sequence 2,049

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.

← 2048 2050 →

The entry

entry_hashc4ba13b867bcREAL_UTC

sequence_number: 2049
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 4bfc7aa0-f12f-479c-ba06-d8e4cebfe625
logged_at: 2026-09-22T05:30:42.249914+00:00
previous_hash: 368414b74c776184fcb06b88c02e947965fdd447307ed07dcd8a6685c95f902a
payload_hash: 76e5416f76e7cd0c865129affed8f6bc12ef6eea273384f6dbd09f25b5bf8024
entry_hash: c4ba13b867bc7da564bcae0377e85329f1cc3c6d3160792f457781ff902c7217

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-22T05:30:42.246113Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "4bfc7aa0-f12f-479c-ba06-d8e4cebfe625",
  "series_commitment": "c303d099af30be0ec8886681ca8eee49a949862bdcbfaa261b2b8a905ba7a1d3",
  "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: 2af4fad177435969ae9123f50f59276a68fd804b1c72750d6db8876986118e87
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: 2049
tree_size: 2515
leaf_hash: a7da0b82cc056781088a9ea57417d24ad19e5af6d24d695c8c9fb7e01927f96d
audit_path (10): 0: 6c33f9d739bcd6e15b34a896e4649d8bb14268edaab0cf809df57eed477af59a1: 369dd4a75c4deba626aa4b20affc9a9e33bd01360420d3f6418b37db351a68282: 7ae496c9905850bd7db207869dd5f1cf6913084a653104442ee526858bef59523: c45fe800324614f1479db84a4b7cbc943a1c81f43cddd613e688cb53148f1c6d4: a760a162330bdc84bc075c4894261393fd923a8e5442b5e6467037dc266fe4db5: 02d0dde49bb94e626ee08c2578f2d51d2b820b89a132a330ac2c7e0011eed04b6: 97e580b0f254128201e36dc81f73bca17443fd5e21d28fd611b3832d3123cce37: 32d97e61743fccf6d32da7a407cb944cdd5c52aa0de4e874e2c78dadf7892a908: 42bcd2f1a75494aef2c027c7b7df37127b336fd1fc6fe4575a64ee72af9e41b19: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: 94ed3e67e0f3ca6ab90e872a7f03020d191548311e8610028e47ddc18fbfbf90

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: 10