On-chain scan · Tax year 2025
Find the swaps your 1099-DA never saw
The form is what a U.S. broker sold for you. DEX swaps, wraps and wallet-to-wallet hops live on-chain. Sign the wallet so we can read that public activity and put it next to the form.
Why the wallet is required
Without an address there is nothing to scan. Email cannot see Uniswap, a bridge or a transfer off Coinbase onto this key. The signature is Proof of Key Control — so we scan your address, not one you typed from a stranger.
- We read public Ethereum, Base and Arbitrum indexes
- We flag multi-token transactions (typical swaps/wraps)
- We flag inbound tokens with no paired lot (airdrop / transfer-in / reward pattern)
- No transaction, no token approval, no spend cap
Start the scanAM-SCAN
Proof of Key Control
The sample workpaper is below. This button fills those same lines from the wallet you sign.
What this does: Opens a read-only scan of public chain data for this address.
