{
  "schema": "futhorc-transparency-log/1",
  "release": "v2026.08.15.20",
  "authority": "first_party_local_deterministic_append_only_checkpoint_lineage",
  "truth_boundary": "This checked-in transparency log and bounded 4-to-8 consistency proof establish only local append-only consistency relative to predecessor checkpoint roots. They are not a public transparency service, timestamp authority, signature, authorship proof, non-repudiation, peer authentication, domain control, or real-world authorization.",
  "checkpoint_set_digest_sha256": "ea1ad6f25abc6eff00443e1b586b6c629174cebe8236556c67b8238f73eacf9a",
  "chain_digest_sha256": "e54e800dead045612a3eeeb4febfd8eee74846b4924ace64d1763790ff3d3646",
  "policy_version": "1.0.0",
  "policy_digest_sha256": "e05829b8f05ec72468b177229e5016cbca0f25dcd3c2ce74d53ca275593ad2ab",
  "session_transcript_digest_sha256": "1a466b691f1abe9ea60ab951ce6efc2fd56de804a3175e54a3117d152366b3e0",
  "entry_count": 2,
  "entries": [
    {
      "log_index": 0,
      "tree_size": 4,
      "checkpoint_id": "cp-75050ca13efa8a5a",
      "merkle_root_sha256": "bce8331c8a021a10576350eb59d729f830cf11b809976f3e5345cd293d9f9cdd",
      "range_start_index": 0,
      "range_end_index_inclusive": 3,
      "chain_digest_sha256": "e54e800dead045612a3eeeb4febfd8eee74846b4924ace64d1763790ff3d3646",
      "policy_version": "1.0.0",
      "policy_digest_sha256": "e05829b8f05ec72468b177229e5016cbca0f25dcd3c2ce74d53ca275593ad2ab",
      "session_transcript_digest_sha256": "1a466b691f1abe9ea60ab951ce6efc2fd56de804a3175e54a3117d152366b3e0",
      "previous_entry_digest_sha256": "0000000000000000000000000000000000000000000000000000000000000000",
      "entry_digest_sha256": "c0f0fa8fccab193f04b3efd29b5c9cc6ccd0966165b3ff3a997f785e1128ffcd"
    },
    {
      "log_index": 1,
      "tree_size": 8,
      "checkpoint_id": "cp-766608138615ec15",
      "merkle_root_sha256": "d58b041563c54b143b75abae376cb7a8445866d1930df01e4537bb43fff7a8cc",
      "range_start_index": 0,
      "range_end_index_inclusive": 7,
      "chain_digest_sha256": "e54e800dead045612a3eeeb4febfd8eee74846b4924ace64d1763790ff3d3646",
      "policy_version": "1.0.0",
      "policy_digest_sha256": "e05829b8f05ec72468b177229e5016cbca0f25dcd3c2ce74d53ca275593ad2ab",
      "session_transcript_digest_sha256": "1a466b691f1abe9ea60ab951ce6efc2fd56de804a3175e54a3117d152366b3e0",
      "previous_entry_digest_sha256": "c0f0fa8fccab193f04b3efd29b5c9cc6ccd0966165b3ff3a997f785e1128ffcd",
      "entry_digest_sha256": "c6804f861da28aa47e969f06458ff76036e798fec856da62a4689762921fcdc4"
    }
  ],
  "consistency_proofs": [
    {
      "proof_id": "consistency-4-to-8",
      "from_tree_size": 4,
      "to_tree_size": 8,
      "from_checkpoint_id": "cp-75050ca13efa8a5a",
      "to_checkpoint_id": "cp-766608138615ec15",
      "from_root_sha256": "bce8331c8a021a10576350eb59d729f830cf11b809976f3e5345cd293d9f9cdd",
      "to_root_sha256": "d58b041563c54b143b75abae376cb7a8445866d1930df01e4537bb43fff7a8cc",
      "proof_nodes": [
        {
          "role": "prefix_root",
          "digest_sha256": "bce8331c8a021a10576350eb59d729f830cf11b809976f3e5345cd293d9f9cdd"
        },
        {
          "role": "appended_subtree_root",
          "digest_sha256": "4ed8b18befba9e795ac64b03675ce9340797395f18f4534c14f7f2dfdc91c03e"
        }
      ],
      "proof_digest_sha256": "7aece4f7f8999d263112e20fd589157f39a28994a05e3a983bbd7581ed11df5a"
    }
  ],
  "log_digest_sha256": "01264c1c2440b82db4c55c8d9b85aeafbfc526934464a642154a81f5c0e7c449"
}