@techreport{carr-sygil-protocol-00,
    number =    {draft-carr-sygil-protocol-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-carr-sygil-protocol/00/},
    author =    {Evan Carr},
    title =     {{The Sygil Protocol: A Cross-Domain Personal Data Schema and Query Grammar for AI Agents}},
    pagetotal = 122,
    year =      2026,
    month =     jul,
    day =       6,
    abstract =  {This document specifies the Sygil Protocol, an open schema and query grammar for cross-domain personal data designed to make user data interoperable across systems, vendors, and AI agents. The protocol defines a content-addressable record envelope, a reverse-DNS namespace identifier scheme, a deterministic JSON canonicalization rule, an optional vocabulary of proof objects for conveying provenance and other trust evidence on the wire, a minimal query grammar, and three adoption tiers from envelope-shaped data through queryable surfaces to vault-certified runtimes. The protocol is runtime-neutral: it specifies what travels on the wire, not how implementations store, encrypt, authorize, or audit records. This separation lets independent systems produce, consume, and exchange Sygil-shaped data without depending on any specific vault infrastructure.},
}