# Quantum Blockchain using entanglement in time

arXiv: https://arxiv.org/abs/1804.05979 · HTML: https://mlsanity.com/paper/1804.05979/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 16 Apr 2018.

## Built on by (most cited first, 1 of 1)

- [Internet of quantum blockchains: security modeling and dynamic resource pricing for stable digital currency](https://mlsanity.com/paper/2104.07323/) (2021)

## Abstract (arXiv)

We propose a conceptual design for a quantum blockchain. Our method involves encoding the blockchain into a temporal GHZ (Greenberger-Horne-Zeilinger) state of photons that do not simultaneously coexist. It is shown that the entanglement in time, as opposed to an entanglement in space, provides the crucial quantum advantage. All the subcomponents of this system have already been shown to be experimentally realized. Furthermore, our encoding procedure can be interpreted as nonclassically influencing the past.