The COREnext project is a major European research initiative aiming to lay the foundations for the next generation of mobile networks, including beyond-5G and 6G systems. Bringing together leading telecom companies, semiconductor firms, and research institutions across Europe, the project is focused on designing a trustworthy and energy-efficient computing architecture for future radio access networks. By addressing strategic challenges like security, flexibility, and performance, COREnext contributes to European technological sovereignty and long-term competitiveness in telecommunications.