Nexus is a decentralized peer-to-peer payment system that unlike Bitcoin, has a multi-threaded consensus protocol. This feature allows users to cancel and refuse transactions. Its network has three channels: (1) GPU mining, (2) CPU mining, and (3) Nexus Proof of Stake. The extra channels provide additional security because an attacker would have to control 51% of the votes across all three channels in order to succeed. To achieve a truly decentralized system, free from all centralized institutions, Nexus is developing the infrastructure to broadcast its blockchain from satellites in space.