{
  "evidence_record_id": "ser_d23eec25d475e2c43726cbc2cbd43a10",
  "schema": "ser.v0.1.legal_ai_output",
  "payload_hash": "d23eec25d475e2c43726cbc2cbd43a10f2b660203966fe10186163176a9f43e6",
  "merkle_root": "35019e27369dfced7856eb08de72fc19bde43ca5a356a1c548f51e3b4c16a3e6",
  "transparency_anchor": {
    "status": "anchored",
    "rekor_log_id": "108e9186e8c5677a7b3837524cb584206ad1dfcacdcbb4befe72eff3cb4529d82e66d9d7de4eebf1",
    "rekor_log_index": 3828920751,
    "rekor_url": "https://rekor.sigstore.dev/api/v1/log/entries/108e9186e8c5677a7b3837524cb584206ad1dfcacdcbb4befe72eff3cb4529d82e66d9d7de4eebf1",
    "signing_algorithm": "ecdsa-p256-sha256",
    "public_key_pem": "-----BEGIN PUBLIC KEY-----\nMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEOYGzi6mCnrh1tl29Lh3GkbkfoPRQ\ndZoKyDt8/JJ7T5nPjeofg4OEsH0M7QziNku7MAGPqR2Zvv9MftCbUlA+/Q==\n-----END PUBLIC KEY-----",
    "anchored_at": "2026-11-12T08:43:57.250Z"
  },
  "surface": {
    "tier": "public_sandbox",
    "signing_algorithm_in_use": "ecdsa-p256-sha256-ephemeral",
    "signing_algorithm_in_production_tenants": "ed25519-hardware-backed-planned",
    "note": "This public MCP endpoint signs with an ephemeral ECDSA P-256 / SHA-256 keypair generated per request, for live Sigstore Rekor anchoring. A hardware-backed production signing tier is planned; no production tenant exists yet. The Sealed Evidence Record format and Rekor anchoring are designed to stay the same on that tier; only the signing key would change. See verdict.systems/security."
  },
  "chain_of_custody": {
    "sequence": 1,
    "prior_root": null,
    "prior_anchor": null,
    "signer": "unbound_ephemeral_key",
    "transparency_anchor": {
      "status": "anchored",
      "rekor_log_id": "108e9186e8c5677a7b3837524cb584206ad1dfcacdcbb4befe72eff3cb4529d82e66d9d7de4eebf1",
      "rekor_log_index": 3828920751,
      "rekor_url": "https://rekor.sigstore.dev/api/v1/log/entries/108e9186e8c5677a7b3837524cb584206ad1dfcacdcbb4befe72eff3cb4529d82e66d9d7de4eebf1",
      "signing_algorithm": "ecdsa-p256-sha256",
      "public_key_pem": "-----BEGIN PUBLIC KEY-----\nMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEOYGzi6mCnrh1tl29Lh3GkbkfoPRQ\ndZoKyDt8/JJ7T5nPjeofg4OEsH0M7QziNku7MAGPqR2Zvv9MftCbUlA+/Q==\n-----END PUBLIC KEY-----",
      "anchored_at": "2026-11-12T08:43:57.250Z"
    },
    "retention_class": "ephemeral_compute"
  },
  "legal_review": {
    "human_review_status": "not_required",
    "attorney_reviewer": null,
    "citations": [
      "sha256:93b6d215e9cd87749ec3a843647a7c785ace5e1dc67c2a89e926b09b3f30fd95 https://verdict.systems/aiuc-1/workpapers/v1.1/Verdict-E015-Workpaper-Package.pdf",
      "sha256:8302cb664c229e99a784af6010bc13bb90fac21d1e6c542e5542eab308e6384a https://verdict.systems/aiuc-1/workpapers/v1.1/Verdict-E015-Test-Matrix.xlsx",
      "sha256:5365cf690231f5aaead95335b35edc664aca75f5ce65e8bc3b50fa9b12d3e214 https://verdict.systems/aiuc-1/workpapers/v1.1/Verdict-E015-Workpaper-Template.docx",
      "sha256:c54fe4729f51bf788f00fa9b49c468575ad9b103a3f60b4120e5fadfab327668 https://verdict.systems/aiuc-1/workpapers/v1.1/Verdict-E015-Evidence.zip"
    ],
    "risk_flags": [
      "Sealed 2026-11-12, the day the files were published; proves the four hashes existed no later than the Rekor time, not who sealed them and not that the files are unchanged since"
    ]
  },
  "record": {
    "schema": "ser.v0.1.legal_ai_output",
    "matter_id": "verdict-aiuc1-e015-workpapers-v1.1-2026-11-12",
    "workflow": "other",
    "input_summary": "Checksum manifest (sha256sum format) of the four version 1.1 files Verdict Systems publishes under https://verdict.systems/aiuc-1/workpapers/v1.1/, fetched from those URLs on 2026-11-12 and matched to the SHA-256 values printed on https://verdict.systems/aiuc-1/workpapers.",
    "output_summary": "Manifest SHA-256 in output_hash. Per-file SHA-256s in citations. Re-hash the published files, rebuild the four-line manifest, and compare.",
    "human_review_status": "not_required",
    "attorney_reviewer": null,
    "model_provider": "none",
    "model": "none (no AI model produced this record)",
    "prompt_hash": null,
    "output_hash": "1b467235a13529f0eefcf4da3368772d83aab37431cf76cc6271c6ac85a57152",
    "source_system": "verdict.systems static hosting",
    "citations": [
      "sha256:93b6d215e9cd87749ec3a843647a7c785ace5e1dc67c2a89e926b09b3f30fd95 https://verdict.systems/aiuc-1/workpapers/v1.1/Verdict-E015-Workpaper-Package.pdf",
      "sha256:8302cb664c229e99a784af6010bc13bb90fac21d1e6c542e5542eab308e6384a https://verdict.systems/aiuc-1/workpapers/v1.1/Verdict-E015-Test-Matrix.xlsx",
      "sha256:5365cf690231f5aaead95335b35edc664aca75f5ce65e8bc3b50fa9b12d3e214 https://verdict.systems/aiuc-1/workpapers/v1.1/Verdict-E015-Workpaper-Template.docx",
      "sha256:c54fe4729f51bf788f00fa9b49c468575ad9b103a3f60b4120e5fadfab327668 https://verdict.systems/aiuc-1/workpapers/v1.1/Verdict-E015-Evidence.zip"
    ],
    "risk_flags": [
      "Sealed 2026-11-12, the day the files were published; proves the four hashes existed no later than the Rekor time, not who sealed them and not that the files are unchanged since"
    ],
    "metadata": {
      "manifest_format": "sha256sum, two spaces, LF line endings, PDF then XLSX then DOCX then ZIP",
      "manifest_sha256": "1b467235a13529f0eefcf4da3368772d83aab37431cf76cc6271c6ac85a57152",
      "published": "2026-11-12",
      "package_version": "1.1",
      "previous_version_record": "ser_100211b2071777ac904282a3d7f942be"
    },
    "event_time": null,
    "received_at": "2026-11-12T08:43:56.846Z"
  },
  "notice": "Sealed Evidence Record produced by stateless compute. Only record is covered by payload_hash; surface, chain_of_custody, legal_review and this notice are display copies outside the hash, so read the values inside record. Record commitment is anchored to the public Sigstore Rekor transparency log; verify independently at the rekor_url. Production admissibility requires the receiving Verdict tenant to attach retention policy, custodian identity, and (where applicable) a hardware-backed signer; that production tier is planned and no production tenant exists yet."
}