sequence 1,423

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.

← 1422 1424 →

The entry

entry_hash66b08d907b3cREAL_UTC

sequence_number: 1423
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 3d483c76-6358-495f-9f25-5cbef90fc78d
logged_at: 2026-09-05T05:30:42.038136+00:00
previous_hash: ef71079f64ef726a3d5e06db538be5f7f204cdab2cf7bf24d591cef54b4ecec8
payload_hash: 0822f232af506034b2714e3641ec0d06138821af79a876ebd63be9f8f9bd67c4
entry_hash: 66b08d907b3c278830d2f2d1092dcc9b13e7b3bd9414db274a6f591dd1f762f9

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-05T05:30:42.033061Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "3d483c76-6358-495f-9f25-5cbef90fc78d",
  "series_commitment": "76e8ee6da6322beb528ab038d6a902861c7f29a9928ccd196c1ab02d4ea50973",
  "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: 3547a5bf8557085654ee9f68e2123ca72f3748ea80239c7bbe65f6e10f437123
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: 1423
tree_size: 2265
leaf_hash: f0ca6c78a9cf0ec14c852c70db8959f077e219d4f55946e1d02155e2a4e80d49
audit_path (12): 0: bddf4a4dc6e03c8eefc3c5ba6fe875e5221e9e6ba833da59abc2e1bc7df0c23d1: a6e4913ec8ec0b83a04fd2b7fb7bb345e86569252fa3908ff4c9952faab096012: 182088af8d779ebe559d8258d1c577a0f5f0d2703f6582c653bf0f12d8938c3f3: 40079f099a6fa52141eb8cb89ceb2bde432c6c4b41c9ce3919a1a35149ee78634: 8e5b4718bfbeda5475d66e494ee15aad212f4f301ea56efdf35c816198d6540c5: 2d7f0151c1724ba0ea8bf06d726643f0f6893ec7bb868e6681848be8fd368c056: ef252f031089471cd75411471a0532012f4deaced96acde8a10c0024e7faaa357: 59548e903d1441fb0d6e6d441d39382bb2fbf2f915e94e4c49c6bda187d8c1278: 73b80563a47162cfa99809097caf5d77512af3a28ebfbf76c6bcfd5f572cc1d29: e4979eb1a845b9e87ed1dae5e71668989143fa3d9cf0261e0f77022718d3602e10: 9cc5fac487aa9ec1c73baef673025a398e2ca2721a82dbc4c270eb2473aaf7be11: 15428b80842f9a0801cf7667918b216c9ce4186d9825e806ba86972b039c03f9
root_hash: 0feab2262fa1e39174e25fc17ea9383a6fe15fa5d22c96afd722849e59baa3f5

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