sequence 2,098

delphi.consensus.snapshot

Appended 24 Sept 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.

← 2097 2099 →

The entry

entry_hashdc56f70b185eREAL_UTC

sequence_number: 2098
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f
logged_at: 2026-09-24T05:31:21.437029+00:00
previous_hash: 26d81baa8d589a1ac894e9050df990c1c27336785666ebada138b246bb3a19e5
payload_hash: 3f3657efff5a12ba413c2ea74ce041cf82185d6217da2dd4dc89a540e4de62f6
entry_hash: dc56f70b185ea6f15040b8b5125cf0859335a52f8d7a227f2809593d3f6fe103

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-24T05:31:21.433116Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f",
  "series_commitment": "cfc8b07998a7d7a49e07374052d90a9371472a687c94dc147b12c1ca80393a86",
  "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: 279cc5e65c0dfc323e49047db7e8454d34c87e0e592dc032754ec78e64a40f75
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: 2098
tree_size: 2305
leaf_hash: 50900c2e377d607bede4b6230932b1279205bf7fd1ed3baefeb2a625b1ed82eb
audit_path (10): 0: e813b931b84b50773e522c9b828d2e3ac679a111f7b6b30c2d0bb52f4cc926751: 01ff86e99d74e60c74345e7e7dd94dbf01b907a607a4f457bc811d63b90d361b2: 2fd8dc370210302f797dc17c7bb703d39e6323787121c0bca21549ed81f22c743: c8c67b194d77a900b07fea27ce0fa8a7320de5ac55608eb16fe714e19dd2f0f24: b50be66eb4e6d6522ae5a50862f42e8f6a5663bd96a07ce297353a7a9eac28d85: 3409250b2a7726d8587c9c1abf72ab8a5f5c9da864649b1684c0d122c06aa26c6: 97e580b0f254128201e36dc81f73bca17443fd5e21d28fd611b3832d3123cce37: 32d97e61743fccf6d32da7a407cb944cdd5c52aa0de4e874e2c78dadf7892a908: 473a4b5543605f153f443f2ff2003dcedaf99566d17832dbb7bf9b100555c5ac9: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: 9259657b60d7c54c7f061a7a621bf2f8747cab0885ee335ac1ed3b6657c9740d

The earliest published head that covers this entry

tree_size: 2109
signed at: 24 Sept 2026, 05:31 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: a31f6b62ecd0a5a7c1047a6a100107a943b510cb76232ce57ee7beb14ed29366
signature: XPXY8TNF05VBXoAX7JDAXHp2GQM3ww78P37YW9pWBrGYGusEDyuG6M7S/0ia9+KBJ+KmQC26izeb9cFfRf3XBw==

sourceGET /api/transparency/proof/inclusion· leaf_hash, audit_path, root_hash· audit-path nodes: 10