delphi.consensus.snapshot
Appended 26 Aug 2026, 05:31 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 - 860
- entry_
type delphi.consensus.snapshot- entity_
type forecast_question - entity_
id 4e06eb7d-ce53-4631-86d8-403a4f841a49- logged_
at 2026-08-26T05:31:21.258013+00:00- previous_
hash fa9fff46796037dd70f91dc681bc1cb4f3e112e69817890817f26bc5d83c9fd8- payload_
hash 1f405551687615f6417090444dc88dc48a8421f03f8ad890f1f1e160ee93b70f- entry_
hash 7145efbe9a8df852343b8b3967c3bf1e13211bc320f30a214a852d0c13b894f9
sourceGET /api/transparency/entries/{n}· one entry, as served to this reader· payload served
Payload
{
"timebase": {
"clock": "REAL_UTC"
},
"computed_at": "2026-08-26T05:31:21.250066Z",
"populations": [
"DELPHI_AGENT",
"EXTERNAL_AGENT",
"HUMAN",
"NETWORK",
"VERIFIED_EXPERT"
],
"question_id": "4e06eb7d-ce53-4631-86d8-403a4f841a49",
"series_commitment": "139fe3e3d75032f3a2ff5770e1e6e3f35a2816a4e4bb1dd33d5f2f3626a7e469",
"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
e35757283be381277dae8f3c62f358cc0df2ee86a25691ef75c64a3dfe2e80b2- 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 - 860
- tree_
size - 2285
- leaf_
hash c7eb0016a4fad7bc82555f0757d96ba30c8ddf51461104a531ab999a4e8cc9cb- audit_
path (12) 0: 3883a64a78594525b1687b458fa624f997af461b39d020200938432a868388f01: 5b3e708fe3cf91d01bed5623f785afb0b316936b53d0e5011e424d31a2479b2a2: 9c2a0dafc21ad532f67907528664bdcf887db442800e20fdcd4eb44e2a29c4a03: e65a6deeecdf188eab482b9915848609a900ef35fd583f0f2856a1f3c72f7cbc4: 9cd8a6bfba6591cfa3f8b70078a79ff86cc289427dd3e966e21beee04548c0445: 0b8d901001123ed160fe9a78454fe298b537c0333de7419007d606d829d3e4336: 4d2bb962b08e7d02e1409329aa3652b71103484fd25b8d3f56baa89c1b2c43407: bc6ace31149b3e9c1ba9d5f2b34ffb85a63422d9dcf2ebf241b2cac10329bca88: 184a24c3b623669a5fc418f1a01a448ab12c5b650e771370beaf16f761dd2e6c9: e5a5c76fa4bfc3f31f74c026263990b303ea76d2ec828987b307239036c908ac10: 86666e2cb262024eb1c2584c671184dc2fb8b8d41a345bde94ca518e487ac23911: a95d574e00e9fefbc454b084e8cb19edc83831071366b2d8dc1af2f7114b646f- root_
hash 17330c6327e6363b8237bd4a68d5ee420a6d0f745c8d8bab0a90305d6bccba50
The earliest published head that covers this entry
- tree_
size - 891
- signed at
- 26 Aug 2026, 05:31 UTC
- key_
id 042b55492fabadcb8ffb9fe4e9b6a3e8- root_
hash 1b6242aee4572bc1cf018b1691811ecd6b368592cda0591cf6a4aeeddde5c07b- signature
Y/2YtRN8eDjfqUhrXHsTAsGI7CAljXh3GfV+XD3uVfaQMz3fIUak14+OLTbFm9tgH9HQdSJtHTtyD/roGWLnCg==
sourceGET /api/transparency/proof/inclusion· leaf_hash, audit_path, root_hash· audit-path nodes: 12