Semantic Framework for Healthcare Cloud Interoperability (Ξ_healthmesh v2)

This work presents a conceptual, data-free ontology for healthcare interoperability.It defines a semantic and governance structure that enables medical practices, pharmacies, and healthcare organizations to modernize and collaborate without transferring sensitive data.The framework demonstrates how auditability, ethical legitimacy, and decentralization can coexist under EU-compliant principles (EU AI Act Annex IV, ISO 42001, GDPR Art. 89).No real datasets are included – all elements are structural and synthetic, designed for research, education, and system design reference.It serves as a civic and ethical model for future healthcare data ecosystems in Europe. © 2025 Winfried Brückner — ruahAI Systems Buchenweg 5 · 63825 Blankenbach · Germany Email: [e-mail] License: CC BY-ND 4.0 + ruahAI Tier System All rights reserved under German / EU civil law. This work is provided “as is”, without warranty or liability. It contains no personal or sensitive data. Use is permitted for civil, educational, and scientific purposes only, in compliance with EU AI Act Annex IV and GDPR Article 89. AI-assisted formulation by ChatGPT (GPT-5, OpenAI) under the direction and authorship of Winfried Brückner (ruahAI).