02 · Secret passkeys & Solana

From Face ID to a Solana instruction.

Create a secret passkey, sign a message, and see exactly which bytes a secret passkey wallet would put on-chain. Everything runs in this tab. Nothing is sent anywhere.

A P-256 key, and its vault

No secret passkey is stored in this browser yet. Creating one prompts Face ID, Touch ID, Windows Hello, or a security key. This site keeps only the public key and credential id, in local storage.

Sign something

In a real wallet this would be the serialized transaction. Here, the WebAuthn challenge is sha256(message).