Free tool

What is this contract?

Paste any contract address. We'll tell you which protocol it belongs to, the methods it exposes, and whether it's been flagged as spam.

For informational purposes only — not tax advice. Lookups draw on ChainTax's protocol registry and the transactions ChainTax has already classified.

Supports Ethereum, Arbitrum, Optimism, Base, and Polygon.

How the lookup works

1

Resolve

We check the address against ChainTax's protocol registry — the same source the classifier uses for Uniswap, Aave, Lido, Curve, and the rest.

2

Inspect

We pull every method signature ChainTax has decoded calling this contract from the existing transaction corpus and resolve each one via 4byte.directory and OpenChain.

3

Flag

We cross-check the address against community blocklists (MetaMask, ScamSniffer, CryptoScamDB, GoPlus) so you can see whether ChainTax treats it as spam.

Want your full wallet sorted?

This tool tells you about one contract. Add your wallet to ChainTax to see every transaction classified with full working, cost basis tracked, and an HMRC-ready tax report.