sequence 1,566

delphi.consensus.snapshot

Appended 8 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.

← 1565 1567 →

The entry

entry_hash99f9e4e868d1REAL_UTC

sequence_number: 1566
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 3707c33d-0301-4c72-8c13-ee685e8a0a88
logged_at: 2026-09-08T05:31:41.852717+00:00
previous_hash: ea46cf1671eb6ee063da35a23edc193eceecb5016ffed4a027954ead06dc20fc
payload_hash: 5989abfbad05c67b20e935b3dac4d228269f336175fcf7f81520a0824c9f224c
entry_hash: 99f9e4e868d17c901eb749ed5eeea79661b56df270c0d3f1bba738ae417b4bcf

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-08T05:31:41.849917Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "3707c33d-0301-4c72-8c13-ee685e8a0a88",
  "series_commitment": "9c9b2e7361b531ed29e2e4cdb5542c5c69f25bb531d3334ca0403cbdaf740f93",
  "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: b77b1330ad27f538df004c1d6bb127cadef7a7deb76889505aab177d0825b964
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: 1566
tree_size: 2239
leaf_hash: 0cf846a6f5aaa6b1607806705dde4e8484b3fc296ea8b7f13da3c4e73c0bea19
audit_path (12): 0: 11786d9d0bff7eeec54c1e05bcc33ff52580fe39b62af2687eca30322e62be021: 6f4fad64d6ac15692e44ee2e68456a9583994a83dd4a310c9aad9f2f49f11a272: 82ae525b8850446a9092cc7af4aff6abe0ae575b8eea763b59084618041a0c653: aada6ebd03991fa1d61f61964da5ddf98cb3d8156ef9befae4c29aee12f5668d4: c63c56181eb3856824b063325b2e6c8ee64431e679d56e9238a6872228f648755: f2f7717586444815727d63f86cc5877958512d732169cabce0cefd8ec595f85d6: a14c441df27a3a317d0289503a03490705cc204897178ef38c051eec450bf5357: f4a858c5afd6d2bbfe79825cc00005d2e5bc4cb6a3723b70509ff06cb4f713008: 49fbc719d10777c21e02e255a1174dbc47e89c67c7b327c5f50e8ea1ffbb5bad9: 5fb1ed5f5a35e845232517268bf48c5384c29f290dd198d1d6f802756a73a76d10: 9cc5fac487aa9ec1c73baef673025a398e2ca2721a82dbc4c270eb2473aaf7be11: 9203a1600de814d3afb819f841569332c7e3b58c4d0e0ea56c377729f25dca49
root_hash: 03dd6fb33b4bd65222257eec0069956926795f14f7354795bcb42af5fe51ba08

The earliest published head that covers this entry

tree_size: 1585
signed at: 8 Sept 2026, 05:31 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: a224a45fec4b50dd9d3a17f401a022e1320b8849bcdcf3109bc5ef8fc4c335cb
signature: xJYNwZXpQpbXcZskXqf+SutDkfY7nOE9BO058X7fOfif0VtoI/OM8Nfg0bN8D3iUjEtOt+FT3k9g7zbVw7vLCg==

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