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 - 45
- entry_
type delphi.consensus.snapshot- entity_
type forecast_question - entity_
id 4bfc7aa0-f12f-479c-ba06-d8e4cebfe625- logged_
at 2026-08-15T15:53:36.950639+00:00- previous_
hash 3635fcc77164be69426318c43eff2ec4d37efc1210fb76289cb3fa4844c351c7- payload_
hash f4bf23395bafd8479f0868387b43a655ddf89094878f6961390bf58995b9cdb2- entry_
hash b582ed4ee81ce7ad99003f54700081b0775cdff214e6f731c5c89c944683b57b
sourceGET /api/transparency/entries/{n}· one entry, as served to this reader· payload served
Payload
{
"timebase": {
"clock": "REAL_UTC"
},
"computed_at": "2026-08-15T15:53:36.947176Z",
"populations": [
"DELPHI_AGENT",
"EXTERNAL_AGENT",
"HUMAN",
"NETWORK",
"VERIFIED_EXPERT"
],
"question_id": "4bfc7aa0-f12f-479c-ba06-d8e4cebfe625",
"series_commitment": "cf25e887d7281371cd19406f58f10a7e7a7c0848bae40fb5412c7ddcc8fa0c66",
"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
fbde71b5d83de7f2bdd06c0384f3220129e87a34c34252d18507725d2e62aadf- 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 - 45
- tree_
size - 2479
- leaf_
hash 7942e17264d0470982b4fcb515fa0a178f589a1b30ecd85a243c87b3acf28fbd- audit_
path (12) 0: 6e18522043d747efe91b5321eae60d25a294596a0988dd8ac71c5459e606ce191: ad36da04017902e966bff76992f4c65ee608b90600c74484f26cda173e4991f82: 79b53e1f98697a1bd4aad9267d101adf9029f4aa753b53e2269c35a284aa18a83: eaeacbd8d319b9d776cf6f767329e32539ccecb621836ffea46c36ad501849234: 44572e1f9d85cea0b2eeaa0aa227d6fb80c1e5448efb5228f587d667c12052dd5: 0dec549ee6527dafc0e801068f2df8c4eef8fcb9972397c6eb58217673bbfe9c6: 432b3bec17cc8d9bd118f5d2d11fc56d0578ec1940af60be2192f2f1b8d43dc67: 925d039cfaa2795efce751d71988395a9d8544d4910a71d82c761e6c8e51ba2e8: 6e5b02022079dc614c5f74ca1c784cf9700d832e05c2eec11f0ad0a37376b46d9: 2fb679aab258481705c982e553094522ea7bb93361711a8387ebf359e8c3e43110: 86666e2cb262024eb1c2584c671184dc2fb8b8d41a345bde94ca518e487ac23911: 8d949d6aef53b2e3322ef5e232755263eaea63b886b405d936c87ac0c842b6a1- root_
hash 2135d33fc3b42de9408df8505e145fcd175142e943af391ea41c56bc99a1e5e2
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