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David Chaum created eCash in 1990, which is regarded by many to be the first cryptocurrency. Several attempts were made to create a cryptocurrency before Bitcoin. eCash, B-money, Bit Gold, and Hashcash were predecessors to Bitcoin and influenced its creation. Ecash was conceived by David Chaum as an anonymous cryptographic electronic money or electronic cash system in 1982. It was realized through his corporation Digicash and used as micropayment system at one US bank from 1995 to 1998.