@techreport{ladd-privacypass-bbs-01,
    number =    {draft-ladd-privacypass-bbs-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ladd-privacypass-bbs/01/},
    author =    {Watson Ladd},
    title =     {{BBS for PrivacyPass}},
    pagetotal = 11,
    year =      2024,
    month =     feb,
    day =       26,
    abstract =  {Existing token types in privacy pass conflate attribution with rate limiting. This document describes a token type where the issuer attests to a set of properties of the client, which the client can then selectively prove to the origin. Repeated showings of the same credential are unlinkable, unlike other token types in privacy pass.},
}