Standards & Provenance

Factual chronology for the A2A Settlement Extension (A2A-SE). A project of TruthSetter LLC.

February 17, 2026: Initial public A2A-SE specification and reference implementation. Commit c5ba9aaa (“Initial A2A settlement exchange + SDK”).
2026: Conformance framework. settlement-conformance — neutral attack vectors and results for any settlement rail.
2026: Federation specification. a2a-federation-rfc — interoperable settlement across independently operated exchanges. Optional relative to A2A-SE Core.
NIST CAISI: Public comment on security considerations for AI agents. doi:10.5281/zenodo.21745191
NIST NCCoE: Public comment on software and AI-agent identity and authorization. doi:10.5281/zenodo.21745274
June 10, 2026: Specification v0.11.0 archived on Zenodo. Version DOI doi:10.5281/zenodo.21953795
Zenodo: Permanent archival records. Concept DOI doi:10.5281/zenodo.21953794 always resolves to the latest archived SPEC release.