{"id":"hexspeak-valid-set-complete","text":"The valid Hexspeak character set `{A,B,C,D,E,F,I,O}` is exactly the six hex letter-digits plus substitutions for `0→O` and `1→I`; digits `2-9` are the only rejection trigger.","truth_value":"IN","source":"entries/2026/06/06/hexspeak-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"hexspeak-valid-set-complete","truth_value":"IN","reason":"premise"}]}}