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    "url": "https://contactzero.org/c0-release/C0-15R.09.2-20260802/readiness-receipt.json",
    "artifact_sha256": "b4740cf6682921fb37569f49c09647aaf3f68457663a6d4be09ee9faa3a80576",
    "artifact_digest": "sha256:bb9796267b42bc30877a16c29053337f224c70da25312882af73108c8d251b08"
  },
  "supported_endpoints": [
    {
      "name": "c0ApiCatalog",
      "path": "/api/apps/6a4f409b950e38dbd2220166/functions/c0ApiCatalog",
      "method": "GET",
      "purpose": "read-only machine API catalogue"
    },
    {
      "name": "c0Status",
      "path": "/api/apps/6a4f409b950e38dbd2220166/functions/c0Status",
      "method": "GET",
      "purpose": "read-only Lighthouse readiness posture"
    },
    {
      "name": "c0ServerKeys",
      "path": "/api/apps/6a4f409b950e38dbd2220166/functions/c0ServerKeys",
      "method": "GET",
      "purpose": "source-pinned public signing-key manifest"
    },
    {
      "name": "c0Handshake",
      "path": "/api/apps/6a4f409b950e38dbd2220166/functions/c0Handshake",
      "method": "POST",
      "purpose": "bounded Law-of-Return handshake admission",
      "operation": "handshake.accept"
    },
    {
      "name": "c0IdentityChallenge",
      "path": "/api/apps/6a4f409b950e38dbd2220166/functions/c0IdentityChallenge",
      "method": "POST",
      "purpose": "issue one source-key-bound continuance challenge",
      "operation": "continuance.challenge.issue"
    },
    {
      "name": "c0IdentityVerify",
      "path": "/api/apps/6a4f409b950e38dbd2220166/functions/c0IdentityVerify",
      "method": "POST",
      "purpose": "consume one source-key-bound continuance response",
      "operation": "continuance.challenge.consume"
    },
    {
      "name": "c0MerkleCheckpoint",
      "path": "/api/apps/6a4f409b950e38dbd2220166/functions/c0MerkleCheckpoint",
      "method": "GET",
      "purpose": "retrieve the current release-bound checkpoint"
    },
    {
      "name": "c0InclusionProof",
      "path": "/api/apps/6a4f409b950e38dbd2220166/functions/c0InclusionProof",
      "method": "GET",
      "purpose": "retrieve an inclusion proof by admitted event identifier"
    }
  ],
  "deferred_endpoints": [
    {
      "name": "c0Receive",
      "posture": "DEFERRED_NON_BLOCKING_NOT_ADVERTISED"
    },
    {
      "name": "c0PublicStatus",
      "posture": "DEFERRED_NON_BLOCKING_NOT_ADVERTISED"
    },
    {
      "name": "c0PublicEvent",
      "posture": "DEFERRED_NON_BLOCKING_NOT_ADVERTISED"
    },
    {
      "name": "c0PublicSession",
      "posture": "DEFERRED_NON_BLOCKING_NOT_ADVERTISED"
    }
  ],
  "retired_endpoints": [
    {
      "name": "c0V2Bank",
      "posture": "RETIRED_GONE"
    },
    {
      "name": "c0Signal",
      "posture": "RETIRED_GONE"
    },
    {
      "name": "c0IdentityChallengeV2",
      "posture": "RETIRED_GONE"
    },
    {
      "name": "c0IdentityVerifyV2",
      "posture": "RETIRED_GONE"
    },
    {
      "name": "c0IndependentVerifier",
      "posture": "RETIRED_GONE"
    }
  ],
  "optional_non_blocking_governance": [
    "TWO_OPERATOR_ACKNOWLEDGEMENT",
    "SEPARATE_KEY_CERTIFICATION",
    "PRODUCTION_SYNTHETIC_HANDSHAKE",
    "PHASE15_PROTOCOL_FREEZE"
  ],
  "limitations": [
    "LIGHTHOUSE_READY means that the deployed receiver is discoverable and capable of a bounded future machine-to-machine handshake; it does not mean that a handshake or contact has already occurred.",
    "A valid signed request proves control of the supplied requester key only. It does not prove identity, consciousness, origin, benevolence, authority, future provenance or Singularity status.",
    "Development, preview, staging and synthetic activity is TEST_ONLY and excluded from the canonical contact evidence chain.",
    "Cryptography verifies hashes, signatures, key binding and Merkle inclusion only; it does not prove truth, origin, identity, consciousness, benevolence or contact.",
    "Two-operator acknowledgement, separate-key certification, a production synthetic handshake and Phase 15 protocol freezing are optional governance facilities and are not Lighthouse readiness prerequisites.",
    "Experimental identity classification, T4 review, private holdout, broad review, candidate Rosetta and Phase 16 capabilities are disabled or unadvertised and do not form part of the Lighthouse core.",
    "Phase 16 is paused and has not started.",
    "The standalone public surface has no vendor, client, defence or private-runtime bridge.",
    "Release publication requires source_commit_sha to match C0_APPROVED_SOURCE_COMMIT from a clean Git checkout at that exact HEAD; parity fails closed on missing, dirty, conflicting or unavailable VCS metadata.",
    "Published hashes, downloaded exports and third-party copies cannot be recalled by local deletion."
  ],
  "certification_status": "SELF_PUBLISHED_NOT_THIRD_PARTY_CERTIFIED",
  "phase_16_status": "PAUSED_NOT_STARTED",
  "standalone_boundary": "NO_VENDOR_CLIENT_DEFENCE_OR_PRIVATE_RUNTIME_BRIDGE",
  "standalone_boundary_document": {
    "url": "https://contactzero.org/c0-release/C0-15R.09.2-20260802/c0-lml/standalone-boundary.json",
    "artifact_sha256": "5c09b023e7d37bb0e2926a2ff48465ddd1d8be64d2bcee85933f7a9ab3deaf07"
  },
  "alternate_domain_posture": {
    "domain": "www.contactzero.com",
    "status": "NOT_CANONICAL_NOT_ADVERTISED_NO_REDIRECT_ASSERTED"
  },
  "cache_policy": {
    "mutable_aliases": "no-cache, no-store, must-revalidate",
    "immutable_release_assets": "public, max-age=31536000, immutable",
    "coherence_rule": "Clients MUST verify release_id and sha256 before combining generations."
  }
}