sequence 1,434

delphi.consensus.snapshot

Appended 5 Sept 2026, 05:30 UTC. Its place in the chain is fixed by the hash of the entry before it; what follows is whether that place is covered by a signature.

← 1433 1435 →

The entry

entry_hash0e22a4c46f26REAL_UTC

sequence_number: 1434
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f
logged_at: 2026-09-05T05:30:42.118943+00:00
previous_hash: 2941b009e4f46688989b0990e641301b4ce583b76b2ec20a5e01c78ae8ba4edd
payload_hash: a0a53d539f481865c1f9a449bab34b6d63100e5c915bc19c7f2ae438d919ae5b
entry_hash: 0e22a4c46f269316f462e75f6aee07b6e3f3e4634007267ef04d84401a2ad968

sourceGET /api/transparency/entries/{n}· one entry, as served to this reader· payload served

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-05T05:30:42.116360Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f",
  "series_commitment": "ecfc5a86d5db23b9890cd04d5e3c8f244195d861a7b1e6aca35e0f9063be857b",
  "commitment_version": "v2"
}

Shown indented so it can be read. The hash is taken over the canonical form of the same object — keys sorted by code point, no insignificant whitespace, UTF-8 rather than escaped ASCII, timestamps RFC 3339 in UTC to microseconds, decimals as their plain string form. The check below re-encodes the object canonically before hashing it, which is why an indented display cannot make it pass or fail.

Which digest recipe applies

migration 0021 salted this digest · both versions coexist in one append-only log

commitment_versionv2stated in the payload

The entry names its own version, so a reader can pick the right recipe without knowing when the salt was introduced.

sha256(canonical_json({question_id, computed_at, salt, readings})), where readings is the batch's populations sorted by population, each carrying exactly {population, method, method_version, sample_size, distinct_operator_count, value}

salt: 96b4b2f6b92043b1f7caa9c131becb5f53644fc9135eaf150781a51bad17d98c
readings: 5
recompute: sha256(canonical_json({question_id, computed_at, salt, readings})) must equal series_commitment in the payload above. Take question_id and computed_at from that payload verbatim, sort readings by population, and give each reading exactly the six keys served here — the values carry their stored precision and are hashed as the decimal strings they appear as

Verify it here

computed in your browser, not on the server

Recomputing the hashes in this browser… If this sentence stays, this browser has no Web Crypto and nothing here has been verified locally.

The proof, as served

leaf_index: 1434
tree_size: 2491
leaf_hash: 0cd31f83e8b15a767f7d5d0e2ecbdd11bf084b35e42b29f152034145af0d5994
audit_path (12): 0: 6ab15c44c73a167d3adf4db7f42cccdfc348177132fec7545057c8cf15db2e061: 61bdb056b8c4ae6dbcf5bf9dbed18b721b9123736fc0c23e97068faea4674b862: 683ba7eae3107d98372bb1d7dc3486104b7f7b049cacb16c6ff57c15169928103: 564edf0d636b2ed19b71651eecb09aae7f9bedda413c151d2bf06ab39ce788c34: eb2ad53469a5278129837bf3faf26af1991b9ed24b7535827c85adb2a6fdf4295: 2d7f0151c1724ba0ea8bf06d726643f0f6893ec7bb868e6681848be8fd368c056: ef252f031089471cd75411471a0532012f4deaced96acde8a10c0024e7faaa357: 59548e903d1441fb0d6e6d441d39382bb2fbf2f915e94e4c49c6bda187d8c1278: 73b80563a47162cfa99809097caf5d77512af3a28ebfbf76c6bcfd5f572cc1d29: e4979eb1a845b9e87ed1dae5e71668989143fa3d9cf0261e0f77022718d3602e10: 9cc5fac487aa9ec1c73baef673025a398e2ca2721a82dbc4c270eb2473aaf7be11: 083d0806ed3c3d656f2d8c4762013d3fb4c0ed984cb03e95e8ae46936f2431df
root_hash: a9a1dac66ff7c8ec3d4b27b434ff70fbde5df3ef3dcd4b4fe4b41bb80f78a7c7

The earliest published head that covers this entry

tree_size: 1445
signed at: 5 Sept 2026, 05:30 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 14935c0bde678e80dc3a37641650904de8988691c769149c38b10d54518ed6da
signature: oBabtEvQC4ypaFdP+K4eO6SkxwE6AoHWZOprH3l6t63fcsSRixVw214MPbkS6PXBnFsTXA0rFPKABtwhipFLCA==

sourceGET /api/transparency/proof/inclusion· leaf_hash, audit_path, root_hash· audit-path nodes: 12