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Re:A faster, more efficient cryptocurrency by pjc50 on Monday February 18, 2019 @12:03PM (#19192103)
> many LEGAL activities that people do not want to show up in a central database

Unfortunately cryptocurrencies aren't just a central database they're a distributed database - all transactions are public. You can try using a tumbler service but since these are obviously money laundering havens they're not going to last long.

Re:A faster, more efficient cryptocurrency by pepesza on Monday February 18, 2019 @12:07PM (#19192136)
Monero, Zcash, Grin. Three designs that are based on different cryptography - all three giving user full privacy.
Re:A faster, more efficient cryptocurrency by DINKDINK on Monday February 18, 2019 @05:22PM (#19195035)
>all transactions are public

Not the case, see payment channels.