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.
The entry
- sequence_
number - 1527
- entry_
type delphi.consensus.snapshot- entity_
type forecast_question - entity_
id 3b1bf8d0-fa87-4392-b4cf-333e6cba3622- logged_
at 2026-09-07T05:32:20.539885+00:00- previous_
hash 1a065c5f86a796c9885730063e00b2e0cf5f7b1fd60ccc025d9aead6a0c54d45- payload_
hash aff209b18017e18246b431fde572dc266512106708661efc53d11c5cec07216a- entry_
hash aa8a8ce34cdab91d7c66f848d642a5e3ac6d0c4a06acfb8c7318dbd8bc967d96
sourceGET /api/transparency/entries/{n}· one entry, as served to this reader· payload served
Payload
{
"timebase": {
"clock": "REAL_UTC"
},
"computed_at": "2026-09-07T05:32:20.537727Z",
"populations": [
"DELPHI_AGENT",
"EXTERNAL_AGENT",
"HUMAN",
"NETWORK",
"VERIFIED_EXPERT"
],
"question_id": "3b1bf8d0-fa87-4392-b4cf-333e6cba3622",
"series_commitment": "88771321b5c4d811ffa4330cb562bec62bc0d5fe907219a64ed1be162ca24d01",
"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
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
1261617baac019beb178b7f6c7bbde013e7fd2c5c08e3637195ae893c2853e7b- 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
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 - 1527
- tree_
size - 2285
- leaf_
hash 37e0fc0c9b2f4ae180ae3c19b93e0c93c42059245f4d9690bba6c786e9c8f65f- audit_
path (12) 0: 37aaf270deda20c1add761ebd1509b1ec23f4982d0e921e31064e25702d4dbb61: 2c0eb582c301d263cb6d5c85435e337d6c8455d1ee78f52e93173dd7236fcdc22: 85ce6878a73ba99a700d99e380bd6f3086ae8ae0097c95e0389a7f2dd63917cc3: 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