sequence 2,232

delphi.consensus.snapshot

Appended 29 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.

← 2231 2233 →

The entry

entry_hashdb3cce5c28ccREAL_UTC

sequence_number: 2232
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: a8c36f16-c0df-49f5-92d5-29bb1d0e58a9
logged_at: 2026-09-29T05:31:20.844234+00:00
previous_hash: f194ba7f0ca6a0416947c65a1a89091fe509ce5935ee242fc7c88ec66939285e
payload_hash: 8b30e38bd4fa95fa84499a17c57924654ee9ad47313697e8cc23bff88d09f4e4
entry_hash: db3cce5c28cc5106667d603d178df625a79d24dea76bc35a49b4fe9faa95c785

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-29T05:31:20.837865Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "a8c36f16-c0df-49f5-92d5-29bb1d0e58a9",
  "series_commitment": "1091152b21b1f032aa5eea3e7af1e99a5d80f38f4f7663124bc25f51970e6301",
  "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: 35f018c096749311f6caa4a3864d4580fe32b7f699ffe22c3fbfb9b3c4db12c7
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: 2232
tree_size: 2491
leaf_hash: 01d763ec01a7818e9baa8b9920bcdef61fb9622a6898e37feba5f18e54cfd396
audit_path (10): 0: af238efa0e6246d7fdd99ed0da2c005086c545a3a97246707f1ed1e833aebd8f1: 175ec4bd610d2c0def7a7a22bf343c32106b476e0c2fee92f9015079b74eed2e2: d2ae9bd3b5dac7636bd99d24dd27f764c89bdbb40927dcf05e121821708fc4033: 7f112a9a92cb543bd054802eb37a2dbd4be21544a78d72a646028a76d6d2afff4: d2c68d760af74d87740ca89ff1ff67d32bd189e548ad56ef83ea1334e37149175: ff576d5d5ebff608e9a429939d33e803b4f824aa935c65d508ae2b3f2eec66696: f30320e32b01d85ee25d3699765f61034c40add7177cc53ee3e39fdfed97b4367: 126596474757e47b31a2f4c9d89412108fada5bcdc7a19a9a1de3d4012be0b578: 669485cd765b7ea152259269d95a4789b962c3f1814e587b3e55ddaf172378ea9: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: a9a1dac66ff7c8ec3d4b27b434ff70fbde5df3ef3dcd4b4fe4b41bb80f78a7c7

The earliest published head that covers this entry

tree_size: 2239
signed at: 29 Sept 2026, 05:31 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 03dd6fb33b4bd65222257eec0069956926795f14f7354795bcb42af5fe51ba08
signature: u8ChL0jIyB0SQwYB26vHeURVL3Ia2DcWQObp46M30jJWJb4SKWQ36EVhUNp29FUDMGkSZ7aAlkHhiTbNS6OGAA==

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