sequence 2,047

delphi.consensus.snapshot

Appended 22 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.

← 2046 2048 →

The entry

entry_hasha497ed3d32d0REAL_UTC

sequence_number: 2047
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 29f1e88a-b6de-480c-bc2f-f234c647455d
logged_at: 2026-09-22T05:30:42.231536+00:00
previous_hash: 8ccc4fa8327c52f406e141619b21493a68df1fbb590fbcc3794d4baf068c4ddf
payload_hash: c0301938a6f3f8f2a6815d0141748441d4b385387d595ae7f5bcca651ae6d6d4
entry_hash: a497ed3d32d03cfb7d4e73555870f87f6bd31067065e28ed01bdcc051a6c0bd4

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-22T05:30:42.226680Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "29f1e88a-b6de-480c-bc2f-f234c647455d",
  "series_commitment": "608fcb3896c423102df5b1bf07d0f94f50820c8ee98d59796083aa9edb2a30ef",
  "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: e6d5dd60c8c8cf5331a96b66fc4094c28b0a8c395b509ce3af9e5efffa0c12b0
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: 2047
tree_size: 2503
leaf_hash: 292389cf971f19bea99ccda6f0f5b021350dfe0e433e375e54c4390edd8218f7
audit_path (12): 0: b1c3949c02d987da24c7df5e17d559603cdfacee0ec8e707d8a8c7bbc3f5da991: d6d171dee35ba8d1076ace525f522b91fe7f0f1ac038a37bb56075edd0073cb62: 1f75769f193eb8c6060c7e9fc382a8eecf15027553e868d3c97e7447b83a7d3e3: 241b7d382e5c30d703aa2057b6dd9f605ff2051ef4278ff22260ae1190a2a9a94: 34754a6b18db45df483970ae551edb298a26e629b24951179b3e71083a8977395: 67597ad3c6d4b363732dc65bb4d4bcf26e23a5338a996842c3364d3486e683a96: c321285e45ea8a57cf869ad4aefceaa5840e364ae5f182e7b0c7b58aab9054be7: 8018b7deda34c522f2ac360ffdd9cc85624549e7457ea594e86a7f04e9a264aa8: 5ab1df6751f0dac25a6ce29d97587d6e08dcdd2d94987223ead725483527e08e9: 5fb1ed5f5a35e845232517268bf48c5384c29f290dd198d1d6f802756a73a76d10: 9cc5fac487aa9ec1c73baef673025a398e2ca2721a82dbc4c270eb2473aaf7be11: aa4b429c2497df4f846fe6b3e60223989226aaf0ba6013dc6f90c17afe986d9d
root_hash: c97f540ea605dcd0a8a4165044c60093cb885a8303800b87d215a424a4d5258d

The earliest published head that covers this entry

tree_size: 2057
signed at: 22 Sept 2026, 05:30 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 857e19aa8f1cc7614fb9fdf9d058ec533ddc78750211f838d19db42220d865aa
signature: AVZv3xnQwzbC7q66pT25uEydYaqHraujngZDgUc9bLcnBMJY2/3cC1iWHhYJ8lzRwIOowiO3PxPF7hkUEEqqDg==

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