RELEASE AND CHANGE LOGWhen the data changes,
When the data changes,
the trail stays public.
When the calculated series, evidence base or method changes, we publish the date, scope and impact. Interface updates are not data releases.
Current audited data state
This is not a claim of a historical release. It is the audited starting point for the change log.
- Data identifier
0.16-derived-index-contracts- Latest source audit
- Calculated series
- 2005–2026
- Research coverage
- 1980–2026
- Dated records
- 893
- Unique calculation sources
- 509
PUBLISHED LEDGER
Published data changes
Only releases that genuinely change data, evidence or methodology enter this ledger.
No new data release has been published yet.
The first verified change will appear here with a date, permanent link and a clear account of its impact.
01—05
What counts as a release?
A series calculation, evidence base, methodology, year coverage or verified correction. Design and infrastructure deploys stay out of this log.
- Series
- Evidence
- Method
- Coverage
- Correction