IndexFair › Methodology › Changelog
/methodology · v2.1 · append-only · last updated 2026-01
/methodology/changelogRelated
Changelog
Append-only and versioned. Every published score records the version it was computed under, so a number can always be traced to the exact formula behind it.
What it means
The changelog is the durable record of every version of the methodology. No row is ever edited or removed — only appended. A brand's score snapshot carries its methodology version; the changelog entry for that version is the full audit trail. Version bumps are classified as minor (additive change, no re-computation required) or major (formulas changed, full re-computation triggered).
Inputs & data fields
FieldTypeMeaning
methodology_versionlabelThe public version label (e.g. v2.1) — major.minor.
applied_attimestampWhen this version became the active methodology.
bump_classenumminor · major — determines re-computation scope.
summarytextOne-sentence description of the change. Append-only.
Process & formula
score.methodology_version = active_version at compute_timemajor bump → re-computation of all scores · no silent overwrites
- Each score snapshot records the methodology version at the moment of computation.
- A major bump triggers a full re-computation; minor bumps are recorded but do not force re-computation.
- The prior version and its snapshots stay on record — the history of a methodology is part of the index.
How it affects public pages
major bumptriggers re-computation; all scores carry the new version string.
minorrecorded in changelog; existing score versions unchanged until next recompute.
Worked example
VersionDateKindSummary
v2.12026-06-24minorVPN profiles go live as audit-anchored. A VPN’s no-logs standing is reported only when an independent third party has assessed it — a published independent no-logs audit, or a court or seizure finding — and is described as assessed by independent audit, naming the auditor and date, never as proven or guaranteed. No overall VPN safety rating is published; service quality is shown separately from this factual no-logs standing. Current.
v2.02026-06-09majorThe betting score now differentiates on the absolute market margin measured from each operator’s own live prices. Brands with a genuinely sharper product reach the top of the scale on measured merit; brands we cannot yet measure are placed at a neutral position rather than penalised. Vertical eligibility keeps casino-led brands out of the betting ranking.
v1.02026-06-02majorFirst public methodology. The headline score combines regulatory and compliance standing, aggregated genuine user-review signal, and operational signals — computed per country and per vertical, and displayed on a fixed band that keeps licensed and offshore brands on separate, non-overlapping scales.
No row is ever edited or removed — only appended.