[ANN][GRS] Groestlcoin | 1st to activate Segwit & Taproot

[gruve_p]

GRSPay Testnet: a free and open-source cryptocurrency payment processor which allows you to receive payments in Groestlcoin Testnet with no fees, transaction cost or a middleman.

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 v1.1.2.0
• Shopify support
• Support WebAuthN/FIDO2 as second factor

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 a 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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[gruve_p]

Groestltip: Your Groestlcoin tipping service for live video content!

GroestlTip is a stand alone service that doesn’t rely on third parties to tip you favorite streamers. That means you won’t get charged by third parties.

GroestlTip is available at https://groestltip.org/ and https://groestltip.com/

Getting started
https://groestltip.org/how

Features
• Streamlabs and Twitch support
• xpub (only for addresses starting with an F) support
• Paypal support
• Enhanced privacy
• No transaction fees (other than network fees)
• No processing fees
• No middleman
• No KYC
• The software is built in Python
• 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/groestltip-streamlabs

[gruve_p]

Groestlcoin Electrum Personal Server: Maximally lightweight electrum-grs server for a single user

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 0.2.2
• Massive speedup to startup time and initial import of addresses. This is done using the descriptor wallets feature of Groestlcoin Core 2.20.1 The speedup is very helpful when running Groestlcoin Electrum Personal Server on low powered devices such as the raspberry pi
• Close the connection to client if it requests an unknown address or if the connection to the Groestlcoin node is lost. The user will see a red dot in Electrum-GRS indicating that something is wrong which should prompt them to fix.
• Increase default polling interval to make the server more responsive to new transactions and confirmations
• Reduce spam in the debug log and info log
• Various other tweaks and bug fixes
• Rewrite mempool handling to always be responsive. Previously the server would massively lag if the mempool was large, so most users just disabled the mempool histogram. With this update that is no longer an issue.
• If Groestlcoin Electrum Personal Server fails at startup it will now return a non-zero error code, making it more usable with automated scripts like systemd.
• Client will now warn user if tor broadcasting fails because tor is not accessible.
• Various optimizations and bug fixes.

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-v0.2.2-grs/electrum-grs-personal-server-windows-release-v0.2.2.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

[gruve_p]

Groestlcoin Core RPC Auth Generator: Anyone who runs software that needs to talk to their own Groestlcoin Core node will need to configure that node to allow RPC access with the appropriate authentication. Groestlcoin Core's rpcauth option requires the value to be in the form of: [username]:[saltedhashedpassword]

This tool makes it easier for users who are unfamiliar with running command line scripts to create the salted, hashed password value.

Features
• open source
• salted hashed password

Live version available at https://groestlcoin.org/rpc-auth-generator/  But it is recommended to download Groestlcoin Core RPC Auth Generator offline and run it on your pc. Open index.html to get started.

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.

Download Groestlcoin Core RPC Auth Generator here: https://github.com/Groestlcoin/groestlcoin-core-rpc-auth-generator/archive/refs/heads/master.zip

Source code: https://github.com/Groestlcoin/groestlcoin-core-rpc-auth-generator

[gruve_p]

A new major Groestlcoin Core version 22.0 is now available for download, so it is recommended to upgrade to it if you are running a full Groestlcoin node or a local Groestlcoin Core wallet.

v22.0 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 v22.0?
This is a major release of Groestlcoin Core, featuring the technical equivalent of Bitcoin Core v22.0 but with Groestlcoin specific patches.

Changelog 22.0:
https://github.com/Groestlcoin/groestlcoin/blob/22.0.0/doc/release-notes/release-notes-22.0.0.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 and v2.21.1 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/v22.0/groestlcoin-22.0-win64-setup-unsigned.exe
Download the Windows binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v22.0/groestlcoin-22.0-win64.zip

Download the OSX Installer here: https://github.com/Groestlcoin/groestlcoin/releases/download/v22.0/groestlcoin-22.0-osx-unsigned.dmg
Download the OSX binaries here: https://github.com/Groestlcoin/groestlcoin/releases/download/v22.0/groestlcoin-22.0-osx64.tar.gz

Download the Linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v22.0/groestlcoin-22.0-x86_64-linux-gnu.tar.gz
Download the ARM Linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v22.0/groestlcoin-22.0-aarch64-linux-gnu.tar.gz
Download the ARM Linux binaries (32 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v22.0/groestlcoin-22.0-arm-linux-gnueabihf.tar.gz
Download the RISC-V Linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v22.0/groestlcoin-22.0-riscv64-linux-gnu.tar.gz
Download PowerPC linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v22.0/groestlcoin-22.0-powerpc64-linux-gnu.tar.gz
Download PowerPC LE linux binaries (64 bit) here: https://github.com/Groestlcoin/groestlcoin/releases/download/v22.0/groestlcoin-22.0-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

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

[gruve_p]

Electrum-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.

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 4.1.5
• Builds/binaries:
   - Android: the binaries (APKs) should now be reproducible
   - AppImage: fix some startup issues by including libxcb deps
   - macOS: the .dmg binary should now be reproducible
• Lightning:
   - smarter LN pathfinding (if trampoline is disabled):
     - estimate liquidity in channels using previous attempts
     - consider inflight HTLCs and try to route around them
   - bugfix: add more safety checks to avoid "batch RBF" feature
     merging LN funding txs
   - remove HTLC value upper limit of ~42 mGRS
   - improve payment success when using trampoline
• imported wallets: when enabling the "Use change addresses" option, change will now be sent to a random unused imported address. As before, by default, change is sent back to the "from address".
• seed generation: make sure newly created electrum-grs seeds don't have correct bip39 checksum by chance
• other minor fixes
• CLI/RPC: fix "close_wallet" command
• fix: payment requests not saved if process is killed
• add support for signet test network
• Qt GUI:
   - allow restoring from SLIP39 seeds
   - rework QR code scanning on Windows and macOS
   - support smaller window sizes, decrease minimums
• GUIs: add "funded or unused" filter option to Addresses tab

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/v4.1.5/electrum-grs-4.1.5.dmg

Download Windows installer here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.1.5/electrum-grs-4.1.5-setup.exe
Download Windows standalone wallet here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.1.5/electrum-grs-4.1.5.exe
Download Windows portable version here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.1.5/electrum-grs-4.1.5-portable.exe
                                       
Download Linux installer here: https://github.com/Groestlcoin/electrum-grs/releases/download/v4.1.5/electrum-grs-4.1.5-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

[gruve_p]

Electrum-grs is a lightweight "thin client" groestlcoin wallet Android 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.

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 4.1.5
• Kivy/Android: fix a regression where a non-LN wallet could not open the settings
• Kivy/Android: fix paying bip70 invoices (regression)
• Kivy GUI: implement freezing LN channels

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

[gruve_p]

C-lightning: A specification compliant Lightning Network implementation in C

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 0.10.1
• experimental-dual-fund allows advertizement of funding rates which we will contribute to channels automatically, on a 1-month lease.
• withdraw and close (if peer supports) now supports Taproot (and other future) addresses.
• listchannels can now be queried by destination, as well as source.
• plugin rescan now automatically reloads plugins which have changed.
• We try to restart automatically if we notice subdaemons have been upgraded underneath us.
• fundpsbt will no longer include uneconomic UTXOs (unless all).
• close will return a stream of notifications if there is a delay in closing.
• Unilateral close feerates were reduced from groestlcoind's "2 CONSERVATIVE" to "6 ECONOMICAL".
• Tor v2 is deprecated: please upgrade to v3!
• Fixed disconnection bug when an HTLC failed.
• Fixed bug in rapid feerate changes, and make code space them out (LND compat).
• Fixed bug where Tor on different ports could be advertized incorrectly.
• Fixed various bugs to make pay more robust.
• payment secrets in invoices are now compulsory, finally closing a potential probing (or, with amountless invoices, stealing) attack.
• option_shutdown_anysegwit allows peers to close channels to any future segwit version address (taproot!).
• keysend now understands routehints, for routing to unpublished nodes, and sets the final CLTV to 22, for rust-lightning nodes.
• invoice now allows creation of wumbo invoices (> 0.0429 GRS).
• We will now discuss old channels with peers who reconnect, even if we consider them closed.
• Manual pages now document exactly the JSON you can expect from each command (and it's tested!)
• Plugins can now publish notifications for other plugins to listen to.
• force-feerates allows complete feerate override (mainly for regtest), and a bug fixed where we could send 0 update_fee on regtest.
• The HSM daemon is now separated into libhsmd, which also provides Python bindings.
• createonion can now make variable-sized onions, and sendonion no longer requires direction and channel for firsthop.
• dev-sendcustommsg is now simply sendcustommsg.
• Many offers API improvements and updates, including unsigned offers (smaller QR codes!).

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

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

[gruve_p]

GRSPay: a free and open-source cryptocurrency payment processor which allows you to receive payments in Groestlcoin with no fees, transaction cost or a middleman.

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 v1.2.3.0
• Add payjoin to hot wallet setup and turn on by default
• Support spending to Taproot
• Show Immature Balance in walletsend page
• Auto-detect language on payment page
• Pull payments: Detect External OnChain Payouts
• Allow marking payout as paid manually
• Use CSP to prevent future XSS attacks.
• Fix XSS vulnerabilities in summernote, the rich text editor

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

[gruve_p]

GRSPay Testnet: a free and open-source cryptocurrency payment processor which allows you to receive payments in Groestlcoin Testnet with no fees, transaction cost or a middleman.

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 v1.2.3.0
• Add payjoin to hot wallet setup and turn on by default
• Support spending to Taproot
• Show Immature Balance in walletsend page
• Auto-detect language on payment page
• Pull payments: Detect External OnChain Payouts
• Allow marking payout as paid manually
• Use CSP to prevent future XSS attacks.
• Fix XSS vulnerabilities in summernote, the rich text editor

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

[gruve_p]

GRS RPC Explorer: Simple, database-free Groestlcoin blockchain explorer via RPC to Groestlcoin Core.

GRS RPC Explorer is a simple, self-hosted explorer for the Groestlcoin blockchain, driven by RPC calls to your own Groestlcoin node. It is easy to run and can be connected to other tools (like ElectrumX) to achieve a full-featured explorer.
Whatever reasons one may have for running a full node (trustlessness, technical curiosity, supporting the network, etc) it's helpful to appreciate the "fullness" of your node. With this explorer, you can explore not just the blockchain database, but also explore the functional capabilities of your own node.

Changelog 3.2.0
• Public API! See the docs at /api/docs
• XPUB pages: search for any xpub (ypub, zpub, etc) and see summary details and a list of associated addresses
• Homepage: add "Predicted Next Block" section
• Mempool Summary: add top-fee transactions table
• Improvements to transaction details UI, especially on smaller screens
• Cleanup support for Taproot/bech32m
• New /mining-template tool, showing structured output of getblocktemplate command
• Various improvements to charts and graphs throughout the tool (including lots of y-axis changes: linear->log)
• Better support for BIP9 soft forks shown on /node-details (e.g. Taproot ST in 2.21.1)
• New "Recent" and "Favorites" sections on /rpc-browser
• Block lists: show (min, avg, max) fee rates instead of just avg
• Random Groestlcoin-related quote shown in footer on each page load
• New /quotes, curated list of Groestlcoin-related quotes (each quote also having its own page like this)
• Preemptive support for upcoming format change to getrawtransaction output
• Fix for incorrect homepage block count when using BTCEXP_UI_HOME_PAGE_LATEST_BLOCKS_COUNT
• Fix for inaccurate difficulty adjustment estimates
• Link to Tor v3 Hidden Service in footer
• Fix for DEBUG environment variable being ignored
• Fix for /rpc-terminal not parsing non-int parameters properly
• Fix for edge case where txindex availability check fails at startup (add retries with exp. backoff)
• Fix for tiny-value display (i.e. 1e-8 -> 0.00000001)
• Misc UI/UX tweaks
• Cache busting for frontend resources
• Improved error handling in many places
• Updated dependencies
• Fix for regtest network errors on homepage
• Fix for server errors in Docker-based installs
• Improvements to no-txindex support: now available for all versions of Groestlcoin Core
•  Add back the /peers tool in the "Tools" menu. Note: The map on the peers tool now requires users set their own BTCEXP_MAPBOX_APIKEY in .env
• Response compression
• Remove reference to unused fonts.css
• Increased static-files cache: 1hr -> 1mo
• Clearer UX around RPC connection failures (show the fact clearly, instead of flooding the log with cryptic errors)
• Fixed changelog for v3.0.0 release (added/clarified some issues)
• Updated favicons
• Fix for homepage error after failure to get AU exchange rate
• UX improvements on /peers page
• Graphs for top items in /admin/stats
• Optional support for plausible.io analytics
• Fix to avoid displaying empty "Summary" section when we fail to get address txid list
• UX improvement around electrs too-many-txs-for-address errors
• Major visual refresh:
  - All new design (layout, fonts, colors, etc)
  - Redesigned Dark Mode (now the default)
  - New app icon
• Support for pruned nodes and nodes with disabled txindex! Note: Currently only Groestlcoin Core versions 2.21+ are able to support this feature (a future improvement is planned to make it available to all versions)
• Mempool Summary improvements:
  - Greatly improved performance for multiple loads via caching
  - Added: "Blocks Count" column by fee-rate bucket
  - Tool for estimating Block Depth of a transaction or a fee rate
• Mining Summary: added doughnut chart for rev. breakdown, simplified table data
• Upgraded to Bootstrap 5 (currently beta3...)
• Update mapbox API. Note: The map on the /peers page now requires that users set the env var BTCEXP_MAPBOX_APIKEY to their own API key
• Fix for 404 pages hanging
• Add convenience redirect for baseUrl
• Make url in logs clickable
• Caching for static files (maxAge=1hr)
• Frontend performance optimizations
• Smarter performance/memory defaults for slow devices
• Major refactoring, modernization, and code-reuse improvements
• UX improvements and polish throughout
• URL changes:
  - /node-status -> /node-details
  - /unconfirmed-tx -> /mempool-transactions
• Environment variable changes:
  - The below changes were made to more clearly acknowledge that multiple Electrum-protocol implementations (e.g. ElectrumX, Electrs) can be used for address queries:
  - BTCEXP_ADDRESS_API value electrumx -> electrum (electrumx should still works)
  - BTCEXP_ELECTRUMX_SERVERS -> BTCEXP_ELECTRUM_SERVERS (BTCEXP_ELECTRUMX_SERVERS should still work)
• Updated dependencies:
  - jQuery: v3.4.1 -> v3.6.0
  - highlight.js: v9.14.2 -> v10.7.1
  - fontawesome: v5.7.1 -> v5.15.3
• New fee rate data on /block-analysis pages
• New minor misc peer data available in Groestlcoin Core RPC v2.21+
• New gold exchange rate on homepage
• Fix for SSO token generation URL encoding
• Fix for /peers map
• Fix for README git clone
• Support for running on a configurable BASEURL, e.g. "/explorer/"
• Support for SSO
• Support for signet and taproot
• Support for listening on 0.0.0.0
• Support for viewing list of block heights for each miner on /mining-summary
• Sanitizing of environment variables
• Fix for XSS vulnerabilities
• Fix for low severity lodash dependency vulnerability
• Fix for zero block reward (eventually on mainnet, now on regtest)
• Fix for cryptic error when running regtest with no blocks
• Fix for pagination errors on /blocks (not displaying genesis block on the last page; error on last page when sort=asc)
• Electrum-grs connect/disconnect stats on /admin
• Add P2SH bounty address /fun items
• Misc cleanup

Features
• Network Summary dashboard
• View details of blocks, transactions, and addresses
• Analysis tools for viewing stats on blocks, transactions, and miner activity
• See raw JSON content from groestlcoind used to generate most pages
• Search by transaction ID, block hash/height, and address
• Optional transaction history for addresses by querying from ElectrumX
• Mempool summary, with fee, size, and age breakdowns
• RPC command browser and terminal

GRS RPC Explorer 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 GRS RPC Explorer, no compensation will be given. Use GRS RPC Explorer solely at your own risk.

GRS RPC Explorer is available via https://rpcexplorer.groestlcoin.org/

Source code: https://github.com/Groestlcoin/grs-rpc-explorer

[gruve_p]

GRS RPC Explorer Testnet: Simple, database-free Groestlcoin testnet blockchain explorer via RPC to Groestlcoin Core.

GRS RPC Explorer testnet is a simple, self-hosted explorer for the Groestlcoin testnet blockchain, driven by RPC calls to your own Groestlcoin testnet node. It is easy to run and can be connected to other tools (like ElectrumX) to achieve a full-featured explorer.
Whatever reasons one may have for running a full node (trustlessness, technical curiosity, supporting the network, etc) it's helpful to appreciate the "fullness" of your node. With this explorer, you can explore not just the blockchain database, but also explore the functional capabilities of your own node.

Changelog 3.2.0
• Public API! See the docs at /api/docs
• XPUB pages: search for any xpub (ypub, zpub, etc) and see summary details and a list of associated addresses
• Homepage: add "Predicted Next Block" section
• Mempool Summary: add top-fee transactions table
• Improvements to transaction details UI, especially on smaller screens
• Cleanup support for Taproot/bech32m
• New /mining-template tool, showing structured output of getblocktemplate command
• Various improvements to charts and graphs throughout the tool (including lots of y-axis changes: linear->log)
• Better support for BIP9 soft forks shown on /node-details (e.g. Taproot ST in 2.21.1)
• New "Recent" and "Favorites" sections on /rpc-browser
• Block lists: show (min, avg, max) fee rates instead of just avg
• Random Groestlcoin-related quote shown in footer on each page load
• New /quotes, curated list of Groestlcoin-related quotes (each quote also having its own page like this)
• Preemptive support for upcoming format change to getrawtransaction output
• Fix for incorrect homepage block count when using BTCEXP_UI_HOME_PAGE_LATEST_BLOCKS_COUNT
• Fix for inaccurate difficulty adjustment estimates
• Link to Tor v3 Hidden Service in footer
• Fix for DEBUG environment variable being ignored
• Fix for /rpc-terminal not parsing non-int parameters properly
• Fix for edge case where txindex availability check fails at startup (add retries with exp. backoff)
• Fix for tiny-value display (i.e. 1e-8 -> 0.00000001)
• Misc UI/UX tweaks
• Cache busting for frontend resources
• Improved error handling in many places
• Updated dependencies
• Fix for regtest network errors on homepage
• Fix for server errors in Docker-based installs
• Improvements to no-txindex support: now available for all versions of Groestlcoin Core
•  Add back the /peers tool in the "Tools" menu. Note: The map on the peers tool now requires users set their own BTCEXP_MAPBOX_APIKEY in .env
• Response compression
• Remove reference to unused fonts.css
• Increased static-files cache: 1hr -> 1mo
• Clearer UX around RPC connection failures (show the fact clearly, instead of flooding the log with cryptic errors)
• Fixed changelog for v3.0.0 release (added/clarified some issues)
• Updated favicons
• Fix for homepage error after failure to get AU exchange rate
• UX improvements on /peers page
• Graphs for top items in /admin/stats
• Optional support for plausible.io analytics
• Fix to avoid displaying empty "Summary" section when we fail to get address txid list
• UX improvement around electrs too-many-txs-for-address errors
• Major visual refresh:
  - All new design (layout, fonts, colors, etc)
  - Redesigned Dark Mode (now the default)
  - New app icon
• Support for pruned nodes and nodes with disabled txindex! Note: Currently only Groestlcoin Core versions 2.21+ are able to support this feature (a future improvement is planned to make it available to all versions)
• Mempool Summary improvements:
  - Greatly improved performance for multiple loads via caching
  - Added: "Blocks Count" column by fee-rate bucket
  - Tool for estimating Block Depth of a transaction or a fee rate
• Mining Summary: added doughnut chart for rev. breakdown, simplified table data
• Upgraded to Bootstrap 5 (currently beta3...)
• Update mapbox API. Note: The map on the /peers page now requires that users set the env var BTCEXP_MAPBOX_APIKEY to their own API key
• Fix for 404 pages hanging
• Add convenience redirect for baseUrl
• Make url in logs clickable
• Caching for static files (maxAge=1hr)
• Frontend performance optimizations
• Smarter performance/memory defaults for slow devices
• Major refactoring, modernization, and code-reuse improvements
• UX improvements and polish throughout
• URL changes:
  - /node-status -> /node-details
  - /unconfirmed-tx -> /mempool-transactions
• Environment variable changes:
  - The below changes were made to more clearly acknowledge that multiple Electrum-protocol implementations (e.g. ElectrumX, Electrs) can be used for address queries:
  - BTCEXP_ADDRESS_API value electrumx -> electrum (electrumx should still works)
  - BTCEXP_ELECTRUMX_SERVERS -> BTCEXP_ELECTRUM_SERVERS (BTCEXP_ELECTRUMX_SERVERS should still work)
• Updated dependencies:
  - jQuery: v3.4.1 -> v3.6.0
  - highlight.js: v9.14.2 -> v10.7.1
  - fontawesome: v5.7.1 -> v5.15.3
• New fee rate data on /block-analysis pages
• New minor misc peer data available in Groestlcoin Core RPC v2.21+
• New gold exchange rate on homepage
• Fix for SSO token generation URL encoding
• Fix for /peers map
• Fix for README git clone
• Support for running on a configurable BASEURL, e.g. "/explorer/"
• Support for SSO
• Support for signet and taproot
• Support for listening on 0.0.0.0
• Support for viewing list of block heights for each miner on /mining-summary
• Sanitizing of environment variables
• Fix for XSS vulnerabilities
• Fix for low severity lodash dependency vulnerability
• Fix for zero block reward (eventually on mainnet, now on regtest)
• Fix for cryptic error when running regtest with no blocks
• Fix for pagination errors on /blocks (not displaying genesis block on the last page; error on last page when sort=asc)
• Electrum-grs connect/disconnect stats on /admin
• Add P2SH bounty address /fun items
• Misc cleanup

Features
• Network Summary dashboard
• View details of blocks, transactions, and addresses
• Analysis tools for viewing stats on blocks, transactions, and miner activity
• See raw JSON content from groestlcoind used to generate most pages
• Search by transaction ID, block hash/height, and address
• Optional transaction history for addresses by querying from ElectrumX
• Mempool summary, with fee, size, and age breakdowns
• RPC command browser and terminal

GRS RPC Explorer 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 GRS RPC Explorer testnet, no compensation will be given. Use GRS RPC Explorer testnet solely at your own risk.

GRS RPC Explorer testnet is available via https://rpcexplorer-test.groestlcoin.org/

Source code: https://github.com/Groestlcoin/grs-rpc-explorer

[gruve_p]

A Hierarchical Deterministic Groestlcoin Wallet

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

Changelog 8.14
• Fix issue with not being able to send due to blockchain replay.
• Fix layout on 10in tablets.
• Customize the connectivity notification in trusted peer mode.
• Fix a build reproducibility issue.
• Update translations from Transifex.
• Improve offline payments via Bluetooth for Android 8.1 (Oreo) and up. Merchants should configure their own Bluetooth address in the settings.
• Restructure the settings page.
• Use CoinGecko.com for exchange rates.
• The color of the transaction confirmation indicator has been changed. It now starts red with one confirmation, slowly blending to green for 7 confirmations.
• On Android 9 and older, switched the app-widget back to dark. On Android 10, use the dark/light system setting.
• Get rid of the last internal content provider; replace it with a repository and an SQLite database.
• Minor bugfixes.
• Remove the ability to directly add an address to the address book from the clipboard due to safety concerns. The QR code scanner can still be used, and addresses you've already sent to can be added as well.
• Visual overhaul of the address book.
• Visual overhaul of the network monitor.
• Visual overhaul of the exchange rates list.
• Visual overhaul of the transactions list.
• Allow multiple trusted peers by separating them with a space character.
• The app now requires Android 6.0 (Marshmallow) or higher.
• On modern devices: Introduce a blockchain synchronization mode that prioritizes privacy vs data usage.
• Trusted peers with custom TCP ports are now supported. Use the IPv4:port or [IPv6]:port syntax.
• Based on groestlcoinj 0.15.10.

Features:
• Sweep paper wallets
• Transparant - free and open source
• Blockexplorer support
• Network monitor
• Backup/restore option
• Spending pin
• xpub support
• Ability to reset blockchain
• Ability to change denomination
• Ability to connect to trusted peer
• Connectivity indicator

If the app crashes you can send the report via email or another method if your phone allows it.
To close the app, simply press the back button until you reach your home screen.  The app will close itself (there is no need for a disconnect option).
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.

Groestlcoin Wallet is available in the Google play store:
https://play.google.com/store/apps/details?id=hashengineering.groestlcoin.wallet

Groestlcoin Wallet is available on Fdroid:
https://f-droid.org/en/packages/hashengineering.groestlcoin.wallet

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

[gruve_p]

A Hierarchical Deterministic Groestlcoin Testnet Wallet

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

Changelog 8.14
• Fix issue with not being able to send due to blockchain replay.
• Fix layout on 10in tablets.
• Customize the connectivity notification in trusted peer mode.
• Fix a build reproducibility issue.
• Update translations from Transifex.
• Improve offline payments via Bluetooth for Android 8.1 (Oreo) and up. Merchants should configure their own Bluetooth address in the settings.
• Restructure the settings page.
• Use CoinGecko.com for exchange rates.
• The color of the transaction confirmation indicator has been changed. It now starts red with one confirmation, slowly blending to green for 7 confirmations.
• On Android 9 and older, switched the app-widget back to dark. On Android 10, use the dark/light system setting.
• Get rid of the last internal content provider; replace it with a repository and an SQLite database.
• Minor bugfixes.
• Remove the ability to directly add an address to the address book from the clipboard due to safety concerns. The QR code scanner can still be used, and addresses you've already sent to can be added as well.
• Visual overhaul of the address book.
• Visual overhaul of the network monitor.
• Visual overhaul of the exchange rates list.
• Visual overhaul of the transactions list.
• Allow multiple trusted peers by separating them with a space character.
• The app now requires Android 6.0 (Marshmallow) or higher.
• On modern devices: Introduce a blockchain synchronization mode that prioritizes privacy vs data usage.
• Trusted peers with custom TCP ports are now supported. Use the IPv4:port or [IPv6]:port syntax.
• Based on groestlcoinj 0.15.10.

Features:
• Sweep testnet paper wallets
• Transparant - free and open source
• Testnet blockexplorer support
• Network monitor
• Backup/restore option
• Spending pin
• tpub support
• Ability to reset blockchain
• Ability to change denomination
• Ability to connect to trusted peer
• Connectivity indicator

If the app crashes you can send the report via email or another method if your phone allows it.  Reports of errors can also be posted in this topic.
To close the app, simply press the back button until you reach your home screen.  The app will close itself (there is no need for a disconnect option).
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.

Groestlcoin Testnet Wallet is available in the Google play store:
https://play.google.com/store/apps/details?id=hashengineering.groestlcoin.wallet_test

Groestlcoin Testnet Wallet is available on Fdroid:
https://f-droid.org/en/packages/hashengineering.groestlcoin.wallet_test/

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

[gruve_p]

Groestlcoin VerifySignature: This implementation can accept get parameters, so it is linkable externally, and users could easily copy-paste one link to their counterparties to verify. This should be useful for people who do OTC and regularly do proof-of-funds before the transaction.

This tool makes it easier for users to verify signatures online/offline.

Features
• open source
• compiles into static html files so it can run completely offline

Live version available at https://verify.groestlcoin.org/VerifySignature  But it is recommended to download Groestlcoin VerifySignature offline and run it on your pc. Open index.html to get started.

Download Groestlcoin VerifySignature here: https://github.com/Groestlcoin/VerifySignature/archive/refs/heads/master.zip

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

[Gash]

WebAuthN has in the recent years spurred on terrible antagonism amongst its users. People get mad with their credentials being stolen and their pear-round heads cracking from lather and misgiving upon realization that their accounts were brutalized and access to their sites was lost. This creates mutinous sentiment which bears down heavily on mental state of gullible of this world.

[IMZ Noo Account]

Way way too long since I've posted here. Nice to gruve_p here.

'mutinous sentiment bearing heavily down on mental states'? Yeh, a lot of that going around

[gruve_p]

C-lightning: A specification compliant Lightning Network implementation in C

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 0.10.2
• Payments can now be retried without affecting the status of prior attempts.
• The route selection will now use the log-propability-based channel selection to increase success rate and reduce time to completion.
• close now reports the feeranges each side enforced, which allows users to determine which side caused a high or low feerate.
• Removal of old HTLC information and vacuuming shrinks large lightningd.sqlite3 by a factor of 2-3.
• setchannelfee now has a grace period during which both old and new fee policies are considered. This prevents a fee update from making the channel unusable until the update propagated.
• We now perform quick-close if the peer supports it.
• We send regular pings to detect dead connections (particularly for Tor).
• Errors returning a channel_update no longer return an outdated one.
• Anchor output mutual close allow a fee higher than the final commitment transaction.
• Plugins now are notified about an upcoming shutdown, allowing them to store data and clean up before exiting.
• The datastore API (datastore, deldatastore, and listdatastore) exposes a simple key-value store, allowing plugin authors to store data in the c-lightning database.
• ping now only works if we have a channel with the peer.
• Relaxed the sqlite3 version match requirements to be at least a minimum version and a major version match

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

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

[gruve_p]

GRSPay: a free and open-source cryptocurrency payment processor which allows you to receive payments in Groestlcoin with no fees, transaction cost or a middleman.

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 v1.3.6.0
• Taproot support
• Specify default payment method through UI and Greenfield API
• Disallow cancelling payment request when "Allow payee to create invoices in their own denomination" is not enabled
• Support custom currencies for Pay button generator
• Show total balance on wallets list
• Add ability to set invoice status from details page
• Add ability to accept tips in POS terminal
• Add ability to wipe all the transactions of a wallet for admins
• Allow User to delete own account
• Allow email notifications when creating invoices from Web UI
• Greenfield: Provide negative undue when overpaid.
• Support topup invoices in apps
• Support Lightning in Pull Payments.
• Support LNURL and Lightning address in Pull Payments
• Add boolean overPaid to the invoice settled webhook
• Ability to display and update the appname in crowdfund and PoS
• Add ability to require refund email from app level
• Azerbaijan support for the checkout
• Upgrade to Bootstrap 5.1.3

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

[gruve_p]

GRSPay Testnet: a free and open-source cryptocurrency payment processor which allows you to receive payments in Groestlcoin Testnet with no fees, transaction cost or a middleman.

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 v1.3.6.0
• Taproot support
• Specify default payment method through UI and Greenfield API
• Disallow cancelling payment request when "Allow payee to create invoices in their own denomination" is not enabled
• Support custom currencies for Pay button generator
• Show total balance on wallets list
• Add ability to set invoice status from details page
• Add ability to accept tips in POS terminal
• Add ability to wipe all the transactions of a wallet for admins
• Allow User to delete own account
• Allow email notifications when creating invoices from Web UI
• Greenfield: Provide negative undue when overpaid.
• Support topup invoices in apps
• Support Lightning in Pull Payments.
• Support LNURL and Lightning address in Pull Payments
• Add boolean overPaid to the invoice settled webhook
• Ability to display and update the appname in crowdfund and PoS
• Add ability to require refund email from app level
• Azerbaijan support for the checkout
• Upgrade to Bootstrap 5.1.3

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