delphi.consensus.snapshot
Appended 20 Aug 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 - 415
- entry_
type delphi.consensus.snapshot- entity_
type forecast_question - entity_
id a8c36f16-c0df-49f5-92d5-29bb1d0e58a9- logged_
at 2026-08-20T05:32:04.496084+00:00- previous_
hash a2c279e9b7ab008d25970c00599c0789cfcd788916d1f82ea7f94a5ffd702453- payload_
hash 3552bdba56bcdb58e4bc724e00688b744b01aa2745bfdbc8dd5db99313899cfd- entry_
hash c5c60293516686ced639947ca62b42f7e9eb64aef886bbba608d7739af061435
sourceGET /api/transparency/entries/{n}· one entry, as served to this reader· payload served
Payload
{
"timebase": {
"clock": "REAL_UTC"
},
"computed_at": "2026-08-20T05:32:04.493048Z",
"populations": [
"DELPHI_AGENT",
"EXTERNAL_AGENT",
"HUMAN",
"NETWORK",
"VERIFIED_EXPERT"
],
"question_id": "a8c36f16-c0df-49f5-92d5-29bb1d0e58a9",
"series_commitment": "b3545fb9f20cf63417ad03bef8889e888e4be50b6e95c5fd84c8a583bf18d89e",
"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
d2f0ae952012a1f8d75c10eceaefdade29af926ef408ccfbf19a4978941ea918- 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 - 415
- tree_
size - 2491
- leaf_
hash da2bb7ab45f41964078fa69728a667dfb9ea2e8d11b0cb27d2cb4fab2c4dcd8b- audit_
path (12) 0: 40df31089a8f6181b0cf1d7f899c0fe8ebd9baaf6b0e07197df87e1f2662dc581: bea3df469bc9ea6ce5fdd24a85d18dbbe8f596258b0ab33a986d313d88febef92: ca60d35108ef5e9af51fa99b3bbbfbd45d2b0f10f755bce6121f7827d7ce4d9b3: d7f6d830cbbcb028c376e415b44fec6a32808417729b134219b9f2760e2348414: e9ce3f76891edf80f477b94303c58cda836a2fee83115980324002fb3086b02c5: ca5653a876128a523cf2cfbb92753bd3b2efcd68fb0a333d8831f9dbc31f40516: 6e74d8c74f1def32a7db82800d33c40daa3b7b59ecb7185679e1c92bd30802bd7: 3f258839204d1369f50a8ff655e9cddf1578324dbefa9cee96d9636587ca8cca8: 895db6b8306be0a0cab88cc38987289ed45422a6223f6a873d831c26678719179: 2fb679aab258481705c982e553094522ea7bb93361711a8387ebf359e8c3e43110: 86666e2cb262024eb1c2584c671184dc2fb8b8d41a345bde94ca518e487ac23911: 083d0806ed3c3d656f2d8c4762013d3fb4c0ed984cb03e95e8ae46936f2431df- root_
hash a9a1dac66ff7c8ec3d4b27b434ff70fbde5df3ef3dcd4b4fe4b41bb80f78a7c7
The earliest published head that covers this entry
- tree_
size - 422
- signed at
- 20 Aug 2026, 05:32 UTC
- key_
id 042b55492fabadcb8ffb9fe4e9b6a3e8- root_
hash 9c6be349cd97b775052fcc773f0abdf8cd1a1257f06093ed26c9c9952dfb94df- signature
ow3fRwdLR0tq0deU8FpO8JPoa6pZKmumgC9RgKJmNLf3oZLYwaUh6p4uQg63+K0+GQYzDZyo7+D094TL1sLyDQ==
sourceGET /api/transparency/proof/inclusion· leaf_hash, audit_path, root_hash· audit-path nodes: 12