sequence 2,100

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.

← 2099 2101 →

The entry

entry_hash9f1b176099c8REAL_UTC

sequence_number: 2100
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 3b91df80-00fc-4a4b-b86e-3310edcb9332
logged_at: 2026-09-24T05:31:21.457184+00:00
previous_hash: 877961ffeae433a771a2c3a730cfd9dc7d0e9d41999ce6bb9dc2a359a152f569
payload_hash: 37ec782d1f5ef9f8d7ea50b7e9da6b87cdd923e304c678fe07e8c2d06e3f4e2d
entry_hash: 9f1b176099c8efcdacdfe07a3b481cae6e842943661e9768471760539234b160

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-24T05:31:21.453576Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "3b91df80-00fc-4a4b-b86e-3310edcb9332",
  "series_commitment": "4581781d4c9e953fb0533579350a966ef38d88dd3c6c4621679269b6ccbc9f13",
  "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: 69a398d5604129637fd793137f7298ca48ca66df30297177ae73199109081582
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: 2100
tree_size: 2539
leaf_hash: 71ebe278c730e795a0353cc3619f0a5647ee58227f06ecdabef20b45cddf1cfe
audit_path (10): 0: ebaa4e1bd4af22e04c254fa3a0ecb1274fdd245b98f468f180f438a0a7e5b65a1: 4c418245f292f596281ba5814d6e7069867b8af7ed93d6119edc35049d7972ed2: b15600f2557cb0e35455f34add32f669ec308824a408c30a22fca94427830fdb3: c8c67b194d77a900b07fea27ce0fa8a7320de5ac55608eb16fe714e19dd2f0f24: b50be66eb4e6d6522ae5a50862f42e8f6a5663bd96a07ce297353a7a9eac28d85: 3409250b2a7726d8587c9c1abf72ab8a5f5c9da864649b1684c0d122c06aa26c6: 97e580b0f254128201e36dc81f73bca17443fd5e21d28fd611b3832d3123cce37: 32d97e61743fccf6d32da7a407cb944cdd5c52aa0de4e874e2c78dadf7892a908: 321ed8c579fb458cf9d641499610990c325930a6b642ae4ae2c09fdf055db9769: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: a725a4fc38f9ab511b484535b065f2f1d402485b98d909de2b2560ef782dde90

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