Module fingerprint 

EVM event fingerprint computation.

The fingerprint of an EVM event is the keccak256 hash of its canonical signature string, e.g.: keccak256(“Swap(address,address,int256,int256,uint160,uint128,int24)”) → 0xc42079f94a6350d7e6235f29174924f928cc2ac818eb64fed8004e115fbcca67

For raw events, topics[0] IS the fingerprint — we do not need to recompute it.

Functions

from_topics

Extract the fingerprint directly from a raw EVM event (topics[0]). Returns None if topics is empty or the first topic is malformed.

keccak256_signature

Compute the keccak256 fingerprint of an event signature string. Input: "EventName(type1,type2,...)" — the canonical ABI signature.