15,367 records mapped · circle size = number of objects · colour = share judged unfair by the Haiku adjudicator · arcs show movement to the BM, routed through intermediaries when the documented chain names one (Umlauff→Hamburg, Ratton→Paris, Pareyn→Brussels…).
Verdicts were decided by an AI analysis of documented provenances. These should not be treated as final determinations, but rather as flags for further human review. 3,162 records had unmappable information; 321 UK-made records (BM photographs) and 36 other non-African origins are omitted.