What question did this study set out to answer?

The aim is to summarize and provide context for the Berkeley Transport Protocol (BTP) specifications.

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May 21, 2026Open Access

Berkeley Transport Protocol (BTP): A Post-Quantum Application Substrate with Witness-Anchored Identity

Key Points

The aim is to summarize and provide context for the Berkeley Transport Protocol (BTP) specifications.
Documented the protocol specifications in a normative framework (SPEC.md).
Included a conformance test suite with 29 normative test vectors.
Released a reference implementation passing all test vectors.
The BTP reference implementation successfully passes all 29 MUST-level vectors.
Protocol is currently at pre-1.0 status with operational gates remaining.
Specifications are available under CC-BY 4.0 and implementation under Apache-2.0.

Abstract

This whitepaper accompanies the BTP v0.7.0 reference implementation at https://git.securityops.co/cristiancmoises/btp. The normative protocol specification (SPEC.md and the family of SPEC-*.md addenda) is the load-bearing artefact; this paper summarises and contextualises those specifications. Status of the protocol: pre-1.0. The remaining v1.0 gates are operational, not implementation; see §10 of the paper for the complete list. The conformance test suite is included in v0.7.0 (29 normative test vectors); the reference implementation passes 29/29 MUST-level vectors. The author retains the BTP trademark per TRADEMARK.md in the source repository. The text of this whitepaper is CC-BY 4.0; the reference implementation is Apache-2.0.

Berkeley Transport Protocol (BTP): A Post-Quantum Application Substrate with Witness-Anchored Identity

Key Points

Abstract

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