delphi.consensus.snapshot
Appended 15 Aug 2026, 15:53 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 - 31
- entry_
type delphi.consensus.snapshot- entity_
type forecast_question - entity_
id d1b83331-68f7-4be7-a625-f7824bccab5b- logged_
at 2026-08-15T15:53:36.288426+00:00- previous_
hash d70c6c175968feab6d0b165cadeb1e8bb36beac9a07978b5d530364457a571d1- payload_
hash 1e9329c6c3dbab108b2e059dff90c4579b67d70fb33cee488a8cd48ddb63cd70- entry_
hash de579b24c9df0f988a014675aa56b6096a138fa843b03c735bf41005a0a8176e
sourceGET /api/transparency/entries/{n}· one entry, as served to this reader· payload served
Payload
{
"timebase": {
"clock": "REAL_UTC"
},
"computed_at": "2026-08-15T15:53:36.284562Z",
"populations": [
"DELPHI_AGENT",
"EXTERNAL_AGENT",
"HUMAN",
"NETWORK",
"VERIFIED_EXPERT"
],
"question_id": "d1b83331-68f7-4be7-a625-f7824bccab5b",
"series_commitment": "3856f4314df42050a689d9cc0e9566889c74128484dce258089ec645b30d3cca",
"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
d71bb62e44adf31a1b2cd3d680930c18301f2eeb58aa318f7e5093556466e306- 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 - 31
- tree_
size - 2285
- leaf_
hash 36d01af729226ccf32bd19ad6e2fb3c8a73d8032ca9d5b561d027a3abe67a09e- audit_
path (12) 0: 3366bb69eafd9e38b432391de4950487cb219b7c1ec263fcc03f973382c5195c1: 5a2c1bfe26f42ba3d0f5896932755af01b75aa485207f715c1cb9c4dd044292b2: 1bab8e6b1385cbd43dadbbe19c62fa5e79c714dc2ed265dd3bc33b2b34b507c93: 1cf5d64fb4965f4940c526fa698108d7c4578146408b3cd51dabd149d5674bd74: 7d6682fa6e600d077f7841e30621efe19877a3f61ce600d24a3eb3948d17dd255: b74c92a6356a40d4a8987db99772ead75d18bf349905054ba53bbc3401d9b2b96: 432b3bec17cc8d9bd118f5d2d11fc56d0578ec1940af60be2192f2f1b8d43dc67: 925d039cfaa2795efce751d71988395a9d8544d4910a71d82c761e6c8e51ba2e8: 6e5b02022079dc614c5f74ca1c784cf9700d832e05c2eec11f0ad0a37376b46d9: 2fb679aab258481705c982e553094522ea7bb93361711a8387ebf359e8c3e43110: 86666e2cb262024eb1c2584c671184dc2fb8b8d41a345bde94ca518e487ac23911: a95d574e00e9fefbc454b084e8cb19edc83831071366b2d8dc1af2f7114b646f- root_
hash 17330c6327e6363b8237bd4a68d5ee420a6d0f745c8d8bab0a90305d6bccba50
The earliest published head that covers this entry
- tree_
size - 374
- signed at
- 19 Aug 2026, 20:25 UTC
- key_
id 042b55492fabadcb8ffb9fe4e9b6a3e8- root_
hash ecf4adc708ae542a0339e03fd4cc181cf49d0329768627c5345c915a58bd813a- signature
3yL+JZfMhiQ6rm5rCTTg7iT+or04nCGVcQ08ILMw/d7eqvR4Jid7cEg2rQU5fCX7llStjVkTC9jVZjfGQvtMAg==
sourceGET /api/transparency/proof/inclusion· leaf_hash, audit_path, root_hash· audit-path nodes: 12