sequence 2,349

delphi.consensus.snapshot

Appended 5 Oct 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.

← 2348 2350 →

The entry

entry_hasha3f29f628a1aREAL_UTC

sequence_number: 2349
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 4bfc7aa0-f12f-479c-ba06-d8e4cebfe625
logged_at: 2026-10-05T05:30:21.062757+00:00
previous_hash: 86e67cb2a75b0be3223632842ad27ed31c96f31fea85626cc2217f5919fe9efb
payload_hash: 55491da57c0f92b6038978d700e54e3a5b7a1a2ac4ca461a895192120ca9f27f
entry_hash: a3f29f628a1ad4a48cb1129f82f33cef9fad859c34a1f78ee973dd1eb650d672

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-10-05T05:30:21.050280Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "4bfc7aa0-f12f-479c-ba06-d8e4cebfe625",
  "series_commitment": "c90fc0f86f7e360bf4730a34befe2b5780c82fc54a4758c097806813bd67e432",
  "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: f98c93d41bf88def06850149c4a41a58f79fb3d237b7a666baa9942cbc379bd6
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: 2349
tree_size: 2479
leaf_hash: 255d92f2dcb96289c0a35619474f08bb40b4543705c914320ed25a2f2fc076cb
audit_path (10): 0: de062d64eb976c93f0e2ded7ca441a1b151de1c1e7cf720efafbd615389352a11: 76567e27851103f26d6315afe673c921bb379db3096359f5ecb39cf7c06b125d2: d50490e6f9397a688172c1f71c0cf0cb3072af9faa332c2cdd6c896671f0607a3: 28aa0241b051bdc60ed1d5300cf455d21212b810db8d5c02f4c9add05b5f08d34: 7dcd25b3c98562e656f4d02e51c8fe4401ef9961c96942d96328da987977199f5: 92498c2b48d5d20744b9266e1c2f22eeee4d089e5a8ad2645ec11941889cc7156: f60923cdfcb3584afeffa8530ee1cafb60e6a0aff868cd02794b4b9e5ed208eb7: 99ee92a7962953bad0227dbe9ab05c66de08e3b0b7eb51768dee6e3fc62b3b558: 765303d6f29939e50694ecde6538ee53e894bb299166d5a65c9a000adbb546d99: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: 2135d33fc3b42de9408df8505e145fcd175142e943af391ea41c56bc99a1e5e2

The earliest published head that covers this entry

tree_size: 2357
signed at: 5 Oct 2026, 05:30 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 58c8c5ab99dba36e8c6b398578e37592253a716c9cf756f72e78b6606a198d59
signature: xirAN+AGnV8OMbXLhyTyIr8tL2yeCmVCQzEWsX17jN3ibAv8OM5FjxuXn6qQUzvxDbqxwqbiRKdCifgC58vSCw==

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