sequence 2,150

delphi.consensus.snapshot

Appended 26 Sept 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.

← 2149 2151 →

The entry

entry_hashc5d7fa098864REAL_UTC

sequence_number: 2150
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f
logged_at: 2026-09-26T05:32:12.184116+00:00
previous_hash: c11c918c49e8604179ab71d92de6700cd6aff28e5da4132882f2e0f7dede10da
payload_hash: 682797eed679eae9ffff0aa285e10eef3e9eaf1e72c9c7f28c5d849f8adac9c5
entry_hash: c5d7fa098864ba62f6d7fdf5ad70219dd4d3ba72c1f03b9600bfcab78d0c09bf

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-26T05:32:12.178440Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f",
  "series_commitment": "ec691c2103aec46a64d0af3a03a90e426e2d2e98b05777ff6e279d467da821fa",
  "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: c3050d1e71f023a08fbb73547db3b49f6f761a272c3010c3bc3315e2fd1289f2
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: 2150
tree_size: 2389
leaf_hash: 9d9877415d0380488832c7aade78a13eed1ba1a9fc966a84aef733848aefc607
audit_path (10): 0: cdbe66bfae7400a133ab80b38a1478f2cf6c20352e6803823af1be396aec4eb61: 016536415d1a69846ffc123121d9ba756d3107e6149d1c22ca09f59a708432322: 0edd2559db6e25e879ec30d5a24eb4387010244c4728d4461457c7891253138c3: 06ebb63ecc5f3ba91762a4967f1e1f7ededfb1029c017a34c598d9aabd16be0c4: ce84c24a1d3f5de3d333368de28d51a29649a866b4d9ce9379de23fb6e76ac895: 50cc49d79f0f3c552cc19006c4d6b819801e07bb4acb2a3fb50f66393c28555e6: f4d02cca79f588f9c172b1dc53f54784db35848f8f8b4fa96ae1493d76b463787: 32d97e61743fccf6d32da7a407cb944cdd5c52aa0de4e874e2c78dadf7892a908: 03c349147789bfb063beb6c472906eef54792e9077566daa1ada925b4ce9b91b9: c2a61f9c340fe90eca96b6ee3ce7a915f3c652848ec632eaa3e641ee4f30439d
root_hash: 4f7f1a3085d540e3b69ac022c801823029c04ad350f74966858670c2038ea3cd

The earliest published head that covers this entry

tree_size: 2161
signed at: 26 Sept 2026, 05:32 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 08d42dfc1a68825e48c5ebd6ef8deb02090b8acb5d1f2be9a9e2101b015a8fb2
signature: dB1NOOKbGZYlf8tpl8m7au97B5M49+4SOWOT1aR1A4WPqRzn123pmio+rP0C6SWMEK2kx1MBdDcTjVaJKZkTAA==

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