By combining artificial intelligence with distributed ledger technologies, the project introduces a secure and transparent framework for autonomous service discovery, negotiation, and resource trading. It empowers end users and devices with self-sovereign identity, privacy-preserving mechanisms, and full control over connectivity and data. Through its modular end-to-end architecture, SOVEREIGN advances scalable, trustworthy, and cost-efficient B5G ecosystems, supporting next-generation applications such as digital twins and the Internet of Senses.