sequence 942

delphi.consensus.snapshot

Appended 27 Aug 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.

← 941 943 →

The entry

entry_hashc43640de879eREAL_UTC

sequence_number: 942
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: cd22f6a9-1eb7-4927-a2e9-6736a77b75cc
logged_at: 2026-08-27T05:31:41.722692+00:00
previous_hash: df69215b4d5cc7ea762bf29698dd281f43bfd2f903a4cdf6a13e7278349bb223
payload_hash: f28679d7a23acd66246a9c7952421b5ffbb40916f01f118fab9035ee4ec6c1c1
entry_hash: c43640de879ebe207887fb246a0692427f50bacfaadf07d7c01574b48918efeb

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-08-27T05:31:41.719607Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "cd22f6a9-1eb7-4927-a2e9-6736a77b75cc",
  "series_commitment": "d09df80f198dac0681c2e1f495fb1d158c9c676b9e99574d8a99ade0ef2e601e",
  "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: e900b7f304c3d966b499ea946e68ddf8a70112f0564468badc72e613394f2b24
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: 942
tree_size: 2479
leaf_hash: 94e84340d068e3f8775fac221b773d83910bc7ba3717b686408507a7c64cf7a1
audit_path (12): 0: e9856a97aa15406d0ab1dc46677175c60539493b64d72f2a646be5305486db931: 76540535b6417a0d3fa31f58277fff1d05e381e037c0e562cb7a6457e42ff33b2: a237d08b82fe1c53ba46c32bce20c6d9cb76f0d75a8043afaf04bb7aee84ea5c3: c9c8c362a7ecdccc19a7672ba4001073cf861c675ade239244909d0e3c7a3e0f4: 4aeda3d843ef10be90d9659f518efeb4352e4f255b4919d31b8fe58f748367475: a4ff2459afb57ec6e04ab81c0944b7e45e77c02fa08b12d05f7c22eaad48ced76: 0b2df4116ce96d4c1fa68d027745d1dc76550ebc49d5cb7aa6fcb4e26ccf8f8d7: 9f20cfd56c132d1d00fe76cb2e482a3a9b4fbe96bc0d292d29ba8016ce161e9d8: 184a24c3b623669a5fc418f1a01a448ab12c5b650e771370beaf16f761dd2e6c9: e5a5c76fa4bfc3f31f74c026263990b303ea76d2ec828987b307239036c908ac10: 86666e2cb262024eb1c2584c671184dc2fb8b8d41a345bde94ca518e487ac23911: 8d949d6aef53b2e3322ef5e232755263eaea63b886b405d936c87ac0c842b6a1
root_hash: 2135d33fc3b42de9408df8505e145fcd175142e943af391ea41c56bc99a1e5e2

The earliest published head that covers this entry

tree_size: 953
signed at: 27 Aug 2026, 05:31 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 777b84e80ce59d38be10789755416a4f30978c344b4fac71e55a1730db98b7a2
signature: RuM+HDdwLwkwChNgs5UCcJZC9MkAJ3Wm0H42BkAdbOcleJjXbre134gogmmC+Veo5jcMHalx4/2FVClJdH0ADg==

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