Black holes and cryptocurrencies
arXiv:2205.12995
Abstract
It has been proposed in the literature that the volume of Einstein-Rosen bridge is equal to complexity of state preparation ("Complexity=Volume" conjecture). Taking this statement outside the horizon, one might be tempted to propose "Complexity=Time" correspondence. In this Essay we argue that in a blockchain protocol, which is the foundation of all modern cryptocurrencies, time is emergent and it is defined according to a version of "Complexity=Time".
15 pages. Essay written for the Gravity Research Foundation 2022 Awards for Essays on Gravitation (extended version)