Jisho

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Wikipedia definition
1. Currency bill trackingCurrency bill tracking is the process (usually facilitated by any one of a number of websites set up for the purpose) of tracking the movements of banknotes, similar to how ornithologists track migrations of birds by ringing them. Currency bill tracking sites can track currency among the users of that website. A user may register a bill by entering its serial number, and if someone else has already registered the bill, then the "route" of the bill can be displayed.
Read “Currency bill tracking” on English Wikipedia
Read “紙幣追跡” on Japanese Wikipedia
Read “Currency bill tracking” on DBpedia

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