For a more interactive view of changes, click here
In our current world; bordering on financial chaos, with tariff wars, Brexit and hyperinflation rife, you can count on Groestlcoin to consistently produce innovation that strikes to take the power away from the few and into the many, even after a full five and a half years
of solid development.
Here is what the team has already announced in the last 3 months since the last development update:
- Added to Ledger Nano X with Electrum-GRS. Offering state-of-the-art security.
- Testnet added to the Ledger Nano X!
- Added to Keepkey hardware wallet with Electrum-GRS.
- Testnet added to Keepkey hardware wallet!
- Added to the new multi-currency wallet, Cobo! With a 12,000 GRS giveaway!
- Groestlcoin Testnet added to ARCHOS Safe-T Mini hardware wallet!
- Groestlcoin started to be accepted at Mind Research & Development!
- Groestlcoin was added to Vertbase cryptocurrency exchange!
- Groestlcoin started to be accepted at Bitcoin-Meister, offering various merchandise.
- Added to the Decentralised Cryptocurrency exchange Neblidex!
- Groestlcoin started to be accepted at Drapis! Offering bee bread, raw honey, comb honey and more!
- BECH32 support added to Binance! Allowing users to withdraw their GRS directly to their Trust Wallet app or any other BECH32-supported app.
- Listed at DynX Decentralised Cryptocurrency Exchange
- Accepted at SpendBTC, offering various giftcards to be purchased with $GRS
- Added to Switchain, a non-custodial cryptocurrency exchange
- Supported at NOWNodes. An innovative platform offering customers unlimited access to public full nodes.
- Groestlcoin added to Melis lite wallet, designed for mobile devices to transact faster than ever.
- Testnet added to Melis lite wallet!
- Supported at NOWPayments, offering instant auto-conversion, easy-to-use API with no hidden fees
- Added to PayCentRUBYdebit card powered by China Union Pay.
- Added to PayCentSapphire debitcard. Powered by Union Pay International!
- Added to PayCent Solitaire debit card, powered by Mastercard!
- See these PayCent cards in action in Korea!
- Added to Digifinex Korea cryptocurrency exchange!
- Accepted at AcceptCryptoz! THE Crypto Directory to find places accepting Crypto near you.
- Added to Cryptwerk! An online directory and map with merchants accepting cryptocurrencies.
- Accepted at 247Bits! Selling cold storage cards and gift cards
What's Being Released Today?
What am I?
Groestl Nodes aims to map out and compare the status of the Groestlcoin mainnet and testnet networks. Even though these networks share the same protocol, there is currently no way to directly compare these coins in a single location. These statistics are essential to evaluate the relative health of both networks.
- Shows Onion (Tor) nodes
- Shows IPv6 nodes
- Supports both main net and test net
- Node Checker – Check the status of a remote node
- Ability to download node data by CSV, JSON or TXT format
- Ability to download unique address data by CSV, JSON or TXT format
- Shows last seen time for each node
- Shows uptime for each node
Groestlcoin Transaction Tool
What am I?
This is a tool for creating unsigned raw Groestlcoin transactions and also to verify existing transactions by entering in the transaction hex and converting this to a human-readable format to verify that a transaction is correct before it is signed.
- Create Raw Unsigned Groestlcoin transactions
- Coin Control
- Generates a QR code for the transaction
- Verifying Transactions
- Compatible with most Groestlcoin wallets including but not restricted to Groestlcoin Core and Electrum-GRS
- Estimates final signed transaction size
- Taking a raw transaction format and shows its Transaction ID, Transaction Inputs and Outputs
What am I?
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, Android TVs and repurposed tablets/phones. If you are a non-technical user of Groestlcoin and want an Android app that makes it easy to run a Groestlcoin Core node by acting as a wrapper, then AG Core is the right choice for you.
- Update to Groestlcoin Core 2.17.2
- Switched to native builds via NDK for Groestlcoin Core resulting in a smaller footprint.
- Added embedded tor
- Added tor pairing support
- TOR upgrade bug fixes
- Improved blockchain Sync progress using getblockchaininfo verificationprogress
- Improved package download progress bar
- Added support for external storage access > Android M
- Added support for Android Oreo, including new notification mechanism
- Added support for Bitcoind RPC cookie
- Change minimum target to Android 21
- Add support for some arm64 android devices
- Various security and bug fixes
- Bump Fee (RBF) improvements – Implemented a new fee-bump strategy that can add new inputs, so now any transaction can be fee-bumped. The old strategy was to decrease the value of outputs (starting with change). We will now try the new strategy first, and only use the old as a fallback.
- Coin Choser improvements
- More likely to construct transactions without change (where possible)
- Less likely to construct transactions with really small change
- Only spend negative effective value coins when beneficial for privacy
- Fix long-standing bug that broke wallets with >65k addresses
- Windows binaries: Now build the PyInstaller bootloader ourselves, as this seems to reduce anti-virus false positives
- Fix performance regression for large wallets
- Fix high-DPI issues related to text fields
- Trezor – Allow bypassing 'too old firmware' error
- Trezor – Use only the Bridge to scan devices if it is available
- Hardware wallets – On Win10-1903, some hardware devices with U2F functionality can only be detected with Administrator privileges. A workaround is to run as Admin, or for Trezor to install the Bridge.
- The AppImage Linux x86_64 binary and the Windows setup.exe are now built reproducibly.
- Fix watch-only wallets that could not bump fee in some scenarios
- Faster transaction signing for segwit inputs or really large transactions.
- Fix BIP70 payment requests could not be paid
- Allow copy-pasting partial transactions from/to clipboard
– Windows Standalone
– Windows Portable
- Android Server Source
– Server Installer Source
– Client Source
– Icon Source
– Locale Source
Android Wallet – Including Android Wallet Testnet
What am I?
Android Wallet is a BIP-0032 compatible hierarchial deterministic Groestlcoin Wallet, allowing you to send and receive Groestlcoin via QR codes and URI links.
Groestlcoin Java Library Source
- SegWit Support:
- Send to native SegWit Bech32 addresses.
- Receive to and spend from native segwit (Bech32) addresses
- Existing wallets without a spending PIN are updated to use native segwit (Bech32) addresses
- Existing wallets with spending PIN can be upgraded by changing or removing the PIN
- Add 3 more block explorers – Groestlsight, Blockbook, Blockchair
- New alert for users with insecure Bluetooth
- Use much less memory when displaying QR codes
- Add a warning dialog regarding a relatively high fee
- Clarify message when fetching/validating the payment request fails
- Backing up makes use of the SAF. For most users, this means encrypted backups are stored on Google Drive, but other cloud storage providers can also be used
- Fix certain payments not showing up until they become confirmed
- Always show fiat amounts directly below Groestlcoin value in the payment history
- The QR Code scanner now supports portrait orientation
- Run circular reveal transition if QR code scanner is started via lower action bar
- Update build to Gradle 3.3+ and Android Plugin for Gradle 2.3.3
- Use Room Persistence Library for access to the address book database
- Adds a network security configuration
- Migrate support libraries and architecture components to AndroidX
- Add another backup reminder
- Remove ability to restore backups from list of Base58-encoded private keys
- The app now requires Android 5.0 (Lollipop) or higher
- Option to request coins to a legacy address (Sender may not support BECH32)
- Double the capacity of the block store
- Make more room for transactions list by scrolling away the balance panel
- Based on GroestlcoinJ 0.15.2
- Disconnects from incompatible peers much faster
- Fix crash on Pixel 2 devices
- Fix crash with hyperinflated fiat currencies
- Fix rarely occurring crash when backing up the wallet
- Fix crashes when opening dialogs at the wrong time
- Fix crash when archiving a wallet backup on certain devices
- Updated checkpoints
- Update Electrum-GRS list with server fingerprints
- Removed unused code and features. Show splash icon whilst the app is loading
- Remove labs feature – Look up wallet names from the DNS
- The FOREGROUND_SERVICE permission is now requested (Android 9 Pie +)
- Support notification channels and adaptive launcher icons (Android 8+)
- Fix app shortcuts (Android 7.1)
- Multiple 'coin received' notifications are now bundled into a notification group (Android 7+)
– Testnet Download
What am I?
Groestlwallet is designed to protect you from malware, browser security holes, even physical theft. With AES hardware encryption, app sandboxing, keychain and code signatures, groestlwallet represents a significant security advance over web and desktop wallets, and other mobile platforms.
Simplicity is groestlwallet's core design principle. Because groestlwallet is "deterministic", your balance and entire transaction history can be restored from just your recovery phrase.
iOS 0.7.3 Changes
- Fix BIP70 payments
- Updated QR Scanner
- Lowered spending limit
- Updated DNS Seeds
- Updated checkpoints
- Fixed URL Scheme
- Fixed GRS Name in mailing
- Fixed crash upon starting in some scenarios
Android v89 Changes
- Use default fee
- Republished on Google Play by removing send_sms permissions
- Lowered spending limit
- Updated to API 28
- Use https instead of http for GRS price
- Updated DNS Seeds
- Updated Checkpoints
– Android Source
- Android Download
– iOS Download
What am I?
Groestlcoinomi is a lightweight thin-client Groestlcoin wallet based on a client-server protocol.
Groestlcoinomi v1.1 Desktop Changes
- Rebranded to Groestlcoinomi
- Updated to use ElectrumX 1.4 protocol
Groestlcoinomi Android v1.6 Changes
Groestlcoin Java Library Source
- Updated to use ElectrumX 1.4 protocol
- Removed unused native code
- Removed local groestlcoinj library (Included from Mavenlocal)
- Updated Gradle
– Android Source Android Download
– Windows Download
– Mac OS Download
– Linux Download
Groestlcoin BIP39 Tool
- Update Samourai Path on BIP32 tab
- Fix BIP38 Support for mainnet and testnet
What is a Cryptocurrency Wallet? submitted by
Use this straightforward guide to learn what a cryptocurrency wallet is, how they work and discover which ones are the best on the market.
A cryptocurrency wallet is a software program that stores private and public keys and interacts with various blockchain to enable users to send and receive digital currency and monitor their balance. If you want to use Bitcoin or any other cryptocurrency, you will need to have a digital wallet. How do they work?
Millions of people use cryptocurrency wallets, but there is considerable misunderstanding about how they work. Unlike traditional ‘pocket’ wallets, digital wallets don’t store currency. In fact, currencies don’t get stored in any single location or exist anywhere in any physical form. All that exists are records of transactions stored on the blockchain.
Cryptocurrency wallets are software programs that store your public and private keys and interface with various blockchain so users can monitor their balance, send money and conduct other operations. When a person sends you bitcoins or any other type of digital currency, they are essentially signing off ownership of the coins to your wallet’s address. To be able to spend those coins and unlock the funds, the private key stored in your wallet must match the public address the currency is assigned to. If public and private keys match, the balance in your digital wallet will increase, and the senders will decrease accordingly. There is no actual exchange of real coins. The transaction is signified merely by a transaction record on the blockchain and a change in balance in your cryptocurrency wallet. What are the different types of Cryptocurrencywallets?
There are several types of wallets that provide different ways to store and access your digital currency. Wallets can be broken down into three distinct categories – software, hardware, and paper. Software wallets can be a desktop, mobile or online.
Are Cryptocurrency wallets secure?
- Desktop: wallets are downloaded and installed on a PC or laptop. They are only accessible from the single computer in which they are downloaded. Desktop wallets offer one of the highest levels of security however if your computer is hacked or gets a virus there is the possibility that you may lose all your funds.
- Online: wallets run on the cloud and are accessible from any computing device in any location. While they are more convenient to access, online wallets store your private keys online and are controlled by a third party which makes them more vulnerable to hacking attacks and theft.
- Mobile: wallets run on an app on your phone and are useful because they can be used anywhere including retail stores. Mobile wallets are usually much smaller and simpler than desktop wallets because of the limited space available on a mobile.
- Hardware: wallets differ from software wallets in that they store a user’s private keys on a hardware device like a USB. Although hardware wallets make transactions online, they are stored offline which delivers increased security. Hardware wallets can be compatible with several web interfaces and can support different currencies; it just depends on which one you decide to use. What’s more, making a transaction is easy. Users simply plug in their device to any internet-enabled computer or device, enter a pin, send currency and confirm. Hardware wallets make it possible to easily transact while also keeping your money offline and away from danger.
- Paper: wallets are easy to use and provide a very high level of security. While the term paper wallet can simply refer to a physical copy or printout of your public and private keys, it can also refer to a piece of software that is used to securely generate a pair of keys which are then printed. Using a paper wallet is relatively straightforward. Transferring Bitcoin or any other currency to your paper wallet is accomplished by the transfer of funds from your software wallet to the public address shown on your paper wallet. Alternatively, if you want to withdraw or spend currency, all you need to do is transfer funds from your paper wallet to your software wallet. This process, often referred to as ‘sweeping,’ can either be done manually by entering your private keys or by scanning the QR code on the paper wallet.
Wallets are secure to varying degrees. The level of security depends on the type of wallet you use (desktop, mobile, online, paper, hardware) and the service provider. A web server is an intrinsically riskier environment to keep your currency compared to offline. Online wallets can expose users to possible vulnerabilities in the wallet platform which can be exploited by hackers to steal your funds. Offline wallets, on the other hand, cannot be hacked because they simply aren’t connected to an online network and don’t rely on a third party for security.
Although online wallets have proven the most vulnerable and prone to hacking attacks, diligent security precautions need to be implemented and followed when using any wallet. Remember that no matter which wallet you use, losing your private keys will lead you to lose your money. Similarly, if your wallet gets hacked, or you send money to a scammer, there is no way to reclaim lost currency or reverse the transaction. You must take precautions and be very careful!
- Backup your wallet. Store only small amounts of currency for everyday use online, on your computer or mobile, keeping the vast majority of your funds in a high security environment. Cold or offline storage options for backup like Ledger Nano or paper or USB will protect you against computer failures and allow you to recover your wallet should it be lost or stolen. It will not, however, protect you against eager hackers. The reality is, if you choose to use an online wallet there are inherent risks that can’t always be protected against.
- Update software. Keep your software up to date so that you have the latest security enhancements available. You should regularly update not only your wallet software but also the software on your computer or mobile.
- Add extra security layers. The more layers of security, the better. Setting long and complex passwords and ensuring any withdrawal of funds requires a password is a start. Use wallets that have a good reputation and provide extra security layers like two-factor authentication and additional pin code requirements every time a wallet application gets opened. You may also want to consider a wallet that offers multisig transactions like Armory or Copay. A multisig or multi-signature wallet requires the permission of another user or users before a transaction can be made.
Multi-currency or single use?
is by far the most well-known and popular digital currency, hundreds of newcryptocurrencies
(referred to as altcoins) have emerged, each with distinctive ecosystems and infrastructure. If you’re interested in using a variety of cryptocurrencies, the good news is, you don’t need set up a separate wallet for each currency. Instead of using a cryptocurrency wallet that supports a single currency, it may be more convenient to set up a multi-currency wallet which enables you to use several currencies from the same wallet. Are there any transaction fees?
There is no straightforward answer here.
In general, transaction fees are a tiny fraction of traditional bank fees. Sometimes fees need to be paid for certain types of transactions to network miners as a processing fee, while some transactions don’t have any fee at all. It’s also possible to set your own fee. As a guide, the median transaction size of 226 bytes would result in a fee of 18,080 satoshis or $0.12. In some cases, if you choose to set a low fee, your transaction may get low priority, and you might have to wait hours or even days for the transaction to get confirmed. If you need your transaction completed and confirmed promptly, then you might need to increase the amount you’re willing to pay. Whatever wallet you end up using, transaction fees are not something you should worry about. You will either pay minuscule transaction fees, choose your own fees or pay no fees at all. A definite improvement from the past! Are cryptocurrency wallets anonymous?
Kind of, but not really. Wallets are pseudonymous. While wallets aren’t tied to the actual identity of a user, all transactions are stored publicly and permanently on the blockchain. Your name or personal street address won’t be there, but data like your wallet address could be traced to your identity in a number of ways. While there are efforts underway to make anonymity and privacy easier to achieve, there are obvious downsides to full anonymity. Check out the DarkWallet
project that is looking to beef up privacy and anonymity through stealth addresses and coin mixing. Which Cryptocurrency wallet is the best?
There is an ever-growing list of options. Before picking a wallet, you should, however, consider how you intend to use it.
Bread Wallet Bread Wallet
- Do you need a wallet for everyday purchases or just buying and holding digital currency for an investment?
- Do you plan to use several currencies or one single currency?
- Do you require access to your digital wallet from anywhere or only from home?
- Take some time to assess your requirements and then choose the most suitable wallet for you.
is a simple mobile Bitcoin digital wallet that makes sending bitcoins as easy as sending an email. The wallet can be downloaded from the App Store or Google Play. Bread Wallet offers a standalone client, so there is no server to use when sending or receiving bitcoins. That means users can access their money and are in full control of their funds at all times. Overall, Bread Wallet’s clean interface, lightweight design and commitment to continually improve security, make the application safe, fast and a pleasure to use for both beginners and experienced users alike.
- Pros: Good privacy & security, beginner friendly, simple & clean, open source software, free.
- Cons: No web or desktop interface, lacks features, hot wallet.
Advanced users searching for a Bitcoin mobile digital wallet, should look no further than mycelium. The Mycelium
mobile wallet allows iPhone and Android users to send and receive bitcoins and keep complete control over bitcoins. No third party can freeze or lose your funds! With enterprise-level security superior to most other apps and features like cold storage and encrypted PDF backups, an integrated QR-code scanner, a local trading marketplace and secure chat amongst others, you can understand why Mycelium has long been regarded as one of the best wallets on the market.
- Pros: Good privacy, advanced security, feature-rich, open source software, free
- Cons: No web or desktop interface, hot wallet, not for beginners
is a relatively new and unknown digital wallet that is currently only available on the desktop. It enables the storage and trading of Bitcoin, Ether, Litecoins, Dogecoins and Dash through an incredibly easy to use, intuitive and beautiful interface. Exodus also offers a very simple guide to backup your wallet. One of the great things about Exodus is that it has a built-in shapeshift exchange that allows users to trade altcoins for bitcoins and vice versa without leaving the wallet.
- Pros: Good privacy & security, beginner friendly, intuitive, easy to use, in-wallet trading, supports multiple currencies, open source software, free.
- Cons: Hot wallet, no web interface or mobile app
Created by Bitpay, Copay
is one of the best digital wallets on the market. If you’re looking for convenience, Copay is easily accessed through a user-friendly interface on desktop, mobile or online. One of the best things about Copay is that it’s a multi-signature wallet so friends or business partners can share funds. Overall, Copay has something for everyone. It’s simple enough for entry-level users but has plenty of additional geeky features that will impress more experienced players as well.
- Pros: Good privacy & security, multisig transactions, multiple platforms & devices, multiple wallet storage, beginner friendly, open source software, free
- Cons: Can be slow & unresponsive, limited user support
Jaxx is a multi-currency Ether, Ether Classic, Dash, DAO, Litecoin, REP, Zcash, Rootstock, Bitcoin wallet and user interface. Jaxx has been designed to deliver a smooth Bitcoin and Ethereum experience. It is available on a variety of platforms and devices (Windows, Linux, Chrome, Firefox, OSX, Android mobile & tablet, iOS mobile & tablet) and connects with websites through Firefox and Chrome extensions. Jaxx allows in wallet conversion between Bitcoin, Ether and DAO tokens via Shapeshift and the import of Ethereum paper wallets. With an array of features and the continual integration of new currencies, Jaxx is an excellent choice for those who require a multi-currency wallet.
- Pros: Good privacy & security, Multi-currency, wallet linking across multiple platforms, great user support, feature rich, user-friendly, free.
- Cons: Code is not open source, can be slow to load
is an open source Bitcoin desktop wallet perfect for experienced users that place emphasis on security. Some of Armory’s features include cold storage, multi-signature transactions, one-time printable backups, multiple wallets interface, GPU-resistant wallet encryption, key importing, key sweeping and more. Although Armory takes a little while to understand and use to it’s full potential, it’s a great option for more tech-savvy bitcoiners looking to keep their funds safe and secure.
- Pros: Good privacy, great security features, multi-signature options, solid cold storage options, free.
- Cons: Only accessible via the desktop client, not for beginners.
is a hardware Bitcoin wallet that is ideal for storing large amounts of bitcoins. Trezor cannot be infected by malware and never exposes your private keys which make it as safe as holding traditional paper money. Trezor is open source and transparent, with all technical decisions benefiting from wider community consultation. It’s easy to use, has an intuitive interface and is Windows, OS X and Linux friendly. One of the few downsides of the Trezor wallet is that it must be with you to send bitcoins. This, therefore, makes Trezor best for inactive savers, investors or people who want to keep large amounts of Bitcoin highly secure.
- Pros: Good security & privacy, cold storage, easy to use a web interface, in-built screen, open source software, beginner friendly.
- Cons: Costs $99, must have device to send bitcoins
The Ledger Wallet Nano
is a new hierarchical deterministic multisig hardware wallet for bitcoin users that aims to eliminate a number of attack vectors through the use of a second security layer. This tech-heavy description does not mean much to the average consumer, though, which is why I am going to explain it in plain language, describing what makes the Ledger Wallet Nano tick. In terms of hardware, the Ledger Wallet Nano is a compact USB device based on a smart card. It is roughly the size of a small flash drive, measuring 39 x 13 x 4mm (1.53 x 0.51 x 0.16in) and weighing in at just 5.9g.
- Screen/device protected by metal swivel cover
- Multi-Currency support
- 3rd-Party apps can run from device
- U2F support
- When recovering wallet from seed, the whole process can be done from the device without even connecting it to a computer!
- Fairly inexpensive (~$65 USD)
Green Address Green Address
- Not as advanced wallet software (no transaction labeling)
- No ability to create hidden accounts
- No password manager
is a user-friendly Bitcoin wallet that’s an excellent choice for beginners. Green Address is accessible via desktop, online or mobile with apps available for Chrome, iOS, and Android. Features include multi-signature addresses & two-factor authentications for enhanced security, paper wallet backup, and instant transaction confirmation. A downside is that Green Address is required to approve all payments, so you do not have full control over your spending
Blockchain (dot) info Blockchain
- Pros: Solid security, multi-platform & device, multi-sig, beginner-friendly, open source software, free.
- Cons: Hot wallet, average privacy, the third party must approve payments.
is one of the most popular Bitcoin wallets. Accessing this wallet can be done from any browser or smartphone. Blockchain.info provides two different additional layers. For the browser version, users can enable two-factor authentication, while mobile users can activate a pin code requirement every time the wallet application is opened. Although your wallet will be stored online and all transactions will need to go through the company’s servers, Blockchain.info does not have access to your private keys. Overall, this is a well-established company that is trusted throughout the Bitcoin community and makes for a solid wallet to keep your currency.
- Pros: Good security, easy to use web & mobile interface, well-known & trusted company, beginner friendly, free.
- Cons: Hot wallet, weak privacy, third party trust required, has experienced outages.