Free tool

Verify a Bitcoin wallet signature

Confirm that a signed message was produced by the owner of a Bitcoin address. Supports both legacy P2PKH addresses (starting with 1) and native SegWit P2WPKH addresses (starting with bc1q), using the Bitcoin Core message signing standard.

• ·Signing standard: Bitcoin Core message signing (secp256k1 + Bitcoin magic prefix)
• ·Address formats: Legacy P2PKH (1…) and native SegWit P2WPKH (bc1q…)
• ·Signature format: base64-encoded, 65 bytes
• ·Compatible wallets: Unisat, Bitcoin Core