Blockchain with proof of quantum work

• URL: http://arxiv.org/abs/2503.14462v1
• Date: Tue, 18 Mar 2025 17:37:22 GMT
• Title: Blockchain with proof of quantum work
• Authors: Mohammad H. Amin, Jack Raymond, Daniel Kinn, Firas Hamze, Kelsey Hamer, Joel Pasvolsky, William Bernoudy, Andrew D. King, Samuel Kortas,
• Abstract summary: We propose a blockchain architecture in which mining requires a quantum computer.<n>We have refined the blockchain framework to incorporate the probabilistic nature of quantum mechanics.<n>This work highlights the potential for other near-term quantum computing applications using existing technology.
• Score: 0.4643589635376552
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a blockchain architecture in which mining requires a quantum computer. The consensus mechanism is based on proof of quantum work, a quantum-enhanced alternative to traditional proof of work that leverages quantum supremacy to make mining intractable for classical computers. We have refined the blockchain framework to incorporate the probabilistic nature of quantum mechanics, ensuring stability against sampling errors and hardware inaccuracies. To validate our approach, we implemented a prototype blockchain on four D-Wave$^{\rm TM}$ quantum annealing processors geographically distributed within North America, demonstrating stable operation across hundreds of thousands of quantum hashing operations. Our experimental protocol follows the same approach used in the recent demonstration of quantum supremacy [1], ensuring that classical computers cannot efficiently perform the same computation task. By replacing classical machines with quantum systems for mining, it is possible to significantly reduce the energy consumption and environmental impact traditionally associated with blockchain mining. Beyond serving as a proof of concept for a meaningful application of quantum computing, this work highlights the potential for other near-term quantum computing applications using existing technology.

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