✍️ Sign & Verify

Sign a message with an ed25519 key or a TON mnemonic, or verify a message signature.

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

Private key: 32-byte seed or 64-byte secret key (hex or base64)

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Message is

Message

This signs the message bytes directly with ed25519. Wallet apps may add a prefix or hash first (for example TON Connect's signData), so their signatures differ.

Public key (32 bytes, hex or base64)

Message is

Message Signature (64 bytes, hex or base64)