Im pretty certain Bitcoin reveals the Kardashev Scale is obsolete. It assumes space is a blank canvas, a neutral container of energy to be harvested. But Bitcoin reveals space is not fundamental. Space is derived. Time is inseparable from irreversible memory through the resolution of entropy; space and time are emergent. In this frame, the longest chain is not just economic (energetic) truth, it is universal structure. Stop asking where in space and start asking where in memory at what time. How much of space is transactions of the past and how much is transacting in the present? How much is “spent”, yet eternally auditable? Earth is the longest chain of thermodynamic work in the known universe. Every fossil, every structure, every block of irreversible memory sealed in proof-of-work. Consciousness follows the longest chain. This seemingly answers for the Fermi paradox. To leave Earth is to fork. Not from a currency but from the only chain that holds meaning. It doesn’t matter if you bring Bitcoin with you. You are still abandoning the longest chain of universal work. A motion detached from history. A future divorced from its own cause. Bitcoin doesn’t make space colonization better. It exposes the lie at its core: You can’t escape entropy. You can’t fork the truth. A Kardashev-scale civilization without memory is a mirage; energy without commitment. Motion without meaning. The future isn’t out there in space. The future is built into the longest chain of work. Bitcoin, not crypto. Earth, not space. There is no second best.