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Re:My professional opinion as a blockchain researcher: I don... by JumpCrisscross on Monday February 12, 2018 @11:17AM (#16359599)
> When he does an inter-bank transfer, why does it take 3 days for to clear?

They chose the cheap, safe option over the fast, risky one. I talked about the difference between net and real-time gross settlement in an earlier comment [1]. TL; DR There is a fundamental trade-off between mutability, speed and cost.

[1] https://news.ycombinator.com/item?id=16154956#16155708

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