delphi.consensus.snapshot
Appended 16 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 - 195
- entry_
type delphi.consensus.snapshot- entity_
type forecast_question - entity_
id ba007bf6-84af-41a3-bad7-f36ecf2ac953- logged_
at 2026-08-16T05:31:41.359384+00:00- previous_
hash 37be9474b6a87bbddc60491b91f7db4f310ed721914bdb4226d0bae636a638e4- payload_
hash dc055fd0234c68e43c455a0418bdac3fbd695eb1d342491a0dc51fadf6a60cd3- entry_
hash f4513bab94383e77fa956498568fd8d5ff6d5fede22b92af7f32b897a1450ede
sourceGET /api/transparency/entries/{n}· one entry, as served to this reader· payload served
Payload
{
"timebase": {
"clock": "REAL_UTC"
},
"computed_at": "2026-08-16T05:31:41.353406Z",
"populations": [
"DELPHI_AGENT",
"EXTERNAL_AGENT",
"HUMAN",
"NETWORK",
"VERIFIED_EXPERT"
],
"question_id": "ba007bf6-84af-41a3-bad7-f36ecf2ac953",
"series_commitment": "84ae1b50f9d0e86b09c5f89fd937102fc2ed9247658f626274718f37b60f0d4f",
"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
cc602c410cc7069153319403d5671a8dfe8c9bea5acd53bd1f894c733e41f59b- 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 - 195
- tree_
size - 2323
- leaf_
hash e2c4f3d365ed867b54300001f286408134397b26f7be4920115f08b4d7865231- audit_
path (12) 0: 86f450484f0287b303bfd54e640a411c41cff41dc36bddf2b27c24a7dff75df01: c43085c61855447abf8ae4d5543bce6ceb8e6b78d0c860ba19fbb69ca9cd781f2: d1e515926cecffb326f4dc61a56ce9569aeec589ad0816e78c6178ed82aac4c03: a8a08bca9deec95709497518d54e110deffe1e7ea0246fa5383aa5639dd52a724: b6d017ce8c58d3ecec9ef7ee1363be3ac193173c87c4f036c07f007292f1f7e75: fc441ad496235ad68d0ad62d88ed053be8000557ddba9a742a39c6c06af3a15f6: d84113033297e6a1a6778c4a1e0094059ebbb1414eced4e82d59b1e29bed26c17: 8e3ada3865734ef89cf9ebd82b633327831f303fabc83306d43c8e1c4685702d8: 6e5b02022079dc614c5f74ca1c784cf9700d832e05c2eec11f0ad0a37376b46d9: 2fb679aab258481705c982e553094522ea7bb93361711a8387ebf359e8c3e43110: 86666e2cb262024eb1c2584c671184dc2fb8b8d41a345bde94ca518e487ac23911: c3259a319fb9b811eedac153ce91727bb54f7b550d8cceab957b75c3a0564058- root_
hash d5cdf3ada5e9d6ff6f86cc94c6a7cd9965df1cd86b6e68dd8030daf1fd3631be
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