{"id":9826,"slug":"spotify-african-chart-consecutive-day-duplication-rate","title":"Consecutive-day duplication rate on Spotify’s four published African charts, 13 August to 10 November 2026","source":"Computed from this desk's own retained Spotify chart snapshots for Egypt, Morocco, Nigeria and South Africa","source_url":"https:\/\/kworb.net\/spotify\/","source_type":"computed","method":"Spotify publishes a daily Top 200 chart for exactly four African markets: Egypt, Morocco, Nigeria and South Africa. This desk retains every collected snapshot for all four in afw_chart_snapshot and afw_chart_entry. For each market, every pair of consecutive collection dates in that market's full retained history (83 pairs per market, 13 August to 10 November 2026, the gaps in the collection calendar producing non-daily but still consecutive pairs) was compared position by position: a pair counts as identical only where the artist, title and reported stream count match at every one of the 200 positions. Nothing is estimated; this is an exhaustive position-by-position comparison of the desk's own stored rows, the same method used in this desk's earlier chart-snapshot-duplication-check-27-28-august-2026 dataset, extended here to the full retained history and all four markets. The method cannot say whether the upstream source (kworb.net) served a stale cached page or whether Spotify itself had not refreshed; no cause is claimed, only the fact of the duplication.","unit":"pct","license":"Afrobeats Wire's compilation and analysis are licensed CC BY 4.0. Rights in the underlying source data remain with the source named above.","confidence":"high","retrieved":"2026-11-11 02:12:39","n":4,"first_party":0,"columns":[{"key":"country","label":"Market","type":"text"},{"key":"chart_positions","label":"Positions compared per pair","type":"number"},{"key":"pairs_compared","label":"Consecutive-day pairs compared","type":"number"},{"key":"identical_pairs","label":"Pairs identical at all 200 positions","type":"number"},{"key":"duplication_rate_pct","label":"Duplication rate, %","type":"number"}],"rows":[{"country":"Egypt","chart_positions":200,"pairs_compared":83,"identical_pairs":1,"duplication_rate_pct":1.2},{"country":"Morocco","chart_positions":200,"pairs_compared":83,"identical_pairs":2,"duplication_rate_pct":2.41},{"country":"Nigeria","chart_positions":200,"pairs_compared":83,"identical_pairs":2,"duplication_rate_pct":2.41},{"country":"South Africa","chart_positions":200,"pairs_compared":83,"identical_pairs":1,"duplication_rate_pct":1.2}]}