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The original was posted on /r/opensource by /u/Ok-Conversation-1430 on 2026-04-12 09:40:36+00:00.
Almost 90% of credit/debit card transactions go through either the Visa, Mastercard or Amex Networks. Those are all American companies, which are in no way open source
So why couldn’t such a network exist but open source ? And if any expert on the subject is here, why wouldn’t it be possible ?
Edit : by “payment network”, I am referring to traditional payment networks with cards and all that…