@misc{cryptoeprint:2011:553,
    author = {Mohammad Mahmoody and Tal Moran and Salil Vadhan},
    title = {Non-Interactive Time-Stamping and Proofs of Work in the Random Oracle Model},
    howpublished = {Cryptology ePrint Archive, Report 2011/553},
    year = {2011},
    url = {http://eprint.iacr.org/2011/553},
}