sequence 2,277

delphi.consensus.snapshot

Appended 1 Oct 2026, 05:32 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.

← 2276 2278 →

The entry

entry_hashd77896b7cfeaREAL_UTC

sequence_number: 2277
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 4bfc7aa0-f12f-479c-ba06-d8e4cebfe625
logged_at: 2026-10-01T05:32:02.865085+00:00
previous_hash: d6e4bcfd3bce948299e079bfb62121c81a3d0b57fdaa49f9b81bfef590fe8a4b
payload_hash: 2781bd48a0f8767274a0f9a6e67845fd9c8a1c859be82bbd9a4baab03b46b526
entry_hash: d77896b7cfeae3795e56005b3edabda0c2407372762c1d22182224ba22743a40

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-10-01T05:32:02.849400Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "4bfc7aa0-f12f-479c-ba06-d8e4cebfe625",
  "series_commitment": "ca08db05274fd8e8dfd28d8b697e58fcb432bce43c69aa7ddceca7fd61b73fcc",
  "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: 97101771153533dcb78bc6bdc95b6c699277798cb0900b81cb78fb6d23dbc94b
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: 2277
tree_size: 2491
leaf_hash: 2067d9e01ad84260e9ed8f98fe8989bedda91f12ea2c25caa7872252d34f6aec
audit_path (10): 0: 829ab05645f3f2f683c914465bc03b7a23083e01c705f7ce2c7ae4aaf5e695b81: 390df4a0f6b44fef2ee46c23cb2a67ecc9536332273f6196b5cc5cb4da933b572: 9f47046bbc5697bc4d2b2d956eac2bb5b9e206111548a99c17545ccfef241a453: e8a87685ffc0c045844f48048e15e73d87bc3b0e8f22683bd6dc45e7883291754: 17915314b26d6769039107000ee4044a98d3c61a06eb7fa7121566ca8a4107f35: 453a26486f28dbe1e75e2f01f0d5e9fd3fe713113fe66b00eb5763b442ca537c6: cbc4db984571c13242d6f4b551c8d58b2ac60b14ae1df2945b6a2428d447c0bb7: 126596474757e47b31a2f4c9d89412108fada5bcdc7a19a9a1de3d4012be0b578: 669485cd765b7ea152259269d95a4789b962c3f1814e587b3e55ddaf172378ea9: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: a9a1dac66ff7c8ec3d4b27b434ff70fbde5df3ef3dcd4b4fe4b41bb80f78a7c7

The earliest published head that covers this entry

tree_size: 2285
signed at: 1 Oct 2026, 05:32 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 17330c6327e6363b8237bd4a68d5ee420a6d0f745c8d8bab0a90305d6bccba50
signature: TlvQ+bw63yzvEDWcOD5MbBx7k0BSImf5PEym3jf4RkUEAcxz9SLwuoK5KlbtkboyqggWJf91cbdWSuZ+NP3aCQ==

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