One of the major issues with the GRIN project has been resolved – the lack of an easy to use GUI wallet for Windows users… and there is more than one option available. The design of the Grin project does not rely on using addresses like we are used to with most other crypto currencies as a means to send and receive coins and that makes transfers a bit more complex. The GrinPurse project is not an official wallet, but a third party project that has been available for a bit already as closed source software developed by a crypto exchange, though the source code has now been made available as well. GrinPurse is not only available for Windows users, but also for Mac OS users.

GrinPlusPlus (Grin++) is a bit more complex project that offers a complete Windows-compatible C++ implementation of the Grin (MimbleWimble) protocol meaning a full node and a GUI wallet for Windows users. More advanced users and ones that want to be able to run their own local node along with the GUI wallet on Windows can opt out to try this particular project that has been available for a few days as a mainnet release. Now not only more advanced Linux users, but also regular users are able to easily use their own wallet and not rely on exchanges to store their Grin coins.

It is worth mentioning that BitGrin, a fork from Grin, has released an official GUI wallet for Windows and Mac OS users last month for their project and that has sparkled some controversy why Grin still does not offer an official GUI wallet (they still do not). Mac OS users had a solution for a while for a simple GUI wallet in the fork of the SuperGrin Wallet released back in February.

The newest NBMiner 21.4 update comes with further improvement in the performance for Grin31 mining (Cuckatoo31 algorithm), though slight one from what we are seeing, the miner is still probably the fastest Nvidia GPU miner for Cuckatoo31. There is also performance improvement for Grin29 (Cuckaroo29) and AE (Aeternity) on Nvidia RTX cards and the current level of performance is almost on par with other competing miners in terms of hashrate on GTX 1080 Ti GPUs, though the latest GMiner 1.36 still has a slight performance advantage on GTX 1080 Ti under Windows at least.

NBMiner v21.4 also fixed Grin31 compatibility on Windows 7 with 8GB video cards and comes with a new option to reduce the range of power consumption by multi-gpu rig (--cuckatoo-power-optimize). The use of this option could prevent power spikes from causing problems with power supplies that are near their limit and thus can help improve mining system stability, though there may be some drop of mining performance as a result, so do try the option and see it it helps or not improve system stability and ho it affects mining performance in your case.

We remind you that the NBMiner is a closed source GPU miner for Nvidia CUDA that is available for both Windows and Linux operating systems and it has the following developer fee built-in: tensority + ethash – 3%, tensority (Pascal GPUs) – 2%, tensority (Turing GPUs) – 3%, ethash – 0.65%, cuckaroo29 and cuckatoo31 – 2%.

To download and try the latest NBMiner 21.0 Nvidia GPU Miner for Windows/Linux…

The VeriBlock (VBK) project has recently launched its mainnet after a long period of testing and has just finished an IEO (Initial Exchange Offering) on the Bittrex exchange with all coins available in it sold in just about 10 seconds, so apparently there is quite the interest. VeriBlock’s technology supposedly delivers Bitcoin-level security to both new and established blockchain and cryptocurrency projects that may otherwise be vulnerable. This enables crypto coin development teams to focus on the innovative features and functionality of their project, rather than worrying about possible attacks.

VeriBlock is both PoW (Proof of Work) and PoP (Proof-of-Proof) coin, so you can mine it with your GPUs or spend some Bitcoins to PoP mine it. PoW miners are responsible for creating the blocks, providing the blockchain with intermediate consensus, and providing blockchains inheriting security through VeriBlock with a PoW-powered first line of defense. PoP miners are responsible for publishing a representation of the current state of the VeriBlock blockchain (and by proxy, all blockchains secured by VeriBlock) to Bitcoin in a fully DTTP manner.

Here we are going to focus on PoW mining (vBlake2 algorithm) with AMD and Nvidia GPUs, for both of which there are miners available and a number of pools. Do note that although there are no ASIC miners available currently for VBK, apparently there are FPGAs already available for mining VeriBlock with hashrate equal to that of about three rigs with GTX 1080 Ti (~18 GHS). Using the latest nodecore pow CUDA miner 0.3.11 on GeForce GTX 1080 Ti you can expect to get around 800 MHS hashrate per card, while AMD GPU owners with the latest AMD VeriBlock miner the expected hashrate per Radeon RX 580 8GB should be around 300 MHS (similar to the performance of GTX 1060 or P106 GPUs).

Since the nodecore miners are not yet that stable and fully optimized and sometimes pools are not very responsive, it is wise to use a simple restart script to make sure that your mining rigs won’t end up staying idle. Here is an example BAT file for Windows for the miner:

:loop
Veriblock.exe -o vbk.luckypool.io:8501 -u VHmonhpN6fiuyNdJgGnwsJ741CvkZY -p x
goto loop

The above BATCH file should be fine for the miner cleanly exiting after it encounters some error, however on some Windows systems we have seen the miner crashing with an error window popping up and the above code will not help in such cases. If you experience such instability, then you can add a bit more automation in order to restart the miner every 30 minutes (1800 seconds) with the example code below:

:loop
start Veriblock.exe -o vbk.luckypool.io:8501 -u VHmonhpN6fiuyNdJgGnwsJ741CvkZY -p x
timeout /t 1800
taskkill /f /im Veriblock.exe
goto loop

In order to mine VeriBlock (VBK) locally, since it is not yet available on an exchange (it should very soon be active on Bittrex after the IEO), you will need to install the latest VeriBlock Nodecore 0.4.1, sync the VBK blockchain and then run the Nodecore Wallet GUI 0.4.0 (Java-based platform independent GUI). There are a number of mining pools available already, though most of them are not very user friendly and it is hard to keep a rack on your mining rewards (it is easier to track them at the local wallet than on the mining pool) we would recommend that you try the vbk.luckypool.io as it is currently the most user-friendly visually and functionality wise VBK mining pool out there.

In order to check the current state of the VeriBlock (VBK) network…

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