Sovereign Generative Design System Provenance with Signed Design Tokens and Accessibility-Tree Lineage.

Generated UI components bound to a signed design-token graph, component genealogy, and accessibility-tree.

A method and system for binding every generatively produced user-interface component to a verifiable lineage of design-system rules, compositional structure, and accessibility attestation. At synthesis time the pipeline emits, alongside the rendered interface, three signed artefacts: a design-token graph recording the exact colour, spacing, type, radius, elevation, glass-blur, and motion token values consumed; a component-genealogy DAG under the atomic-design hierarchy; and an accessibility-tree recording WAI-ARIA roles, accessible names, contrast ratios, focus order, and keyboard semantics. The three artefacts plus the rendered output are bound into a single manifest signed under a post-quantum module-lattice signature; a verifier can independently confirm that the interface conforms to a declared design-system version and a declared WCAG 2.2 AA standard without re-rendering. Filed 21 May 2026 as GB2611898.4.