sequence 55

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.

← 54 56 →

The entry

entry_hash3f333ce6b266REAL_UTC

sequence_number: 55
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: b6f50ed5-05a7-40ca-90e0-588fcc89df0b
logged_at: 2026-08-15T15:53:37.359992+00:00
previous_hash: b4f6975d9ad75e5ac1b3d71576f570364f5621327b2c252ba06971fd9ad7d2b0
payload_hash: 4b66ce271bf14fbb61adedaa68568cc24f1b3cc8042d3b93535689efd1c843a2
entry_hash: 3f333ce6b26689d3be3fbbb42b7adefe72f129b75f3133768f75c11412ce654a

sourceGET /api/transparency/entries/{n}· one entry, as served to this reader· payload served

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-08-15T15:53:37.356741Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "b6f50ed5-05a7-40ca-90e0-588fcc89df0b",
  "series_commitment": "0fba345e51a6f5e911feefc5902c3a3a8738a3223eef0ff6354d0daca2d6234c",
  "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

migration 0021 salted this digest · both versions coexist in one append-only log

commitment_versionv2stated in the payload

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: 995a1ea8f13fad873809d1e8a5c10d4b09333dbb1abce8435394999fd4add1ba
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

computed in your browser, not on the server

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: 55
tree_size: 2265
leaf_hash: e5cda8ebb9c4ebb21a6e06bcf6fc8bec14de2cc86c30f5ba693617d9ce670662
audit_path (12): 0: c4175b4560485a13adc2a6d8997a9b2357f74ecc5640b33f9c5f645ea3f1b5b01: 96e406adc6053a4110a5cffc307df681ba31180996cd9c9f58cc4646df497b1e2: 2c888ed5658ad74af4eec38d1bf83a7f45f6f309547e37a50916a13b27e43a743: 59b626cca7986be0b6ec44fe0d4d89e3fdbd22110dbe11bf0c1a9d22fcaf178b4: 2470c45a41e5b2338cd0a79e1b28f402a0e7e23251bee7ed256b2f8f028ccbe75: 0dec549ee6527dafc0e801068f2df8c4eef8fcb9972397c6eb58217673bbfe9c6: 432b3bec17cc8d9bd118f5d2d11fc56d0578ec1940af60be2192f2f1b8d43dc67: 925d039cfaa2795efce751d71988395a9d8544d4910a71d82c761e6c8e51ba2e8: 6e5b02022079dc614c5f74ca1c784cf9700d832e05c2eec11f0ad0a37376b46d9: 2fb679aab258481705c982e553094522ea7bb93361711a8387ebf359e8c3e43110: 86666e2cb262024eb1c2584c671184dc2fb8b8d41a345bde94ca518e487ac23911: 15428b80842f9a0801cf7667918b216c9ce4186d9825e806ba86972b039c03f9
root_hash: 0feab2262fa1e39174e25fc17ea9383a6fe15fa5d22c96afd722849e59baa3f5

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