3 ms·And keep a list of all serial numbers of stolen money to check against.by dkersten 6y agoAnd keep a list of all serial numbers of stolen money to check against.Emendo 6y agoThis sounds like an use case for blockchain.aliswe 6y agoNahdkersten 6y agoOr... just keep a database with an API you can look up. There is no need for it to be trustless and distributed.