Just a reminder that on December 7th, at block number 9069000, Ethereum (ETH) will execute the first phase of its Istanbul hard fork (a little more than 19000 blocks as of writing this). Earlier the hard fork was scheduled to happen today on 4th of December at block 9056000, but the date has been pushed back a bit. The second phase of the hard fork is scheduled for early 2020, though no exact date has been announced yet. The first phase of the Istanbul hard fork is not going to be changing anything related to the PoW mining algorithm hat the project uses at the moment, after the fork Ethereum will still be mined using the Ethash algorithm. The second phase for early next year though will bring a change in the mining algorithm from Ethash to the ProgPow algorithm, rendering the current Ethash ASIC miners useless for Ethereum mining (there are other Ethash cryptos out there though). To see the list of EIPs included in the fork (Ethereum Improvement Proposals). Make sure you upgrade your Ethereum local node if you are running one before the fork occurs in order to avoid possible problems.

To check the time left before Ethereum (ETH) hard forks next at block 9069000…

The Cortex (CTXC) AI on Blockchain crypto project caught our attention recently with the Cortex algorithm getting added in the GMiner 1.80 miner and the recent Binance listing of CTXC. One of the more interesting goals of the project includes implementing AI DApps (Artificial Intelligence Decentralized Applications) on the blockchain, so thinking along the lines of Ethereum with AI and machine learning. The project does seem to have some solid backing, but apparently initially mostly focused on the Asian market and thus not getting a lot of attention outside the continent up until recently. Have in mind that Cortex is just starting to develop and needs more work, even though it has been launched more than a year ago apparently…

As we have mentioned if you are interested in mining Cortex (CTXC), you would probably go for the latest GMiner software, though mind you the developer fee for the Cortex algorithm is pretty high at 5%, unlike the regular 2% for other supported algorithms. There are still just a few mining pools available wit support for CTXC and no wonder the largest one is Russian called Frostypool, though you should easily figure out how to use it. Alternatively you could go for CortexMint or CortexPool. The network is not that big, so apparently not that many users mining currently, though it seems that already half of the total supply of coins is in circulation and there is a lot of trading going on on some of the large Asian exchanges such as OKEx, Bithumb, Huobi etc. where most of the trading volume is.

It is interesting to note that the hashrate reported by the GMiner in G/s is not the same as the hashrate that you see poolside in H/s, so this is creating some confusion among users and is making it harder to actually calculate how much you can earn mining CTXC. It is best to see your poolside hashrate and then do the math and not rely on G/s data from the miner, but here is an estimate on what you can expect to earn from 6x GTX 1080 Ti at the moment – around 50000 BTC satoshi equivalent or about $3.6 USD equivalent per day.

The latest update of the AMD OpenCL GPU miner lolMiner 0.9.2 brings some extra performance boost for the GRIN-AT31 (Cuckatoo 31 algorithm) on 8GB and 16GB video cards of up to +5% on AMD Polaris and AMD Vega GPUs and up to +10 on AMD Navi GPUs. The latest version also adds experimental support for GRIN-AT31 and Polaris, Vega and VII using AMD ROCm drivers under Linux. The lolMiner 0.9.2 has added range checks to GRIN-AT31 code for improved stability as well as added function to call external watchdog scripts in case a GPU fails during mining (if the miner detects no action of a GPU for at least a minute it will call the included reboot scripts).

Grin C31 lolMiner 0.9.2 expected hashrates:
– AMD Radeon VII (stock): 1.79 G/s
– AMD Radeon VII (1340/1000/0.825v, 130W): 1.37 G/s
– AMD Vega FE (stock): ~1.3 G/s
– AMD Vega 56 (1220/900/0.825v, 130W): 1.0 G/s
– AMD RX 5700 (Red Dragon, stock): 0.91 G/s
– AMD RX 580 8GB: 0.56 G/s

We remind you that lolMiner is a closed source OpenCL GPU miner available for Windows and Linux as pre-compiled binaries only and that there is a 1% developer fee for using the software for all supported algorithms. The miner should work on Nvidia GPUs with OpenCL, however stability and performance could be far from optimal, so it is best for use with AMD GPUs. For Nvidia GPU miner with support for Cuckatoo 31 you can check out the latest GMiner, NMBiner or some of the other option like BMiner etc.

To download and try the latest lolMiner 0.9.2 OpenCL miner for Windows or Linux…

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