how can I copy Ethereum source code and node software client to modify the data structure to turn it into my own sidechain and how can I build smart contracts in the sidechain so that the sidechain can handle its own smart contracts on it and it has its own deployable sidechain node client software?

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    Tools like Brownies, Truffle, Hardhat can fork any public blockchain and run it locally. Such a functionality is often used for testing during development. But you want to legit run your own ETH blockchain?
    – Sky
    Dec 28, 2022 at 15:34


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