Spacemesh | 1,308 followers on LinkedIn. Spacemesh is an open-source programmable cryptocurrency powered by a novel proof-of-space-time consensus protocol. | Over the past few years, it’s been impossible not to notice that crypto has been on the rise. And yet, the people benefitting from crypto are overwhelming those who are already doing pretty well for themselves. What’s more: the most recognizable cryptocurrency is consuming massive amounts of energy at a time when we’re in the grips of a climate crisis.