✍️ Sign & Verify

Sign a message with an ed25519 key, the way wallets do for signMessage, or verify a message signature.

Secret key: base58, JSON byte array or hex (32-byte seed or 64-byte keypair)

Message Message encoding

Runs locally in your browser. Don't paste keys that hold real funds.

Public key (address) Message Message encoding Signature (base58, hex or base64)