The companies involved have promised shorter wait times at restaurants and an overall easier trip abroad.
An apartment in Kiev, Ukraine, is the world's first property to be sold on the online ledger.
The town of 30,000 has attracted entrepreneurs who have created cryptocurrency startups.
The wisdom of the crowd would reveal the way people act inside certain hierarchies.
Maersk has taken part in a proof of concept with blockchain expertize from the IT University of Copenhagen.
Russia should use cryptocurrency, Andrei Lugovoi said.
As the technology behind bitcoin develops, we’ll get a system that essentially automates trust and verification.