SpaceChain’s Zee Zheng on bitcoin going mainstream and blockchain in space

The company has partnered with SpaceX to launch blockchain payloads into space, and its blockchain hardware wallet was installed on the International Space Station (ISS) in 2019. Last year, SpaceChain completed the first “multi-signature” blockchain transaction in space, sending around 0.0099 BTC (around US$92 at the time) to bitcoin addresses via the blockchain hardware on the ISS.