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Visa is a company processing transactions for a medium of exchange, which is USD (or other currencies). Visa is not a medium of exchange any more than a local

Visa is a company processing transactions for a medium of exchange, which is USD (or other currencies). Visa is not a medium of exchange any more than a local bank is.

nextstepguy 4y ago
So Visa is similar to miners on Bitcoin blockchain and bitcoin is the medium of exchange?