sequence 1,421

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.

← 1420 1422 →

The entry

entry_hashb4df6236a48bREAL_UTC

sequence_number: 1421
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 54324c2e-b8fd-4bfd-afc4-1b6e799c095d
logged_at: 2026-09-05T05:30:42.011517+00:00
previous_hash: f655ceec128992f12d1a6532f3ae4863ec2f6f1b4e79fffb144ad777882813d6
payload_hash: a44ebe5afa5dc08901360a24a85e0ea2db541edbde334ba4c072a0848f26e729
entry_hash: b4df6236a48b290063110f5bfa0a203f6063f965a43102060b2cd626f1f5c846

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-05T05:30:42.004293Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "54324c2e-b8fd-4bfd-afc4-1b6e799c095d",
  "series_commitment": "203a4c789f9d6173164b87c915fa12dd2ebc3e26a69b5876ee3c5a16c05aef17",
  "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: 29ce6b7db45c4be695f209f97c67da1862080d6069ce4f388e7ade4ec5266655
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: 1421
tree_size: 2265
leaf_hash: 40ae9dbf26b3ae0126d686a58a90eb45f673da001bb1058511c37a770ab5e4b5
audit_path (12): 0: 50a280d2397af4ec77fbbf27b64d14c25672ed113a56c234a80d9a3cc0ef95881: 57da3850422c7af2e3521226a9b8563da660b24437b288aec7d9f8edb668bb582: 182088af8d779ebe559d8258d1c577a0f5f0d2703f6582c653bf0f12d8938c3f3: 40079f099a6fa52141eb8cb89ceb2bde432c6c4b41c9ce3919a1a35149ee78634: 8e5b4718bfbeda5475d66e494ee15aad212f4f301ea56efdf35c816198d6540c5: 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