XCIM Protocol status

Draft v0.1 · Phase 0 · Updated 2026-08-06

Available for review

• Foundational trust model and application-first identity model.
• Issuer-hosted, OIDC-backed consent flow.
• Initial cryptographic, transparency, message-presentation and Polygon profiles.
• Normative headers XCIM-Reference and XCIM-Proof.
• Neutral stale-state result XCIM_STATUS_INDETERMINATE.

In development

• Canonical schemas and byte representation.
• Shared valid and adversarial test vectors.
• Append-only and current-state proof algorithms.
• Resolver behavior and security review.

Draft publication dependency

The canonical v0.1 draft is not yet published on this site. Publication depends on closing the remaining normative decisions and attaching reproducible schemas and vectors. Until then, no CTA represents the draft as complete or stable.