  In this paper, we introduce Super Luminal ("xLumi"), a new payment channel
protocol for blockchain systems. xLumi is a simple unidirectional payment
channel that can be extended to a bidirectional payment channel or a complete
network. xLumi guarantees the security of the payment channel's funds by using
a simple set of mathematical rules that can be easily implemented on any
blockchain with the necessary infrastructure. We also give the detailed
implementation methods of this idea using V Systems contract systems in this
paper.
