{
  "log_key": "rekor.sigstore.dev",
  "description": "Sigstore Rekor, active shard",
  "operator": "Sigstore",
  "checkpoint_url": "https://rekor.sigstore.dev/api/v1/log",
  "checkpoint_format": "rekor_json_wrapping_a_signed_note",
  "signature_scheme": "ecdsa_p256_note",
  "key_source_url": "https://rekor.sigstore.dev/api/v1/log/publicKey",
  "limbs": {
    "log_listed_in_a_public_list": {
      "outcome": "ok",
      "listed_in": "named individually in the expectations file"
    },
    "public_key_obtained_independently_of_the_log": {
      "outcome": "fail",
      "reason": "only_key_source_read_is_the_log_itself",
      "attribution": "ecosystem",
      "key_source": "https://rekor.sigstore.dev/api/v1/log/publicKey",
      "note": "The only key source this monitor reads is the log's own endpoint. Sigstore distributes the same key through a TUF root on a separate origin, which is the independent path, and this monitor has not implemented TUF. The independence limb refuses and the refusal is attributed to the ecosystem rather than to the log."
    },
    "checkpoint_endpoint_answers_without_credentials": {
      "outcome": "ok",
      "status": 200,
      "bytes": 1151
    },
    "checkpoint_parses_in_its_declared_format": {
      "outcome": "ok",
      "format": "c2sp_signed_note"
    },
    "checkpoint_carries_tree_size_and_root_hash": {
      "outcome": "ok",
      "tree_size": 2197425668,
      "root_hash": "f2cc38246c78344613d3f6386ccff8fff0cad3a0eee15fc05030fac1f616b38b"
    },
    "checkpoint_carries_a_signature": {
      "outcome": "ok",
      "signature_lines": 1
    },
    "signature_scheme_supported_by_this_monitor": {
      "outcome": "fail",
      "reason": "signature_scheme_not_implemented_by_this_monitor:ecdsa_p256_note",
      "attribution": "probe"
    },
    "signature_verifies_against_the_published_key": {
      "outcome": "fail",
      "reason": "signature_not_checked_because_this_monitor_cannot_read_the_scheme",
      "attribution": "probe"
    },
    "checkpoint_carries_witness_cosignatures": {
      "outcome": "fail",
      "reason": "checkpoint_carried_no_signature_beyond_the_log_own",
      "attribution": "publisher",
      "note": null
    },
    "prior_batch_checkpoint_on_record": {
      "outcome": "ok",
      "prior_read_at": "2026-08-02T05:34:46.892579+00:00",
      "prior_tree_size": 2197332918
    },
    "second_read_answered": {
      "outcome": "ok",
      "tree_size": 2197436369
    },
    "tree_did_not_shrink_between_reads": {
      "outcome": "ok",
      "first_size": 2197425668,
      "second_size": 2197436369,
      "entries_added": 10701
    },
    "consistency_proof_served": {
      "outcome": "ok",
      "nodes": 21
    },
    "consistency_proof_recomputes_to_the_second_root": {
      "outcome": "ok",
      "reason": "both_roots_recomputed",
      "first_size": 2197425668,
      "second_size": 2197436369,
      "proof_nodes": 21
    }
  },
  "evidence": {
    "first_read": {
      "url": "https://rekor.sigstore.dev/api/v1/log",
      "status": 200,
      "error": null,
      "bytes": 1151,
      "read_at": "2026-08-02T05:42:53.113643+00:00",
      "body_sha256": "af382f471dca959c7c60daf19ee0f76b775b56f5899efda07e1a55199a9ffe4f",
      "parsed": true,
      "format": "c2sp_signed_note",
      "origin": "rekor.sigstore.dev - 1193050959916656506",
      "tree_size": 2197425668,
      "signature_lines": 1,
      "extension_lines": [],
      "declared_tree_size": 2197425668,
      "declared_root_hash": "f2cc38246c78344613d3f6386ccff8fff0cad3a0eee15fc05030fac1f616b38b",
      "root_hash_hex": "f2cc38246c78344613d3f6386ccff8fff0cad3a0eee15fc05030fac1f616b38b",
      "raw_body": "{\"inactiveShards\":[{\"rootHash\":\"4d006aa46efcb607dd51d900b1213754c50cc9251c3405c6c2561d9d6a2f3239\",\"signedTreeHead\":\"rekor.sigstore.dev - 3904496407287907110\\n4163431\\nTQBqpG78tgfdUdkAsSE3VMUMySUcNAXGwlYdnWovMjk=\\n\\n— rekor.sigstore.dev wNI9ajBFAiEAs29xThbJxmKXGqRa5vqdnDYUvxbm+y96VSNkrBLAEiICIHWbVLl1TXdlBhFSl8PSYk5waTgejrQjb9OYkT9q+3fy\\n\",\"treeID\":\"3904496407287907110\",\"treeSize\":4163431},{\"rootHash\":\"2b9c578071e120aa84c9858783daa671565e4165f3a7dfa199aad81940299d8e\",\"signedTreeHead\":\"rekor.sigstore.dev - 2605736670972794746\\n117740831\\nK5xXgHHhIKqEyYWHg9qmcVZeQWXzp9+hmarYGUApnY4=\\n\\n— rekor.sigstore.dev wNI9ajBFAiAnP2OPExBRFUrqkuKKj49uO6mZ/ucGlBUIMv0y4H2VdAIhAN6Zb6ydZfT03OEnyW2BKdLgi0BwgtTy26a6lKYduLol\\n\",\"treeID\":\"2605736670972794746\",\"treeSize\":117740831}],\"rootHash\":\"f2cc38246c78344613d3f6386ccff8fff0cad3a0eee15fc05030fac1f616b38b\",\"signedTreeHead\":\"rekor.sigstore.dev - 1193050959916656506\\n2197425668\\n8sw4JGx4NEYT0/Y4bM/4//DK06Du4V/AUDD6wfYWs4s=\\n\\n— rekor.sigstore.dev wNI9ajBFAiEAxNDfGWqCckLrL5pFIxzeMSH83hlWIh/+wGDhguYvCcECIBy846tM8SgcK/kGkTPzNnOvxXDwOB3UVKTZcQMeWetJ\\n\",\"treeID\":\"1193050959916656506\",\"treeSize\":2197425668}\n"
    },
    "signature_check": {
      "supported": false,
      "verified": false,
      "reason": "signature_scheme_not_implemented_by_this_monitor:ecdsa_p256_note"
    },
    "prior_batch": {
      "log_key": "rekor.sigstore.dev",
      "read": "second_read",
      "read_at": "2026-08-02T05:34:46.892579+00:00",
      "tree_size": 2197332918,
      "root_hash": "e4cd8bcf642ce8bfb71fb2e08247b5c2ea5624d35dd418df2ccc8e3644c513f7",
      "body_sha256": "37420ded0060bf00bc39d74d2d3053c81e913df29e0e60898b04e442e958d5a8"
    },
    "second_read": {
      "url": "https://rekor.sigstore.dev/api/v1/log",
      "status": 200,
      "error": null,
      "bytes": 1151,
      "read_at": "2026-08-02T05:43:53.870140+00:00",
      "body_sha256": "78170ef6398f24972981661c16674460d26f68cac054ead6acdb8f38619ae0db",
      "parsed": true,
      "format": "c2sp_signed_note",
      "origin": "rekor.sigstore.dev - 1193050959916656506",
      "tree_size": 2197436369,
      "signature_lines": 1,
      "extension_lines": [],
      "declared_tree_size": 2197436369,
      "declared_root_hash": "591c4d013175a4f39e79b200fcf1f16f36f3dd1f256330206283589ea4c68b50",
      "root_hash_hex": "591c4d013175a4f39e79b200fcf1f16f36f3dd1f256330206283589ea4c68b50"
    },
    "consistency_request": {
      "served": true,
      "url": "https://rekor.sigstore.dev/api/v1/log/proof?firstSize=2197425668&lastSize=2197436369",
      "proof": [
        "a8c033c66130d090894969898eeaeb824fdefa74491c7959587bea5194bf16e5",
        "30d90ee9969ed569521a3be7f4a7b85967317d95f1b09a22c95b053700a1091d",
        "9fd62326b4b82865fc44d1f67d115ab67d26398a7a91f8c86e1a1a03e1bd6dd1",
        "a4d5fcf8f0a6630c28dba7447bc4ecdff672ff0a10cbf1edcd5bc129945625df",
        "b0f54f98993660c188f894c24b207ecc51dfd57b153a0bc16a5e612678141c84",
        "6555ba36e7e1dc69639c344382c0eb583adf322abd0c6c91040f7f8d7049fbee",
        "74a7f51c9e1c23e30a2920893049e6ef62f402fdf0685350a0a4b8af9bcaa40c",
        "71ce10505035f67f067afe49e233fc791dd0de1043aacbf90113cadd3958a1ed",
        "570b3bb8b9f3a753749abc5e975e901604d2afa4101aa5f71163ad2f079b8fa6",
        "68c8d544b2eac12a665fd24d46768fd45bbc9734d9580f6a74542e8503255b32",
        "62170149c2b521ab74d7c7af2fdf2defe7264d750bb65c2345d5bb7fc7eefcf2",
        "5540e145670ab767257ae1e046a9bf8fd316c51d857ca39da579c5f60c59bc65",
        "b014ff7e37d26f0553407652ab78fae773ce160e68b1648ad31054d5c40bddd6",
        "1650457eb5445578ed7a7776bf9509afc9f1c5bbb838ef8a5a46a233ce725469",
        "b7c9589ea639f9ca512bde2f9214403c6b719120b3d4166110db4661bcb9880b",
        "03704d5fa3d59fd84cb2e20a95297aea4bb7c6214a5913ec86078432eb99cee7",
        "168d2829367f0c73ac1a95e25d95570675ad73ebe040934400402e59b5beef17",
        "b32061edf0c63021d3cc8f19707a22b1e2211c132ed7325d56e1ef65c439b790",
        "afaab348b7f755b9ef7f42f8b39cb0e5016a0241bd3889a4627b56446a1a1da6",
        "3767317bcbdeaa2de21bf1067f5cc06a0b784aab162b0832c4d09e8120dceb4b",
        "c47fc30ac78b1ebf5e2a8613f2ab0e4592bbcd5744198587b95b6c56b0fde706"
      ],
      "nodes": 21
    }
  },
  "tree_advanced_between_reads": true,
  "entries_added_between_reads": 10701,
  "checked_at": "2026-08-02T05:43:57.759071+00:00",
  "must_admit": false,
  "full_admit": false,
  "refuse_limb": "public_key_obtained_independently_of_the_log",
  "refuse_reason": "public_key_obtained_independently_of_the_log:only_key_source_read_is_the_log_itself",
  "attribution": "ecosystem",
  "must_limbs_failed": [
    "public_key_obtained_independently_of_the_log",
    "signature_verifies_against_the_published_key"
  ],
  "should_limbs_failed": [
    "signature_scheme_supported_by_this_monitor"
  ],
  "receipt_filename": "rekor.sigstore.dev.json",
  "ledger": "https://geniusflow-federation.vercel.app/tlog/ledger.json",
  "ledger_digest": "1e9ae859e742abe6cfb6dabb7e5d337cba88d3f3cc0715ceb8a5a9bdc3821603",
  "expectations_digest": "78cb2f5444df2da26462e17070ab9e421ae85b30a8ec1ed672ea21cddeb34290"
}