sequence 2,350

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.

← 2349 2351 →

The entry

entry_hash1d8410ff4d16REAL_UTC

sequence_number: 2350
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: a8c36f16-c0df-49f5-92d5-29bb1d0e58a9
logged_at: 2026-10-05T05:30:21.100797+00:00
previous_hash: a3f29f628a1ad4a48cb1129f82f33cef9fad859c34a1f78ee973dd1eb650d672
payload_hash: a38f7072583cc29e3830fb3c31705cbdde79243a33b0dd4d2d21734b075c4e6c
entry_hash: 1d8410ff4d16bb1e7b3fc1e156f5f00a21085ec070be5aa8a4e3247712631503

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-10-05T05:30:21.079648Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "a8c36f16-c0df-49f5-92d5-29bb1d0e58a9",
  "series_commitment": "cb795ea9acf3fce13696643d31dce0e2c81eb53bbd2dde0d2c0df3f80bf76db9",
  "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: af2b6cb1160daf742abe7b09d375da6b5a4084c552a613fdfb0c8407d1283c0c
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: 2350
tree_size: 2491
leaf_hash: 016f0bddae5c16f82b62c97a780f5124e313cc9395028cf215bfddeb76331225
audit_path (10): 0: d17a40d9048cac66161f5dbfd92fa5495783e783e53d7ac2a0bb6d3dd7b85d111: 36a4f185649138f6357ea769635f9b66a0b816382d70f4cd372c9b03ba14a5142: d50490e6f9397a688172c1f71c0cf0cb3072af9faa332c2cdd6c896671f0607a3: 28aa0241b051bdc60ed1d5300cf455d21212b810db8d5c02f4c9add05b5f08d34: 7dcd25b3c98562e656f4d02e51c8fe4401ef9961c96942d96328da987977199f5: 92498c2b48d5d20744b9266e1c2f22eeee4d089e5a8ad2645ec11941889cc7156: f60923cdfcb3584afeffa8530ee1cafb60e6a0aff868cd02794b4b9e5ed208eb7: b23da60f2e510b29c72a07aff7b47743065a5b6d552266a144958cf77a987e958: 765303d6f29939e50694ecde6538ee53e894bb299166d5a65c9a000adbb546d99: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: a9a1dac66ff7c8ec3d4b27b434ff70fbde5df3ef3dcd4b4fe4b41bb80f78a7c7

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