{"id":"pbft-default-str-fragile","text":"The `default=str` parameter in the PBFT digest function silently converts non-serializable objects to their `str()` representation, which is not deterministic across replicas for types like `datetime` or custom objects — a latent consensus-breaking bug if non-primitive request payloads are introduced.","truth_value":"OUT","source":"entries/2026/05/29/topic-json-canonicalization-risks.md","source_url":"","source_hash":"","justifications":[],"dependents":["pbft-view-change-safety-holds-with-stable-digests"],"metadata":{"_retracted":true},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"pbft-default-str-fragile","truth_value":"OUT","reason":"retracted premise"}]}}