014-08-06 - Cory Fields - qt: fix unicode character display on osx when building with 10.7 sdk *71a36303d - - 2014-08-04 - Cory Fields - build: fix race in 'make deploy' for windows *077295498 - - 2014-08-04 - Cory Fields - build: Fix 'make deploy' when binaries haven't been built yet *ffdcc4d7d - - 2014-08-04 - Cory Fields - build: hook up qt translations for static osx packaging *25a7e9c90 - - 2014-08-04 - Cory Fields - build: add --with-qt-translationdir to configure for use with static qt *11cfcef37 - - 2014-08-04 - Cory Fields - build: teach macdeploy the -translations-dir argument, for use with static qt *4c4ae35b1 - - 2014-07-23 - Cory Fields - build: Find the proper xcb/pcre dependencies *942e77dd2 - - 2014-08-06 - Cory Fields - build: silence mingw fpic warning spew *e73e2b834 - - 2014-06-27 - Huang Le - Use async name resolving to improve net thread responsiveness *c88e76e8e - - 2014-07-23 - Cory Fields - build: don't let libtool insert rpath into binaries *18e14e11c - - 2014-08-05 - ntrgn - build: Fix windows configure when using --with-qt-libdir *bb92d65c4 - - 2014-07-31 - Cory Fields - test: don't let the port number exceed the legal range *62b95290a - - 2014-06-18 - Cory Fields - test: redirect comparison tool output to stdout *cefe447e9 - - 2014-07-22 - Cory Fields - gitian: remove unneeded option after last commit *9347402ca - - 2014-07-21 - Cory Fields - build: fix broken boost chrono check on some platforms *c9ed039cf - - 2014-06-03 - Cory Fields - build: fix whitespace in pkg-config variable *3bcc5ad37 - - 2014-06-03 - Cory Fields - build: allow linux and osx to build against static qt5 *01a44ba90 - - 2014-07-17 - Cory Fields - build: silence false errors during make clean *d1fbf7ba2 - - 2014-07-08 - Cory Fields - build: fix win32 static linking after libtool merge *005ae2fa4 - - 2014-07-08 - Cory Fields - build: re-add AM_LDFLAGS where it's overridden *37043076d - - 2014-07-02 - Wladimir J. van der Laan - Fix the Qt5 build after d95ba75 *f3b4bbf40 - - 2014-07-01 - Wladimir J. van der Laan - qt: Change serious messages from qDebug to qWarning *f4706f753 - - 2014-07-01 - Wladimir J. van der Laan - qt: Log messages with type>QtDebugMsg as non-debug *98e85fa1f - - 2014-06-06 - Pieter Wuille - libsecp256k1 integration *5f1f2e226 - - 2020-02-17 - John Nash - Merge branch 'switch_verification_code' into Build *1f30416c9 - - 2014-02-07 - Pieter Wuille - Also switch the (unused) verification code to low-s instead of even-s. *1c093d55e - - 2014-06-06 - Cory Fields - secp256k1: Add build-side changes for libsecp256k1 *7f3114484 - - 2014-06-06 - Cory Fields - secp256k1: add libtool as a dependency *2531f9299 - - 2020-02-17 - John Nash - Move network-time related functions to timedata.cpp/h *d003e4c57 - - 2020-02-16 - John Nash - build: fix build weirdness after 54372482. *7035f5034 - - 2020-02-16 - John Nash - Add ::OUTPUT_SIZE *2a864c4d8 - - 2014-06-09 - Cory Fields - crypto: create a separate lib for crypto functions *03a4e4c70 - - 2014-06-09 - Cory Fields - crypto: explicitly check for byte read/write functions *a78462a2a - - 2014-06-09 - Cory Fields - build: move bitcoin-config.h to its own directory *a885721c4 - - 2014-05-31 - Pieter Wuille - Extend and move all crypto tests to crypto_tests.cpp *5f308f528 - - 2014-05-03 - Pieter Wuille - Move {Read,Write}{LE,BE}{32,64} to common.h and use builtins if possible *0161cc426 - - 2014-05-01 - Pieter Wuille - Add built-in RIPEMD-160 implementation *deefc27c0 - - 2014-04-28 - Pieter Wuille - Move crypto implementations to src/crypto/ *d6a12182b - - 2014-04-28 - Pieter Wuille - Add built-in SHA-1 implementation. *c3c4f9f2e - - 2014-04-27 - Pieter Wuille - Switch miner.cpp to use sha2 instead of OpenSSL. *b6ed6def9 - - 2014-04-28 - Pieter Wuille - Remove getwork() RPC call *0a09c1c60 - - 2014-04-26 - Pieter Wuille - Switch script.cpp and hash.cpp to use sha2.cpp instead of OpenSSL. *8ed091692 - - 2014-04-20 - Pieter Wuille - Add a built-in SHA256/SHA512 implementation. *0c4c99b3f - - 2014-06-21 - Philip Kaufmann - small cleanup in src/compat .h and .cpp *ab1369745 - - 2014-06-13 - Cory Fields - sanity: hook up sanity checks *f598c67e0 - - 2014-06-13 - Cory Fields - sanity: add libc/stdlib sanity checks *b241b3e13 - - 2014-06-13 - Cory Fields - sanity: autoconf check for sys/select.h *cad980a4f - - 2019-07-03 - John Nash - build: Add a top-level forwarding target for src/ objects *f4533ee1c - - 2019-07-03 - John Nash - build: qt: split locale resources. Fixes non-deterministic distcheck *4a0e46e76 - - 2019-06-29 - John Nash - build: fix version dependency *2f61699d9 - - 2019-06-29 - John Nash - build: quit abusing AMCPPFLAGS *99b60ba49 - - 2019-06-29 - John Nash - build: avoid the use of top and abs_ dir paths *c8f673d5d - - 2019-06-29 - John Nash - build: Tidy up file generation output *5318bce57 - - 2019-06-29 - John Nash - build: nuke Makefile.include from orbit *672a25349 - - 2019-06-29 - John Nash - build: add stub makefiles for easier subdir builds *562b7c5a6 - - 2020-02-08 - John Nash - build: delete old Makefile.am's *066120079 - - 2020-02-08 - John Nash - build: Switch to non-recursive make
Whew! No wonder it's taken the dev team a while! :)
TL;DR: Trying to fix MacOS Catalina font display led to requiring all kinds of work to migrate and evolve the Reddcoin Core software with Apple, Bitcoin and QT components. Lots of work done, v3.1 public release soon. Also other exciting things and ReddID back under active dev effort.
submitted by TechAdept to reddCoin [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]

ETHEREUM FRONTEND JAVASCRIPT APIS: WHAT YOU NEED TO KNOW

ETHEREUM FRONTEND JAVASCRIPT APIS: WHAT YOU NEED TO KNOW

https://preview.redd.it/9djdo90nx9051.jpg?width=2400&format=pjpg&auto=webp&s=54ca700da20bac0692ed294a31e75cfefb96f671
Blockchain has emerged as a popular technology, and if you are planning to make a career in this field, then there are various certification programs. When we talk about Blockchain, then it becomes important to mention about Ethereum. It is a cryptocurrency and an open-source platform as well. There has been some great development in this field, and those who are planning to learn about Ethereum must go for a certified Ethereum course.
Blockchain developers who are developing apps on Ethereum must know about the different frontend javascript which can simplify their task. In this blog, we will be highlight three such popular javascript APIs.
Ethereum Overview:
Ethereum emerged after Bitcoin and has now become a popular Blockchain platform. It is a cryptocurrency as well. It is an open-source software platform. Ethereum offers a flexible platform to the developer so that they can develop decentralized apps with ease.
Although scalability is a bit of an issue with Ethereum, in the current scenario, it is one of the best platforms for decentralized application development.
Looking at the broader spectrum and use of Blockchain, it has become a great career opportunity for many. Hence, option for certified Blockchain Developer is the right way to give your career the right boost.
What is API?
API is a set of the protocol which is used of building and integrating the applications across different platforms. APIs eventually simplifies app development and enables seamless interaction of your products and services with the user.
Popular frontend Javascript APIs:
Web3.js- This is a collection of libraries which empowers you to connect with remote Ethereum node. It is achieved by using HTTP or IPC connection. This is used for the following :

  1. Send ether from one account to another
  2. Interact with smart contracts
  3. Retrieve user account
It interacts with Ethereum Blockchain with JSON RPC protocol. A copy of all the data and code is present on the Blockchain. The API requests an individual Ethereum node with JSON RPC to read and write data to the network.
Ethers.js
Another frontend javascript is Ethere.js, which is used by most of the decentralized application developers owing to its features and functionalities. It has the following main features:

  1. It is open source
  2. It is completely safe as it keeps private keys restricted to the clients
  3. You can import and export using JSON wallets which again adds to the security feature
  4. Import and export BIP 39 mnemonic phrases
  5. You can connect to Ethereum nodes via JSON-RPC, MetaMask, INFURA, or Etherscan.
  6. It is completely TypeScript ready
  7. It offers complete functionality for all Ethereym needs
  8. Extensive documentation
  9. It has a huge collection of test cases
  10. It has an MIT Licence.
If you are looking for another API to develop javascript with Ethereum, then you must consider Ether.js. It is loaded with features that any Blockchain developer would require. The library is designed in such a way that it matches the need of the client. With the use of ether.js, it becomes easier to write javascript-based wallets.
Light.js
The third entrant in our list is light.js. It provides high-level tools which are used for developing efficient Dapps on the light client. This is also a great alternative to web3.js. It works with remote nodes and makes it easy for a developer to build decentralized applications with ease.
Here it becomes important to mention that light.js chooses the best pattern which works with light clients, it listens to headers and makes API calls on a new header an ensures that network calls are not extreme.
The end objective is to put up a high-level library such that the decentralized app developers can make use of this and create apps.
Besides, these there are other APIs like Web3-wrapper can also be used by blockchain developer. These APIs aim to simplify the task of the developer so that they can create apps which work seamlessly.
Final Thoughts
If you are working on a decentralized application developed, then you would come across either of these apps or will be using one of them. In case you are new to this field and are looking for gaining comprehensive knowledge in this field, then you must go for a Certified Ethereum Expert online training program by Blockchain Council. This exhaustive program will help you learn about Ethereum, APIs and allied concepts and at the same time, learn how to use them. In case you want to learn how to use smart contracts on Ethereum based applications, then you must opt for Certified Solidity Developer coursesby Blockchain Council. Connect with us today to explore more about Ethereum.
submitted by Blockchain_org to BlockchainStartups [link] [comments]

Groestlcoin 6th Anniversary Release

Introduction

Dear Groestlers, it goes without saying that 2020 has been a difficult time for millions of people worldwide. The groestlcoin team would like to take this opportunity to wish everyone our best to everyone coping with the direct and indirect effects of COVID-19. Let it bring out the best in us all and show that collectively, we can conquer anything.
The centralised banks and our national governments are facing unprecedented times with interest rates worldwide dropping to record lows in places. Rest assured that this can only strengthen the fundamentals of all decentralised cryptocurrencies and the vision that was seeded with Satoshi's Bitcoin whitepaper over 10 years ago. Despite everything that has been thrown at us this year, the show must go on and the team will still progress and advance to continue the momentum that we have developed over the past 6 years.
In addition to this, we'd like to remind you all that this is Groestlcoin's 6th Birthday release! In terms of price there have been some crazy highs and lows over the years (with highs of around $2.60 and lows of $0.000077!), but in terms of value– Groestlcoin just keeps getting more valuable! In these uncertain times, one thing remains clear – Groestlcoin will keep going and keep innovating regardless. On with what has been worked on and completed over the past few months.

UPDATED - Groestlcoin Core 2.18.2

This is a major release of Groestlcoin Core with many protocol level improvements and code optimizations, featuring the technical equivalent of Bitcoin v0.18.2 but with Groestlcoin-specific patches. On a general level, most of what is new is a new 'Groestlcoin-wallet' tool which is now distributed alongside Groestlcoin Core's other executables.
NOTE: The 'Account' API has been removed from this version which was typically used in some tip bots. Please ensure you check the release notes from 2.17.2 for details on replacing this functionality.

How to Upgrade?

Windows
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer.
OSX
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), run the dmg and drag Groestlcoin Core to Applications.
Ubuntu
http://groestlcoin.org/forum/index.php?topic=441.0

Other Linux

http://groestlcoin.org/forum/index.php?topic=97.0

Download

Download the Windows Installer (64 bit) here
Download the Windows Installer (32 bit) here
Download the Windows binaries (64 bit) here
Download the Windows binaries (32 bit) here
Download the OSX Installer here
Download the OSX binaries here
Download the Linux binaries (64 bit) here
Download the Linux binaries (32 bit) here
Download the ARM Linux binaries (64 bit) here
Download the ARM Linux binaries (32 bit) here

Source

ALL NEW - Groestlcoin Moonshine iOS/Android Wallet

Built with React Native, Moonshine utilizes Electrum-GRS's JSON-RPC methods to interact with the Groestlcoin network.
GRS Moonshine's intended use is as a hot wallet. Meaning, your keys are only as safe as the device you install this wallet on. As with any hot wallet, please ensure that you keep only a small, responsible amount of Groestlcoin on it at any given time.

Features

Download

iOS
Android

Source

ALL NEW! – HODL GRS Android Wallet

HODL GRS connects directly to the Groestlcoin network using SPV mode and doesn't rely on servers that can be hacked or disabled.
HODL GRS utilizes AES hardware encryption, app sandboxing, and the latest security features to protect users from malware, browser security holes, and even physical theft. Private keys are stored only in the secure enclave of the user's phone, inaccessible to anyone other than the user.
Simplicity and ease-of-use is the core design principle of HODL GRS. A simple recovery phrase (which we call a Backup Recovery Key) is all that is needed to restore the user's wallet if they ever lose or replace their device. HODL GRS is deterministic, which means the user's balance and transaction history can be recovered just from the backup recovery key.

Features

Download

Main Release (Main Net)
Testnet Release

Source

ALL NEW! – GroestlcoinSeed Savior

Groestlcoin Seed Savior is a tool for recovering BIP39 seed phrases.
This tool is meant to help users with recovering a slightly incorrect Groestlcoin mnemonic phrase (AKA backup or seed). You can enter an existing BIP39 mnemonic and get derived addresses in various formats.
To find out if one of the suggested addresses is the right one, you can click on the suggested address to check the address' transaction history on a block explorer.

Features

Live Version (Not Recommended)

https://www.groestlcoin.org/recovery/

Download

https://github.com/Groestlcoin/mnemonic-recovery/archive/master.zip

Source

ALL NEW! – Vanity Search Vanity Address Generator

NOTE: NVidia GPU or any CPU only. AMD graphics cards will not work with this address generator.
VanitySearch is a command-line Segwit-capable vanity Groestlcoin address generator. Add unique flair when you tell people to send Groestlcoin. Alternatively, VanitySearch can be used to generate random addresses offline.
If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then VanitySearch is the right choice for you to create a more personalized address.
VanitySearch is a groestlcoin address prefix finder. If you want to generate safe private keys, use the -s option to enter your passphrase which will be used for generating a base key as for BIP38 standard (VanitySearch.exe -s "My PassPhrase" FXPref). You can also use VanitySearch.exe -ps "My PassPhrase" which will add a crypto secure seed to your passphrase.
VanitySearch may not compute a good grid size for your GPU, so try different values using -g option in order to get the best performances. If you want to use GPUs and CPUs together, you may have best performances by keeping one CPU core for handling GPU(s)/CPU exchanges (use -t option to set the number of CPU threads).

Features

Usage

https://github.com/Groestlcoin/VanitySearch#usage

Download

Source

ALL NEW! – Groestlcoin EasyVanity 2020

Groestlcoin EasyVanity 2020 is a windows app built from the ground-up and makes it easier than ever before to create your very own bespoke bech32 address(es) when whilst not connected to the internet.
If you're tired of the random, cryptic bech32 addresses generated by regular Groestlcoin clients, then Groestlcoin EasyVanity2020 is the right choice for you to create a more personalised bech32 address. This 2020 version uses the new VanitySearch to generate not only legacy addresses (F prefix) but also Bech32 addresses (grs1 prefix).

Features

Download

Source

Remastered! – Groestlcoin WPF Desktop Wallet (v2.19.0.18)

Groestlcoin WPF is an alternative full node client with optional lightweight 'thin-client' mode based on WPF. Windows Presentation Foundation (WPF) is one of Microsoft's latest approaches to a GUI framework, used with the .NET framework. Its main advantages over the original Groestlcoin client include support for exporting blockchain.dat and including a lite wallet mode.
This wallet was previously deprecated but has been brought back to life with modern standards.

Features

Remastered Improvements

Download

Source

ALL NEW! – BIP39 Key Tool

Groestlcoin BIP39 Key Tool is a GUI interface for generating Groestlcoin public and private keys. It is a standalone tool which can be used offline.

Features

Download

Windows
Linux :
 pip3 install -r requirements.txt python3 bip39\_gui.py 

Source

ALL NEW! – Electrum Personal Server

Groestlcoin Electrum Personal Server aims to make using Electrum Groestlcoin wallet more secure and more private. It makes it easy to connect your Electrum-GRS wallet to your own full node.
It is an implementation of the Electrum-grs server protocol which fulfils the specific need of using the Electrum-grs wallet backed by a full node, but without the heavyweight server backend, for a single user. It allows the user to benefit from all Groestlcoin Core's resource-saving features like pruning, blocks only and disabled txindex. All Electrum-GRS's feature-richness like hardware wallet integration, multi-signature wallets, offline signing, seed recovery phrases, coin control and so on can still be used, but connected only to the user's own full node.
Full node wallets are important in Groestlcoin because they are a big part of what makes the system be trust-less. No longer do people have to trust a financial institution like a bank or PayPal, they can run software on their own computers. If Groestlcoin is digital gold, then a full node wallet is your own personal goldsmith who checks for you that received payments are genuine.
Full node wallets are also important for privacy. Using Electrum-GRS under default configuration requires it to send (hashes of) all your Groestlcoin addresses to some server. That server can then easily spy on your transactions. Full node wallets like Groestlcoin Electrum Personal Server would download the entire blockchain and scan it for the user's own addresses, and therefore don't reveal to anyone else which Groestlcoin addresses they are interested in.
Groestlcoin Electrum Personal Server can also broadcast transactions through Tor which improves privacy by resisting traffic analysis for broadcasted transactions which can link the IP address of the user to the transaction. If enabled this would happen transparently whenever the user simply clicks "Send" on a transaction in Electrum-grs wallet.
Note: Currently Groestlcoin Electrum Personal Server can only accept one connection at a time.

Features

Download

Windows
Linux / OSX (Instructions)

Source

UPDATED – Android Wallet 7.38.1 - Main Net + Test Net

The app allows you to send and receive Groestlcoin on your device using QR codes and URI links.
When using this app, please back up your wallet and email them to yourself! This will save your wallet in a password protected file. Then your coins can be retrieved even if you lose your phone.

Changes

Download

Main Net
Main Net (FDroid)
Test Net

Source

UPDATED – Groestlcoin Sentinel 3.5.06 (Android)

Groestlcoin Sentinel is a great solution for anyone who wants the convenience and utility of a hot wallet for receiving payments directly into their cold storage (or hardware wallets).
Sentinel accepts XPUB's, YPUB'S, ZPUB's and individual Groestlcoin address. Once added you will be able to view balances, view transactions, and (in the case of XPUB's, YPUB's and ZPUB's) deterministically generate addresses for that wallet.
Groestlcoin Sentinel is a fork of Groestlcoin Samourai Wallet with all spending and transaction building code removed.

Changes

Download

Source

UPDATED – P2Pool Test Net

Changes

Download

Pre-Hosted Testnet P2Pool is available via http://testp2pool.groestlcoin.org:21330/static/

Source

submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

Bitcoin Unlimited 1.6.0.1 has just been released

Download the latest release of Bitcoin Unlimited (1.6.0.1, July 19th, 2019) from:
 
https://www.bitcoinunlimited.info/download
 
This is a a bug fix release candidate of Bitcoin Unlimited compatible with the Bitcoin Cash protocol.
This is list of the main changes that have been merged in this release:
 
Release notes: https://github.com/BitcoinUnlimited/BitcoinUnlimited/blob/dev/doc/release-notes/release-notes-bucash1.6.0.1.md
 
PS Ubuntu PPA repository is currently being updated to serve for BUcash 1.6.0.1.
submitted by s1ckpig to btc [link] [comments]

Darwinia development team Itering wins funding from Web3 Foundation

Darwinia development team Itering wins funding from Web3 Foundation

https://preview.redd.it/9wjacfdet2g41.jpg?width=750&format=pjpg&auto=webp&s=f2344aa2383ac3d6f5fe54c21cbdd921964e5040
Web3 Foundation announced a new list of W3F Grants for its funding plan. The project Scale submitted by the Darwinia development team Itering(www.itering.io), who has received the investment support of Web3 Foundation and has become the officially recognized project of the Web3 ecosystem and Polkadot.

What is Scale

Scale is a substrate JSON-RPC API client and libraries implemented in ruby language for general use. It contains the implementation of low-level data formats, various substrate types and also supports metadata. This work is the prerequisite of our subsequent series of projects. We hope to easily access Polkadot and Substrate through our familiar language ruby, such that the applications based on Polkadot / Substrate can be developed at a fast pace. We plan to develop some substrate-based web games. The back end of these applications is prepared to be developed in ruby language, and then interact with nodes or synchronize data through RPC.

About Itering

Itering (www.itering.io) is a blockchain technology company founded in Singapore in 2018. Most of people in this company are senior blockchain developers and experts in the blockchain core technology and participate in the development the open source projects of Bitcoin, Ethereum, NEO, etc. The blockchain core development is the most important part of current development, especially the cross chain technology.
The Darwinia Network is also developed by Itering and focus on the assets exchange and help blockchain applications cross-chain. The first integration part of Darwinia Network facing on gaming is Evolution Land, which is also developed by Itering in 2018 to 2019, and have Ethereum Land and Tron Land. The goal of Itering is to promote the massive adoption of blockchain and iterate to a trust-free future. The Scale is the first big step in blockchain games and Evolution Land, and also let the Darwinia Network move much forwards to the goal.

Following Us

ITERING: https://www.itering.io/ DARWINIA: https://darwinia.network/ Twitter: https://twitter.com/DarwiniaNetwork Telegram: https://t.me/DarwiniaNetwork
submitted by sixige to dot [link] [comments]

node information on explorers

I'm trying to set my first c-lightning node with docker-compose using image from https://hub.docker.com/elementsproject/lightningd. currently, my node can connect and open channel with other nodes (and I can open a channel to the node just fine), but it's still not updated (ie. has no information) on most explorers.
the following is result of getinfo and listconfigs
getinfo { "id": "03db40337c2de299a8fa454fdf89d311615d50a27129d43286696d9e497b2b027a", "alias": "TestName", "color": "fff000", "num_peers": 3, "num_pending_channels": 0, "num_active_channels": 3, "num_inactive_channels": 0, "address": [ { "type": "ipv4", "address": "68.183.195.14", "port": 9735 } ], "binding": [ { "type": "ipv4", "address": "172.18.0.3", "port": 9735 } ], "version": "v0.7.1-906-gf657146", "blockheight": 601917, "network": "bitcoin", "msatoshi_fees_collected": 0, "fees_collected_msat": "0msat" } listconfigs { "# version": "v0.7.1-906-gf657146", "lightning-dir": "/root/.lightning", "wallet": "sqlite3:///root/.lightning/lightningd.sqlite3", "plugin": "/uslocal/bin/../libexec/c-lightning/plugins/pay", "plugin": "/uslocal/bin/../libexec/c-lightning/plugins/autoclean", "plugin": "/uslocal/bin/../libexec/c-lightning/plugins/fundchannel", "network": "bitcoin", "allow-deprecated-apis": true, "always-use-proxy": false, "daemon": "false", "rpc-file": "lightning-rpc", "rgb": "fff000", "alias": "HubTest", "bitcoin-rpcuser": [redacted], "bitcoin-rpcpassword": [redacted], "bitcoin-rpcconnect": "bitcoind", "bitcoin-retry-timeout": 60, "pid-file": "lightningd-bitcoin.pid", "ignore-fee-limits": false, "watchtime-blocks": 144, "max-locktime-blocks": 2016, "funding-confirms": 3, "commit-fee-min": 200, "commit-fee-max": 2000, "commit-fee": 500, "cltv-delta": 14, "cltv-final": 10, "commit-time": 10, "fee-base": 0, "rescan": 15, "fee-per-satoshi": 1, "max-concurrent-htlcs": 30, "min-capacity-sat": 10000, "bind-addr": "172.18.0.3:9735", "announce-addr": "68.183.195.14:9735", "offline": "false", "autolisten": true, "disable-dns": "false", "enable-autotor-v2-mode": "false", "encrypted-hsm": false, "log-level": "DEBUG", "log-prefix": "lightningd(7):" } 
is there something wrong with this configuration? or is it another issue?
I understand that explorers update their node list irregularly, and as far as the node can open channels (and can be connected), everything is fine. but this thing has bugging me for weeks.
thank you~
edit=c-lightning
submitted by 17hubest to lightningnetwork [link] [comments]

⚡ Lightning Network Megathread ⚡

Last updated 2018-01-29
This post is a collaboration with the Bitcoin community to create a one-stop source for Lightning Network information.
There are still questions in the FAQ that are unanswered, if you know the answer and can provide a source please do so!

⚡What is the Lightning Network? ⚡

Explanations:

Image Explanations:

Specifications / White Papers

Videos

Lightning Network Experts on Reddit

  • starkbot - (Elizabeth Stark - Lightning Labs)
  • roasbeef - (Olaoluwa Osuntokun - Lightning Labs)
  • stile65 - (Alex Akselrod - Lightning Labs)
  • cfromknecht - (Conner Fromknecht - Lightning Labs)
  • RustyReddit - (Rusty Russell - Blockstream)
  • cdecker - (Christian Decker - Blockstream)
  • Dryja - (Tadge Dryja - Digital Currency Initiative)
  • josephpoon - (Joseph Poon)
  • fdrn - (Fabrice Drouin - ACINQ )
  • pmpadiou - (Pierre-Marie Padiou - ACINQ)

Lightning Network Experts on Twitter

  • @starkness - (Elizabeth Stark - Lightning Labs)
  • @roasbeef - (Olaoluwa Osuntokun - Lightning Labs)
  • @stile65 - (Alex Akselrod - Lightning Labs)
  • @bitconner - (Conner Fromknecht - Lightning Labs)
  • @johanth - (Johan Halseth - Lightning Labs)
  • @bvu - (Bryan Vu - Lightning Labs)
  • @rusty_twit - (Rusty Russell - Blockstream)
  • @snyke - (Christian Decker - Blockstream)
  • @JackMallers - (Jack Mallers - Zap)
  • @tdryja - (Tadge Dryja - Digital Currency Initiative)
  • @jcp - (Joseph Poon)
  • @alexbosworth - (Alex Bosworth - yalls.org)

Medium Posts

Learning Resources

Books

Desktop Interfaces

Web Interfaces

Tutorials and resources

Lightning on Testnet

Lightning Wallets

Place a testnet transaction

Altcoin Trading using Lightning

  • ZigZag - Disclaimer You must trust ZigZag to send to Target Address

Lightning on Mainnet

Warning - Testing should be done on Testnet

Atomic Swaps

Developer Documentation and Resources

Lightning implementations

  • LND - Lightning Network Daemon (Golang)
  • eclair - A Scala implementation of the Lightning Network (Scala)
  • c-lightning - A Lightning Network implementation in C
  • lit - Lightning Network node software (Golang)
  • lightning-onion - Onion Routed Micropayments for the Lightning Network (Golang)
  • lightning-integration - Lightning Integration Testing Framework
  • ptarmigan - C++ BOLT-Compliant Lightning Network Implementation [Incomplete]

Libraries

Lightning Network Visualizers/Explorers

Testnet

Mainnet

Payment Processors

  • BTCPay - Next stable version will include Lightning Network

Community

Slack

IRC

Slack Channel

Discord Channel

Miscellaneous

⚡ Lightning FAQs ⚡

If you can answer please PM me and include source if possible. Feel free to help keep these answers up to date and as brief but correct as possible
Is Lightning Bitcoin?
Yes. You pick a peer and after some setup, create a bitcoin transaction to fund the lightning channel; it’ll then take another transaction to close it and release your funds. You and your peer always hold a bitcoin transaction to get your funds whenever you want: just broadcast to the blockchain like normal. In other words, you and your peer create a shared account, and then use Lightning to securely negotiate who gets how much from that shared account, without waiting for the bitcoin blockchain.
Is the Lightning Network open source?
Yes, Lightning is open source. Anyone can review the code (in the same way as the bitcoin code)
Who owns and controls the Lightning Network?
Similar to the bitcoin network, no one will ever own or control the Lightning Network. The code is open source and free for anyone to download and review. Anyone can run a node and be part of the network.
I’ve heard that Lightning transactions are happening “off-chain”…Does that mean that my bitcoin will be removed from the blockchain?
No, your bitcoin will never leave the blockchain. Instead your bitcoin will be held in a multi-signature address as long as your channel stays open. When the channel is closed; the final transaction will be added to the blockchain. “Off-chain” is not a perfect term, but it is used due to the fact that the transfer of ownership is no longer reflected on the blockchain until the channel is closed.
Do I need a constant connection to run a lightning node?
Not necessarily,
Example: A and B have a channel. 1 BTC each. A sends B 0.5 BTC. B sends back 0.25 BTC. Balance should be A = 0.75, B = 1.25. If A gets disconnected, B can publish the first Tx where the balance was A = 0.5 and B = 1.5. If the node B does in fact attempt to cheat by publishing an old state (such as the A=0.5 and B=1.5 state), this cheat can then be detected on-chain and used to steal the cheaters funds, i.e., A can see the closing transaction, notice it's an old one and grab all funds in the channel (A=2, B=0). The time that A has in order to react to the cheating counterparty is given by the CheckLockTimeVerify (CLTV) in the cheating transaction, which is adjustable. So if A foresees that it'll be able to check in about once every 24 hours it'll require that the CLTV is at least that large, if it's once a week then that's fine too. You definitely do not need to be online and watching the chain 24/7, just make sure to check in once in a while before the CLTV expires. Alternatively you can outsource the watch duties, in order to keep the CLTV timeouts low. This can be achieved both with trusted third parties or untrusted ones (watchtowers). In the case of a unilateral close, e.g., you just go offline and never come back, the other endpoint will have to wait for that timeout to expire to get its funds back. So peers might not accept channels with extremely high CLTV timeouts. -- Source
What Are Lightning’s Advantages?
Tiny payments are possible: since fees are proportional to the payment amount, you can pay a fraction of a cent; accounting is even done in thousandths of a satoshi. Payments are settled instantly: the money is sent in the time it takes to cross the network to your destination and back, typically a fraction of a second.
Does Lightning require Segregated Witness?
Yes, but not in theory. You could make a poorer lightning network without it, which has higher risks when establishing channels (you might have to wait a month if things go wrong!), has limited channel lifetime, longer minimum payment expiry times on each hop, is less efficient and has less robust outsourcing. The entire spec as written today assumes segregated witness, as it solves all these problems.
Can I Send Funds From Lightning to a Normal Bitcoin Address?
No, for now. For the first version of the protocol, if you wanted to send a normal bitcoin transaction using your channel, you have to close it, send the funds, then reopen the channel (3 transactions). In future versions, you and your peer would agree to spend out of your lightning channel funds just like a normal bitcoin payment, allowing you to use your lightning wallet like a normal bitcoin wallet.
Can I Make Money Running a Lightning Node?
Not really. Anyone can set up a node, and so it’s a race to the bottom on fees. In practice, we may see the network use a nominal fee and not change very much, which only provides an incremental incentive to route on a node you’re going to use yourself, and not enough to run one merely for fees. Having clients use criteria other than fees (e.g. randomness, diversity) in route selection will also help this.
What is the release date for Lightning on Mainnet?
Lightning is already being tested on the Mainnet Twitter Link but as for a specific date, Jameson Lopp says it best
Would there be any KYC/AML issues with certain nodes?
Nope, because there is no custody ever involved. It's just like forwarding packets. -- Source
What is the delay time for the recipient of a transaction receiving confirmation?
Furthermore, the Lightning Network scales not with the transaction throughput of the underlying blockchain, but with modern data processing and latency limits - payments can be made nearly as quickly as packets can be sent. -- Source
How does the lightning network prevent centralization?
Bitcoin Stack Exchange Answer
What are Channel Factories and how do they work?
Bitcoin Stack Exchange Answer
How does the Lightning network work in simple terms?
Bitcoin Stack Exchange Answer
How are paths found in Lightning Network?
Bitcoin Stack Exchange Answer
How would the lightning network work between exchanges?
Each exchange will get to decide and need to implement the software into their system, but some ideas have been outlined here: Google Doc - Lightning Exchanges
Note that by virtue of the usual benefits of cost-less, instantaneous transactions, lightning will make arbitrage between exchanges much more efficient and thus lead to consistent pricing across exchange that adopt it. -- Source
How do lightning nodes find other lightning nodes?
Stack Exchange Answer
Does every user need to store the state of the complete Lightning Network?
According to Rusty's calculations we should be able to store 1 million nodes in about 100 MB, so that should work even for mobile phones. Beyond that we have some proposals ready to lighten the load on endpoints, but we'll cross that bridge when we get there. -- Source
Would I need to download the complete state every time I open the App and make a payment?
No you'd remember the information from the last time you started the app and only sync the differences. This is not yet implemented, but it shouldn't be too hard to get a preliminary protocol working if that turns out to be a problem. -- Source
What needs to happen for the Lightning Network to be deployed and what can I do as a user to help?
Lightning is based on participants in the network running lightning node software that enables them to interact with other nodes. This does not require being a full bitcoin node, but you will have to run "lnd", "eclair", or one of the other node softwares listed above.
All lightning wallets have node software integrated into them, because that is necessary to create payment channels and conduct payments on the network, but you can also intentionally run lnd or similar for public benefit - e.g. you can hold open payment channels or channels with higher volume, than you need for your own transactions. You would be compensated in modest fees by those who transact across your node with multi-hop payments. -- Source
Is there anyway for someone who isn't a developer to meaningfully contribute?
Sure, you can help write up educational material. You can learn and read more about the tech at http://dev.lightning.community/resources. You can test the various desktop and mobile apps out there (Lightning Desktop, Zap, Eclair apps). -- Source
Do I need to be a miner to be a Lightning Network node?
No -- Source
Do I need to run a full Bitcoin node to run a lightning node?
lit doesn't depend on having your own full node -- it automatically connects to full nodes on the network. -- Source
LND uses a light client mode, so it doesn't require a full node. The name of the light client it uses is called neutrino
How does the lightning network stop "Cheating" (Someone broadcasting an old transaction)?
Upon opening a channel, the two endpoints first agree on a reserve value, below which the channel balance may not drop. This is to make sure that both endpoints always have some skin in the game as rustyreddit puts it :-)
For a cheat to become worth it, the opponent has to be absolutely sure that you cannot retaliate against him during the timeout. So he has to make sure you never ever get network connectivity during that time. Having someone else also watching for channel closures and notifying you, or releasing a canned retaliation, makes this even harder for the attacker. This is because if he misjudged you being truly offline you can retaliate by grabbing all of its funds. Spotty connections, DDoS, and similar will not provide the attacker the necessary guarantees to make cheating worthwhile. Any form of uncertainty about your online status acts as a deterrent to the other endpoint. -- Source
How many times would someone need to open and close their lightning channels?
You typically want to have more than one channel open at any given time for redundancy's sake. And we imagine open and close will probably be automated for the most part. In fact we already have a feature in LND called autopilot that can automatically open channels for a user.
Frequency will depend whether the funds are needed on-chain or more useful on LN. -- Source
Will the lightning network reduce BTC Liquidity due to "locking-up" funds in channels?
Stack Exchange Answer
Can the Lightning Network work on any other cryptocurrency? How?
Stack Exchange Answer
When setting up a Lightning Network Node are fees set for the entire node, or each channel when opened?
You don't really set up a "node" in the sense that anyone with more than one channel can automatically be a node and route payments. Fees on LN can be set by the node, and can change dynamically on the network. -- Source
Can Lightning routing fees be changed dynamically, without closing channels?
Yes but it has to be implemented in the Lightning software being used. -- Source
How can you make sure that there will be routes with large enough balances to handle transactions?
You won't have to do anything. With autopilot enabled, it'll automatically open and close channels based on the availability of the network. -- Source
How does the Lightning Network stop flooding nodes (DDoS) with micro transactions? Is this even an issue?
Stack Exchange Answer

Unanswered Questions

How do on-chain fees work when opening and closing channels? Who pays the fee?
How does the Lightning Network work for mobile users?
What are the best practices for securing a lightning node?
What is a lightning "hub"?
How does lightning handle cross chain (Atomic) swaps?

Special Thanks and Notes

  • Many links found from awesome-lightning-network github
  • Everyone who submitted a question or concern!
  • I'm continuing to format for an easier Mobile experience!
submitted by codedaway to Bitcoin [link] [comments]

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