{"id":"crc-polynomial-change-breaks-wire-format","text":"Switching from ISO 3309 (`zlib.crc32`) to Castagnoli (CRC-32C) is a backward-incompatible wire format change; existing data files would fail CRC verification without a format version mechanism in the file header.","truth_value":"IN","source":"entries/2026/05/29/topic-crc32-vs-crc32c.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"crc-polynomial-change-breaks-wire-format","truth_value":"IN","reason":"premise"}]}}