Nexus: Data sovereignty in the new information age Part 2 Project 2025 Sangay Wangchuk Cardiff University | UK In a world increasingly governed by invisible data infrastructures, algorithmic control has displaced democratic oversight. Tech corporations operate as de facto sovereigns by extracting value, shaping lives, and redrawing geopolitical boundaries through digital code. This project begins at that crisis point: the collapse of public agency in the face of infrastructural opacity.Nexus proposes an alternative. It reimagines the corporation as a civic actor, encoded with principles of accountability, equity, and planetary ethics. It is both architecture and institution: a prototype for algorithmic sovereignty where data is not extracted but governed by people, in place.Situated in Cardiff, a post-industrial port city shaped by environmental risk and digital ambition, the project unfolds across three scales. At the territorial level, a linear “Sovereign Strip” integrates tidal energy, data flows, and civic assembly. At the district scale, algorithmic courts, co-operative clouds, and audit plazas decentralise control. At its centre stands the Data Senedd: a landmark of public infrastructure where law, computation, and architecture co- produce trust.Nexus transforms the corporate headquarters into a constitutional machine. It asserts that architecture can operationalise democratic code where every wall is legible, every system negotiable, and every citizen a sovereign node in the network. Tutor(s)