The founding article of Machine-Mediated Reception Studies, in its sovereign version of record: the Capture Registry as instrument (dated, preservable machine-composition reception events), the measurement program (PER; Erasure Skew; atomic-token preservation), the family-level rule, the six-operation compositional taxonomy, the writable retrieval basin, the public summarizer self-audit, and infrastructure-layer provenance severance with the dual tombstone-and-resolver citation apparatus carried as a live exhibit. The journal version (Attribution Sharding, under review) is the sober twin; this deposit is the canonical open version.