Verify a hash-based signature.

You do not need this tool to launch a coin, deposit or withdraw. It checks a public signature locally in your browser using the same SHA-256 implementation as the protocol.

Looking for instructions? Read the getting-started guide

1. Load an example. Choose “Load public test vector” below to fill the fields with public example data. If you have your own proof, replace all four fields with its public hexadecimal bytes.
2. Run the check. Choose “Verify signature” to recover the key hash and compare it with the expected value.
3. Read the result. A match confirms the supplied signature and digest agree. It does not confirm an on-chain transaction or ownership.

Use public proof bytes only. Never enter Beam recovery words, wallet recovery phrases or private keys here.

An on-chain authorization also binds the program, vault, key number, action, amount, destination and next key. This tool checks the supplied digest and signature; it does not submit transactions or establish those fields from a transaction receipt.