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How Could I pull out smart contract bytecode using web3 and contract address?

Damian Klepacki
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1 Answers1

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Using Web3.js you can easily extract the bytecode for a contract at a certain address using the getCode() function:

getCode

web3.eth.getCode(address [, defaultBlock] [, callback])

web3.eth.getCode("0xd5677cf67b5aa051bb40496e68ad359eb97cfbf8")
.then(console.log);
> "0x600160008035811a818181146012578301005b601b6001356025565b8060005260206000f25b600060078202905091905056"
Shawn Tabrizi
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  • I thought this will be it, but its not. This is getting current sc bytecode, I was looking for something to get bytecode so I can use it to deploy new sc – Damian Klepacki Nov 27 '18 at 18:44
  • It's not that simple unfortunately: https://ethereum.stackexchange.com/questions/7735/bytecode-on-block-chain-different-from-the-one-used-when-deploying – Shawn Tabrizi Nov 27 '18 at 19:41