bait for ethereum lovers One of the greatest problems when it comes to development on ethereum private testnet is it’s slow consensus. Thanks to POW(Proof of Work). This problem also increases with time as the block difficulty increases. So, our testnet becomes slower and slower, block by block. dog: How it feels like to use POW ( ) source One obvious solution to this problem is to use a bigger machine as your miner. But eventually, after some time it will also get slow when it hits some big difficulty rate. But there is another easy solution to this problem, that is to reduce the rate at which blockchain difficulty increases to as low as 1/block.(i.e. your block difficulty rate will increase by only 1 per block) Let’s see how it’s done. Step 1: Clone go-ethereum git clone https://github.com/ethereum/go-ethereum Step 2: Create your own mutant ethereum Open which resides at . Now search for the line given below. consensus.go consensus/ethash/consensus.go return CalcDifficulty(chain.Config(), time, parent) And replace it with return big.NewInt(1) Step 3: Build your mutant ethereum Head out to the root folder(go-ethereum) and run following command. make geth And after you are done, you will see this line at the end. Now, you can run this command to make your globally available. mutant geth sudo mv build/bin/geth /usr/bin Step 4: Let’s test it out Create a custom genesis file like one given below. Now, run the following command to start your private testnet using your mutant geth. geth --datadir ./DataDir init ./genesis.jsongeth --datadir ./DataDir --networkid 1212 --mine --minerthreads=1 --etherbase="0x30f28686aef33adbfbc13797b1d9f5a2f2759f56" console starting up private testnet Now check the block difficulty using console command. admin.nodeInfo at block: 9, difficulty: 9 Voila, you are done. You have just created your own version of ethereum. That deserves some celebration. Learned something? Click the 👏 to say “thanks!” and help others find this article. Hold down the clap button if you liked the content! It helps me gain exposure . Want to learn more? Check out my previous articles… _Experts are suggesting quantum computing may render blockchain obsolete. As the tech giants such as Google and IBM are…_hackernoon.com Quantum Computing: Is it the end of blockchain? _The only blockchain which has blocktime of less than a second: 0.5 sec!_hackernoon.com EOS 101: Getting started with EOS, Part 1 _This post marks the first in a new Quorum series I am starting in an effort to provide some easy to read instructions…_hackernoon.com Quorum 101: Getting started with Quorum _The whole world is going through the blockchain revolution. But wait…is this really what we dreamed of? Present…_medium.com 13 sidechain projects every blockchain developer should know about Clap 50 times and follow me on Twitter: @ vasa_develop

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How to reduce block difficulty in ethereum private testnet

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