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I agree that Paypal isn't that interesting. As for crypto cards, they have the advantage of an anonymous way (in the case of foregoing Know-Your-Customer processes) of spending potentially-anonymous currency (crypto currency).


which implementation of cryptocurrency is anonymous? My understanding of bitcoin is that it is basically a hash of all previous transactions.

The people who ripped off Mt. Gox went through great lengths to obfuscate their transactions but were unsuccessful.




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