Series · XV-SAF-BASIS · method version 0.2
The record, as issued.
Every publication is frozen at the moment it is issued and never recomputed from later inputs. This page is the audit trail: what was published, when, what it was derived from, and what has since been corrected.
1records
2026-09-23first publication
2026-09-23latest
Publication records
| Published | Traded over production cost | SAF premium over jet fuel | CIF over FOB | Europe over Asia, FOB | California over Europe, FOB | Dispersion | Corr. | Digest |
|---|---|---|---|---|---|---|---|---|
| 2026-09-23issued 2026-10-19 | +492.75 mixed dates | +1,346.75 | +14.75 | +443.00 | +798.00 | +1,241 | — | dc56e54727 |
One record is a level, not a series. The index only becomes informative once the same spread has been published weekly for several quarters, because the change is the signal and the level is not.
Spread history
Corrections
No corrections issued. A record that has not been corrected has not been quietly edited either — the file behind each row is byte-identical to the one first published, and the digest on this page is what proves it.
A published spread is never overwritten. A correction is a new dated record carrying the previous value, the corrected value and the reason. Both stay in the series forever.
Machine-readable access
| Endpoint | Contents |
|---|---|
| /feed/latest.json | Latest published record: every spread with its legs, assessors, bases and dates. |
| /feed/series.json | Full series: one row per publication, with digest and flags. |
| /feed/meta.json | Index metadata, method version, cadence, record count and latest digest. |
| /feed/verification.json | Latest independent verification: what was re-derived, pass or fail, and the digest it was checked against. |
| /feed/series.csv | Every publication as a flat row per spread. Loads straight into a spreadsheet. |
| /feed/latest.csv | The legs behind the latest publication, one row per leg, with assessor and source. |
Verify a record yourself
sha256sum data/series/2026-09-23.json # dc56e54727cc430e3be7e8df17f8c7ce9745e050b3d361c48fe50409cc13906f
If the hash of the file you hold does not match the one published here, the file has been altered after issue and should not be relied on. The digest is the only claim this index makes about its own history.