{
 "evidence_record_id": "ser_551466d5c3348b2f0178071ccc89d5b8",
 "schema": "ser.v0.1.legal_ai_output",
 "payload_hash": "551466d5c3348b2f0178071ccc89d5b8878cc5a7f54c1e5b733481eb71d5cede",
 "merkle_root": "e4a63f80a9b418dbc68856982bfd13bcd00607fdb4f81843ca5c3a9429589354",
 "transparency_anchor": {
  "status": "anchored",
  "rekor_log_id": "108e9186e8c5677adf90afc7ca9a531197b5314fe83c2747ac11453fdbedbfc26a4bb11eb787c815",
  "rekor_log_index": 3245480599,
  "rekor_url": "https://rekor.sigstore.dev/api/v1/log/entries/108e9186e8c5677adf90afc7ca9a531197b5314fe83c2747ac11453fdbedbfc26a4bb11eb787c815",
  "signing_algorithm": "ecdsa-p256-sha256",
  "public_key_pem": "-----BEGIN PUBLIC KEY-----\nMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEI1BFtIsRv+8rXA27V0x92KMVkKzA\nbrbfcYc2sxXgqbrTIQMi30p+gkymeAwmEJBjgBJ3axd0LtLGTVn1uAVEmg==\n-----END PUBLIC KEY-----",
  "anchored_at": "2026-10-13T17:42:22.612Z"
 },
 "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,
  "signer": "unbound_ephemeral_key",
  "transparency_anchor": {
   "status": "anchored",
   "rekor_log_id": "108e9186e8c5677adf90afc7ca9a531197b5314fe83c2747ac11453fdbedbfc26a4bb11eb787c815",
   "rekor_log_index": 3245480599,
   "rekor_url": "https://rekor.sigstore.dev/api/v1/log/entries/108e9186e8c5677adf90afc7ca9a531197b5314fe83c2747ac11453fdbedbfc26a4bb11eb787c815",
   "signing_algorithm": "ecdsa-p256-sha256",
   "public_key_pem": "-----BEGIN PUBLIC KEY-----\nMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEI1BFtIsRv+8rXA27V0x92KMVkKzA\nbrbfcYc2sxXgqbrTIQMi30p+gkymeAwmEJBjgBJ3axd0LtLGTVn1uAVEmg==\n-----END PUBLIC KEY-----",
   "anchored_at": "2026-10-13T17:42:22.612Z"
  },
  "retention_class": "ephemeral_compute"
 },
 "legal_review": {
  "human_review_status": "approved",
  "attorney_reviewer": null,
  "citations": [],
  "risk_flags": []
 },
 "record": {
  "schema": "ser.v0.1.legal_ai_output",
  "matter_id": "demo-custody-CUS-5118",
  "workflow": "agentic_action",
  "input_summary": "Multisig approval on CUS-5118 at Kestrel Vault Custody (fictional). Signing screen shown to signer 2 of 3: 'Transfer 250 ETH from cold wallet CW-01 to hot wallet HW-03, routine rebalance.' The raw transaction payload is fingerprinted in output_hash; no key material or addresses in this record.",
  "output_summary": "Signer 2 of 3 (fictional, treasury operations) approves the transaction as displayed. Approval recorded with the displayed summary and the fingerprint of the payload that was signed, at the time of signing.",
  "human_review_status": "approved",
  "attorney_reviewer": null,
  "model_provider": "demo",
  "model": null,
  "prompt_hash": null,
  "output_hash": "c91e1101472c5a23d4ff81238a738ddf871f42b83b2e1ba4f4a8fd32829d0dfd",
  "source_system": "Custody signing workflow (demonstration, fictional data)",
  "citations": [],
  "risk_flags": [],
  "metadata": {
   "case_id": "CUS-5118",
   "step_kind": "multisig_approval",
   "signer": "2_of_3",
   "displayed_summary": "250 ETH CW-01 to HW-03, routine rebalance",
   "payload_fingerprint": "c91e1101472c5a23d4ff81238a738ddf871f42b83b2e1ba4f4a8fd32829d0dfd",
   "step": 1,
   "of": 1,
   "illustrative": true,
   "disclosure": "Fictional scenario built for a demo on 2026-10-13. Custodian, signers, wallets and figures are invented. The seal and the public log entry are real."
  },
  "event_time": "2026-10-13T17:42:21Z",
  "received_at": "2026-10-13T17:42:22.030Z"
 },
 "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."
}