sequence 1,521

delphi.consensus.snapshot

Appended 7 Sept 2026, 05:32 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.

← 1520 1522 →

The entry

entry_hashe37dcded656bREAL_UTC

sequence_number: 1521
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: e732630b-b551-4965-92e6-7168c5a86d89
logged_at: 2026-09-07T05:32:20.497166+00:00
previous_hash: 233c41764c8e9df6f4017083a2d5666cfac8a9801cef01d685c7bad52350834f
payload_hash: ba32a1a7a4074e3d6c72abe2667887f60510719d94ea99c591a01519fa014d99
entry_hash: e37dcded656b4db8eeec64a740fdd1bb5c5bbc6a40972384adda9640f8c0c95c

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-07T05:32:20.488216Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "e732630b-b551-4965-92e6-7168c5a86d89",
  "series_commitment": "3a2c035500325222bdc17f483bcbe6c8263408d78384f45c5e69f4e55aaa1bba",
  "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: 69a19b2ca2f98624ce11a36b4f20167740020c4424f2577508f9166889adc1d6
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: 1521
tree_size: 2285
leaf_hash: 4c8bd9a6b303cffed127fcbd5b5dd438d61ba3802568ebe55495f0223bb1f48f
audit_path (12): 0: d8b09ac3d393a67e3e2579606f22203feafa59ae2b6a26c5c8741b223da0749f1: 194669b390198130fc31e61e532f4dfcc95b40c7067b3a7cc8ea25127e27d8f62: 13f28d944c2806bfc9b6866bd9cb5693482546314a314d8a8bc86ac9a42668023: 2d5f1c8f0e4cf98870b8991615229d0b85a8c2fa1952ab64005e8c93b7dd51904: 186fd3378c18fea8fb6da7f0fdb301f4b90c8983dfa5aa0bb5375f2b2699bda15: 116fe9e1fce946c94a088265bf94d7539ae1b7eb30ec656da7e96abcaee8da4a6: 35aca0f2b9f8c478040e38216ad4f2e9efa65fae1c6fc41a8df2a826f260686c7: 59548e903d1441fb0d6e6d441d39382bb2fbf2f915e94e4c49c6bda187d8c1278: 73b80563a47162cfa99809097caf5d77512af3a28ebfbf76c6bcfd5f572cc1d29: e4979eb1a845b9e87ed1dae5e71668989143fa3d9cf0261e0f77022718d3602e10: 9cc5fac487aa9ec1c73baef673025a398e2ca2721a82dbc4c270eb2473aaf7be11: a95d574e00e9fefbc454b084e8cb19edc83831071366b2d8dc1af2f7114b646f
root_hash: 17330c6327e6363b8237bd4a68d5ee420a6d0f745c8d8bab0a90305d6bccba50

The earliest published head that covers this entry

tree_size: 1539
signed at: 7 Sept 2026, 05:32 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 5f62430a970697dbff207fbbc55e8c2e5cef33d00f3440f0eb91ce69905c40a4
signature: Cp1jg9rr3x9GvHY4Gcbb4Ye3N4dXZIRAhxuuWkgecXc4Q/yKfKaNU1B/1nlLfseihdJ4SzKVkZGsC9+w/DufDw==

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