METHOD VERSION
HF-METHOD-1
immutable method identifier
17METHODOLOGY
Every number has a chain of custody.
What, when, how, from where, under which method, and what changed since the previous snapshot.
SNAPSHOT DATE
11 Oct 2026
measurement date + publication date
EVIDENCE REFERENCES
12
public evidence references
CORRECTION LOG
old value / new value / reason / effective date
EVIDENCE STATUS
VERIFIED
backed by a public external reference
MEASURED
observed with explicit measurement method
DERIVED
calculated from published inputs
SELF-REPORTED
declared but not independently verified
HYPOTHESIS
plausible, not demonstrated
UNKNOWN
evidence insufficient
WITHHELD
known or potentially known, but deliberately not published
PUBLIC TOOLS
History explorer / evidence explorer / period compare / correction log / reviewed incident log / downloadable static snapshots.