@misc{cryptoeprint:2014:452,
    author = {Iddo Bentov and Charles Lee and Alex Mizrahi and Meni Rosenfeld},
    title = {Proof of Activity: Extending Bitcoin’s Proof of Work via Proof of Stake},
    howpublished = {Cryptology ePrint Archive, Report 2014/452},
    year = {2014},
    url = {https://eprint.iacr.org/2014/452},
}