{
  "keysetVersion": "https://plumblinegrader.com/attestation/keys/v1",
  "about": "Public keys that may sign Plumbline audit records. Format: docs/attestation/KEYS.md. No production key has been published yet; the only key here is the DEMO key, which signs samples only.",
  "issuer": "Plumbline Grader (IROS Systems LLC)",
  "updated": "2026-10-09T00:00:00Z",
  "keys": [
    {
      "keyid": "3843101fb0f165520f8838aeb4053935c6a21627fb07350a783ea5fa0ba4b7de",
      "algorithm": "ed25519",
      "publicKey": "NSZInRo1O2E4bD0uEqc3frqGAF9fqF0z6MkFLXEJgww=",
      "purpose": "demo",
      "label": "DEMO key: signs demonstration samples only, never a real audit record",
      "validFrom": "2026-10-09T00:00:00Z",
      "validUntil": "2027-12-31T23:59:59Z",
      "revoked": null
    }
  ]
}