sequence 1,966

delphi.consensus.snapshot

Appended 19 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.

← 1965 1967 →

The entry

entry_hashff3f60287062REAL_UTC

sequence_number: 1966
entry_type: delphi.consensus.snapshot
entity_type: forecast_question
entity_id: f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f
logged_at: 2026-09-19T05:32:21.186683+00:00
previous_hash: d7899103a84bcc7a92cb1d4c0e3b7e89555326c1d689dcad0e54d780fee2a6be
payload_hash: 83c9c3b2ed8a4610733992f7e97069127d07b99726e3f324dc42ef9829d6ac4b
entry_hash: ff3f6028706291c3312e363eddaca9c7cce49fdeb2ac254e8803145b7fe39f08

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

Payload

{
  "timebase": {
    "clock": "REAL_UTC"
  },
  "computed_at": "2026-09-19T05:32:21.182673Z",
  "populations": [
    "DELPHI_AGENT",
    "EXTERNAL_AGENT",
    "HUMAN",
    "NETWORK",
    "VERIFIED_EXPERT"
  ],
  "question_id": "f69e4ff3-bcaa-42f5-a8f1-8044a9975b0f",
  "series_commitment": "da6b647b8f225d371e7aff1bda96184e49772c77226acd89bbc555584577d8ed",
  "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: 9072afc965e3d8e4c195e8b61adae5120f0f0b43529bb9db5419b646189d7342
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: 1966
tree_size: 2503
leaf_hash: 7bf81b47bffe8a569673cf0e89250734442319b8ae19c301d196177f52d2fe10
audit_path (12): 0: 3d58585f26e5b655bdb732bb2e0698219cf7e66595e1e8ac7c0d99a8dbda3df31: 9d3860267818e27a9c2159bb7c6d50e5ddeaf7138d6370ab698eb5350cdddb642: 0d44b509dd63bf10f9ecf51ae14c361f2ba71835a680a1042bc34270aa2097dd3: 0d84bc8a1955a0653a345cc1d5dea770c5c634eb1f59b12c3ad7739e97232dfa4: 54f6b2d915d52510f286db48083b798db309c7204b4a32ca6bc379266f9d9ffe5: 606aaf5303d1bdf7e430fa009f7a3bea14fe2b3ffbd61e9b69f34d4e43ed6c6e6: 4e9fd2189aa35b553f1041a8609fcd238f53b35903496c99c13850a60cd15a6d7: 8018b7deda34c522f2ac360ffdd9cc85624549e7457ea594e86a7f04e9a264aa8: 5ab1df6751f0dac25a6ce29d97587d6e08dcdd2d94987223ead725483527e08e9: 5fb1ed5f5a35e845232517268bf48c5384c29f290dd198d1d6f802756a73a76d10: 9cc5fac487aa9ec1c73baef673025a398e2ca2721a82dbc4c270eb2473aaf7be11: aa4b429c2497df4f846fe6b3e60223989226aaf0ba6013dc6f90c17afe986d9d
root_hash: c97f540ea605dcd0a8a4165044c60093cb885a8303800b87d215a424a4d5258d

The earliest published head that covers this entry

tree_size: 1977
signed at: 19 Sept 2026, 05:32 UTC
key_id: 042b55492fabadcb8ffb9fe4e9b6a3e8
root_hash: 030d7ba0b761b8420ec6a8cc0c7a9c0b31f4c2f6ef433ff99c5ab3364ba82ab3
signature: 46yzVUF2EU2OokUFFvY3uF63GWco2kfLcbaKRU/lmofoXQRYagMPrSTh+OnmHDVsj8htaTgxoLPexSkNWBXkAw==

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