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Assume i have the address of a contract, and now i would like to retrieve the information for its creation transaction. I used getCode(), but return bytecode for the contract, which is different. If i could get the hash of the creation transaction, i could easily retrieve its information.
Any idea of how to retrieve, at least, the hash of the transaction that created the contract, given only the address of the contract?.
Just get list of "normal" and "internal" transactions for contract address:
https://api.etherscan.io/api?module=account&action=txlist&address=0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae&startblock=0&endblock=99999999&page=1&offset=10&sort=asc&apikey=YourApiKeyToken
https://api.etherscan.io/api?module=account&action=txlistinternal&address=0x2c1ba59d6f58433fb1eaee7d20b26ed83bda51a3&startblock=0&endblock=2702578&page=1&offset=10&sort=asc&apikey=YourApiKeyToken
The very first transaction will most probably be the one that created the smart contract. See documentation for details.
Though it is possible that there were some ether transfer to contract's address before is was deployed.
sort=asc, you may try to play with it :)
Apr 12, 2019 at 10:04