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by lrvick 1467 days ago
I assume you have used credit cards.
1 comments
ChrisLomont 1467 days ago
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.

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nextstepguy 1467 days ago
So Visa is similar to miners on Bitcoin blockchain and bitcoin is the medium of exchange?
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