sequence 2,275

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.

← 2274 2276 →

The entry

entry_hash1835102cccaaREAL_UTC

sequence_number: 2275
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: 29f1e88a-b6de-480c-bc2f-f234c647455d
logged_at: 2026-10-01T05:32:02.580948+00:00
previous_hash: b92bb3ee7b7de34df3e462d2effa4afa3a52f646a2f87687830bba3b9cce8c7a
payload_hash: c149ae314b9dc1adced73001b13ce6dd22de0ba00fcee15f45e59697f5b16c3d
entry_hash: 1835102cccaa5dc09e0b69d4f24c9fabf7a88e0952386d2f1fb31cfa47ce6d8c

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-10-01T05:32:02.544420Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "29f1e88a-b6de-480c-bc2f-f234c647455d",
  "series_commitment": "d4bf728c4403ba011f04814a049ebbf4d71a2afce6da28aa91c02b57f887b9f4",
  "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: beff84da0696f709a085725bdd16546d6ed8e3add80c07170efc2768f359364f
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: 2275
tree_size: 2389
leaf_hash: 2d35c0d1768298455478c260daffa661a56c78206340af7278401ad571a0f700
audit_path (10): 0: 0a9514f267b5fee7588f229da3f6e709a5c3e6180a1de805ef06b6144313f87f1: 2af5ce7353107a3e88e49a7b847c808ecbee5d2afbcf65b7cdc95ae6f33a56932: 95e45a36fe6f5903206b65e17fd0d114a8ddba08bdc1d36d52e535b1628c7e513: e8a87685ffc0c045844f48048e15e73d87bc3b0e8f22683bd6dc45e7883291754: 17915314b26d6769039107000ee4044a98d3c61a06eb7fa7121566ca8a4107f35: 453a26486f28dbe1e75e2f01f0d5e9fd3fe713113fe66b00eb5763b442ca537c6: cbc4db984571c13242d6f4b551c8d58b2ac60b14ae1df2945b6a2428d447c0bb7: 126596474757e47b31a2f4c9d89412108fada5bcdc7a19a9a1de3d4012be0b578: 03c349147789bfb063beb6c472906eef54792e9077566daa1ada925b4ce9b91b9: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: 4f7f1a3085d540e3b69ac022c801823029c04ad350f74966858670c2038ea3cd

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