{"keys":{"v1":"YauA76LuX6wR5EOI6IhV3l\/rSN04TxllJZudxeXtedQ="},"note":"Chiavi pubbliche Ed25519 (base64, 32 byte raw). Verifica: sodium_crypto_sign_verify_detached(base64_decode(signature), hex2bin(payload_sha256), base64_decode(pubkey))"}