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A review of quantum and hybrid quantum/classical blockchain protocols

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Blockchain technology is facing critical issues of scalability, efficiency and sustainability. These problems are necessary to solve if blockchain is to become a technology that can be used responsibly. Useful quantum computers could potentially be developed by the time that blockchain will be widely implemented for mission-critical work at financial and other institutions. Quantum computing will not only cause challenges for blockchain, but can also be harnessed to better implement parts of blockchain technologies including cryptocurrencies. We review the work that has been done in the area of quantum blockchain and hybrid quantum–classical blockchain technology and discuss open questions that remain.

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  1. Fehr, S.: Quantum cryptography. Found. Phys. 40(5), 494–531 (2010).

    Article  ADS  MathSciNet  MATH  Google Scholar 

  2. Nofer, M., et al.: Blockchain. Bus. Inf. Syst. Eng. 59(3), 183–187 (2017).

    Article  Google Scholar 

  3. Nakamoto, S.: Bitcoin: A Peer-to-Peer Electronic Cash System. Bitcoin, Bitcoin Accessed 5 May 2020

  4. Buterin, V.: Ethereum white paper: a next generation smart contract & decentralized application platform (2013). Accessed 5 may 2020

  5. Atzori, M.: Blockchain technology and decentralized governance: is the state still necessary? SSRN Electr. J. (2015).

    Article  Google Scholar 

  6. Yaga, Dylan J., et al.: Blockchain Technology Overview. NIST (2018). Accessed 5 May 2020

  7. King, S., Nadal, S.: PPCoin: Peer-to-peer crypto-currency with proof-of-stake (2012). Accessed 5 May 2020

  8. Editor.: Blockchain 2.0—What is Ethereum [Part 9]. OSTechNix (2019).

  9. Wiesner, S.: Conjugate coding. ACM SIGACT News 15(1), 78–88 (1983)

    Article  Google Scholar 

  10. Bennett, C.H., Brassard, G.: Quantum public-key distribution reinvented. ACM SIGACT News 18(4), 51–53 (1983)

    Article  Google Scholar 

  11. Unruh, D.: Computationally binding quantum commitments. In: Advances in Cryptology—EUROCRYPT 2016 Lecture Notes in Computer Science, pp. 497–527 (2016).

    Chapter  Google Scholar 

  12. Ambainis, A., et al.: Quantum attacks on classical proof systems: the hardness of quantum rewinding. In: IEEE 55th Annual Symposium on Foundations of Computer Science (2014).

  13. Fehr, S.: Classical proofs for the quantum collapsing property of classical hash functions. In: Theory of Cryptography Lecture Notes in Computer Science, pp. 315–338 (2018).

    Chapter  Google Scholar 

  14. Unruh, D.: Collapse-binding quantum commitments without random oracles. In: Advances in Cryptology—ASIACRYPT 2016 Lecture Notes in Computer Science, pp. 166–195 (2016).

    Chapter  Google Scholar 

  15. Bertoni, G., et al.: On the indifferentiability of the sponge construction. In: Advances in Cryptology—EUROCRYPT 2008 Lecture Notes in Computer Science, pp. 181–197 (2008).

    Chapter  Google Scholar 

  16. Lutomirski, A., et al.: Breaking and making quantum money: toward a new quantum cryptographic protocol. In: Innovations in Computer Science—ICS 2010, Tsinghua University, Beijing, China, January 5–7, 2010. Proceedings, pp. 20–31. Tsinghua University Press (2009)

  17. Zhandry, M.: Quantum lightning never strikes the same state twice. In: Advances in Cryptology—EUROCRYPT 2019 Lecture Notes in Computer Science, pp. 408–438 (2019).

    Chapter  Google Scholar 

  18. Coladangelo, A: Smart contracts meet quantum cryptography. (2019). arXiv:1902.05214

  19. Sun, X., et al.: A simple voting protocol on quantum blockchain. Int. J. Theor. Phys. 58(1), 275–281 (2019)

    Article  Google Scholar 

  20. Rajan, D., Matt, V.: Quantum blockchain using entanglement in time. 1(1), 3–11 (2018)

  21. Megidish, et al.: Quantum tomography of inductively-created large multiphoton states. (2017). arXiv:1712.03633

  22. Megidish, et al.: Entanglement swapping between photons that have never coexisted. Phys. Rev. Lett. 110(21), 210403 (2013)

    Article  ADS  Google Scholar 

  23. ConsenSys.: Get to Know the ConsenSys Mesh. ConsenSys Media, ConsenSys Media (2018).

  24. Blockchain for Government: Smart Dubai. Blockchain for Government: Smart Dubai,

  25. ConsenSys Releases Whitepaper At Dubai’s World Government Summit. (2017).

  26. The Civil White Paper. Civil,

  27. A Free Legal Repository. OpenLaw.

  28. Oved, M., Don, M.: Swap: A Peer-to-Peer Protocol for Trading Ethereum Tokens. Whitepaper Database (2017).

  29. Verified Organic and ConsenSys-Backed Treum Launch Ethereum Blockchain Solution to Track and Trace the First Commercial Hemp Crop Planted in Arizona. IT Supply Chain (2019).

  30. Vujicic, D., et al.: Blockchain Technology, bitcoin, and ethereum: A brief overview. In: 2018 17th International Symposium INFOTEH-JAHORINA (INFOTEH) (2018).

  31. Goh, B., Alun, J.: China Wants to Ban Bitcoin Mining. Reuters, Thomson Reuters (2019).

  32. Schaus, P.: Blockchain Projects Will Pay Off—10 Years from Now. American Banker (2016).

  33. Macheel, T.: Banks Will Start Actually Using Blockchain Next Year: IBM Report. American Banker (2016).

  34. NXM Labs Acclaimed by Frost & Sullivan for Its Revolutionary Autonomous Security Platform for IoT. J. Eng. p. 573 (2019)

  35. Matier, J., Pete, W.: Quantum Resistant Ledger (QRL). QRL Whitepaper (2016).\_whitepaper.pdf

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Edwards, M., Mashatan, A. & Ghose, S. A review of quantum and hybrid quantum/classical blockchain protocols. Quantum Inf Process 19, 184 (2020).

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