Look up a transaction's tax classification

Enter a transaction hash and the Classification Explorer returns what the engine sees: the canonical category, the US tax treatment, a confidence score, and the reasoning, from the same engine behind the API. No wallet connection, ever; it works from the hash alone.

How it works

Enter a hash (or follow a shared link; every result has a ?hash= permalink). Chain detection from a bare hash runs across 10 major networks; for the rest of the 100+ chains, pick the chain. A detected chain is not the same as full protocol coverage on that chain. The result shows receipt-derived asset movements (sent / received / gas) plus one primary category and the treatment that follows from it, with reasoning. That is not a full per-action row for every protocol hop inside a multi-call hash. When the engine cannot honestly assert a single treatment, you see needs_review rather than a filled-in guess. Multi-action hashes may still surface one primary category today. Act on needs_review and the treatment block, not on the confidence integer. A high score without a review flag still means the engine asserted a treatment; it is not a measured accuracy rate.

Free to try

Anonymous use includes 10 classifications a day; the built-in sample hashes and repeat lookups are free and do not count. A free Developer account raises that to 250 billable transactions a month and adds API and MCP keys with the same pool. Paid plans are on the pricing page.