delphi.consensus.snapshot
Appended 12 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 - 1736
- entry_
type delphi.consensus.snapshot- entity_
type forecast_question - entity_
id f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f- logged_
at 2026-09-12T05:32:20.884346+00:00- previous_
hash 6d0e3080e5ca386aac7c9b727489da9d2f3b9adf188053ab63b186f9bb9c78c1- payload_
hash 8d20a1f1acd0c79c30f129e920cf6b0a1644a9fe8bc076dd6fa7a1496927a136- entry_
hash 67b849586af706dc1fec33574391cbf1f9acca9190edf7e9e14b1d92f36567e2
sourceGET /api/transparency/entries/{n}· one entry, as served to this reader· payload served
Payload
{
"timebase": {
"clock": "REAL_UTC"
},
"computed_at": "2026-09-12T05:32:20.881398Z",
"populations": [
"DELPHI_AGENT",
"EXTERNAL_AGENT",
"HUMAN",
"NETWORK",
"VERIFIED_EXPERT"
],
"question_id": "f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f",
"series_commitment": "8d06accc950bb1d48ba189909b0d38eff8f236442f074c6f03d1e656db02ad16",
"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
3a98bc67eb2b22274b897e88e8920c1e869daf230e6648acd53666da1c0ef03f- 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 - 1736
- tree_
size - 2285
- leaf_
hash e098f9d65b53a5f490fbf254fdafd37455a8811f7aad5905d2e83986fd6a6521- audit_
path (12) 0: 22eb1a5864a28d4899e091a57c632800bb985073034656f6d2229b6ef6ac22341: 3455404a9edecbd0f045a619a1f0de86669474a52497a96d11c535ba4aefa6ae2: 4175cc4cebe6e682022c589321051accadc556b88f023bd207f3f5dddb63cfef3: 635aae6193961455327075b2fe16ff662110a049f19d8f0882cf12b56058acb74: 0c9bd5c162fc6aaf5d9bf93b62d6c7267bc3226cfca9518555e4803f850180b65: fd82ea2957dec252aaf0f497194cc97cb06fa6fdc01911c77e1a2e46ff4eaa336: ac160a0852932e7e1298c12b7bbeac8a979011b4c86d850294a53e9c58329b547: 89bbeb672caa03ccca78c3e7d709e14d72ed0f279c7cfcd435bb71dc863239c68: 49fbc719d10777c21e02e255a1174dbc47e89c67c7b327c5f50e8ea1ffbb5bad9: 5fb1ed5f5a35e845232517268bf48c5384c29f290dd198d1d6f802756a73a76d10: 9cc5fac487aa9ec1c73baef673025a398e2ca2721a82dbc4c270eb2473aaf7be11: a95d574e00e9fefbc454b084e8cb19edc83831071366b2d8dc1af2f7114b646f- root_
hash 17330c6327e6363b8237bd4a68d5ee420a6d0f745c8d8bab0a90305d6bccba50
The earliest published head that covers this entry
- tree_
size - 1749
- signed at
- 12 Sept 2026, 05:32 UTC
- key_
id 042b55492fabadcb8ffb9fe4e9b6a3e8- root_
hash e8cba9a99f4a57e7aaabf2bd0c850bb0715afb51953cf8fcda65ca036a6c608e- signature
cNlPz9oqpkHabbJeJhuOvJLMF32ooelAhyWb8yHCQmsqZM9LEZ0petdc0dMGAZbz5avsJ6pUSC4TluX7fEBpAw==
sourceGET /api/transparency/proof/inclusion· leaf_hash, audit_path, root_hash· audit-path nodes: 12