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A comment on Blockchain study finds zero success rate and vendors don't call back. Parent comment

Re:Blockchain study finds zero success rate and vendors don'... by tim333 on Saturday December 01, 2018 @08:15AM (#18576641)
It's worked so far for the Dai, a USD tethered stablecoin based on Ethereum. Smart contracts buy or sell Dai against ETH to keep the price around US$1, the oracles feed in the USD/ETH rate from various exchanges. No actual USD are bought or sold by the Dai contracts.

https://coinmarketcap.com/currencies/dai/

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