Messages

Groestlcoin Sentinel is the easiest and fastest way to track/receive/watch payments in your offline Groestlcoin Wallets. Groestlcoin Sentinel is compatible with any standard Groestlcoin address or BIP 44 XPUB (Extended Public Key).

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

Features
• Open source and unlicensed.
• No Private Keys - Groestlcoin Sentinel only uses Public Keys. It never knows or never asks for your Private Keys.
• Track multiple XPUB's or Addresses - Add multiple XPUB's or addresses to your Groestlcoin Sentinel Watchlist to keep track of balances, transactions, and accept payments into any added wallet or address.
• Deterministically derives Groestlcoin Addresses - Deterministically derive new Groestlcoin addresses associated with your added wallets without needing access or knowledge to your private keys.
• Shareable QR code - Create payment request QR codes with address and amount encoded directly into the image. Share with anyone or any app directly from Groestlcoin Sentinel.
• The most popular Fiat currencies - Groestlcoin Sentinel can convert GRS to your local currency. Supported currencies are: USD, EUR, GBP, CNY and RUB
• Exchanges - Groestloin Sentinel can pull the current Fiat price from Cryptopia and Bittrex.
• Secure PIN Code protection - Add a secure PIN code to protect access to Groestlcoin Sentinel. Optionally turn on PIN Scramble to help thwart against keylogger attacks.

It is appreciated if feedback of the following is provided:
1. Can you receive coins? (small amounts to avoid losing them)
2. Can you scan a QR code from another phone.
3. Does it calculate exchange rates properly in your local currency?
4. Can you view the transactions on the block explorer?
5. Are you able to export and restore the wallet?
6. Can you add multiple XPUB's or addresses in the wallet?

This application is unlicensed. 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.

The application may have unfound bugs and problems. To leave feedback: 
1.  PM hashengineering on bitcointalk: https://bitcointalk.org/index.php?action=profile;u=155038
2.  Email: [email protected]
3.  Reports of errors can also be posted in this topic.

Groestlcoin Sentinel is available in the Blackberry World:
https://appworld.blackberry.com/webstore/content/59999358/

Source code:
https://github.com/Groestlcoin/groestlcoin-sentinel-android - The Groestlcoin Sentinel source code

Groestlcoin Sentinel is the easiest and fastest way to track/receive/watch payments in your offline Groestlcoin Wallets. Groestlcoin Sentinel is compatible with any standard Groestlcoin address or BIP 44 XPUB (Extended Public Key).

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

Features
• Open source and unlicensed
• No Private Keys - Groestlcoin Sentinel only uses Public Keys. It never knows or never asks for your Private Keys.
• Track multiple XPUB's or Addresses - Add multiple XPUB's or addresses to your Groestlcoin Sentinel Watchlist to keep track of balances, transactions, and accept payments into any added wallet or address.
• Deterministically derives Groestlcoin Addresses - Deterministically derive new Groestlcoin addresses associated with your added wallets without needing access or knowledge to your private keys.
• Shareable QR code - Create payment request QR codes with address and amount encoded directly into the image. Share with anyone or any app directly from Groestlcoin Sentinel.
• The most popular Fiat currencies - Groestlcoin Sentinel can convert GRS to your local currency. Supported currencies are: USD, EUR, GBP, CNY and RUB
• Exchanges - Groestloin Sentinel can pull the current Fiat price from Cryptopia and Bittrex.
• Secure PIN Code protection - Add a secure PIN code to protect access to Groestlcoin Sentinel. Optionally turn on PIN Scramble to help thwart against keylogger attacks.

It is appreciated if feedback of the following is provided:
1. Can you receive coins? (small amounts to avoid losing them)
2. Can you scan a QR code from another phone.
3. Does it calculate exchange rates properly in your local currency?
4. Can you view the transactions on the block explorer?
5. Are you able to export and restore the wallet?
6. Can you add multiple XPUB's or addresses in the wallet?

This application is unlicensed. 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.

The application may have unfound bugs and problems. To leave feedback: 
1.  PM hashengineering on bitcointalk: https://bitcointalk.org/index.php?action=profile;u=155038
2.  Email: [email protected]
3.  Reports of errors can also be posted in this topic.

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

Source code:
https://github.com/Groestlcoin/groestlcoin-sentinel-android - The Groestlcoin Sentinel source code

Groestlcoin Lite is a simplistic lightweight "thin client" Groestlcoin wallet for Windows, MacOS and Linux based on groestlcoinj. Its main advantages over the original Groestlcoin client include support for not requiring the download of the entire block chain and being simplistic.

If you are an ordinary user of Groestlcoin and simply want a wallet that just works without hassle, then Groestlcoin Lite is the right choice for you.

Features
• Quick and easy to install across all major desktop operating systems (Windows, Mac, Linux)
• Secure by design - all private keys are kept encrypted on your local machine (or on a USB stick)
• Faster - Synchronizes with the network by downloading the block headers only very quickly
• Lighter - It does not require a new user to download the entire Groestlcoin chain and store it
• Easy - no need to search for extra nodes and edit the conf file
• Free and decentralised - Open Source under MIT license

It is appreciated if feedback of the following is provided:
1.  Can you receive coins? (small amounts to avoid losing them)
2.  Can you send coins?
3.  How long does it take to sync the blockchain?
4. Are you able to encrypt/decrypt the wallet?

On first run it will take a few minutes to sync up, during which the wallet will be shown as "Starting", and it will switch to "Running" once ready. If the wallet is stuck on starting, simply close the program and start it again.
To receive coins, use the address listed at the top-left of the window, and to send use the address at the bottom. To encrypt the wallet right-click it in the list on the right-hand side and select "Encrypt Wallet" then follow the prompts.
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.

The application may have unfound bugs and problems. To leave feedback: 
1. PM me
2. Email: [email protected]
3. Post reports of erros in this topic.

Important:
Groestlcoin Lite uses a filename cate_org.groestlcoin.production.wallet instead of wallet.dat (like in Groestlcoin Core)
• Location Windows: Navigate to C:\Users\USER NAME\AppData\Roaming\GroestlcoinLite (or open windows explorer and enter %appdata%\GroestlcoinLite) and back up your cate_org.groestlcoin.production.wallet file by making a copy of it and moving it to a secure location.
• Location Mac: Navigate to ~/Libarary/Application Support/GroestlcoinLite and back up your cate_org.groestlcoin.production.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 2 minutes.
Download the Linux wallet here: https://github.com/GroestlCoin/cate/releases/download/0.14-GRS/groestlcoin-lite_unix_0_14_0.sh
Download the OSX DMG Wallet here: https://github.com/GroestlCoin/cate/releases/download/0.14-GRS/groestlcoin-lite_macos_0_14_0.dmg
Download the Windows 32bit Wallet here: https://github.com/GroestlCoin/cate/releases/download/0.14-GRS/groestlcoin-lite_windows_0_14_0.exe
Download the Windows 64bit Wallet here: https://github.com/GroestlCoin/cate/releases/download/0.14-GRS/groestlcoin-lite_windows-x64_0_14_0.exe

Source code:
https://github.com/GroestlCoin/groestlcoinj - Groestlcoin Java Library for Groestlcoin Lite
https://github.com/GroestlCoin/cate - The Groestlcoin Lite Wallet Source code

Simple Groestlcoin is a standalone wallet for Blackberry devices which does not depend on any centralized service and gives you full control over your precious groestlcoins. Its main advantages over the original Groestlcoin Blackberry client include support for HD wallet.

Features
• A single-page application which allows you to store your Groestlcoins securely and transfer them easily.
• It is an HD wallet which means your balance and full transaction history can always be restored using a single mnemonic code should anything bad happen to your device.
• This wallet is intended for mobile devices, hence it does not store a full Blockchain but instead acquires all the relevant data from random groestlcoin nodes using an SPV technique.
• Self-Destruction functionality. Set up a secret code which you can use to self-destruct all wallet data. Use your mnemonic code to restore your wallet again.
• Open source under GPL v3 License
• Wallet only needs to be backed up once, on initial creation.
• Wallet backup consists of simple list of 12 common words (BIP-0039).
• No servers just the Groestlcoin network using the Groestlcoinj library.
• Simple and intuitive user interface.
• No worrying about losing private keys any more - use your "wallet words" (seed phrase) to restore them.

Mnemonic code
Simple Groestlcoin is a so called HD wallet: all Groestlcoin addresses and private keys come from a single mnemonic code which is essentially a phrase comprising of 12 random words. Please remember: whoever knows your mnemonic code also fully controls your Groestlcoins so it should be kept private at all times.
Also, in case if you lose your device or forget your wallet password only mnemonic code can get your Groestlcoins back, it's that important! Ideally one of the following actions should be taken once a new wallet is created:
• Either write your mnemonic code on a piece of paper and store it in a really secure place.
• Or encrypt your mnemonic code using wallet password as a key and store it wherever you like. For that you can use AES-256 text encryption in Secret Space Encryptor which is a popular open source Blackberry app.

Unconfirmed transactions
Here's a simple heuristic: treat any unconfirmed incoming transaction as if it does not exist yet. There are a lot of technical reasons for this and the rule applies to all wallets, not just to Simple Groestlcoin Wallet. Just wait for at least one confirmation and you'll be fine.

Transaction fees
Every transaction you send must have some fee attached to it. Fee goes not to wallet developer but to Groestlcoin miners who include transactions in blocks and thus give them confirmations. The higher fee you choose the faster transaction will be confirmed.

Wallet addresses
Due to privacy considerations wallet has not one but many addresses. In fact, wallet's default address gets changed on every new incoming transaction. Never worry about it as all the old wallet addresses stay valid forever and you can use any of them to receive funds.

In case you lose your password...
It's important to understand that Simple Groestlcoin Wallet is not a centralized service so you can't regain access to your funds by just providing an email or something like that. Here you'll need to restore a wallet using your mnemonic code and this is how to do it step by step:
1. Erase all current wallet data if you know how to do that (such an option is typically available in System Settings), otherwise just reinstall an application from scratch.
2. Open fresh application and you'll be given an option to restore your wallet instead of creating a new one, choose it and enter your mnemonic code as well as new wallet password.

It is appreciated if feedback of the following is provided:
1.  Can you receive coins? (small amounts to avoid losing them)
2.  Can you send coins?
3.  Can you scan a QR code from another phone.
4.  Can you request coins via email or other Blackberry service?
5.  How long does it take to sync the blockchain?
6.  How much space does it take up on your phone?
7.  Does it calculate exchange rates properly?
8.  Does the self-destruction function work properly?

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 note: restored wallet will appear empty at first and that is completely normal as it needs some time to catch up with network.

The application may have unfound bugs and problems. To leave feedback: 
1.  PM hashengineering on bitcointalk: https://bitcointalk.org/index.php?action=profile;u=155038
2.  Email: [email protected]
3.  Reports of errors can also be posted in this topic.

Simple Groestlcoin is available in the Blackberry World:
https://appworld.blackberry.com/webstore/content/59994342/

Source code:
https://github.com/Groestlcoin/groestlcoinj - Groestlcoin Java Library (for the Blackberry App and possibly other software)
https://github.com/GroestlCoin/btcontract-wallet - The Simple Groestlcoin Blackberry Wallet Source code

Simple Groestlcoin is a standalone wallet for Android devices which does not depend on any centralized service and gives you full control over your precious groestlcoins. Its main advantages over the original Groestlcoin Android client include support for HD wallet.

Features
• A single-page application which allows you to store your Groestlcoins securely and transfer them easily.
• It is an HD wallet which means your balance and full transaction history can always be restored using a single mnemonic code should anything bad happen to your device.
• This wallet is intended for mobile devices, hence it does not store a full Blockchain but instead acquires all the relevant data from random groestlcoin nodes using an SPV technique.
• Self-Destruction functionality. Set up a secret code which you can use to self-destruct all wallet data. Use your mnemonic code to restore your wallet again.
• Open source under GPL v3 License
• Wallet only needs to be backed up once, on initial creation.
• Wallet backup consists of simple list of 12 common words (BIP-0039).
• No servers just the Groestlcoin network using the Groestlcoinj library.
• Simple and intuitive user interface.
• No worrying about losing private keys any more - use your "wallet words" (seed phrase) to restore them.

Mnemonic code
Simple Groestlcoin is a so called HD wallet: all Groestlcoin addresses and private keys come from a single mnemonic code which is essentially a phrase comprising of 12 random words. Please remember: whoever knows your mnemonic code also fully controls your Groestlcoins so it should be kept private at all times.
Also, in case if you lose your device or forget your wallet password only mnemonic code can get your Groestlcoins back, it's that important! Ideally one of the following actions should be taken once a new wallet is created:
• Either write your mnemonic code on a piece of paper and store it in a really secure place.
• Or encrypt your mnemonic code using wallet password as a key and store it wherever you like. For that you can use AES-256 text encryption in Secret Space Encryptor which is a popular open source Android app.

Unconfirmed transactions
Here's a simple heuristic: treat any unconfirmed incoming transaction as if it does not exist yet. There are a lot of technical reasons for this and the rule applies to all wallets, not just to Simple Groestlcoin Wallet. Just wait for at least one confirmation and you'll be fine.

Transaction fees
Every transaction you send must have some fee attached to it. Fee goes not to wallet developer but to Groestlcoin miners who include transactions in blocks and thus give them confirmations. The higher fee you choose the faster transaction will be confirmed.

Wallet addresses
Due to privacy considerations wallet has not one but many addresses. In fact, wallet's default address gets changed on every new incoming transaction. Never worry about it as all the old wallet addresses stay valid forever and you can use any of them to receive funds.

In case you lose your password...
It's important to understand that Simple Groestlcoin Wallet is not a centralized service so you can't regain access to your funds by just providing an email or something like that. Here you'll need to restore a wallet using your mnemonic code and this is how to do it step by step:
1. Erase all current wallet data if you know how to do that (such an option is typically available in System Settings), otherwise just reinstall an application from scratch.
2. Open fresh application and you'll be given an option to restore your wallet instead of creating a new one, choose it and enter your mnemonic code as well as new wallet password.

It is appreciated if feedback of the following is provided:
1.  Can you receive coins? (small amounts to avoid losing them)
2.  Can you send coins?
3.  Can you scan a QR code from another phone.
4.  Can you request coins via email or other android service?
5.  How long does it take to sync the blockchain?
6.  How much space does it take up on your phone?
7.  Does it calculate exchange rates properly?
8.  Does the self-destruction function work properly?

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 note: restored wallet will appear empty at first and that is completely normal as it needs some time to catch up with network.

The application may have unfound bugs and problems. To leave feedback: 
1.  PM hashengineering on bitcointalk: https://bitcointalk.org/index.php?action=profile;u=155038
2.  Email: [email protected]
3.  Reports of errors can also be posted in this topic.

Simple Groestlcoin is available in the Google play store:
https://play.google.com/store/apps/details?id=hashengineering.groesltcoin.btcontract_wallet

Source code:
https://github.com/Groestlcoin/groestlcoinj - Groestlcoin Java Library (for the Android App and possibly other software)
https://github.com/GroestlCoin/btcontract-wallet - The Simple Groestlcoin Android Wallet Source code

AGCore is an Android app designed to make it easier to run a Groestlcoin Core node on always on Android appliances such as set top boxes or repurposed tables/phones.

If you are an simple user of Groestlcoin and want an Android app that makes it easy to run Groestlcoin Core by acting as a wrapper, then AGcore is the right choice for you.

Features
• AGCore runs on Android Devices
• No need to keep active your PC/Server 24/7
• Low power consumption
• You can edit groestlcoin.conf
• APK downloads the necessary architectures from Debian repositories (https://packages.qa.debian.org/g/groestlcoin.html)
• All Groestlcoin builds on Debian are maintained by the Debian Bitcoin Packaging Team (https://qa.debian.org/[email protected])
• Supports amd64, i386, armhf and aarch64 architectures
• Easy replace external hard drive to store the Block-Chain
• You can install it on home devices that are already active 24/7 (like Minix Neo)
• Easy - no need to search for extra nodes and edit the conf file
• Free and decentralised - Open Source under MIT license

It is appreciated if feedback of the following is provided:
1. Can you install AGcore on your Android home device(s)?
2. Does it start syncing?

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.

The application may have unfound bugs and problems. To leave feedback: 
1.  PM hashengineering on bitcointalk: https://bitcointalk.org/index.php?action=profile;u=155038
2.  Email: [email protected]
3.  Reports of errors can also be posted in this topic.

Important:
This app requires a gigabyte of disk space and is not to meant to run on 3G or 4G networks as it potentially downloads/uploads megabytes of data. Root is not required.

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

Source code:
https://github.com/groestlCoin/agcore

GRS ELECTRUM is working fine.

Hi!

Thanks for the feedback!

Kind Regards,

gruve_p

A Full Node Blackberry Groestlcoin-QT Wallet

After adapting the former Groestlcoin wallet (v2.1.0.6) with Qt Creator, the Groestlcoin-QT full node for Blackberry is ready.
The app is built for developers only and will behave the same as the v2.1.0.6 desktop one. It allows you to store the full blockchain on your mobile phone, access debug console etc.
When using this app, please back up your wallet and email them to yourself!

No feedback is required as this is just made for fun and for really advanced users. Syncing can take up to 2 days.

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.
The application may have unfound bugs and problems.

Groestlcoin-QT Wallet is available in BlackBerry World:
https://appworld.blackberry.com/webstore/content/59990003/

Source code:
https://github.com/GroestlCoin/Groestlcoin-qt-android

Aegis Groestlcoin wallet is developed using the highest standards in the fields of cryptography and information security. It utilises proven security algorithms and protocols to deliver you a first class application/system and user experience. Its main advantages over the original Groestlcoin Blackberry wallet include support for android wear, watch address, NFC tag as encryption and sending GRS over SMS.

If you want to use your Android wearables, track a watch address, use a NFC tag as encryption or send GRS over SMS then Aegis GroestlCoin wallet is the way to go!

Changelog Aegis Groestlcoin Wallet 1.1.6.3 :
• Updated DNS seeds
• Updated Checkpoints
• Updated Protocol number
• Bloom filters enabled

Features
• NFC Security - Store your encryption key separate on an NFC tag
• Keys are encrypted on the device at all times
• Active Groestlcoin wallet - Balance and transactions are continuously updated in real-time
• If your phone is lost or stolen, your GRS is safe due to encryption
• New user interface that is easy to use
• Import of private keys
• Watch addresses - Track watch addresses
• SMS support - If you don't know a person's Groestlcoin address, you can put in their mobile number and they will receive an SMS telling them to reply with their Groestlcoin address. Once they reply, Aegis will take the address and ask you to confirm. The Aegis Wallet app does not read your SMS messages or send them to any place
• Android wear support - Support for android wear notifications, receive address, display qr code and balance
• Backup your Groestlcoins securely using the Aegis Backup feature, then restore your wallet when needed
• Transparant - Aegis Groestlcoin Wallet is free and open source

It is appreciated if feedback of the following is provided:
1. Can you receive coins? (small amounts to avoid losing them)
2. Can you send coins?
3. Can you scan a QR code from another phone?
4. Can you send GRS over SMS?
5. Does it calculate exchange rates properly?
6. How fast is a transaction?
7. Can you use a NFC tag as encryption without problems?
8. Is the watch-only function working properly?
9. Is your android wear working fine with Aegis Groestlcoin wallet?

Important:
Store your secret phrase somewhere safe!

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.

The application may have unfound bugs and problems. To leave feedback: 
1. PM hashengineering on bitcointalk: https://bitcointalk.org/index.php?action=profile;u=155038
2. Email: [email protected]
3. Reports of errors can also be posted in this topic.

Aegis Groestlcoin wallet is available in the Blackberry World:
https://appworld.blackberry.com/webstore/content/59984007/

Source code:
https://github.com/Groestlcoin/groestlcoinj - Groestlcoin Java Library for Aegis Groestlcoin wallet
https://github.com/Groestlcoin/AegisWallet - The Aegis GroestlCoin wallet

Electrum-grs Blackberry is a lightweight "thin client" Groestlcoin Blackberry wallet based on a client-server protocol. Its main advantages over the original Groestlcoin Blackberry wallet include support for not requiring to sync with the blockchain.

In order to bring Groestlcoin to the mainstream masses the Electrum-grs Blackberry wallet (v0.5.22) is ready for testing. The app allows you to send and receive Groestlcoins on your device without syncing the blockchain. When using this app, please store your secret phrase and email them to yourself! Then your coins can be retrieved even if you loose your phone. Furthermore, this puts the user in total control of their funds at any given time.

Electrum-grs Blackberry implementations:
BIP-0032 to implement a hierarchical deterministic wallet
BIP-0039 to implement a mnemonic code of mnemonic sentence for the generation of deterministic wallets (process for turning in into a BIP-0032 seed)

Changelog Groestlcoin Electrum GRS v1.5.25 :
• Improved UI for setting a BIP39 passphrase
• Fixed memory leak when restoring a wallet
• Fixed crashes on some devices
• Possibility to sign and verify messages
• Account details screen to view the public key
• Some UI optimizations
• Bug fixes
• Increase the default size of the recovery phrase
• Can set an amount in receive screen
• Small optimizations when handling the QR code and transactions
• Added ability to spend own unconfirmed change funds
• Support payment URIs requests from browsers and other apps

Features
• Exchange rates for various national currencies
• Manual receiving address management (enable in settings)
• Wallet only needs to be backed up once, on initial creation
• Wallet backup consists of simple list of 12 common words (BIP-0039)
• Empty the wallet with 1 click
• Automatic connectivity management with fast reconnects and detection of network change
• Password protect your recovery phrase
• Top security - Electrum-grs uses bank grade technology. Your money is kept safe by guaranteeing that your private keys will never leave your gadget. The user has absolute control
• Warning if there are no connections to the Electrum-GRS servers
• Click on any addresses to edit the label or copy it
• Support payment URIs requests from browsers and other apps

It is appreciated if feedback of the following is provided:
1.  Can you receive coins? (small amounts to avoid losing them)
2.  Can you send coins?
3.  Can you scan a QR code from another phone.
4.  Can you request coins via email or other Blackberry service?
5.  Does it calculate exchange rates properly?
6.  How fast is a transaction?

Important:
Store your secret phrase somewhere safe!

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.

The application may have unfound bugs and problems. To leave feedback: 
1. PM hashengineering on bitcointalk: https://bitcointalk.org/index.php?action=profile;u=155038
2. Email: [email protected]
3. Reports of errors can also be posted in this topic.

Groestlcoin-GRS Blackberry is available in the Blackberry World:
https://appworld.blackberry.com/webstore/content/59983243/

Source code:
https://github.com/Groestlcoin/groestlcoinj - Groestlcoin Java Library (for the Blackberry App and possibly other software)
https://github.com/Groestlcoin/android-electrum-grs - Groestlcoin Blackberry Electrum-grs

A BIP-0032/-0039/-0044 compatible Hierarchical Deterministic Groestlcoin Wallet

After a measure of hard work adapting the latest Wallet32 (v0.3.17) for Blackberry to Groestlcoin, the Groestlcoin wallet32 beta (v0.1.3) is ready for testing. The app allows you to send and receive Groestlcoins on your device using QR codes and URI links. When using this app, please store your secret phrase and email them to yourself! Then your coins can be retrieved even if you loose your phone.

Groestlcoin wallet32 implementations:
BIP-0032 to implement a hierarchical deterministic wallet
BIP-0039 to implement a mnemonic code of mnemonic sentence for the generation of deterministic wallets (process for turning in into a BIP-0032 seed)
BIP-0044 to implement a logical hierarchy for deterministic wallets based on an algorithm described in BIP-0032 (specific format of a BIP-0032 wallet)

Changelog Groestlcoin Wallet32 v0.1.3h :
• Updated DNS seeds
• Updated Checkpoints
• Updated Protocol number
• Bloom filters enabled
• Changed all KeyCrypts to Groestl

Features
• Multiple logical "accounts" within each wallet.
• Fresh receive and change addresses are used for each transfer.
• Wallet only needs to be backed up once, on initial creation.
• Wallet backup consists of simple list of 12 common words (BIP-0039).
• Same wallet may be securely accessed concurrently from multiple devices.
• Wallet data is protected by Groestl passcode.
• Import paper wallets and sweep them.

It is appreciated if feedback of the following is provided:
1.  Can you receive coins? (small amounts to avoid losing them)
2.  Can you send coins?
3.  Can you scan a QR code from another phone.
4.  Can you request coins via email or other Blackberry service?
5.  How long does it take to sync the blockchain?
6.  How much space does it take up on your phone?
7.  Does it calculate exchange rates properly?

Important:
Store your secret phrase somewhere safe!

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.

The application may have unfound bugs and problems. To leave feedback: 
1. PM hashengineering on bitcointalk: https://bitcointalk.org/index.php?action=profile;u=155038
2. Email: [email protected]
3. Reports of errors can also be posted in this topic.

Groestlcoin Wallet32 is available in the Blackberry World:
https://appworld.blackberry.com/webstore/content/59983902/

Source code:
https://github.com/Groestlcoin/groestlcoinj - Groestlcoin Java Library (for the Blackberry App and possibly other software)
https://github.com/Groestlcoin/GroestlCoin-Wallet32 - The Groestlcoin wallet32 Blackberry Source code

A BIP-0032 compatible Hierarchical Deterministic Groestlcoin Wallet

After adapting our latest Groestlcoin Android wallet (v0.24) to Blackberry, the Groestlcoin Blackberry wallet beta (v0.24) is ready for testing.
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 loose your phone.

Changelog Groestlcoin Wallet 4.46.2 :
• Automatically close send coins dialog if payment was successful. This can be disabled in the settings.
• Adjusts to the new network fee rules imposed by Groestlcoin Core.
• Now requires Android 4.0.3 (ICS) for all subprojects.
• Hint to enable storage encryption.
• Allow raising the fee of an unconfirmed transaction. Uses child-pays-for-parent (CPFP).
• Pay the default fee for sweeping paper wallets.
• Setting for own name, to be added as a label/memo to payment requests.
• List animations for network monitor.
• Migrate build from Maven to Gradle. This should make things easier for Android Studio users.
• In-app payments integration (integration-android) now available on Maven Central and jCenter.
• Nice slide-in animation for sent payment.
• Tint incoming transactions in green, outgoing in red.
• Tint action bar labels.
• Material design for list of transactions.
• Update android-maven-plugin to 4.2.0, so we can use AARs.
• Use action bar submenu for filtering wallet transactions, rather than a ViewPager.
• Speed up transactions list.
• Update QR-code scanner to ZXing 3.2.0.
• Show derived addresses in address book under "your addresses".
• Show "to addresses" of received payments, rather than "from addresses".
• Speed up blockchain sync.
• Improve entry of password in backup wallet dialog.
• Share current wallet address by tapping on it.
• Update dialogs to material theme on Lollipop devices.
• Show and share extended public key. This can be used to grant read-only access to your wallet. The new option is available in the diagnostics settings.
• Record fiat amount for sent payments.

It is appreciated if feedback of the following is provided:
1.  Can you receive coins? (small amounts to avoid losing them)
2.  Can you send coins?
3.  Can you scan a QR code from another phone.
4.  Can you request coins via email or other Blackberry service?
5.  How long does it take to sync the blockchain?
6.  How much space does it take up on your phone?
7.  Does it calculate exchange rates properly?
8.  Are you able to sweep paper wallet?

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.

The application may have unfound bugs and problems. To leave feedback: 
1.  PM hashengineering on bitcointalk: https://bitcointalk.org/index.php?action=profile;u=155038
2.  Email: [email protected]
3.  Reports of errors can also be posted in this topic.

You can donate in the app directly to Hashengineering for his hard work. On the menu go to "donate"

Groestlcoin Wallet is available in Blackberry world:
https://appworld.blackberry.com/webstore/content/59965920/

Source code:
https://github.com/Groestlcoin/groestlcoinj - Groestlcoin Java Library (for the Blackberry App and possibly other software)
https://github.com/Groestlcoin/groestlcoin-wallet - The Groestlcoin Blackberry Wallet Source code

MultiGroestl HD is a lightweight "thin client" Groestlcoin wallet for Windows, MacOS and Linux based on groestlcoinj. Its main advantages over the original Groestlcoin client include support for HD wallet, and not requiring the download of the entire block chain.

Using the experience gained from the creation of MultiBit Classic we have been working full time on producing a wallet that makes Groestlcoin accessible for ordinary mainstream users. Our mission was to remove as much complexity and unnecessary functionality as possible leaving only what is essential for a normal user of Groestlcoin. We think that MultiGroestl HD achieves that goal.
If you are an ordinary user of Groestlcoin and simply want a wallet that just works without hassle, then MultiGroestl HD is the right choice for you.

Features
• Suitable for mainstream users
• Uses hierarchical deterministic (HD) wallet standards (BIP32 and BIP44 for account 1 only)
• Support for automatic locally encrypted cloud backups through SpiderOak, Dropbox and so on
• Configurable to suit your preferences
• Pure SPV - connect directly to the Groestlcoin network.
• No servers just the Groestlcoin network using the Groestlcoinj library
• Simple and intuitive user interface - big accessible controls each with a clear purpose
• No worrying about losing private keys any more - use your "wallet words" (seed phrase) to restore them
• Fast and lightweight block chain download just like MultiGroestl Classic (SPV) about 5MB overall
• Private Contacts database with private notes and tags
• Private Payments database with integrated exchange rates
• Adjustable fees
• Adjustable units
• Export transactions with spot rates to a financial package in standard CSV format
• Themes to suit different lighting conditions
• Available in many languages
• Open source under modified MIT licence
• Random peer discovery (plus it will use your local Groestlcoin Core if you are running one)
• Tor support out of the box (optional)
• All data is encrypted locally using entropy gathered from your wallet words (12, 18 or 24)
• All data automatically backed up to a location of your choice (encrypted)
• Detailed transaction information
• Sign/verify of Groestlcoin messages - use Copy/Paste All to fill all fields in one click
• Simple self-contained installer for Windows, OS X and Linux
• Various wallet management tools such as emptying a wallet with accurate fee calculation

Disaster recovery features
Everybody experiences data loss at some point. Here is how you are shielded from this using MultiGroestl HD:
• You lose your password - click Restore on credentials screen and recover it from local backup with your "wallet words" (seed phrase)
• You delete all your local backups (hard drive error) - automatic restore from cloud backup
• You delete all your local and cloud backups (stolen laptop) - select "Restore from wallet words" and follow the instructions
• You forget your wallet words - unlock your firesafe and retrieve the laminated paper copy you made

It is appreciated if feedback of the following is provided:
1.  Can you receive coins? (small amounts to avoid losing them)
2.  Can you send coins?
3.  Can you scan a QR code from another phone.
4.  Can you sign/verify messages?
5.  How long does it take to sync the blockchain?
6.  Does it appear in your language?
7.  Does it calculate exchange rates properly?

If the blockchain does not synchronise or is stuck, simply go to manage wallet - repair wallet.  The app will synchronise very fast (there is no need for closing the program). 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.

The application may have unfound bugs and problems. To leave feedback: 
1. PM me
2. Email: [email protected]
3. Post reports of erros in this topic.

Important:
Store your walet words somewhere safe!

You can download it using the links below and be up and running with Groestlcoin in 5 minutes.
Download the Linux wallet here: https://github.com/GroestlCoin/multigroestl-hd/releases/download/v0.1.5/multigroestl-hd_unix_0_1_5.sh
Download the OSX DMG Wallet here: https://github.com/GroestlCoin/multigroestl-hd/releases/download/v0.1.5/multigroestl-hd_macos_0_1_5.dmg
Download the Windows Wallet here: https://github.com/GroestlCoin/multigroestl-hd/releases/download/v0.1.5/multigroestl-hd_windows-x64_0_1_5.exe

Source code:
https://github.com/GroestlCoin/groestlcoinj-alice - Groestlcoin Java Library for MultiGroestl HD
https://github.com/GroestlCoin/multigroestl-hd - The MultiGroestl HD Wallet Source code

MultiGroestl Classic is a lightweight "thin client" Groestlcoin wallet for Windows, MacOS and Linux based on groestlcoinj. Its main advantages over the original Groestlcoin client include support for opening multiple wallets simultaneously, and not requiring the download of the entire block chain.

If you are an ordinary user of Groestlcoin and simply want a wallet that just works without hassle, then MultiGroestl Classic is the right choice for you.

Changelog MultiGroestl Classic v0.5.19 :
• Updated DNS seeds
• Updated Checkpoints
• Updated Protocol number
• Bloom filters enabled
• Upgrade to Install4j as installer
• New utility "Tool | Check Private Keys"
• Stronger branding as MultiGroestl Classic to help distinguish it from our new wallet, MultiGroestl HD
• Adjust your transaction fees using a fee slider
• Link in header to make it easy for you to try MultiGroestl HD

Features
• Multiple wallets can be open at the same time
• Quick and easy to install across all major desktop operating systems (Windows, Mac, Linux)
• Secure by design - all private keys are kept encrypted on your local machine (or on a USB stick)
• Faster - Synchronizes with the network by downloading the block headers only very quickly
• Lighter - It does not require a new user to download the entire Groestlcoin chain and store it
• Easy - no need to search for extra nodes and edit the conf file
• Shows the last GRS to fiat rates from Poloniex
• Import and export your private keys
• Chart of your balance over the last 30 days
• Free and decentralised - Open Source under MIT license
• International - multiple languages

It is appreciated if feedback of the following is provided:
1.  Can you receive coins? (small amounts to avoid losing them)
2.  Can you send coins?
3.  Can you scan a QR code from another phone.
4.  Does the graphic view work for you?
5.  How long does it take to sync the blockchain?
6.  Does it appear in your language?
7.  Does it calculate exchange rates properly?

If the blockchain does not synchronise or is stuck, simply go to Tools - reset Blockchain and Transactions.  The app will synchronise very fast (there is no need for closing the program). 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.

The application may have unfound bugs and problems. To leave feedback: 
1. PM me
2. Email: [email protected]
3. Post reports of erros in this topic.

Important:
MultiGroestl Classic uses a filename multigroestl.wallet instead of wallet.dat (like in Groestlcoin Core)
• Location Windows: Navigate to C:\Users\USER NAME\AppData\Roaming\multigroestl (or open windows explorer and enter %appdata%\MultiGroestl) and back up your multigroestl.wallet file by making a copy of it and moving it to a secure location.
• Location Mac: Navigate to ~/Libarary/Application Support/multigroestl and back up your multigroestl.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 Linux wallet here: https://github.com/GroestlCoin/multigroestl/releases/download/v0.5.19/multigroestl-classic_unix_0_1_59.sh
Download the OSX DMG Wallet here: https://github.com/GroestlCoin/multigroestl/releases/download/v0.5.19/multigroestl-classic_macos_0_1_59.dmg
Download the Windows Wallet here: https://github.com/GroestlCoin/multigroestl/releases/download/v0.5.19/multigroestl-classic_windows-x64_0_1_59.exe

Source code:
https://github.com/GroestlCoin/groestlcoinj-mb-alice - Groestlcoin Java Library for MultiGroestl Classic
https://github.com/GroestlCoin/multigroestl - The Multigroestl Classic Wallet Source code

A Full Node Android Groestlcoin-QT Wallet

After adapting the former Groestlcoin wallet (v2.1.0.6) with Qt Creator, the Groestlcoin-QT full node for Android (ARM based) is ready.
The app is built for developers only and will behave the same as the v2.1.0.6 desktop one. It allows you to store the full blockchain on your mobile phone, access debug console etc.
When using this app, please back up your wallet and email them to yourself!

No feedback is required as this is just made for fun and for really advanced users. Syncing can take up to 2 days.

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.
The application may have unfound bugs and problems.

Groestlcoin-QT Wallet is available in the Google play store:
https://play.google.com/store/apps/details?id=com.groestl.core

Source code:
https://github.com/GroestlCoin/Groestlcoin-qt-android