Râu Cao is a user on kosmos.social. You can follow them or interact with them if you have an account anywhere in the fediverse. If you don't, you can sign up here.
Râu Cao @raucao
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Personal recommendation for an interesting talk today: @cbeams will introduce you to the decentralized exchange platform Bisq. 6pm on the Chaos West stage in the assembly hall: events.ccc.de/congress/2017/wi