I am developing the dApp (related to ERC-721 based NFT) which works with my own backend.
I am going to send the result JSON for a smart contract method call to my own backend.
On my backend I want to verify this result JSON data. That's I need to make sure that this result JSON is correct and not fake data.
How can I get this done? Shall I use etherscan API using blockhash and sender's address?
Any help will be appreciated.