An open standard for admission ticket validation: ticket format (JSON), QR profile (JWS), deterministic validation algorithm, event log, offline mode, and an extension mechanism.
Sources, issues, and change proposals: github.com/otvs-org/otvs-org-site. Specification text: CC BY 4.0 license. JSON schemas: MIT license. The names “OTVS” and “Open Ticket Validation Standard” identify this standard and are not covered by those licenses; conformance may be claimed only by implementations satisfying §14 of the specification. Details: licenses and legal notices.