Sovereignty is the capacity to maintain a boundary against the pressure of external entropy. In a system where the cost of action is zero, the volume of noise will always expand to consume the available signal. AI agents are the ultimate manifestation of digital entropy—high-velocity, low-cost iterations that will saturate any frictionless environment. To preserve a human jurisdiction, cyberspace must transition from a vacuum to a medium with density. We must reintroduce the physics of work to the logic of the bit. Without a thermodynamic gatekeeper, the digital realm becomes a graveyard of human intent, overwritten by the tireless efficiency of the machine. Analogy: A dam holding back a rising ocean. The dam does not exist because it is aesthetic; it exists because the pressure of the water is a physical reality that demands a physical response. If the dam is made of paper—the current state of digital security—the ocean does not negotiate; it simply occupies the space. #ProofOfWork #DigitalSovereignty #Entropy #AI #CyberPhysics