sequence 2,398

delphi.consensus.snapshot

Appended 8 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.

← 2397 2399 →

The entry

entry_hashe9b1b7d12e6dREAL_UTC

sequence_number: 2398
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: a8c36f16-c0df-49f5-92d5-29bb1d0e58a9
logged_at: 2026-10-08T05:32:21.094335+00:00
previous_hash: 3fa5051c71caa4d907f17fa8a23c28ccfae90dfadab95df48b01ab6d43119757
payload_hash: fe8cb436a4ef5606fdb857c3568f7ee2bbf846a3b8e23b49e75962397e310982
entry_hash: e9b1b7d12e6dabfca68edd6dd1f5405931c2734a13aa465ed8583accc90a0a3c

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-10-08T05:32:21.087377Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "a8c36f16-c0df-49f5-92d5-29bb1d0e58a9",
  "series_commitment": "489f471502463f357c3184e3f1034e0096eb458cddd19200b1ed77e011165933",
  "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: 1b58d526f6921cebd014e59d0cc569fd701abc7f89e45fe2b78fd581490f1c38
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: 2398
tree_size: 2479
leaf_hash: e712c4b35273cf8eb63f51198ed4964da3b5aa6f87b65a46b135484b682ea6af
audit_path (10): 0: 977a0d3779bef285b431e845850cb207f7547ae20e40d298ceee2a3f6dc00d631: 7c015570d1494590d9af7339431ee8663307aac8c9059b28da302b06b21e3d6c2: 32f4ae1a9c2501900ee51bbfd6de451ca41daac877dbf4a2b3d7134d717c22c93: 6d139f9ed8ada8a8ad0faf4429631a25390bd84f98ec3176d32c2878244c2a444: 5a9b5c3bbfe4872d51680afcd853c4eed3977ea9a65a63d48e58875c83d6ee145: 3e5c5766e4940cb7dda94351a5e27dfc8f706fef9342e7bf2324464ea61fae746: 834c6985c52ea8f25de55920638ea90cbddfd15c7f0b1819c969144787359e5b7: 99ee92a7962953bad0227dbe9ab05c66de08e3b0b7eb51768dee6e3fc62b3b558: 765303d6f29939e50694ecde6538ee53e894bb299166d5a65c9a000adbb546d99: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: 2135d33fc3b42de9408df8505e145fcd175142e943af391ea41c56bc99a1e5e2

The earliest published head that covers this entry

tree_size: 2405
signed at: 8 Oct 2026, 05:32 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 4eef6060c1a86765c41fc475675c40859e9183cff9ea197195987acb5a90176e
signature: QwUVoQex+SpRs5ZFJNphfLrl+ELAHBLeDYNey7Bjm9lof0t99cJa7JPMsk13JMhvdHw5lnWb+IY/ik34rk9tBQ==

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