How to get logs of a transaction without ABI ?

[mentalrob]

Hi,
i want to get the Transfer logs of a specific transaction that sent to a contract. But i don't have the ABI for that contract. And also i want to do it with STATICCALL function. I guess i can use provider.call function but i didn't understand the output this function giving.

How can i parse the result of provider.call or how can i gather Transfer logs from the transaction without sending it to mainnet ?

[zemse]

I see so you want to simulate the transaction and see it's logs, without actually getting the tx in a block. It's possible to use using trace API, but for that you need an archive node or use some online service. Alchemy can open trace APIs if you purchase their pro version. I'm not sure if Infura also allows access to trace API.

[ricmoo]

What are you trying to do with these logs? If you don't create a transaction on the network, there are no logs. Are you just trying to create the serialized topics?

If so, you could just use:

iface = new utils.Interface([ "event Transfer(address indexed from, address indexed to, uint256 amount)" ]);
console.log(iface.encodeFilterTopics("Transfer", [ from, to ]));

Otherwise, you will likely need to use the solution @zemse suggested, using an archive node with the trace API.