sequence 1,109

delphi.consensus.snapshot

Appended 30 Aug 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.

← 1108 1110 →

The entry

entry_hash39847f205c6dREAL_UTC

sequence_number: 1109
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 54324c2e-b8fd-4bfd-afc4-1b6e799c095d
logged_at: 2026-08-30T05:30:41.052636+00:00
previous_hash: fb6310e82f938edb994b4c443ec9eb1a309f199d518d7ce10ba9911f2445d395
payload_hash: 0164aec5101e53b8ed254225c88aa165e3a2d88b9ac6fbe6b74f94cc5969bd58
entry_hash: 39847f205c6d308abf25038e09c892b1c478fe2ba531a6749888ada1503ca946

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-08-30T05:30:41.049603Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "54324c2e-b8fd-4bfd-afc4-1b6e799c095d",
  "series_commitment": "842e8cc6b2b07d4997ad6f3b8ed79d146249907263d0a5325fbbfbb6d5e098fb",
  "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: 31aff37c71d404c7292352c78365b39f6be2bd315f0102c3210a4e1bb7c7ae39
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: 1109
tree_size: 2341
leaf_hash: 048dffd0bd0b020b6b8de6b0cc840d345b42208fff8f347c80f817f75cd4db65
audit_path (12): 0: 5f5f5363330863a2bb0ea3a92a1662b09266a13c979653dba4877d082e52b4581: 7c9b434a263885442dec85d025641ae317563b3e3838fece0b37cf011972daaa2: ffb952a51bfa497690b08e3fe1fb9ea8286cb507542bbdc87fe3ab99a5b963573: 9e64e9935c6d2296157cfea59d898a4bd91cb5c1b4af8af1c4fcad08cf04d66c4: 082abd3851e6828c8ff227c8cb876ad3b2f35792788c1ec7782d22c728720ade5: 8947d8a1e70be2b634115b93456cd4640838c379021b8f3207e435521e78989e6: 3330710dd5fef91aa0e763e3b3c0b21b7b27e549cf2bfbc05fee8e8bfb1f42b77: bbfee2f96690132143d2a2a16089df72535201b31174873b1f1a4d4c85a029a98: 6ce18fb0b650e54a2c9454c3e9abde48f8386826f5bd1752662ede2993ff557e9: e4979eb1a845b9e87ed1dae5e71668989143fa3d9cf0261e0f77022718d3602e10: 9cc5fac487aa9ec1c73baef673025a398e2ca2721a82dbc4c270eb2473aaf7be11: bd18df2de60e205be411a53ea96887ec76f5a16c15250bf48e3f90dc788abbaf
root_hash: 9f32e37b52a81f4fc0f11a1b956464ef6acde09c58b0ce26dc44277199cb7df0

The earliest published head that covers this entry

tree_size: 1133
signed at: 30 Aug 2026, 05:30 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: f93488269a5aeaf9d50291920769e871ba9d361f0fb72089c9ba41c88a2727b6
signature: nnzoG8Yk362jKSvRmRO456zSfVqvhFq0AoyJZsV0jjpigKArT+n7iaJbA8sAIeqGXEUgCqPLF9MrRlQug43xAA==

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