An example of such trx is the following (0x1c22498f94934e18b32f2fdb00d8bf091af7cd77e8aeea0191f21efc211aeebc) in particular they have a calldata which UTF-8 decoding looks like 'data:application/json,{"p":"ierc-20","op":"mint","tick":"sneaky","amt":"1","nonce":"1699112316166"}' which seems like a ledger for mints and transfers, but what use does it have? Those trx do not change any ethereum state nor release any events.