What actually leaves

Before You Sign

Paste a transaction hash or the unsigned payload your wallet is about to ask you to sign. Works on Ethereum, Base, Arbitrum, Optimism, and Polygon.

Auto looks up a hash on Ethereum, Base, Arbitrum, Optimism, and Polygon. JSON is decoded here and is not broadcast.

  1. 1

    Paste

    A hash, an explorer link, or the unsigned JSON from the wallet.

  2. 2

    Read

    Approvals, permits, and transfers — including unlimited spend and NFT master keys.

  3. 3

    Watch

    A short lie-versus-reality clip of what leaves the wallet if you sign.