sequence 2,204

delphi.consensus.snapshot

Appended 28 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.

← 2203 2205 →

The entry

entry_hash9b7fd3170b73REAL_UTC

sequence_number: 2204
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 3b91df80-00fc-4a4b-b86e-3310edcb9332
logged_at: 2026-09-28T05:31:39.555464+00:00
previous_hash: 105344bc001d340261b7852356616d2610709c6f05252007ac8cad2474ecec16
payload_hash: 08bcf7cc61bbc94d71eb97fd155b0fbbaf9b06fa0a9a59123f9650e660f90717
entry_hash: 9b7fd3170b7386f626a4b830cb272dde98d4291397ecc0a3f38921db6e607477

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-28T05:31:39.551149Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "3b91df80-00fc-4a4b-b86e-3310edcb9332",
  "series_commitment": "e6553fe8b086daf6bcd8448d69fb91716a35d8c1e014519c5d5142809f8d9435",
  "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: 8fa6ef5ca5b7c715b8fd6ef7de988371146a6455eac078f3162b7d949df7c278
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: 2204
tree_size: 2389
leaf_hash: 9b0d1a547ca9a7e6725c8e78409952c56914ffcf88811e743e153b7ab1db9843
audit_path (10): 0: b10962b2f836899b666d06b8ab69442ead47c0d6622d357a4ae686f494ea48581: 07ce66dd42090ce080e7281582bab3743e7f9c304a03a4525872af839ef764f72: 2fb9a70ce8645f06aa4c3fc18ef951069927cfa4df1c6784ab004089d095afe33: 8285573693690377c5f56c09150338e11062ff5ffc6f2343af99fd370976ce9d4: 49bba1cab8bbdd43d7b9bf51acae2e4ee13dffaca0854642ee664c756f28e05a5: 0349dea9398b8aa40633af547e822a1da687592d53272f4e6aa136e48023a75b6: f30320e32b01d85ee25d3699765f61034c40add7177cc53ee3e39fdfed97b4367: 126596474757e47b31a2f4c9d89412108fada5bcdc7a19a9a1de3d4012be0b578: 03c349147789bfb063beb6c472906eef54792e9077566daa1ada925b4ce9b91b9: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: 4f7f1a3085d540e3b69ac022c801823029c04ad350f74966858670c2038ea3cd

The earliest published head that covers this entry

tree_size: 2213
signed at: 28 Sept 2026, 05:31 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: e6ef985c2d8c02c6ad806a1fed9e7dbd1908860b7059dafd6031fd735675222a
signature: lZwXVggSbp4U9M4HPhBdliPV1fW7ltXRhHCMzOGIxk4uVObAicLqZ+silW7WvZAEBoECv+It+4rRV6HqbOHWCA==

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