Replication package: The Myth of the Universal Catalog — Infrastructural Legibility and Cultural Disappearance on Spotify

Companion replication package for a manuscript submitted to Big Data & Society. Contains the four-pass ISRC/metadata linkage pipeline, data preparation and deep-analysis notebooks, the executable validation script, the human-audit instrument and protocol, three independent coder files (4,780 track verdicts across 400 stratified release cases), the adjudication queue and decisions, the consensus dataset, the reconciliation key mapping audited cases to linkage strata and population weights, and all aggregate result tables reported in the article. Recomputes the release-level population-weighted disappearance estimate (55.28%, 95% CI 50.56-60.02). Raw What.CD metadata and the Kaggle Spotify snapshot are not redistributable and are not included; provenance and reproduction instructions are in README.md.