Another Quarter, Another Release! The Groestlcoin production factory has been working overtime as always in order to deliver even more tech to push Groestlcoin mainstream when the time comes.
There have been many new fantastic wallets and exchanges added to Groestlcoins repertoire over the past 3 months so we will re-cap these before moving on to what is new today.
Recap of the past 3 months:
- Groestlcoin added to SatWallet – A 3-in-1 service. Multicurrency wallet, exchange and soon a debit card!
- ChangeHero announced a week of 0% commission for Groestlcoin trades.
- Added to BC Bitcoin cryptocurrency exchange, offering 8 fiat pairs!
- Added to Chameleon Pay mobile wallet for Android and iOS!
- Added to the Hong Kong cryptocurrency exchange; CoinAll! Offering BTC and ETH pairs! With a 21,5000 GRS Giveaway!
- Added to Spark Card! Our second MasterCard for Groestlcoin! Provided by Pungoio, powered by TarjetaSpark and issued by Mastercard!
- Added to Swirlpay! A decentralised peer-to-peer payment gateway.
- Added to Archos Safe-T Mini hardware wallet! Built around encrypted Chipset memory.
- Added to Agama Wallet – A multi-asset encrypted wallet for iOS, Android, Windows, Mac OS and Linux from Komodo.
- Added to Mr Coin exchange, with 2 fiat pairs (EUR and HUF)
- Added to CryptoFacil Exchange – An exchange powered by Bittrex and is a fiat gateway. Leaving you with the ability to buy GRS with Visa and Mastercard.
- Added to Bits Game – A gambling service with 2 ‘PvP’ games
- Added to Boost X Change Cryptocurrency exchange!
- Added to Sucon’s Suworld Korean cryptocurrency exchange!
- Added to DCXinsta cryptocurrency exchange and swap service with Fiat pairings.
- Added to DCXtrade, an Indian cryptocurrency exchange with BTC and ETH pairings.
- Added a fiat KRW pairing on Huobi Korea Cryptocurrency Exchange!
- Added to AirGap wallet, allowing you to securely store your GRS on an offline device.
- Added as a payment method on hodlhodl, allowing you to make global trades without KYC/AML.
- Added to Circle of Trust cryptocurrency wallet for iOS and Android
- The existing Magnum wallet adds SegWit support for the wallet! Allowing SegWit addresses to be used and created from within the wallet.
- Added to CycleBit – Who provide POS Terminals that accept GRS payments anywhere, in-store and online. 130 coffee houses in Spain already accept GRS using Cyclebit POS terminals!
- Added to Bitinka Cryptocurrency exchange! The #1 exchange in Latin America with 5 fiat and cryptocurrency pairs!
- Added to Atomic wallet, a non-custodial cryptocurrency wallet with encrypted private keys and 40,000 monthly users.
- Added to NoMiddleMan cryptocurrency payment gateway, offering no usernames, no registration, no KYC, no fees. Completely free to use!
- Added to Blockchair! An advanced data analysis tool, mempool monitor and block explorer!
- Added to SecuX V20, SecuX W20 and SecuX W10 hardware wallets!
Here's what's new today
GROESTLCOIN DEVELOPMENT RELEASE
Re-forged: Groestlcoin Samourai v0.98.86.3
Groestlcoin Samourai is a wallet for the streets. A modern Groestlcoin wallet hand-forged to keep your transactions private, your identity masked, and your funds secure. Its main advantages are its extreme portability and is the most secure Groestlcoin mobile HD wallet.
We’ve built a wallet that Groestlcoin deserves. If you are looking for a wallet that Silicon Valley will never build, the regulators will never allow, and the VC’s will never invest in, this is the perfect wallet for you.
Features
For a full list of features of Groestlcoin Samourai head over to the Groestlcoin Samourai page here
Changes:
- PayNym may now use Segwit addresses
- Offline mode
- PayNym address calculation tool
- Updated transaction sequence – compose-sign-broadcast
- Display wallet values by address type
- Full BIP84/BECH32 support
- STONEWALL spend support – Break the assumptions of blockchain analysis with mathematically provable doubt between sender and the recipient of your transactions. We provide increased doubt linking the inputs and outputs of a transaction. Most Groestlcoin wallets leave a trail of metadata on the blockchain that surveillance firms use to deanonymize you. STONEWALL automatically helps guard against address clustering and other deanonymization attacks. Turn the tables on surveillance firms by using the same caliber tools they use
- Ricochet 2.0 multi-hop spend. A free tool that adds extra hops of history to your transactions. Stump the blacklists and help guard against unjust third-party account closures. Centralised services suspend users and lock funds based on bogus blacklists and reports published by Blockchain Analytic companies. These companies scan the history of the past 4 transactions associated with the incoming addresses. Your coins can be frozen for their past activity – Even if they weren’t in your control at the time. Richochet doesn’t solve the problem of blacklists but it does prevent a means of attacking the way spies build those blacklists. The wallet broadcasts the last transaction to the final destination with the correct value
- Added the ability to sweep BIP84 (Bech32) and BIP49 (P2SH-P2WPKH) private keys
- Displays YPUB of BIP49 account, ZPUB of BIP84 accounts
- Added BlockBook block explorer
- Batch Send – Batch transactions throughout the day to save on transaction fees. Make one large batch transaction instead of multiple small transactions
- Improved fee selection and display
- Optional setting: like-typed outputs (better privacy) vs all SegWit outputs (lower fees)
- Block UTXO of non-broadcast transactions
- Push any signed transaction (Hex Format) via ‘Broadcast transaction Hex’ in Settings
- Sign messages with Segwit (P2SH-P2WPKH). SegWit transactions are more efficient than other legacy transaction types. With SegWit enabled by default, you will pay less in miner fees when transacting with Groestlcoin Samourai Wallet and benefit from cheaper transactions
- Balance & UTXO Support via Chainz backend API
- New metadata format
- Improved wallet recovery in the User Interface
- Custom fee lower limit now 20 gro/b
- Sign transaction messages with any UTXO private key
- Add Upbit as street price
- Updated launch icon
- Updated splash screen
- Optionally show privkey of UTXO
- CPFP (child-pays-for-parent) for unconfirmed sent and/or received transactions
- Display static fees
- Allow custom fee on spend
- Spend via preferred trusted full node
- UTXO list
- Dynamic fee for BIP47 notif transaction
- Use updated Orbot
Links
Google Play Store – NOTE: This version does not support Stealth and Remote functions which were disallowed by Google. To Enable these features, you will need to manually download and install the APK version which you can do from within the app, or through the link below.
APK – This version fully supports Stealth and Remote functions but will need to be manually updated to new versions as they are released. The genuine app can be verified through file size and SHA256 checksum here.
Source Code
https://github.com/Groestlcoin/groestlcoin-samourai-wallet-android
Newly forged: Groestlcoin Samourai Testnet
Groestlcoin Samourai Testnet is a wallet for the streets. A modern Groestlcoin wallet hand-forged to keep your transactions private, your identity masked, and your funds secure. Its main advantages are its extreme portability and is the most secure Groestlcoin testnet mobile HD wallet.
We’ve built a wallet that Groestlcoin Testnet deserves. If you are looking for a wallet that Silicon Valley will never build, the regulators will never allow, and the VC’s will never invest in, this is the perfect wallet for you.
Features
For a full list of features of Groestlcoin Samourai Testnet head over to the Groestlcoin Samourai Testnet page here
New Features
- PayNym may now use Segwit addresses
- Offline mode
- PayNym address calculation tool
- Updated transaction sequence – compose-sign-broadcast
- Display wallet values by address type
- Full BIP84/BECH32 support
- STONEWALL spend support – Break the assumptions of blockchain analysis with mathematically provable doubt between sender and the recipient of your transactions. We provide increased doubt linking the inputs and outputs of a transaction. Most Groestlcoin wallets leave a trail of metadata on the blockchain that surveillance firms use to deanonymize you. STONEWALL automatically helps guard against address clustering and other deanonymization attacks. Turn the tables on surveillance firms by using the same caliber tools they use
- Ricochet 2.0 multi-hop spend. A free tool that adds extra hops of history to your transactions. Stump the blacklists and help guard against unjust third-party account closures. Centralised services suspend users and lock funds based on bogus blacklists and reports published by Blockchain Analytic companies. These companies scan the history of the past 4 transactions associated with the incoming addresses. Your coins can be frozen for their past activity – Even if they weren’t in your control at the time. Richochet doesn’t solve the problem of blacklists but it does prevent a means of attacking the way spies build those blacklists. The wallet broadcasts the last transaction to the final destination with the correct value
- Added the ability to sweep BIP84 (Bech32) and BIP49 (P2SH-P2WPKH) private keys
- Displays YPUB of BIP49 account, ZPUB of BIP84 accounts
- Added BlockBook block explorer
- Batch Send – Batch transactions throughout the day to save on transaction fees. Make one large batch transaction instead of multiple small transactions
- Improved fee selection and display
- Optional setting: like-typed outputs (better privacy) vs all SegWit outputs (lower fees)
- Block UTXO of non-broadcast transactions
- Push any signed transaction (Hex Format) via ‘Broadcast transaction Hex’ in Settings
- Sign messages with Segwit (P2SH-P2WPKH). SegWit transactions are more efficient than other legacy transaction types. With SegWit enabled by default, you will pay less in miner fees when transacting with Groestlcoin Samourai Wallet and benefit from cheaper transactions
- Balance & UTXO Support via Chainz backend API
- New metadata format
- Improved wallet recovery in the User Interface
- Custom fee lower limit now 20 gro/b
- Sign transaction messages with any UTXO private key
- Add Upbit as street price
- Updated launch icon
- Updated splash screen
- Optionally show privkey of UTXO
- CPFP (child-pays-for-parent) for unconfirmed sent and/or received transactions
- Display static fees
- Allow custom fee on spend
- Spend via preferred trusted full node
- UTXO list
- Dynamic fee for BIP47 notif transaction
- Use updated Orbot
Links
Google Play Store – NOTE: This version does not support Stealth and Remote functions which were disallowed by Google. To Enable these features, you will need to manually download and install the APK version which you can do from within the app, or through the link below.
Test-net APK – This version fully supports Stealth and Remote functions but will need to be manually updated to new versions as they are released. The genuine app can be verified through file size and SHA256 checksum here.
Source Code
https://github.com/Groestlcoin/groestlcoin-samourai-wallet-android
ELECTRUM-GRS v3.3.6
Electrum-GRS is Groestlcoins #1 thin-client for Windows, MacOS, Linux and Android, based on a client-server protocol. Supporting multi-sig wallets without the bloat of downloading the entire blockchain.
If you are an ordinary user of Groestlcoin and simply want the convenience of a web wallet with the security of a real application and support for multi-signature, then Electrum-GRS is the right choice for you.
Electrum-GRS continues to stay up-to-date with the latest versions, with an update from 3.3.4 to 3.3.6.
Changes:
-
- Electrum Protocol: The client’s “User Agent” has been changed from “3.3.6” to “electrum/3.3.6”. Other libraries connecting to servers can consider not “spoofing” to be Electrum
- Added CoinGecko.com fiat rate provider. Changed default provider to CoinGecko.com
- Minor bugfixes and usability improvements.
- Fix Crash during 2FA wallet creation
- Fix Synchroniser so that it does not keep resubscribing to addresses of already closed wallets.
- Fix removing addresses/keys from imported wallets
- The logging system has been overhauled. Logs can now also optionally be written to disk, disabled by default.
- Fix a bug in the synchroniser where client could get stuck. Also show the progress of history sync in the GUI.
- Fix Revealer in Windows and MacOS binaries
- Coin Control in QT – Implemented freezing individual UTXOs in addition to freezing addresses
- Fix CPFP – The fees already paid by the parent were not included in the calculation, so it was always overestimated.
- Testnet – There is now a warning when the client is started in testnet mode as there were several reports of users getting scammed through social engineering.
- CoinChooser – Performance of creating transactions has been improved significantly for larger wallets.
- Importing/Sweeping WIF keys: Stricter checks
- Several other minor bugfixes and usability improvements.
- Hardware Wallets:
- Ledger Nano X is now recognised, supporting mainnet and testnet
- KeepKey
- KeepKey is now recognised and supports mainnet and testnet
- Device was not getting detected using Windows binary
- Support Firmware 6.0.0+
- Trezor
- Implement “Seedless” mode
Link
https://github.com/Groestlcoin/electrum-grs/releases/download
Source Code
Electrum-GRS Android v3.3.6
Electrum-GRS Android is the mobile equivalent to Electrum GRS 3.3.6, featuring the same benefits of Electrum-GRS over the standard core wallet, but on a mobile. You can restore your private keys generated on the Desktop Electrum seamlessly on the mobile equivalent.
NOTE: This is not to be confused with Electrum-GRS Android & Blackberry v.1.5.29 which was a fork of Coinomi (before they went closed-source). This version has now been rebranded to GroestlCoinomi to reflect this. GroestlCoinomi will continue to work but is now deprecated, so it is advised to move to another wallet if you are using this.
Changes:
- Fix rare crash when changing exchange rate settings
- Fix bug with local transactions
- Allow selecting Fiat Rate providers without historical data
- Electrum Protocol: The client’s “User Agent” has been changed from “3.3.6” to “electrum/3.3.6”. Other libraries connecting to servers can consider not “spoofing” to be Electrum
- Added CoinGecko.com fiat rate provider. Changed default provider to CoinGecko.com
- Minor bugfixes and usability improvements.
Link
https://play.google.com/store/apps/details?id=org.groestlcoin.electrumgrs
Source Code
GroestlImage
Groestlimage turns any file into a mnemonic phrase allowing users to generate Groestlcoin private keys and addresses based on the data URI of the provided file. A picture is worth a thousand Groestls.
Features:
- Turn any image, document or audio file into a BIP39 mnemonic phrase
- Add a BIP39 Passphrase
- Open source under MIT
Link
https://groestlcoin.org/groestlimage/
Source Code
Groestlcoin Core Config Generator
Groestlcoin Core Config Generator is a simple GUI to configure the groestlcoin.conf file – A developers dream tool!
Each configuration option is available via the user interface, grouped by what attributes they affect. For ease of getting started with a new configuration, a variety of preset “node classes” are available on the right-hand-side of the screen. Selecting a preset will load our recommended base configuration for a node fitting that description, at which point you can then tune the configuration at the single option level.
Features:
- Choose between Mining, Non-Standard Ports, Low Bandwidth, Pruned, Raspberry Pi, Tor, Testnet, Regtest, Non-Syncing and Lightning Éclair presets.
- Open-Source under GPL
- 140 Configuration options to choose from
Link
https://config.groestlcoin.org/
Source Code
https://github.com/Groestlcoin/groestlcoin-core-config-generator
Groestlcoin Dumb Block Explorer
Dumb Block Explorer is a trivial block explorer written in a single PHP file. Now everybody can run their own block explorer.
Features:
- Search for a hash or block height
- Option to show RAW Json for transactions
- Supports Mainnet and Testnet
- Works with Groestlcoin Core with enabled REST interface (-rest)
- Works with or without txindex
- Works with pruning
- Does UTXO lookups
Link
https://www.groestlcoin.org/explorer/
Source Code
Groestlcoin SMS Push Tx
Groestlcoin Simple Push TX is a server to push Groestlcoin transactions via SMS. Now everybody can send new transactions via SMS if the Internet is not usable (i.e. blocked by government entities or becomes otherwise unavailable).
Features:
- Ability to push either Base64 or Hex-Encoded Raw Transactions via SMS.
- Send SMS transactions to PushTX through the number +32460224477 (+32460224GRS)
Source Code
https://github.com/Groestlcoin/smspushtx