Topic: [ANN][GRS] Groestlcoin | 1st to activate Segwit | Building Lightning Network - page 5. (Read 558212 times)

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GRSPay is a non-custodial invoicing system which eliminates the involvement of a third-party. Payments with GRSPay go directly to your wallet, which increases the privacy and security. Your private keys are never uploaded to the server. There is no address re-use, since each invoice generates a new address deriving from your xpubkey or zpubkey.

GRSPay is available at https://grspay.com
https://www.youtube.com/watch?v=c7s3zZnlQ6M

https://www.youtube.com/watch?v=qNMTDEPhWhY

Changelog v1.6.9.0
• New features:
   - Dashboard: Add Lightning balances and easy access to lightning services.
   - Dashboard: Add Point Of Sale data.
   - Greenfield: Basic API Get and Delete operations for apps.
   - Greenfield: Add Lightning balance endpoint.
   - Greenfield: Allow excluding unconfirmed UTXOs when creating a new transaction.
   - Checkout: Public invoice's receipt.
   - Can disable TLS certificate check for email servers.
   - Can add sender's name to any field accepting an email destination, for example Satoshi Nakamoto <[email protected]> rather than just [email protected].
   - Support LNURL Withdraw in payouts.
   - Can send parametized emails based on invoice events.
   - Dashboard: Added toggle button to switch to store default currency.
   - Support Lightning node connection string with onion addresses.
   - Add Refunds list to Invoice details page.
   - Point of Sale: Add discount option for Keypad view.
   - Edit Pull Payment UI.
   - Custodian Account Deposit UI.
• Bug fixes:
   - UI: Fix cancel plugin command.
   - Crowdfunding: Fix the links for the default Quake sounds.
   - UI: Fix nav height issue on mobile devices.
   - UI: Fix mark all notifications as seen return URL.
   - UI: When disabling a user, then it as an admin, attempting to remove or enable the user would fail while showing success in the UI.
   - Deleting an admin gives a 500 error, and cannot disable the same user.
   - Dashboard: Do not display archived invoices in recent invoices.
   - Error happening when broadcasting transactions weren't shown in the UI.
   - If LNURL for standard invoice was disabled, and PoS print view used, the QR code would throw error 404.
   - Fix: Cannot withdraw refund (payouts) with LNURL.
   - Fix: Cannot withdraw refund (payouts) with LN Address.
   - Fix: Missing pager in the wallet transaction list.
   - Fix: webhook "Send specific events" display issue.
   - When a payjoin label was applied, coin selection filter would not work.
   - When a payjoin happened with a receive address wallet, the payjoin label was not applied.
   - Crowdfund: Show free when invoice is fixed and 0 amount in apps.
   - Crowdfund: Animations on crowdfund not enabled broke JS.
   - Crowdfund: Perk expansion in crowdfund was broken.
   - Redirect instead of show 404 on 0 amount invoices.
   - Minor checkout UI fix.
   - Greenfield: Update webhook would reset the secret.
   - Make InvoicePaymentSettled return correct afterExpiration value.
   - Greenfield: Allow tagging a transaction even if it hasn't been yet broadcasted.
   - Ensure payout processors update state.
   - Fix edge cases around LNURL not providing invoice.
   - Fix store creation button distortion.
   - Fix payout labels.
   - Handle hold invoices in ln payouts.
   - Save preimage of ln payouts when possible.
   - Fix crash on stores that had configured a payment method that is no longer supported.
   - Fix Wallet Transactions screen not loading in case of older payout labels.
   - Fix missing route hints for LNURL.
   - Fix API Docs url.
   - Fix Pay button logo and url.
• Improvements:
   - Don't show "Set up a Lightning node" when LN is not supported.
   - Redirect to invoice details instead of list upon creation.
   - Better UI/UX for on-chain send and receive.
   - Add refund badge to invoice lists.
   - Creating and editing a payment request now redirect to the payment request list.
   - Crowdfunding: Several UI/UX improvement for the settings.
   - Improve the refund flow.
   - Improve email settings validation and UX.
   - Add spam rate limits for public invoice endpoints.
   - Greenfield doc: Adding description to speedPolicy parameter.
   - UI: Improvement of Crowdfund & PoS Modal.
   - Server Settings: Consolidate Storage and Files.
   - Move View action to the Name column in Payouts & Payment Requests.
   - UI: Properly report Shopify errors when testing new settings.
   - Mobile header improvements.
   - Notification modal improvements.
   - Improve payouts UI.
   - Update language to explicitly request view-only wallet files.
   - Open public app views in new tab/window.
   - Added HRF and Strike to the list of supporters.
   - Invoice summary: Fix indentation and heading levels.
   - A few design brush up.
   - Coin Selection: Fix responsive display.
   - Point of Sale: In the receipt, the Order Id is now a link pointing to the point of sale.
   - The invoice filter dropdown list labels should be "Settled invoice" rather than "Paid invoice".
   - If a webhook is the loopback address, skip SSL verification.
   - Add no rate found error message in Invoices.
   - Greenfield API docs improvements.

Features
• Direct, P2P Groestlcoin payments
• Lightning Network support
• Complete control over private keys
• Enchanced privacy
• SegWit support
• Process payments for others
• Easy-embeddable Payment buttons
• Point of sale app
• No transaction fees (other than those for the crypto networks)
• No processing fees
• No middleman
• No KYC
• The software is built in C#
• You can run GRSPay as a self-hosted solution on your own server or use our host. The self-hosted solution allows you not only to attach an unlimited number of stores but also become the payment processor for others.
• Open Source - MIT license

This application is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Source code: https://github.com/Groestlcoin/btcpayserver

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Core lightning is a lightweight, highly customizable and standard compliant implementation of the Lightning Network protocol.
Core lightning only works on Linux and Mac OS, and requires a locally (or remotely) running groestlcoind (version 2.16.0 or above) that is fully caught up with the network you're testing on.

Changelog 0.12.0
• NEW Built-in bookkeeper plugin! This plugin tracks all movements of msats for your node, gives you a better idea of your costs and revenues, prints out CSVs that are uploadable to Koinly and CoinTracker, lets you inspect the on-chain footprint of a channel (useful when it goes to chain). Check out the new bkpr- prefixed commands.
• NEW Built-in commando plugin! This lets you create runes to allow access to your node from a commando client, which will let you send and receive RPC commands over the lightning network.
• NEW Emergency channel backup ("static backup")! Keep track of what peers you have channels with, and in case of node failure ask those peers to close the channel.
• NEW zeroconf channels are possible for whitelisted peers.
• hsmtool has a new command, checkhsm, which will let you check a BIP30 passphrase against the hsm_secret.
• Multiple log-file options will open multiple files for logging.
• Various crashes and issues fixed in connectd including crash on peer reconnect and large memory usage when many concurrent peers.
• PSBT: fixes signature encoding to comply with BIP-0174.
• We added dynamically detected public IP addresses to getinfo.
• Due to dependency issues on some platforms, a tarball of pre-generated manual pages is included with this release.

Features
• Creating channels.
• Closing channels.
• Completely managing all channel states (including the exceptional ones!).
• Performing path finding within the network, passively forwarding incoming payments.
• Sending outgoing onion-encrypted payments through the network.
• Automatic channel management (autopilot).

This application is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Ubuntu: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-build-on-ubuntu
Fedora: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-build-on-fedora
OpenBSD: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-build-on-openbsd
OSX: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-build-on-macos
Arch Linux: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-build-on-arch-linux
Raspberry Pi: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-cross-compile-for-raspberry-pi
Armbian: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-compile-for-armbian
Alpine: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-compile-for-alpine

Source code: https://github.com/Groestlcoin/lightning

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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.

Changelog 4.3.1
• Kivy GUI:
   - fix "Child Pays For Parent" not working on Android.
   - revert to defaulting the UI language to English.
   - bring kivy request dialog more in-line with Qt.
   - kivy: fix deleting "local" tx from history.
   - kivy: fix paying amountless LN invoice.
   - kivy: dust-valued requests could not be created for LN.

Features
• 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 that 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

This application is licensed under the GPL version 3. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Important:
Store your secret phrase somewhere safe!
The multi-signature and non native segwit addresses starts with a "3" and not with a "F".

Electrum-GRS is available in the Google play store:
https://play.google.com/store/apps/details?id=org.groestlcoin.electrumgrs

Source code:
GitHub Source server: https://github.com/spesmilo/electrumx
Github Source server installer: https://github.com/Groestlcoin/electrumx-grs-installer
Github Source client: https://github.com/Groestlcoin/electrum-grs

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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.

Changelog 4.3.1
• This version introduces a set of UI modifications that simplify the use of Lightning. The idea is to abstract payments from the payment layer, and to suggest solutions when a lightning payment is hindered by liquidity issues:
    - Invoice unification: on-chain and lightning invoices have been merged into a unique type of invoice, and the GUI has a single 'create request' button. Unified invoices contain both a lightning invoice and an onchain fallback address.
    - The receive tab of the GUI can display, for each payment request, a lightning invoice, a BIP21 URI, or an onchain address. If the request is paid off-chain, the associated on-chain address will be recycled in subsequent requests.
    - The receive tab displays whether a payment can be received using Lightning, given the current channel liquidity. If a payment cannot be received, but may be received after a channel rebalance or a submarine swap, the GUI will propose such an operation.
    - Similarly, if channels do not have enough liquidity to pay a lightning invoice, the GUI will suggest available alternatives: rebalance existing channels, open a new channel, perform a submarine swap, or pay to the provided onchain fallback address.
    - A single balance is shown in the GUI. A pie chart reflects how that balance is distributed (on-chain, lightning, unconfirmed, frozen, etc).
    - The semantics of the wallet balance has been modified: only incoming transactions are considered in the 'unconfirmed' part of the balance. Indeed, if an outgoing transaction does not get mined, that is not going to decrease the wallet balance. Thus, change outputs of outgoing transactions are not subtracted from the confirmed balance. (Before this change, the arithmetic values of both incoming and outgoing transactions were added to the unconfirmed balance, and could potentially cancel each other.)
• Exchange
   - Added Coinbase exchange
   - Removed Binance exchange
• Binaries:
   - Windows: we are dropping support for Windows 7. Version 4.2.0 already unintentionally broke compatibility with Win7 and there is no easy way to restore and maintain support. Existing users can keep using version 4.1.5 for now, but should consider upgrading or changing their OS. Win8.1 still works but only Win10 is regularly tested.
   - bump bundled Python version (win, mac, appimage) to 3.9.11, (android) to 3.8.13. (note these include a fix to an openssl DOS-vector CVE-2022-0778)
   - windows: bump pyinstaller to 4.10 and wine to 7.0.
   - Appimage: fix the "--portable" flag for AppImage, and for pip installs.
   - Appimage: fix AppImage failing to run on certain systems.
   - Source-only: we now also distribute a "source-only" Linux-packager-friendly tarball, in addition to the current "normal" tarball. The "source-only" tarball excludes compiled locale files, generated protobuf files, and does not vendor our runtime python dependencies (the packages/ folder).
   - Linux: fix os.chmod when running in tmpfs on Linux.
• Qt GUI:
   - macOS: fix opening "Preferences" segfaulting for some.
   - more resilient startup: better error-handling and fallback.
   - some improvements for high-DPI monitors.
   - fix duplication of some OS notifications on onchain txs.
   - better handle unparseable URIs.
• Library:
   - fix LN error/warning message-handling, and fix regression that errors during channel-open were not properly shown in GUI.
   - during LN chan open, do not backup wallet automatically.
   - Imported wallets: fix delete_address removing too many txs.
   - fix potential deadlock in wallet.py.
   - fix "Automated BIP39 recovery" not scanning change paths.
   - labels of payment requests were not propagated to history/addresses.
   - better default labels of outgoing txs.
   - bypass network proxy for localhost electrum server.
   - security fix: remove support of "file://" URIs from BIP70 payment requests, which could be used to trigger "open()" on arbitrary files (see https://github.com/spesmilo/electrum/security/advisories/GHSA-4fh4-hx35-r355)
• Hardware wallets:
   - ledger: add progress indicator to sign_transaction.
   - smarter pairing during sign_transaction.
   - keepkey: fix pairing with device using a workaround.
• Lightning:
   - watching onchain outputs: significant perf. improvements.
   - enforce relative order of some msgs during chan reestablishment, lack of which can lead to unwanted force-closures.
   - fix: in case of a force-close containing incoming HTLCs, we were redeeming all HTLCs that we know the preimage for. This might publish the preimage of an incomplete MPP.
   - support for LNURL-pay (LUD-06)
   - updated trampoline feature bit in invoices.
   - the claim transactions of reverse swaps are not broadcast until the parent transaction is confirmed. This can be overridden by manually broadcasting the local transaction.
   - the fee of submarine swap transactions can be bumped.
   - better error handling for trampoline payments, which should improve payment success rate.
   - channel backups are removed automatically when the corresponding channel is redeemed.
   - remove support of "legacy" (without static_remotekey) LN channels. Opening these channels were never supported in a release version, only during development prior to the first lightning-capable release. Wallets with such channels will have to close them.
   - handle NotEnoughFunds when trying to pay LN invoice.
   - handle NotEnoughFuds when trying to open LN channel.
   - when closing LN channels, future (timelocked) txs were not shown in history.

Features
• 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 that 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

This application is licensed under the GPL version 3. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Important:
Store your secret phrase somewhere safe!
The multi-signature and non native segwit addresses starts with a "3" and not with a "F".
Electrum-GRS creates an encrypted filename default_wallet instead of wallet.dat (like in Groestlcoin Core)
• Location Windows: Navigate to C:\Users\USER NAME\AppData\Roaming\Electrum-grs\wallets (or open windows explorer and enter %appdata%\Electrum-grs\wallets) and back up your default_wallet file by making a copy of it and moving it to a secure location.
• Location Mac: Navigate to ~/Library/Application Support/Electrum-grs/wallets and back up your default_wallet file by making a copy of it and moving it to a secure location.

You can download it using the links below and be up and running with Groestlcoin in 5 minutes.

Download the OSX wallet here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.3.1/electrum-grs-4.3.1.dmg

Download Windows installer here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.3.1/electrum-grs-4.3.1-setup.exe
Download Windows standalone wallet here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.3.1/electrum-grs-4.3.1.exe
Download Windows portable version here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.3.1/electrum-grs-4.3.1-portable.exe
                                       
Download Linux installer here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.3.1/electrum-grs-4.3.1-x86_64.AppImage

Source code:
GitHub Source server: https://github.com/spesmilo/electrumx
Github Source server installer: https://github.com/Groestlcoin/electrumx-grs-installer
Github Source client: https://github.com/Groestlcoin/electrum-grs

https://discord.com/invite/vCKxQBz

Discord link is dead on https://miningpoolstats.stream/groestlcoin

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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 fulfills 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 of Groestlcoin Core's resource-saving features like pruning, blocksonly and disabled txindex. All of Electrum-GRS's feature-richness like hardware wallet integration, multisignature 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 an big part of what makes the system be trustless. 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.

Changelog 0.2.4
• Fixed crash caused by deprecated RPC in Groestlcoin Core 23.0
• Added signet support

Features:
• Use your own node
• Tor support
• Uses less CPU and RAM than electrumx
• Used intermittently rather than needing to be always-on
• Doesn't require an index of every groestlcoin address ever used like on electrumx

How To
• If you dont already have them, download and install Groestlcoin Core version 2.17.2 or higher. The Groestlcoin node must have wallet enabled, and must have the RPC server switched on (server=1 in groestlcoin.conf). On first run, it is recommended to create a wallet dedicated to Groestlcoin Electrum Personal Server using the command line argument groestlcoin-cli createwallet electrumpersonalserver true.
• If you dont already have it, download and install Electrum-grs wallet, and set up your Electrum-grs wallet (for example by linking your hardware wallet). To avoid damaging privacy by connecting to public Electrum-GRS servers, disconnect from the internet first or run Electrum-grs with the command line argument --server localhost:50002:s.
• Download the latest release of Groestlcoin Electrum Personal Server. If using Windows OS take the packaged binary release build electrum-grs-personalserver-windows-release-XXX.zip.
• Extract and enter the directory, and copy the file config.ini_sample to config.ini. Edit the file config.ini to configure everything about the server. Add your wallet master public keys or watch-only addresses to the [master-public-keys] and [watch-only-addresses] sections. Master public keys for an Electrum-grs wallet (which start with xpub/ypub/zpub/etc) can be found in the Electrum-grs client menu Wallet -> Information. You can add multiple master public keys or watch-only addresses by adding separate lines for the different keys/addresses:
wallet1 = xpub661MyMwAqRbcF...
wallet2 = xpub7712KLsfsg46G...
• If you created a wallet dedicated to Groestlcoin Electrum Personal Server in Groestlcoin Core, you have to modify the line wallet_filename in the [groestlcoin-rpc] section with the name of the wallet, for example electrumpersonalserver.
• If using the windows packaged binary release, drag the file config.ini onto the file electrum-personal-server.exe to run the server, or on the command line run electrum-personal-server config.ini.
• If installing from the source release, install Groestlcoin Electrum Personal Server in your home directory with pip3 install --user .. On Linux the script electrum-personal-server will be installed in ~/.local/bin. Please note, if for some reason, you want to make a system-wide install, simply run pip3 install . as root (e.g. if you have sudo setup, you could use: sudo pip3 install .). Run electrum-personal-server /path/to/config.ini to start Groestlcoin Electrum Personal Server.
• The first time the server is run it will import all configured addresses as watch-only into the Groestlcoin node, and then exit. If the wallets contain historical transactions you can use the rescan script (electrum-personal-server --rescan /path/to/config.ini) to make them appear. If using the windows packaged binary release build then drag the file config.ini onto the file electrum-personal-server-rescan.bat.
• Run the server again which will start Groestlcoin Electrum Personal Server. Wait until the message Listening for Electrum-grs Wallet ... appears and then tell Electrum-grs to connect to the server in Tools -> Server. By default the server details are localhost if running on the same machine. Make sure the port number matches what is written in config.ini (port 50002 by default).

This application is licensed under the MIT license. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Windows: https://github.com/Groestlcoin/electrum-personal-server/releases/download/eps-v0.2.4-grs/electrum-grs-personal-server-windows-release-v0.2.4.zip
Linux: https://github.com/Groestlcoin/electrum-personal-server#quick-start-on-a-debianubuntu-machine-with-a-running-groestlcoin-full-node
OSX: https://github.com/Groestlcoin/electrum-personal-server#quick-start-on-a-debianubuntu-machine-with-a-running-groestlcoin-full-node

Note: Right now Groestlcoin Electrum Personal Server can only accept one connection at a time.

Source code: https://github.com/Groestlcoin/electrum-personal-server

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GRSPay Testnet is a non-custodial invoicing system which eliminates the involvement of a third-party. Payments with GRSPay Testnet go directly to your wallet, which increases the privacy and security. Your private keys are never uploaded to the server. There is no address re-use, since each invoice generates a new address deriving from your tpubkey or vpubkey.

GRSPay Testnet is available at https://testnet.grspay.com/
https://www.youtube.com/watch?v=c7s3zZnlQ6M

https://www.youtube.com/watch?v=qNMTDEPhWhY

Changelog v1.5.4.0
• New dashboard
• Wallet transactions export
• Allow resending verification email for users
• Allow Users to be disabled/enabled
• Add additional rate providers as supported from CoinGecko

Features
• Direct, P2P Groestlcoin Testnet payments
• Lightning Network Testnet support
• Complete control over private keys
• Enchanced privacy
• SegWit Testnet support
• Process payments for others
• Payment buttons
• Point of sale
• No transaction fees (other than those for the crypto networks)
• No processing fees
• No middleman
• No KYC
• The software is built in C#
• You can run GRSPay Testnet as a self-hosted solution on your own server or use our host. The self-hosted solution allows you not only to attach an unlimited number of stores but also become the payment processor for others.
• Open Source - MIT license

This application is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Source code: https://github.com/Groestlcoin/btcpayserver

---

---

GRSPay is a non-custodial invoicing system which eliminates the involvement of a third-party. Payments with GRSPay go directly to your wallet, which increases the privacy and security. Your private keys are never uploaded to the server. There is no address re-use, since each invoice generates a new address deriving from your xpubkey or zpubkey.

GRSPay is available at https://grspay.com
https://www.youtube.com/watch?v=c7s3zZnlQ6M

https://www.youtube.com/watch?v=qNMTDEPhWhY

Changelog v1.5.4.0
• New dashboard
• Wallet transactions export
• Allow resending verification email for users
• Allow Users to be disabled/enabled
• Add additional rate providers as supported from CoinGecko

Features
• Direct, P2P Groestlcoin payments
• Lightning Network support
• Complete control over private keys
• Enchanced privacy
• SegWit support
• Process payments for others
• Easy-embeddable Payment buttons
• Point of sale app
• No transaction fees (other than those for the crypto networks)
• No processing fees
• No middleman
• No KYC
• The software is built in C#
• You can run GRSPay as a self-hosted solution on your own server or use our host. The self-hosted solution allows you not only to attach an unlimited number of stores but also become the payment processor for others.
• Open Source - MIT license

This application is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Source code: https://github.com/Groestlcoin/btcpayserver

---

---

C-lightning is a lightweight, highly customizable and standard compliant implementation of the Lightning Network protocol.
C-lightning only works on Linux and Mac OS, and requires a locally (or remotely) running groestlcoind (version 2.16.0 or above) that is fully caught up with the network you're testing on.

Changelog 0.11.1
• Protocol: we now support opening multiple channels with the same peer.
• Protocol: we send/receive IP addresses in init, and send updated node_announcement when two peers report the same remote_addr (disable-ip-discovery suppresses this announcement).
• Protocol: we more aggressively send our own gossip, to improve propagation chances.
• Plugins: cln-grpc first class GRPC interface for remotely controlling nodes over mTLS authentication; set grpc-port to activate.
• Database: With the sqlite3:// scheme for --wallet option, you can now specify a second file path for real-time database backup by separating it from the main file path with a : character.
• Protocol: pay (and decode, etc) supports bolt11 payment_metadata a-la lightning/bolts#912
• JSON-RPC: invoice has a new parameter deschashonly to put hash of description in bolt11.
• JSON-RPC: pay has new parameter description, will be required if bolt11 only has a hash.
• JSON-RPC: pay has new parameter maxfee for setting absolute fee (instead of using maxfeepercent and/or exemptfee)
• JSON-RPC: listforwards has new entry style, currently "legacy" or "tlv".
• JSON-RPC: delinvoice has a new parameter desconly to remove description.
• JSON-RPC: new setchannel command generalizes setchannelfee: you can now alter the htlc_minimum_msat and htlc_maximum_msat your node advertizes.
• Config: htlc-minimum-msat and htlc-maximum-msat to set default values to advertizes for new channels.
• JSON-RPC: listpeers now includes a pushed_msat value. For leased channels, is the total lease_fee.
• JSON-RPC: getinfo result now includes our_features (bits) for various Bolt #9 contexts
• Docker build for ARM defaults to groestlcoin, but can be overridden with the LIGHTNINGD_NETWORK envvar.
• Developer: A new Rust library called cln-rpc can be used to interact with the JSON-RPC.
• JSON-RPC: A new msggen library allows easy generation of language bindings for the JSON-RPC from the JSON schemas.
• JSON-RPC: listchannels now includes the funding_outnum.
• JSON-RPC: coin_movement to 'external' accounts now include an 'originating_account' field.
• JSON-RPC: Add exclude option for pay command to manually exclude channels or nodes when finding a route.
• Database: Speed up loading of pending HTLCs during startup by using a partial index.

Features
• Creating channels.
• Closing channels.
• Completely managing all channel states (including the exceptional ones!).
• Performing path finding within the network, passively forwarding incoming payments.
• Sending outgoing onion-encrypted payments through the network.
• Automatic channel management (autopilot).

This application is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Linux: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-build-on-ubuntu
OSX: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-build-on-macos
Fedora: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-build-on-fedora
OpenBSD: https://github.com/Groestlcoin/lightning/blob/master/doc/INSTALL.md#to-build-on-openbsd

Source code: https://github.com/Groestlcoin/lightning

---

---

v23.0 is now the official release version of Groestlcoin Core. It is recommended to upgrade to this version as soon as possible.

What's new in version v23.0?
This is a major release of Groestlcoin Core, featuring the technical equivalent of Bitcoin Core v23.0 but with Groestlcoin specific patches.

Changelog 23.0:
https://github.com/Groestlcoin/groestlcoin/blob/23.0.0/doc/release-notes/release-notes-23.0.0.md

Important:
• There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.
• Encrypt your wallet. This can be done by clicking the settings menu from inside the wallet. Make sure your password is secure and do not forget it.
• Make a copy your wallet.dat file as a backup and move it to a secure location:
Location Windows: Navigate to C:\Users\Username\AppData\Roaming\groestlcoin\wallet.dat (or open windows explorer and enter %appdata%\Groestlcoin\wallet.dat)
Location Mac: Finder -> Go {Hold Option] -> Library -> groestlcoin -> wallet.dat (~/Library/Application Support/groestlcoin/wallet.dat)

WARNING:
While this branch has been extensively tested to be compatible with the existing Groestlcoin v2.11.0, v2.13.3, v2.16.0, v2.16.3, v2.17.2, v2.18.2, v2.19.1, v2.21.0, v2.21.1 and 22.0.0 network there is the possibility that we missed something. ALWAYS BACKUP YOUR GROESTLCOIN WALLET BEFORE UPGRADING.

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. Users running macOS Catalina need to "right-click" and then choose "Open" to open the Groestlcoin Core .dmg.

Download the Windows Installer (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-win64-setup.exe
Download the Windows binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-win64.zip

Download the OSX Intel based Installer here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-x86_64-apple-darwin.dmg
Download the OSX Intel based binaries here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-x86_64-apple-darwin.tar.gz
Download the OSX ARM Installer here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-arm64-apple-darwin.dmg
Download the OSX ARM binaries here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-arm64-apple-darwin.tar.gz

Download the Linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-x86_64-linux-gnu.tar.gz
Download the ARM Linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-aarch64-linux-gnu.tar.gz
Download the ARM Linux binaries (32 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-arm-linux-gnueabihf.tar.gz
Download the RISC-V Linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-riscv64-linux-gnu.tar.gz
Download PowerPC linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-powerpc64-linux-gnu.tar.gz
Download PowerPC LE linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v23.0/groestlcoin-23.0-powerpc64le-linux-gnu.tar.gz

Linux Snapcraft: https://snapcraft.io/groestlcoin-core
Linux Flathub: https://flathub.org/apps/details/org.groestlcoin.groestlcoin-qt
Linux Launchpad: https://launchpad.net/~groestlcoin/+archive/ubuntu/groestlcoin
NixOS: https://search.nixos.org/packages?channel=unstable&show=groestlcoin&from=0&size=50&sort=relevance&type=packages&query=groestlcoin
Homebrew Cask: https://formulae.brew.sh/cask/groestlcoin-core
Homebrew: https://formulae.brew.sh/formula/groestlcoin
Arch Linux User Repository: https://aur.archlinux.org/pkgbase/groestlcoin

Source code:
https://github.com/Groestlcoin/groestlcoin

---

---

Groestlcoin Esplora Signet JSON over RESTful API provides you with a convenient, powerful and simple way to read data from the groestlcoin signet network and build your own services with it.

Features
• Explore blocks, transactions and addresses
• Support for Segwit and Bech32 addresses
• Shows previous output and spending transaction details
• Quick-search for txid, address, block hash or height by navigating to /
• Advanced view with script hex/assembly, witness data, outpoints and more
• Mobile-ready responsive design
• Translated to 17 languages
• Light and dark themes
• Noscript support
• Transaction broadcast support
• QR scanner
• API support

Groestlcoin Esplora Signet is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to Groestlcoin Esplora Signet, no compensation will be given. Use Groestlcoin Esplora Signet solely at your own risk.

Groestlcoin Esplora Signet is available via https://esplora-signet.groestlcoin.org/

Source code: https://github.com/Groestlcoin/esplora

---

---

Groestlcoin Esplora Testnet JSON over RESTful API provides you with a convenient, powerful and simple way to read data from the groestlcoin testnet network and build your own services with it.

Changelog
• Taproot support
• New UI Design

Features
• Explore blocks, transactions and addresses
• Support for Segwit and Bech32 addresses
• Shows previous output and spending transaction details
• Quick-search for txid, address, block hash or height by navigating to /
• Advanced view with script hex/assembly, witness data, outpoints and more
• Mobile-ready responsive design
• Translated to 17 languages
• Light and dark themes
• Noscript support
• Transaction broadcast support
• QR scanner
• API support

Groestlcoin Esplora Testnet is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to Groestlcoin Esplora Testnet, no compensation will be given. Use Groestlcoin Esplora Testnet solely at your own risk.

Groestlcoin Esplora Testnet is available via https://esplora-test.groestlcoin.org/

Source code: https://github.com/Groestlcoin/esplora

---

---

Groestlcoin Esplora JSON over RESTful API provides you with a convenient, powerful and simple way to read data from the groestlcoin network and build your own services with it.

Changelog
• Taproot support
• New UI Design

Features
• Explore blocks, transactions and addresses
• Support for Segwit and Bech32 addresses
• Shows previous output and spending transaction details
• Quick-search for txid, address, block hash or height by navigating to /
• Advanced view with script hex/assembly, witness data, outpoints and more
• Mobile-ready responsive design
• Translated to 17 languages
• Light and dark themes
• Noscript support
• Transaction broadcast support
• QR scanner
• API support

Groestlcoin Esplora is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to Groestlcoin Esplora, no compensation will be given. Use Groestlcoin Esplora solely at your own risk.

Groestlcoin Esplora is available via https://esplora.groestlcoin.org/

Source code: https://github.com/Groestlcoin/esplora

---

---

GRSPay Testnet is a non-custodial invoicing system which eliminates the involvement of a third-party. Payments with GRSPay Testnet go directly to your wallet, which increases the privacy and security. Your private keys are never uploaded to the server. There is no address re-use, since each invoice generates a new address deriving from your tpubkey or vpubkey.

GRSPay Testnet is available at https://testnet.grspay.com/
https://www.youtube.com/watch?v=c7s3zZnlQ6M

https://www.youtube.com/watch?v=qNMTDEPhWhY

Changelog v1.4.7.0
• UX/UI: Easier onboarding
• UX/UI: New navigation
• Greenfield: Add a missingPermission field to 403 errors
• Support for new TLS version of SMTP server
• Greenfield: Added field "StoreId" to a Payment Request
• Greenfield: Can create a payment request without specifying currency (would then use store's default currency)
• Add login code, for easy login to GRSPay Server via a mobile device
• Add LNUrl Auth support as second factor auth
• Batch unarchive invoices
• Ability to bump fees of transactions and invoices via CPFP
• Add ability to add description to pull payment
• Greenfield: Can add store guest/owner to a store
• Plugins: Expose file service
• Plugins: Allow writing Greenfield API endpoints

Features
• Direct, P2P Groestlcoin Testnet payments
• Lightning Network Testnet support
• Complete control over private keys
• Enchanced privacy
• SegWit Testnet support
• Process payments for others
• Payment buttons
• Point of sale
• No transaction fees (other than those for the crypto networks)
• No processing fees
• No middleman
• No KYC
• The software is built in C#
• You can run GRSPay Testnet as a self-hosted solution on your own server or use our host. The self-hosted solution allows you not only to attach an unlimited number of stores but also become the payment processor for others.
• Open Source - MIT license

This application is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Source code: https://github.com/Groestlcoin/btcpayserver

---

---

GRSPay is a non-custodial invoicing system which eliminates the involvement of a third-party. Payments with GRSPay go directly to your wallet, which increases the privacy and security. Your private keys are never uploaded to the server. There is no address re-use, since each invoice generates a new address deriving from your xpubkey or zpubkey.

GRSPay is available at https://grspay.com
https://www.youtube.com/watch?v=c7s3zZnlQ6M

https://www.youtube.com/watch?v=qNMTDEPhWhY

Changelog v1.4.7.0
• UX/UI: Easier onboarding
• UX/UI: New navigation
• Greenfield: Add a missingPermission field to 403 errors
• Support for new TLS version of SMTP server
• Greenfield: Added field "StoreId" to a Payment Request
• Greenfield: Can create a payment request without specifying currency (would then use store's default currency)
• Add login code, for easy login to GRSPay Server via a mobile device
• Add LNUrl Auth support as second factor auth
• Batch unarchive invoices
• Ability to bump fees of transactions and invoices via CPFP
• Add ability to add description to pull payment
• Greenfield: Can add store guest/owner to a store
• Plugins: Expose file service
• Plugins: Allow writing Greenfield API endpoints

Features
• Direct, P2P Groestlcoin payments
• Lightning Network support
• Complete control over private keys
• Enchanced privacy
• SegWit support
• Process payments for others
• Easy-embeddable Payment buttons
• Point of sale app
• No transaction fees (other than those for the crypto networks)
• No processing fees
• No middleman
• No KYC
• The software is built in C#
• You can run GRSPay as a self-hosted solution on your own server or use our host. The self-hosted solution allows you not only to attach an unlimited number of stores but also become the payment processor for others.
• Open Source - MIT license

This application is licensed under MIT. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Source code: https://github.com/Groestlcoin/btcpayserver

---

---

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.

Changelog 4.2.0
• Kivy GUI:
   - show network setup on first start before wallet creation
   - add "Child Pays For Parent" option
   - improved locale handling

Features
• 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 that 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

This application is licensed under the GPL version 3. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Important:
Store your secret phrase somewhere safe!
The multi-signature and non native segwit addresses starts with a "3" and not with a "F".

Electrum-GRS is available in the Google play store:
https://play.google.com/store/apps/details?id=org.groestlcoin.electrumgrs

Source code:
GitHub Source server: https://github.com/Groestlcoin/electrumx-grs
Github Source server installer: https://github.com/Groestlcoin/electrumx-grs-installer
Github Source client: https://github.com/Groestlcoin/electrum-grs

---

---

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.

Changelog 4.2.0
• macOS builds are now codesigned and notarized
• The minimum python version was increased to 3.8
• Lightning:
   - redesigned MPP splitting algorithm
   - trampoline: implement multi-trampoline MPP
   - implement option_shutdown_anysegwit, and allow dust limits below 546 gro
   - implement option_channel_type
   - implement modern closing negotiation
• improve support for "lightning:" URIs on all platforms
• Qt GUI:
   - add setting "show amounts with msat precision"
   - add setting "add thousand separators to groestlcoin amounts"
• CLI/RPC:
   - implement Unix sockets and make them the default
   - add "bumpfee" command
• Hardware wallets:
   - trezor: bump trezorlib to 0.13
   - ledger: support "Ledger Nano S Plus"
• Library:
   - added support for sighash types beside "ALL"
   - signmessage: also accept Trezor-type sigs for segwit addrs
   - network: make request timeout configurable
   - paytomany (onchain txout batching) now allows multiple max("!") amounts with specified weights
• Binary builds
   - AppImage: changed base image from ubuntu 16.04 to 18.04
• Integration of Cirrus CI and Github Actions
• Lots of other minor bugfixes and usability improvements.

Features
• 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 that 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

This application is licensed under the GPL version 3. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to this app, no compensation will be given. Use this app solely at your own risk.

Important:
Store your secret phrase somewhere safe!
The multi-signature and non native segwit addresses starts with a "3" and not with a "F".
Electrum-GRS creates an encrypted filename default_wallet instead of wallet.dat (like in Groestlcoin Core)
• Location Windows: Navigate to C:\Users\USER NAME\AppData\Roaming\Electrum-grs\wallets (or open windows explorer and enter %appdata%\Electrum-grs\wallets) and back up your default_wallet file by making a copy of it and moving it to a secure location.
• Location Mac: Navigate to ~/Library/Application Support/Electrum-grs/wallets and back up your default_wallet file by making a copy of it and moving it to a secure location.

You can download it using the links below and be up and running with Groestlcoin in 5 minutes.

Download the OSX wallet here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.2.0/electrum-grs-4.2.0.dmg

Download Windows installer here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.2.0/electrum-grs-4.2.0-setup.exe
Download Windows standalone wallet here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.2.0/electrum-grs-4.2.0.exe
Download Windows portable version here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.2.0/electrum-grs-4.2.0-portable.exe
                                       
Download Linux installer here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.2.0/electrum-grs-4.2.0-x86_64.AppImage

Source code:
GitHub Source server: https://github.com/Groestlcoin/electrumx-grs
Github Source server installer: https://github.com/Groestlcoin/electrumx-grs-installer
Github Source client: https://github.com/Groestlcoin/electrum-grs

---

---

Blockbook Signet REST API provides you with a convenient, powerful and simple way to read data from the groestlcoin signet network and build your own services with it.

Features
• Support to broadcast transactions online. Broadcast a raw transaction in hex format over the Groestlcoin signet network.
• Multiple platforms - Supports all browsers.
• API - Complete REST and Websocket API for quering blocks, transactions, addresses and receiving live updates.
• Light - Thin data model using groestlcoind RPC interfase to validate blockchain information. Fast groestlcoind blockchain syncronization (~1hrs for the entire livenet), using RocksDB for data storage and, optionally, raw groestlcoind data files processing.
• Exhaustive - Reports on double spend attempts, outpoints confirmations, outputs spend status reports. Input and Outputs hyperlinks in transactions. Extended view in transactions to show advance details.
• Open source - Opensourced, written in go.

Blockbook signet is licensed under GPLv3. There is no warranty and no party shall be made liable to you for damages. If you lose coins due to blockbook signet, no compensation will be given. Use blockbook signet solely at your own risk.

Blockbook signet is available via https://blockbook-signet.groestlcoin.org/

Source code: https://github.com/Groestlcoin/blockbook

---

---

This tool makes it easier for users to generate compatible BIP39 seed words using audio.

Audio2bip39 is available at https://audio2bip39.groestlcoin.org/

Features
• open source
• supports only 24 word phrases

Source code: https://github.com/Groestlcoin/audio2bip39