Groestl

블록체인 기반 익명 결제 플랫폼

home link https://www.groestlcoin.com/ko/

reference material

Community

Exchanges that listed the coin
4
Symbol
GRS
Dapp
To be released
Project introduction

그로스톨은 기존의 비트코인에서 서명 부분을 분리한 세그윗(Segwit)을 처음으로 활성화한 암호화폐입니다.

기존의 비트코인은 블록 1개의 용량이 1MB로 제한되어 있어 많은 거래내역을 처리하기 어려웠으나, 거래정보 중에서 사용자 서명 부분을 분리하여 별도로 저장하는 세그윗을 통해 한 개 블록에 더 많은 거래정보를 담을 수 있게 되었습니다.

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Medium

Groestlcoin 22nd December 2...

As per usual the 3 months has been all hand-on-deck, helping to bring further adoption utilities to Groestlcoin. The markets have been red but as always that doesn’t stop the show from going on with regards to the development since the last release update on 24th September. Here’s a recap of what has happened so far:Recap:Groestlcoin was added to Changelly. One of the leading Crypto-to-Crypto exchanges that offer some of the best rates on the market — You can also buy with a debit/credit card too and you can buy/sell Groestlcoin directly from your Coinomi wallet, from the website https://groestlcoin.org#exchanges, and you can enable Changelly swaps on your GRSPay stores!Groestlcoin was added to the JAXX Liberty wallet! One of the leading multi-crypto wallets in the stores. Safely store your GRS on Android, iOS, Mac OS X, Windows, Linux or Google Chrome. With Jaxx Liberty you are always in control of your private keys, and you can use your wallet on multiple devices. Note: This directly replaces the deprecated JS Wallet which was of a similar (but older) codebase.Groestlcoin was integrated into AtomicPay — A decentralised cryptocurrency payment processor that eliminates the involvement of a third-party gateway, allowing merchants to accept payments directly from their customers, with over 2500 merchants already signed up, a public release is set for Mid-January 2019.Huobi officially opened trading for Groestlcoin to Korean customers! And in addition, a giveaway of up to 10,000 GRS was held!Unocoin ATMs started supporting Groestlcoin at their ATMs, granting the Indian community the ability to withdraw (For INR) and deposit Groestlcoin into their UnoDax account. Groestlcoin $GRS is available on #Unodax exchange with the following pairs: $INR, $TUSD, $BTC.Groestlcoin was listed on SWFT BLOCKCHAIN, giving you more opportunities to swap your other altcoins with Groestlcoin or vice versa, quickly and securely.Groestlcoin was added to One Page Exchange! Where you can buy and sell Groestlcoin quickly and easily without any form of registration!CryptoWolf started accepting VISA, Mastercard and Maesto to buy cryptocurrencies from the CryptoWolf exchange in EUR or USD! Providing a new FIAT gateway to buy Groestlcoin.Groestlcoin has been added to CoinZark (Formally VertPig) for fast and efficient Crypto-to-Crypto swaps at very competitive rates using exchange aggregates.Groestlcoin was added to PungoWallet! Pungo wallet is built to showcase the features that anyone can achieve with blockchain technology. They have built a set of modular solutions that allow any company to build a blockchain layer to interact with traditional software.Groestlcoin was added to StealthEX, offering anonymous cryptocurrency swaps with tens of other coins without disclosing any personal information. Just choose the pairs, enter your address, send your coins and receive your funds!Groestlcoin joined InvestFeed, granting a company listing and blue verified badge.Groestlcoin was officially added to Blockfolio Signals — For those of you that use Blockfolio, you can keep updated with all the latest news straight from the app, via the Signals icon.Groestlcoin has been added to DeltaDirect — Those using Delta can now stay up-to-date with the latest Groestlcoin news, straight from your Delta portfolio tracker app.Groestlcoin has been added to CoinGecko Beam — Where you can easily follow us and receive updates without searching through social media.Groestlcoin is now live on BitUniverse Link! All of the latest Groestlcoin updates and news will be directly available on BItUniverse.Groestlcoin was added to NovaExchange! Launched in 2016 and operating from Sweden, users can trade over 300 different digital assets.It come to light that the new Baikal BK-G28 supported the Groestl algorithm, after great lengths of discussion, the core development team decided to not fork away from these ASICs for the near future. If you missed it, a full statement on the subject can be found here: https://medium.com/@groestlcoin/groestlcoin-asic-statement-953f47baee98What’s New?Groestlcoin on Trezor Model TAs of the latest version of the Trezor Model T firmware, Groestlcoin is now officially supported! The Trezor Model T is the next-generation cryptocurrency hardware wallet, designed to be your universal vault for all of your digital assets. Store and encrypt your coins, passwords and other digital keys with confidence. The Trezor Model T now supports over 500 cryptocurrencies.Blockbook MainNet & TestNet Block ExplorerBlockbook is an open-source Groestlcoin blockchain explorer with complete REST and websocket APIs that can be used for writing web wallets and other apps that need more advanced blockchain queries than provided by groestlcoind RPC.Blockbook REST API provides you with a convenient, powerful and simple way to read data from the groestlcoin network and with it, build your own services.Features:Support to broadcast transactions online. Broadcast a raw transaction in hex format over the Groestlcoin network.Supports every web browserAPI — Complete REST and Websocket API for querying blocks, transactions and addresses; and receiving live updatesLight — Thin data model using groestlcoind RPC interface to validate blockchain information. Fast groestlcoind blockchain synchronisation (~1hrs for the entire mainnet), using RocksDB for data storage and optionally raw groestlcoind data files processing.Exhaustive — Reports on double spend attempts, outpoint confirmations, outputs spend status reports. Input and Output hyperlinks in transactions. Extended view in transactions to show advanced details.Open Source, written in the Go programming language.Blockbook is available via https://blockbook.groestlcoin.org/Blockbook testnet: https://blockbook-test.groestlcoin.org/Source code: https://github.com/Groestlcoin/blockbook3rd party walletsEdge WalletGroestlcoin has been added to the Edge wallet for Android and iOS. Edge wallet is secure, private and intuitive. By including support for ShapeShift, Simplex and Changelly, Edge allows you to seamlessly shift between digital currencies, anywhere with an internet connection.Features:Multi-Asset Support. Supporting Bitcoin, Ethereum, Groestlcoin and many others, you can safely hold your coins.Exchange Support — Supporting Shapeshift, Simplex and Changelly enables the user to seamlessly shift between digital currencies as if you were storing your funds on an exchange.In-app buying and selling, exchange your FIAT for cryptocurrency directly within the app.Encrypted with a username and password. Seamless login into multiple devices.Easy, secure access with PIN or fingerprint. Additionally, supporting 2FA authentication.Client-side encryption — All of your data is encrypted on your device before any of your information touches the Edge servers. Being free from server-side hacks and malware means that your assets are as secure as they can be.Multi-Platform — Supporting both Android and iOS.Android: https://play.google.com/store/apps/details?id=co.edgesecure.appiOS: https://itunes.apple.com/us/app/edge-bitcoin-wallet/id1344400091?mt=8Edge app: https://grs.edge.app/CoinID Wallet — Mainnet & TestnetWe are excited to announce that Groestlcoin has been added to CoinID! With integrated cold and hot wallet support, and a host of other unique wallet features, CoinID can easily become your go-to wallet for storing Groestlcoin.Features:Integrated Cold wallet. Store your funds offline and sleep tight at night. All you need is a separate Android or iOS device.Transaction Batching — A feature normally reserved for exchanges, CoinID supports transaction batching, allowing the user to group transactions into one, saving space on the blockchain and lowering your transaction fees considerably as a result.Complete control — Your private keys never leaves your device. “If you don’t control your private keys, you don’t own your coins”.SegWit support — Support for Segregated Witness, which means smaller transaction sizes, lower fees, and supporting all 3 address types (grs1, 3, F).Hierarchical Deterministic — Use a single set of keys for multiple coins and addresses. When an address is used, a new one is generated.Cross-Platform — Built with React Native for rapid development cycles and cross-platform support.Android: https://play.google.com/store/apps/details?id=org.coinid.wallet.grsAndroid Testnet: https://play.google.com/store/apps/details?id=org.coinid.wallet.tgrsiOS: https://itunes.apple.com/us/app/grs-wallet-for-coinid/id1439638550iOS Testnet: https://itunes.apple.com/us/app/grs-testnet-wallet-for-coinid/id1445223146Groestlcoin Sentinel — Windows ReleasedGroestlcoin Sentinel is the easiest and fastest way to track balances of your Groestlcoin addresses.Features:No private keys required at all. Sentinel uses only your public addresses to keep track of your balances.Capable of holding multiple groestlcoin address with tags, address and their balances.Validating each address with Base58_encoding and new Bech32 format for SegWit.Using a grid view to show the list, making it easy to add/edit/remove lines at a whim.Import addresses in bulk from file, or paste into the textbox (Line separated)Using block explorer API services to update balancesUSD value is easy to see from using CoinMarketCap or Chainz.CryptoId.Info APIsSee the total Groestlcoin amount in BTC, USD and a user-defined local currency.Sentinel will automatically attempt to select your local currency, changeable in the settings.Automatical refreshing of your balances at regular intervals.You can download it using the links below.Download the Windows Wallet (64 bit) here: https://github.com/Groestlcoin/Groestlcoin-Sentinel-Windows/releases/download/1.0/SentinelSetup_x64.msiDownload the Windows Wallet (32 bit) here: https://github.com/Groestlcoin/Groestlcoin-Sentinel-Windows/releases/download/1.0/SentinelSetup_x86.msiSource code: https://github.com/Groestlcoin/Groestlcoin-Sentinel-Windows/Groestlcoin BIP39 Tool 0.3.9 UpdateThe Groestlcoin BIP39 tool is an open-source web tool for converting BIP39 mnemonic codes to addresses and private keys. This enables the greatest security against third-party wallets potentially disappearing — You’ll still have access to your funds thanks to this tool.What’s NewAdded Coinomi, Ledger Client, Groestlcoinomi, Trezor, Safe T, Core, Groestlpay and Samourai to BIP32 TabAdded BIP49 supportAdd BIP38 supportAdd CSV tab for derived addressesBIP84 tab for derivation pathDisplay version number in top right cornerGroestlcoin ticker is now also displayedRefactor method to clear old data from the displayBIP44 ‘purpose’ and ‘coin’ fields have been made read onlyTab Order is now alphabeticalImprove showing feedback for pending calculationsShow error when using XPUB with hardened addressesRename variables for clarity between BIP49 and P2WPKH Nested in P2SHQR Codes use correctLevel 3 instead of 2Update compile script to work across python 2 and 3Add BIP49 to More Info sectionReword entropy text to indicate using a single source onlyDetect and warn when entropy is filtered / discardedUse new xpub/xprv prefixes for Segwit BIP49Allow more rows to be generated starting from a custom indexBIP141 tab added for full Segwit compatibilityShow list of word indexes. Checksum shows in entropy detailsPopulate entropy field with hex value used from PRNGQR codes with accents now work correctly by replacing jquery.qrcode with kjuaAllow initial number of rows to be set by the userRaw entropy shows groupings with space every 11 bits for easier usageWarn that entropy values should exclude checksumWarn when generating low entropy mnemonicsWarn when overriding weak entropy with a strong mnemonic lengthAllow XPUB to be used as root key for Segwit derivationsAdd visual privacy safeguard. List alternative toolsUpdate bootstrap from 3.2.0 to 3.3.7 and jQuery from 2.1.1 to 3.2.1GroestlcoinJS library upgraded to v3.3.2General code refactoring, numerous performance improvements and bug fixesDownload the Groestlcoin BIP39 tool here: https://github.com/Groestlcoin/bip39/archive/master.zipDirect link: https://groestlcoin.org/bip39/Source code: https://github.com/groestlcoin/bip39Electrum-GRS 3.2.3 UpdateElectrum-GRS is a lightweight “thin client” Groestlcoin wallet Windows, MacOS and Linux based on a client-server protocol. Its main advantages over the original Groestlcoin client include support for multi-signature wallets and not requiring the download of the entire block chain.What’s NewHARDWARE WALLET SUPPORT: Archos Safe-T Mini is now fully supportedElectrum + Android Version 3.2.3:If a BIP39 seed extension/passphrase contained multiple consecutive whitespaces or leading/trailing whitespaces, then the derived addresses were not following spec. This has been fixed, and anyone affected should move their codes. The wizard will show a warning in this case.The PRNG used has been changedFix Linux distributable, ‘typing’ was not bundled and was required for Python 3.4Fix spending from Segwit multi-sig wallets involving a Trezor co-signer when using a custom derivation path.Several other minor bugfixes and usability improvements.Android: https://play.google.com/store/apps/details?id=org.groestlcoin.electrumgrsWindows & OSX: https://github.com/Groestlcoin/electrum-grs/releases/Linux:sudo apt-get install python3-setuptools python3-pyqt5 python3-pip python3-dev libssl-devsudo pip3 install groestlcoin_hashsudo pip3 install https://github.com/Groestlcoin/electrum-grs/releases/download/v3.2.3/Electrum-grs-3.2.3.tar.gzelectrum-grsGitHub Source server: https://github.com/Groestlcoin/electrumx-grsGithub Source server installer: https://github.com/Groestlcoin/electrumx-grs-installerGithub Source client: https://github.com/Groestlcoin/electrum-grsGroestlcoin ivendPay IntegrationivendPay and Groestlcoin cryptocurrency have announced the start of integration.IT company ivendPay, the developer of a universal multicurrency payment module for automatic and retail trade, intends to integrate Groestlcoin cryptocurrency — one of the oldest and the most reputable Bitcoin forks into the payment system. Groestlcoin is characterized by instant transactions with almost zero commission and is optimal for mass retail trade where micropayments are mostly used.According to Sergey Danilov, founder and CEO of ivendPay, Groestlcoin will become the 11th cryptocurrency integrated into the payment module. The first working vending machines for the sale of coffee, snacks and souvenirs, equipped with ivendPay modules, served the visitors of the CryptoEvent RIW exhibition at VDNKh in Moscow.ivendPay terminals are designed and patented to accept payments in electronic money, cryptocurrencies and cash when connecting the corresponding cash terminal. Payment for the purchase takes a few seconds, the choice of the payment currency occurs at the time of placing the order on the screen, the payment is made by QR-code through the cryptocurrency wallet on the smartphone.The interest in equipping vending machines with ivendPay terminals has already been shown by the companies of Malaysia and Israel, where first test networks would be installed. ivendPay compiles a waiting list for vending networks interested in buying terminals and searches for an investor to launch industrial production. According to Sergey Danilov, the universal payment terminal ivendPay for the vending machine will cost about $500.The founder of ivendPay has welcomed the appearance of Groestlcoin among integrated cryptocurrencies, as it is another step towards the realization of the basic idea of digital money — free and cross-border access to goods and services for everybody.

Groestl

18. 12. 25

Groestlcoin ASIC Statement

We would like to make a formal statement to address the release of the new Baikal BK-G28 ASIC which supports our Groestl algorithm. Many of you have had questions and discussions regarding whether Groestlcoin will or should hard-fork to a new Proof-of-Work algorithm.A testament to Groestlcoins recent successASICs are largely considered the devil for altcoins and altcoin mining, and with good reason. As a community and as the Groestlcoin team, we would love for the security of Groestlcoin to increase whilst remaining a GPU-only coin. Unfortunately, as the coin becomes more successful, people will ultimately create ASICs for any algorithm that is profitable, and the production of ASICs are a testament to the booming success Groestlcoin has been over the past year. The time has come to look at how these ASICs affect Groestlcoin as a community and as a cryptocurrency.Initially, it makes sense for the developers to change the PoW algorithm to keep mining decentralised. ASICs threaten the original goal of Groestlcoin and it threatens the mining profitability of GPU miners. We are aware that a small majority of the Groestlcoin community vote for changing the PoW algorithm whenever there is a poll or discussion on the matter. This statement will try to explain as best we can the effects of a hard-fork of this nature and the constant struggle that would follow.Are you hard-forking?Ever since the genesis block of Groestlcoin over 4 years ago, it has faced these hard-fork dilemmas. At first, it was purely a CPU-only minable coin, a month later, it was made possible for GPUs to mine Groestlcoin. Around a year ago, open source implementations of FPGAs started popping up on Github. Now Groestlcoin faces its first ASIC. At each stage, the consideration to hard-fork to another algorithm was discussed and at each time to this pointit was agreed that no hard-fork was necessary. Based on these decisions over the past 4+ years,Groestlcoin is still standing and has seen vast growths in community and development.With the revelation of ASICs for Groestlcoin, the discussion was met again with all the developers and after heated discussions, the unanimous consensus amongst the team is to not hard-fork away from ASIC miners. Given the recent 51% and double-spend attacks performed on several big-named altcoins over the past two years, our personal views on ASICs have changed dramatically. We now undoubtedly believe that; for the reasons we hope to express in this statement, ASICs are the correct and inevitable evolution for any successful cryptocurrency.Why has this decision been made?We do not feel that any PoW algorithm in existence today can be considered GPU-Only, if there aren’t ASICs for an algorithm, chances are there will be, and we can guarantee there are FPGAs in production that are far out-weighing the profitability and usefulness of GPUs.The issues behind running from an ASIC each time it is found after each algorithm change are as follows:· Make no mistake, hard-forks are messy and can be disastrous if not handled with finesse. With each algorithm change requires a hard-fork, and with each hard-fork splits the coin into two chains and all nodes (users, exchanges, pool operators etc.) must then move to the new chain. It can be considerable work for node operators to update the nodes/wallets to continue operating. Hard-forking due to major bugs in the code is obviously necessary, however, it is far more difficult to convince node operators to keep operating the new chain if just for an algorithm change. With a relatively small cryptocurrency, this proves difficult, and if two chains were to split and consensus fails, the fungibility of Groestlcoin could be destroyed — You can imagine the issues that come from a split chain, consider a merchant is accepting Groestlcoin but is still on the old chain, and you send Groestlcoin from the new chain. That merchant would not receive the payment. Also consider if Exchange 1 moved to the new chain but Exchange 2 did not, and you tried withdrawing your funds between exchanges.· After the algorithm change, our hash rate will inevitably decline. With a smaller hash-rate and lower difficulty, the blockchain is more vulnerable to attack via 51% attacks and double-spend attacks. Pool operators may stop supporting Groestlcoin or take time to support the new algorithm and miners will find new coins to mine.· Mining with a GPU is not more decentralised. There are people running over a thousand GPUs mining farms currently doing the same as what ASICs will do, but at a higher monetary environmental cost.Finality, Security, and RisksIt is the duty of the developers of a decentralised currency to ensure that the network is secure and functions the way it was intended to function. For Groestlcoin to succeed as a currency we need transaction finality i.e. once a transaction is confirmed, the users want to know that nobody can take this money away from us — This is what we are trying to move away with a cryptocurrency as opposed to a traditional FIAT banking system, aren’t we? Proof-of-Work provides that, the history of the chain must not be altered without doing a lot of work. With Groestlcoin, we know that the only way we can lose that money is if an alternate history appears that doesn’t include our payment, and that alternate history has more work than the history we see.The facts remain that GPU-mineable coins are far more prone to being attacked than coins with ASICs and ultimately the security of the blockchain must be the core priority of the Groestlcoin core developers in order to protect the community’s funds from future potential attacks. If nobody mines Groestlcoin, the coin dies, if the coin is 51% attacked, the image of the coin is dramatically damaged as well as potentially people’s funds and can lead to delisting’s or permanently high confirmation requirements. The purpose of Proof-of-Work is to make attacking as expensive as possible, and ASICs help to achieve this.We have already touched upon some of the issues that come with low-hash-rate PoW cryptocurrencies, but we’d like to take a moment to explain further the risks of GPU-Only mining. Many of you would have seen of the issues other cryptocurrencies have faced in the past year with regards to 51% and double spend attacks and the damage that they have done to the image of the coins. As we mentioned above, having an ASIC developed shows that Groestlcoin has been successful thus far, and now Groestlcoin can be protected by hardware from these catastrophic attacks. The value of a cryptocurrency can only truly be quantified by how secure the network of that cryptocurrency is.With more security comes with it the reduced risk of 51% attacks where a single centralised entity can change the history of the blockchain, or exclusively mine all empty blocks and claim the block rewards for themselves — Grinding transactions to a halt and effectively killing the chain. Additionally, an attacker would be able to double-spend coins which we’ll not go into detail but has been discussed in great depth elsewhere. For coins with ASICs, the incentives to protect the network against this manipulation protect against this type of user manipulation, due to the costs associated with ASICs.The decentralisation gained with a fairly distributed hash-rate of GPU-miners is overshadowed by the fact the currency is considerably more vulnerable to 51% attacks by centralised parties.We hope you’ll agree that the advantage that ASIC-mining have in the longer term over GPU-mining are plentiful.So… Embracing ASICsWith all things considered, we believe embracing ASICs is more viable than trying to fight them off to the detriment of the coins security and the risks that come with that. However, we do not believe that any cryptocurrency should embrace an abusive ASIC monopoly. ASIC manufacturers have a vested interest to protect the network from attack in order to protect their long-term investment of the manufacturing and maintaining of their developed hardware. We feel we should all accept ASICs as a sign of coin maturity.For those community members screaming that ASICs are a disaster, please know that ASICs will not kill Groestlcoin. ASICs were first seen on Bitcoin and Litecoin, and they have helped secure the growing network from attacks ever since. Many other non-dominant coins were forced to merge-mine with Bitcoin and Litecoin in order to remain secure from attacks. Groestlcoin is the most dominant cryptocurrency using the Groestl512 PoW algorithm. Due to this; if we forked from this algorithm, another ‘less dominant’ cryptocurrency using Groestl would receive this security and become more secure than Groestlcoin — Effectively conceding its place as a dominant blockchain and a dominant cryptocurrency in the mining space.In Closing…In summary, the decision to not hard-fork to a new algorithm at this time has not been made lightly. We hope that you recognise the indirect benefits outweigh the smaller but more visible detriments of ASICs running on our network. Ultimately, we feel there is a greater chance of the coin dying from chasing an ASIC-Resistant PoW algorithm than from the introduction of ASICs on to our network.As the core developers, we MUST consider the coin security above all else.We recognise that ASICs are not an ideal solution for a globally recognised decentralised cryptocurrency. We feel that neither are GPU-Only mining; currently the security offered from GPU-Only mining is not secure enough to be considered a safe, globally recognised currency. We feel that sacrificing the increased network security and risking chain forks back to another imperfect solution is not the right answer. This doesn’t mean we will never fork away from ASICs, but we need a suitable solution that both ensures the security of the network and ensures the network is suitably more decentralised.What’s next for Groestlcoin?From Groestlcoin inception until now, the coin’s development never stopped, and will never stop no matter what challenges we might face in the future.We will continue to work hard so we can give to our community the best tech there is for Peer-to-Peer Electronic Cash System.Below you’ll find our next developments and here you can see all our development progress: https://www.groestlcoin.org/development-progress/.

Groestl

18. 10. 31

Groestlcoin 22nd March Dev....

The first quarter of Groestlcoin has been one of the busiest quarters for the Groestlcoin developers than any other. Unlike other cryptocurrencies who fail to deliver on their roadmap promises on time, Groestlcoin is far ahead of their roadmap currently.Here’s an overview of what we have done already throughout Q1 2018:On-Chain Atomic Swaps with Komodo (KMD) on BarterDEX and added to their exchange platform.Added to new exchange Crypto WolfAdded to Cryptocurrency Aggregate CoinSwitchAdded to Bittylicious, creating a new way to buy directly with USD, GBP and EUR.Increased our electrum servers from already impressive 80 to 120 servers!More marketing than ever before, and we will be doing more than that hereafter. A throwback to this fantastic video commissioned by us and produced by Moginger: https://www.youtube.com/watch?v=JR6Ezf_ahocBeing added to new Korean exchange Coinbit, launching in Early April, along with an 18,000 GRS giveaway.GROESTLCOIN DEVELOPMENT RELEASEGroestlcoin BIP39 ToolGroestlcoin BIP39 is a tool for converting BIP39 mnemonic phrases to addresses and private keys.Features: • Support for Groestlwallet (Use path m/0'/0) • Support for MultiGroestl HD (Use path m/0'/0) • Support for Simple Groestlcoin (Use path m/0'/0) • Support for Groestlcoin Electrum GRS (Use path m/44'/17'/0'/0) • Support for Coinomi (Use path m/44'/17'/0'/0) • Support for Groestlpay (use path m/44'/0'/0'/0) • Support for GRS Mainnet and GRS Testnet • You can enter an existing BIP39 recovery phrase, or generate a new random one (typing your own twelve words will probably not work how you expect, since the words require a particular structure as the last word is a checksum) • Number of words support for: 3, 6, 9, 12, 15, 18, 21 and 24 • BIP32 support • BIP44 supportElectrum-GRS 3.0.6 UPDATEElectrum-GRS has been updated from version 2.5.4 to 3.0.6 — That’s quite a jump! But as we saw with Electrum 2.7 and the vunurabilities that were found several months after release, you cannot be too careful. We are as sure as we can be that Electrum 3.0.6 is the most secure version of Electrum to date. Additionally this version brings with it BIP0032 addresses. You can now create a Segwit wallet with Electrum which will give you addresses that start with ‘grs1’ instead of ‘F’.Please note that some exchanges and pools may not yet recognise these addresses and consider them invalid whilst they update. Along with the release comes ‘Replace-By-Fee’, which allows you to increase the fee of a transaction if it has not confirmed quick enough (Not an issue we currently will have with Groestlcoin but it’s a nice feature! There is so much that has changed with the wallet so have a read through the release notes, upgrade and have a play!Changelog Electrum-GRS 3.0.6: • Moved away from Linux binary file. Users must compile from source now. • Moved away from electrum-grs-server codebase to electrumx-grs 1.2 • The source code is relicensed under the MIT Licence • Separation between plugins and GUIs • The command line uses jsonrpc to communicate with the daemon • Alternative coin selection policy, designed to help preserve user privacy. Enable it by setting the Coin Selection preference to Privacy. • The install wizard has been rewritten and improved • Support minikeys for private key import and sweeping • QT: add colors to labels • The wallet file format has been upgraded. This upgrade is not backward compatible, which means that a wallet upgraded to the 2.7 format will not be readable by earlier versions of Electrum-GRS. Multiple accounts inside the same wallet are not supported in the new format; the Qt GUI will propose to split any wallet that has several accounts. Make sure that you have saved your seed phrase before you upgrade Electrum-GRS. • This version introduces a separation between wallets types and keystores types. ‘Wallet type’ defines the type of Groestlcoin contract used in the wallet, while ‘keystore type’ refers to the method used to store private keys. • Replace-By-Fee: RBF transactions are supported in Qt. A warning is displayed in the history for transactions that are replaceable, have unconfirmed parents, or that have very low fees. • Qt GUI: — A fee slider is visible in the in send tab — The Address tab is hidden by default, can be shown with Ctrl-A — UTXOs are displayed in the Address tab • Seed phrases can be extended with a user-chosen passphrase. The length of seed phrases is standardized to 12 words, using 132 bits of entropy. In the wizard, the type of the seed is displayed in the seed input dialog. • Add number of confirmations to request status. • In the GUI, refer to passphrase as ‘seed extension’. • Wizard: Hide seed options in a popup dialog. • Separate sign and broadcast buttons in Qt tx dialog • Allow spaces in private keys • Add size to transaction details window • Move plot plugin to main code • Merge exchange_rate plugin with main code • Faster synchronization and transaction creation • Use fee slider for static fees • Add fee slider to RBF dialog • Simplify fee preferences. • Add Testnet support • Allow daemon to be launched in the foreground • Qt: use separate tabs for addresses and UTXOs • Qt: update fee slider with a network callback • Enforce https on exchange rate APIs • Use hardcoded list of exchanges • Move ‘Freeze’ menu to Coins (utxo) tab • Wallet file encryption using ECIES: A keypair is derived from the wallet password. Once the wallet is decrypted, only the public key is retained in memory, in order to save the encrypted file. • The daemon requires wallets to be explicitly loaded before commands can use them. Wallets can be loaded using: ‘electrum-grs daemon load_wallet [-w path]’. This command will require a password if the wallet is encrypted. • Invoices and contacts are stored in the wallet file and are no longer shared between wallets. Previously created invoices and contacts files may be imported from the menu. • Fees improvements: — Child Pays For Parent (CPFP) dialog in the GUI. — RBF is automatically proposed for low fee transactions. • The GUI shows a blue icon when connected using a proxy. • Show paid invoices in history tab • Improve CPFP dialog • Multiple Chain Validation: Electrum-GRS will download and validate block headers sent by servers that may follow different branches of a fork in the Groestlcoin blockchain. Instead of a linear sequence,block headers are organized in a tree structure. Branching points are located efficiently using binary search. The purpose of MCV is to detect and handle blockchain forks that are invisible to the classical SPV model. • The desired branch of a blockchain fork can be selected using the network dialog. Branches are identified by the hash and height of the diverging block. Coin splitting is possible using RBF transaction • MultiGroestl, Groestlwallet, Simple Groestlcoin support: If the user enters a BIP39 seed, the full derivation path is configurable in the install wizard. • Option to send only confirmed coins • Qt GUI: — Network dialog uses tabs and gets updated by network events. — The gui tabs use icons • Daemon: The wallet password can be passed as parameter to the JSONRPC API. • Validate contacts on import • Command-line option for locktime • Force headers download if headers file is corrupted • Add websocket to windows builds • The project was migrated to Python3 and Qt5. Python2 is no longer supported. If you cloned the source repository, you will need to run “python3 setup.py install” in order to install the new dependencies. • Segwit support: — Native segwit scripts are supported using a new type of seed. The version number for segwit seeds is 0x100. The install wizard will not create segwit seeds by default; users must opt-in with the segwit option. — Native segwit scripts are represented using bech32 addresses, following BIP173. Please note that BIP173 is still in draft status, and that other wallets/websites may not support it. Thus, you should keep a non-segwit wallet in order to be able to receive groestlcoins during the transition period. If BIP173 ends up being rejected or substantially modified, your wallet may have to be restored from seed. This will not affect funds sent to bech32 addresses, and it will not affect the capacity of Electrum-GRS to spend these funds. — The BIP32 master keys of segwit wallets are serialized using new version numbers. The new version numbers encode the script type, and they result in the following prefixes: * xpub/xprv : p2pkh or p2sh * ypub/yprv : p2wpkh-in-p2sh * Ypub/Yprv : p2wsh-in-p2sh * zpub/zprv : p2wpkh * Zpub/Zprv : p2wsh These values are identical for mainnet and testnet; tpub/tprv prefixes are no longer used in testnet wallets. — The Wallet Import Format (WIF) is similarly extended for segwit scripts. After a base58-encoded key is decoded to binary, its first byte encodes the script type: * 128 + 0: p2pkh * 128 + 1: p2wpkh * 128 + 2: p2wpkh-in-p2sh * 128 + 5: p2sh * 128 + 6: p2wsh * 128 + 7: p2wsh-in-p2sh The distinction between p2sh and p2pkh in private key means that it is not possible to import a p2sh private key and associate it to a p2pkh address. • A new version of the Electrum-GRS protocol is required by the client (version 1.1). Servers using older versions of the protocol will not be displayed in the GUI. • By default, transactions are time-locked to the height of the current block. Other values of locktime may be passed using the command line. • Sweeping minikeys: search for both compressed and uncompressed pubkeys • Qt GUI: sweeping now uses the Send tab, allowing fees to be set • Windows: if using the installer binary, there is now a separate shortcut for “Electrum-GRS Testnet” • OS notifications for incoming transactions • Better transaction size estimation: — fees for segwit txns were somewhat underestimated — some multisig txns were underestimated — handle uncompressed pubkeys • The JSONRPC interface is password protected • JSONRPC commands are disabled if the GUI is running, except ‘ping’, which is used to determine if a GUI is already runningFeatures: • Encrypted wallet — the file that contains your groestlcoins is protected with a password. You are protected from thieves. • Deterministic key generation — If you lose your wallet, you can recover it from its seed. You are protected from your own mistakes. • Instant on — the client does not download the blockchain, it requests that information from a server. No delays, always up-to-date. • Freedom and Privacy — The server does not store user accounts. You are not tied to a particular server, and the server does not need to know you. • No scripts — Electrum-GRS does not download any script. A compromised server cannot send you arbitrary code and steal your groestlcoins. • No single point of failure — The server code is open source, anyone can run a server. • Transactions are signed locally — Your private keys are not shared with the server. You do not have to trust the server with your money. • Firewall friendly — The client does not need to open a port, it simply polls the server for updates. • Free software — Gnu GPL v3. Anyone can audit the code. • Written in Python — The code is short, and easy to review. • User Friendly — Support for Groestlcoin URIs, signed URIs and Groestlcoin aliases • No Lock-In — You can export your private keys and use them in other groestlcoin clients. • No Downtimes — Electrum-GRS servers are decentralized and redundant. Your wallet is never down. • Proof Checking — Electrum-GRS Wallet verifies all the transactions in your history using SPV. • Cold Storage — Keep your private keys offline, and go online with a watching-only wallet. Sign transactions from a computer taht is always offline. Broadcast them from a machine that does not have your keys. • Multisign — Split the permission to spend your coins between several wallets using parallel BIP32 derivations and P2SH addresses (“2 of 2”, “2 of 3”). Compact serialization format for unsigned or partially signed transactions, that includes the BIP32 master public key and derivation needed to sign inputs. Serialized transactions can be sent to cosigners or to cold storage using QR codes • Cosigner Pool plugin — encrypted communication channel for multisign wallets, to send and receive partially signed transactions. • Get noticed — Run a public Electrum-GRS server, publish your message and reach thousands of Groestlcoin usersElectrum-GRS for Android & BlackBerry UPDATETo go with the Electrum 3.0.6 multi-platform desktop release, comes updates to Electrum-GRS for Android and Blackberry too. This includes BIP-0032 and BIP-0039 which allows for the using of Non-Native and Native Segwit addresses which bring with it potentially lower and faster fees (As if we need that!). You’re also now able to request an amount when requesting a payment and the ability to spend your own unconfirmed ‘change’ from transactions. Along with that technical stuff, this update comes with a very welcome slight UI refresh and a good round of bug bustin’!Changelog Groestlcoin Electrum GRS v1.5.28: • Added testnet support and ability to switch between mainnet and testnet • Added support to receive from non native segwit address • Added more electrum-grs serversFeatures: • Exchange rates for various national currencies • Manual receiving address management (enable in settings) • Wallet only needs to be backed up once, on initial creation. • Wallet backup consists of simple list of 12 common words (BIP-0039). • Empty the wallet with 1 click • Automatic connectivity management with fast reconnects and detection of network change • Password protect your recovery phrase • Top security — Electrum-grs uses bank grade technology. Your money is kept safe by guaranteeing that your private keys will never leave your gadget. The user has absolute control • Warning if there are no connections to the Electrum-GRS servers • Click on any addresses to edit the label or copy it • Support payment URIs requests from browsers and other appsGroestlcoin Sentinel for Android & BlackBerry UPDATESentinel for Android and Blackberry has also been updated to v2.7.1 and brings the view-only wallet into the Segwit era. Allowing to track your Segwit wallets (paper included) all in one place. It brings more security with haptic PIN entry support and using HTTPS for the block explorers (of which there are now more than ever). A highly requested feature to be able to refresh your balances has also been included.Changelog v2.7.1: • Added refresh button • Groestlsight blockexplorer support • Haptic PIN entry support • Track Segwit BIP49 YPUBs • Sweep P2PKH and Segwit P2SH-P2WPHK amounts into selected account/address • Use https for blockexplorersFeatures: • Open source and unlicensed. • No Private Keys — Groestlcoin Sentinel only uses Public Keys. It never knows or never asks for your Private Keys. • Track multiple XPUB’s, YPUB’s or Addresses — Add multiple XPUB’s, YPUB’s or addresses to your Groestlcoin Sentinel Watchlist to keep track of balances, transactions, and accept payments into any added wallet or address. • Deterministically derives Groestlcoin Addresses — Deterministically derive new Groestlcoin addresses associated with your added wallets without needing access or knowledge to your private keys. • Shareable QR code — Create payment request QR codes with address and amount encoded directly into the image. Share with anyone or any app directly from Groestlcoin Sentinel. • The most popular Fiat currencies — Groestlcoin Sentinel can convert GRS to your local currency. Supported currencies are: USD, EUR, GBP, CNY and RUB • Exchanges — Groestloin Sentinel can pull the current Fiat price from Cryptopia and Bittrex. • Secure PIN Code protection — Add a secure PIN code to protect access to Groestlcoin Sentinel. Optionally turn on PIN Scramble to help thwart against keylogger attacks.Website UpgradeOur website went through an overall upgrade, new graphics and a faster loading time which match the speed of GRS transactions.COMMUNITY PROJECTSThe community has been hard at work with development projects this quarter, aiming to push Groestlcoininto new sectors.The community has been primarily focused on Gamers this quarter since Gaming has become a very large and tech-savvy industry it makes sense to target this market. However, there is a lot of stigma regarding cryptocurrencies with gamers, since mining has driven up the price of Graphics cards towards the end of 2017 and early 2018, the gaming community is, in a large part, quite split into the pros and cons of Cryptocurrency.We think there is some middle ground to resolve conflicts that gamers/streamers and cryptocurrency enthusiasts currently have.GROESTLTIP STREAMLABSStreamers are facing a huge issue with Paypal donations and that of chargebacks — It makes declaring their incomes all that more complicated along with knowing just how much you’re earning whilst streaming, and a whole host of other issues.The Groestlcoin community has developed a completely trust-less wallet-to-wallet donation system with the Streamlabs API. There is no third-party handling the transactions and makes the platform impossible to monetise via fees at a later date like some others are considering.Donating to streamers via a proof-of-work cryptocurrency, such as Groestlcoin, solves a lot of these existing issues.The transaction is instant and the network fees are almost zero (0,0001 $).1. There are NO chargebacks — Like donations should be. Once you receive your cryptocurrency, they are yours and cannot be refunded/charged back. This makes ALL donations SERIOUS donations.2. People who watch streamers historically tend to have gaming PCs with graphics cards, or high-powered processor to game themselves (With the exception of console gamers, I suppose). Also, whilst you’re watching streamers play their games, you aren’t likely to be using your graphics card to game.How great would it be to be able to watch your favourite streamers, whilst earning money that you can either keep or donate, without ever touching your bank account? The Groestlcoin community feels that this is a better and more secure way to earn and send cryptocurrency donations. You can mine Groestlcoin directly, or mine whatever is the most profitable for your hardware and convert it to Groestlcoin (NOTE: MiningPoolHub does this automatically if you enable it!).See in this article how GroestlTip works: https://medium.com/@groestlcoin/groestltip-groestlcoin-streamlabs-7edc4e255193GroestltipGithub: https://github.com/Groestlcoin/groestltip-streamlabsGroestltip Platform: https://groestltip.orgGRS X WALLET REVAMP AND REBRANDED TO VORTEXVortex is a multi-platform SPV light-wallet with a simplistic, minimal design language for newcomers to Cryptocurrency as well as Veterans who like a simple and sleek design. The wallet has been carefully engineered to not be confusing. All of the bloat and complexity has been stripped out to produce a simple and fast wallet.Here are the changes we’ve made to GRS X:Rebranded from GRSX to Vortex;Complete UI redesign, from the ground up:Main UI has been redesigned to be even simpler;More consistent design and coding style throughout the program (Easier to use AND maintain);Colour scheme moved to be in-line with the GroestlcoinEasyminer 2018;Added new Vortex Logo;Added the ability to save up to 7 GRS addresses as contacts in the ‘New Contacts’ section;Added transaction fee option when sending GRS (using mGro/Byte);Versioning system changed, add version title for each version too;Significant code enhancements for optimal performance, bugs squished and added the ability to change between Mainnet and Testnet.Github: https://github.com/groestlcoin/vortex Windows (x64): https://github.com/Groestlcoin/vortex/releases/download/v1.0.0/vortex_windows-x64_1_0_0.exe Mac OS: https://github.com/Groestlcoin/vortex/releases/download/v1.0.0/vortex_macos_1_0_0.dmg Linux: https://github.com/Groestlcoin/vortex/releases/download/v1.0.0/vortex_unix_1_0_0.shP2POOL RE-LAUNCHGroestlcoin is one of the only coins around that you can still solo-mine, this is THE most decentralised solution to mining, however, you can go days without any reward if you don’t have enough GPUs, so it isn’t practical for most. In an aid to further support and decentralise the Groestlcoin network, with the help of the developers, the community has updated the Groestlcoin P2Pool. People can now host P2Pool networks for people to mine on and can receive smaller, but more consistent rewards for mining. You can view a list of compatible pools here: http://grs-fr.catpool.io:8080 (More on that soon).P2Pool is basically a more decentralised pool. Rewards are shared among everyone who mines in the global pool whenever P2Pool finds a block. To learn how to create a node, please go here: https://groestlcoin.org/forum/index.php?topic=306.0. Hosting a node comes with the benefit of a block finder’s fee that you can set if your local pool generates a block and can be run alongside other coins P2Pools.Github: https://github.com/Groestlcoin/p2poolP2POOL NODE-SCANNERTo accompany the P2Pool relaunch, we have also updated the Node Scanner which is run alongside (or rather, on top of) the P2Pool node. This scans the network for other P2Pools and produces a list of nodes in an index.html page.Github: https://github.com/Groestlcoin/grs-scannerCOMMUNITY CREDITS:Video Edits:CryptoGinger/MoGinger for some beautiful promotional videos over the past few months:@CryptoGingerMichael Reynolds / MoGingermr3ynolds@googlemail.comTwitter — @GingerCryptoYoutube — @CryptoGingerGroestltip:Viva, DreadedZombie and Lephleg for working on the StreamlabsGroestltip, as well as pyrorca and realblankspace for testing the platform:DreadedZombie: http://github.com/joenilan, http://bitbucket.com/joenilan, Twitter -@joenilanViva: https://github.com/AugustG98, Discord — @Viva#8281RealBlankSpace: https://www.twitch.tv/realblankspacePyrorca: https://www.twitch.tv/pyrorcaP2Pool & P2Pool Node Scanner:Tanariel (Discord tanariel#4076) for running nodes and getting the P2Pool node scanner up and running.MadeOf_Tin (Discord Madeof_Tin#7509), Tiamo (Discord Tiamo#1675) and Steven0_0Smith (Discord Steven0_0Smith#0131) for all running nodes and reporting feedback.Also a special thanks to the owner of Suprnova for helping get P2Pool up and running on the more technical side.Vortex Wallet:Duudl3 — creator.Github: https://github.com/duudl3Discord: duudl3#9846COINOMI SUPPORTOne more thing that has been done within this 3 months, before release, is Groestlcoin being added to the third-party multi-wallet Coinomi. As a small team, we don’t take being added to third-party wallets lightly — We are fully aware that they are entirely out of our control if the wallet, for some reason, disappears. However, Coinomi is different, we have our own Electrum wallet that is fully compatible with Coinomi to recover your funds in such an event.You can now store your Groestlcoin securely on your mobile along with all your other cryptocurrencies that are supported there, this also paves the way forward to be being added to Shapeshift in the future.Note: We are very cautious with third-party wallets. In case anything ever happens to Coinomi, we have created a recovery tool so you can still access your funds in this event: https://groestlcoin.org/bip39-standalone.htmlNote 2: There is also an issue with the Coinomi wallet that generates invalid XPUB keys (extended public keys). We have given them the solution but are waiting for them to implement the fix.Note 3: The Coinomi Wallet is no longer open-source. Use this wallet at your own risk.FEATURES:Exchange rates for various national currenciesManual receiving address management (enable in settings)Wallet only needs to be backed up once, on initial creation.Wallet backup consists of a simple list of 12 common words (BIP-0039) — Compatible with our own Android Electum-GRS wallet.Empty the wallet with 1 clickAutomatic connectivity management with fast reconnects and detection of network changePassword protect your recovery phrasePrivate Keys never leave your device, you own your keys, always.Warning if there are no connections to the 122+ Electrum serversClick on any addresses to edit the label or copy itSupport payment URIs requests from browsers and other appsCOINOMI BETA:Support for BECH32 addresses. This adds support for Non-Native and Native Segwit addresses — Tab on ‘alternative address’ to toggle between legacy (prefixed with ‘F’), non-native Segwit (prefixed with ‘3’) and Native Segwit Addresses (prefixed with ‘grs1’).

Groestl

18. 03. 24

GroestlTip - Groestlcoin on...

GroestlTip [www.groestltip.org] is a tipping service /app for live video content, developed by the Groestlcoin community members.Unlike others, GroestlTip is a stand alone service /app that doesn’t rely on third parties to tip you favorite streamers. That means you won’t get charged by third parties.When tipping someone, you will only pay the Groestlcoin’s (GRS) blockchain transaction fee which is almost zero ($0.0001 per transaction /tip).On top of that, your payment will be instant. Streamers will receive the GRS coins instantaneous into their wallets.Who can benefit from this?Viewers /users can mine their tips. You can mine Groestlcoin (GRS) without special equipment. Most of the viewers have a decent graphic card that they can use to mine the tips for their favorite streamers.Streamers will receive a high-tech coin with huge growth potential. Right now Groestlcoin (GRS) is one of the most advanced cryptocurrency, but way undervalued for its capabilities. Keeping GRS for a few months will get them more value for their work.Groestlcoin (GRS) will be seen by tens of thousands of people that are tech oriented and opened to new technologies. This will get Groestlcoin (GRS) to a whole new market that can easily accept it as a future payment system, considering its instant transaction speed and almost zero fees.How it works?For VIEWERS /USERS:As a viewer /users, go to your favorite streamer who accepts GRS tips and click on the GroestlTip logo:2. You’ll be redirected to the streamer’s GroestlTip.org user page, where you will see all of his/her GRS donations. Click on “Click to Tip” button:3. In the new window you will be able to tip /donate with Groestlcoin (GRS) or PayPal. Click on “Tip with Groestlcoin (GRS)” button:4. An Groestlcoin (GRS) address will be generated. Scan the QR code with your Groestlcoin mobile wallet or copy the GRS address into your Groestlcoin desktop wallet. We recommand GroestlPay wallet.Choose the amount of GRS you want to donate and sent it from your wallet:Please note that the payment will only be tracked while this page is open, and you have a five minute time limit. If either the page gets closed, or five minutes elapses after you see the Groestlcoin address, please refresh the page to make a new payment request.5. After you’ll send the GRS tip, you’ll get the message that the payment was verified and you can check your transaction by click on the “history” link or the transaction id link.Watching the live stream you will also see the custom tip donation graphics and sounds :)The transaction is sent, verified and received in an instant.For STREAMERS:We made a 5 minute video tutorial about how to set up GroestlTip for your stream. Enjoy :)https://medium.com/media/69516f7765c17eaf695fb53a74866082/href

Groestl

18. 03. 23

Groestlcoin [GRS] vs Liteco...

Transaction Speed TestThe purpose of these tests are to compare the real world usability of various cryptocurrencies.Today we will test Groestlcoin [GRS] and Litecoin [LTC], but before we do that let’s take a look at tech specs and prices of both coins.06 Feb 2018 pricesIn this test we used Groestlpay wallet for Groestlcoin and LoafWallet for Litecoin.Groestlpay WalletGroestlpay wallet is a multi-platform (Windows, Mac, Linux, Android, iOS, Web, Chrome OS) wallet, making Groestlcoin one of the 8 coins that have their own wallets on App Store.You can use Groestlpay on all those platforms, make instant and secure payments with subAtomic fees ($0.0001 per transaction) and share it with your friends and family thanks to the multi-signature feature (funds are spent after the transaction has the required number of signatures).You can also store multiple sub-wallets and add your favourite contacts to them for quick and easy transactions (you’ll see that in the video below).LoafWalletLoafWallet is the Android and iOS wallet for Litecoin, developed by Litecoin Foundation. It’s a quick wallet, but needs some updates and new features.The most frustrating problem was the constant “syncing” part. After crash, the app it has to resync everytime.The problem appears after a various number of transactions when you need to sync your wallet, again and again, sometimes it even stops working and the wallet crashes or you get the error “Transaction Rejected” (check out the Litecoin video).This problem was already reported here: https://github.com/litecoin-foundation/loafwallet-android/issues/37People also reported 15 more problems here: https://github.com/litecoin-foundation/loafwallet-android/issuesLoafwallet needs many bugfixes to make it more user-friendly.Let’s see how each wallet handles the transactionsWe made 20 transactions back and forth as quickly as we could. We are only showing 5 transactions due to the video length. For this test we used 2 Android phones.Groestlcoin wallet ○ GroestlpayWe scanned both wallet addresses and saved them as “wallet 1” and “wallet 2” to contacts for quick payments.https://medium.com/media/c88b30d909f9ffd119c4561e901338b4/hrefThe transactions are instant and you can spend your received GRS immediately. The receiving message has a little delay and that’s why we’ve refreshed the wallet manually. This will be fixed on a future update.Litecoin wallet ○ LoafWalletWe copied both wallet addresses to clipboard and paste them every time we made a transaction for quick payment.https://medium.com/media/c7e97f93bbce6c82306eb07df3fbd79d/hrefThe Litecoin wallet is almost as fast as Groestlcoin wallet, but we encountered some problems as showed in the video below. Sometimes you can’t use the receiving funds immediately and it can take significant time until you can use your funds again. Until then, your funds are stucked.https://medium.com/media/bca7d46492de0cbe854015d9dcccd8b9/hrefWallet fees for sending 25$Groestlpay [GRS] = 0.000193 GRS = $ 0.0001 (current GRS price $0.6)LoafWallet [LTC] = 0.0013 LTC = $ 0.2 (current LTC price $154)As you can see Groestlpay is ready for everyday use in real-world situations. Instant transactions, almost zero fees and many cool features, making this wallet perfect for you and your family.

Groestl

18. 02. 09

GRS Quick & Easy Mobile Pay...

Do you have a shop? Do you accept cryptocurrencies? Here’s how easy you can do it with Groestlcoin [GRS].Scan the address you want to pay and the GRS amount in the same QR code. This means fast transactions between customers and shops. It will take a few seconds to pay your bill.Generate the QR codeuse any QR code generator to create a QR code from plain text;the text should look like this: groestlcoin:FqkPKgvb2jFv6GdVphgyVY2iFPcHHi3dx7?amount=20.55FqkPKgvb2jFv6GdVphgyVY2iFPcHHi3dx7 — is the address you want to send/pay (customer) / receive (shop) GRS20.55 — is the amount of GRS you want to send/pay (customer) / receive (shop)It works with every Groestlcoin wallets!Online QR code generator: https://www.the-qrcode-generator.com Chrome extension: https://chrome.google.com/webstore/detail/the-qr-code-generator/gcmhlmapohffdglflokbgknlknnmogbbQR code generator app for shops/stores: http://www.shop2mobi.comShops can use QR apps that automatically generate QR codes for products and shopping cart. You can also print receipt with the QR code on it.Scan the QR code and pay within seconds!All you need to do now is scan the QR code and press SEND. You’ll pay your bill or send GRS in a few seconds.The transaction will take between 1 and 3 seconds. Here you can find 2 examples:body[data-twttr-rendered="true"] {background-color: transparent;}.twitter-tweet {margin: auto !important;}Paying for London Taxi with #Groestlcoin $GRS within seconds! Check this video made by @BoardDavid about @CryptoCabby accepting #Groestlcoin $GRS as payment! #SEGWIT #LightningNetwork #ASIC #resistant #cryptocurrency #blockchain #technology #transactions #payment #trading https://t.co/EhVCNh3VtW — @GroestlcoinTeamfunction notifyResize(height) {height = height ? height : document.documentElement.offsetHeight; var resized = false; if (window.donkey && donkey.resize) {donkey.resize(height);resized = true;}if (parent && parent._resizeIframe) {var obj = {iframe: window.frameElement, height: height}; parent._resizeIframe(obj); resized = true;}if (window.location && window.location.hash === "#amp=1" && window.parent && window.parent.postMessage) {window.parent.postMessage({sentinel: "amp", type: "embed-size", height: height}, "*");}if (window.webkit && window.webkit.messageHandlers && window.webkit.messageHandlers.resize) {window.webkit.messageHandlers.resize.postMessage(height); resized = true;}return resized;}twttr.events.bind('rendered', function (event) {notifyResize();}); twttr.events.bind('resize', function (event) {notifyResize();});if (parent && parent._resizeIframe) {var maxWidth = parseInt(window.frameElement.getAttribute("width")); if ( 500 < maxWidth) {window.frameElement.setAttribute("width", "500");}}body[data-twttr-rendered="true"] {background-color: transparent;}.twitter-tweet {margin: auto !important;}Wonderland SF purpose of discovering and aiding Bay Area fashion designers, painters, photographers excepts Groestlcoin (GRS) @GroestlcoinTeam $GRS #Groestlcoin #LightningNetwork #SEGWIT #subATOMICfees #blockchain #payment #crypto #digitalcash #PrivateTransactions @hernandezfeiks https://t.co/GQLBHmPtZH — @houstonberryfunction notifyResize(height) {height = height ? height : document.documentElement.offsetHeight; var resized = false; if (window.donkey && donkey.resize) {donkey.resize(height);resized = true;}if (parent && parent._resizeIframe) {var obj = {iframe: window.frameElement, height: height}; parent._resizeIframe(obj); resized = true;}if (window.location && window.location.hash === "#amp=1" && window.parent && window.parent.postMessage) {window.parent.postMessage({sentinel: "amp", type: "embed-size", height: height}, "*");}if (window.webkit && window.webkit.messageHandlers && window.webkit.messageHandlers.resize) {window.webkit.messageHandlers.resize.postMessage(height); resized = true;}return resized;}twttr.events.bind('rendered', function (event) {notifyResize();}); twttr.events.bind('resize', function (event) {notifyResize();});if (parent && parent._resizeIframe) {var maxWidth = parseInt(window.frameElement.getAttribute("width")); if ( 500 < maxWidth) {window.frameElement.setAttribute("width", "500");}}Download Groestlpay wallet here:Android, iOS, BlackBerry, Chrome OS, Web, Windows, Mac, LinuxGroestlpay wallet * Groestlcoin (GRS)

Groestl

18. 01. 27

What is Groestlcoin backed by?

Here are some of the features that make Groestlcoin special:First coin with SegWit. Groestlcoin is a blockchain pioneer by being the first coin that activated SEGWIT in January 2017.Enabling Lightning Network, Groestlcoin gets almost ZERO fee transactions, instant payments, scalability and Atomic Swaps.Extremely low fees. The fee for transferring 10,000 GRS is 0.000045 GRS.The only coin capable of being sent over SMS.Continuous development! Every 3 months our developers team release new features and updates.The only coin that has succesfully ported Bitcoin Armory.The only coin that has over 80 Electrum servers.One of the few coins that has an Ubuntu PPA available.One of the few coins that is officially maintained by the Bitcoin Debian packaging team.The only coin that has succesfully ported Multibit HD.We have 11 different Android wallets. Most struggle to have just 1.We have 10 different Blackberry wallets. Most don’t have any.We have 3 different iOS wallets.We have over 10 different desktop wallets.The only coin that has ported Samourai and thus succesfully implemented BIP147. You can work with payment channels with Groestlcoin.One of the few coins where you can play with OP_HOLD, RBF and other new features.The only coin that has ported Electrum client to Java.One of the few coins that has ported Rushwallet.com.The only coin with over 100 repositories of developed work.The only coin that has wallets which can use NFC tags as encryption key.The only coin that has ported Msigna.The only coin that has ported Sentinel.The only coin that is still being compiled with Visual Studio (like Satoshi himself did).One of the few altcoins that have a working testnet.One of the few altcoins that are hosting their own block explorer.One of the few altcoins that even have wallets for testnet.The only altcoin that has ported Libbitcoin to Groestlcoin.One of the few altcoins that are keeping their Core wallet up to date.Asic resistant. A GPU Miner’s Heaven which makes the mining distribution of this coin fairer and more even, to help prevent the centralization of our coin.Multipool resistant. Basically makes it far less likely for a fork to be stuck in the coin creating all sorts of anomalies and problems.For more development achievements, access the Development Progress page and Groestlcoin’s GitHub.

Groestl

18. 01. 08

Security verification

There is security verification of the project
Why security verification is necessary?

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Information
Platform ERC20
Accepting
Hard cap -
Audit -
Stage -
Location -