Receipt Signing Keys

{
  "keys": [
    {
      "kid": "key-001",
      "algorithm": "Ed25519",
      "public_key": "PLACEHOLDER_PUBLIC_KEY_32_BYTES",
      "activated_at": "2026-05-14T00:00:00Z"
    }
  ],
  "historical_keys": [],
  "verification_url": "https://gpodz.com/trust/verify-receipt"
}

Public key will be replaced with the real Ed25519 key in Sprint 008. Historical keys are retained forever for receipt verification.