sequence 1,430

delphi.consensus.snapshot

Appended 5 Sept 2026, 05:30 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.

← 1429 1431 →

The entry

entry_hash320de8f39b44REAL_UTC

sequence_number: 1430
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: d1b83331-68f7-4be7-a625-f7824bccab5b
logged_at: 2026-09-05T05:30:42.092870+00:00
previous_hash: 4f2ecfc4b8a4900eb2af80a5f0ec3e3a8c93d239741a5c824d60010cccef6089
payload_hash: 8d4a6c09445999c56cdb5c1fd914da97d9827b238f15a1639996a549a877dba5
entry_hash: 320de8f39b44d72fc876623e348b47e3ed10a625cf9f8660b3f49494e86f7470

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-05T05:30:42.090492Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "d1b83331-68f7-4be7-a625-f7824bccab5b",
  "series_commitment": "f2749ed36b034e1c143b9700e0ffe404c56dab28feac7a16c9f9c45a59a48394",
  "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: 3b69926dc186117e7c245d3cf092d61b9d412e373f973d2f8535f50fe49fcfd7
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: 1430
tree_size: 2265
leaf_hash: 547fda932f820a1fe686b337cb9edaab9b2d2c3eb7e1988a3e6148887bc180dd
audit_path (12): 0: 4524b5cf8302ac20026e1cd7ee0ffbab06ec4be65b0c56f268a45d77e6d221421: 2eae9a47ca6039fdd7f9f61ded72ced31746eb2cd4d695c33a3899a9e1bff7932: 15109bde455bb1c4baac03a7647c858b59c28fb4ba3d7f0b1db9b69782fec31c3: 25c67c207bd62c55832fef4c6767c92a1edd644a28b4bc86a509e4abf41031004: eb2ad53469a5278129837bf3faf26af1991b9ed24b7535827c85adb2a6fdf4295: 2d7f0151c1724ba0ea8bf06d726643f0f6893ec7bb868e6681848be8fd368c056: ef252f031089471cd75411471a0532012f4deaced96acde8a10c0024e7faaa357: 59548e903d1441fb0d6e6d441d39382bb2fbf2f915e94e4c49c6bda187d8c1278: 73b80563a47162cfa99809097caf5d77512af3a28ebfbf76c6bcfd5f572cc1d29: e4979eb1a845b9e87ed1dae5e71668989143fa3d9cf0261e0f77022718d3602e10: 9cc5fac487aa9ec1c73baef673025a398e2ca2721a82dbc4c270eb2473aaf7be11: 15428b80842f9a0801cf7667918b216c9ce4186d9825e806ba86972b039c03f9
root_hash: 0feab2262fa1e39174e25fc17ea9383a6fe15fa5d22c96afd722849e59baa3f5

The earliest published head that covers this entry

tree_size: 1445
signed at: 5 Sept 2026, 05:30 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 14935c0bde678e80dc3a37641650904de8988691c769149c38b10d54518ed6da
signature: oBabtEvQC4ypaFdP+K4eO6SkxwE6AoHWZOprH3l6t63fcsSRixVw214MPbkS6PXBnFsTXA0rFPKABtwhipFLCA==

sourceGET /api/transparency/proof/inclusion· leaf_hash, audit_path, root_hash· audit-path nodes: 12