Originally posted by SunnyInHades
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But generally right now blockchain isn't quite ready to replace card payments. I think that will change at some point and I think it will change rapidly.
There's 2 problems as I see it - too many different coins and scalability. Lightning network could potentially solve both of those problems.
Scalability goes from 10s to 1000s of transactions per second (which will see fees at practically nothing). Cross chain atomic swaps will mean if a merchant only accepts BTC, you could still send him litecoin or something else.
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