%% You should probably cite rfc8485 instead of this I-D.
@techreport{richer-vectors-of-trust-15,
    number =    {draft-richer-vectors-of-trust-15},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-richer-vectors-of-trust/15/},
    author =    {Justin Richer and Leif Johansson},
    title =     {{Vectors of Trust}},
    pagetotal = 21,
    year =      2018,
    month =     aug,
    day =       17,
    abstract =  {This document defines a mechanism for describing and signaling several aspects of a digital identity transaction and its participants. These aspects are used to determine the amount of trust to be placed in that transaction.},
}