sequence 2,097

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.

← 2096 2098 →

The entry

entry_hash26d81baa8d58REAL_UTC

sequence_number: 2097
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 3b1bf8d0-fa87-4392-b4cf-333e6cba3622
logged_at: 2026-09-24T05:31:21.427057+00:00
previous_hash: 939c7fa3dffe0bc10dd80a8a0659f7e8a264dee587195594f110e91529510e89
payload_hash: c36cf0e849418d34e2570fa6072d2584603463d1cd3c0fbd3fb90c79df1ff397
entry_hash: 26d81baa8d589a1ac894e9050df990c1c27336785666ebada138b246bb3a19e5

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-24T05:31:21.420712Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "3b1bf8d0-fa87-4392-b4cf-333e6cba3622",
  "series_commitment": "c4730b3e4a4fcc0cf1d2d95857e84f6fe958b958c94e5ff2d15f8e06532b24d7",
  "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: 5b763f4f8e44787269a20c137cd51d2a0105ca8ddaefbcf6aa84ddba0119b9c0
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: 2097
tree_size: 2305
leaf_hash: 52b5ea2a93d7c4d4d1171bb6a74092a51e19642fde370b1e9090c852db25dd51
audit_path (10): 0: 071576db9932483c341ddfbe20359c5c67726cb7e52394b5e75a86eb38eade5c1: 25af6649cd6949302abcb4cf56159f81e945fa5edee7a3dd92c1ee1b3ce863302: 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