Cosmologically Unique IDs
Summary
This article is a deep dive into globally unique ID design, weighing random (UUID-like) approaches against deterministic schemes such as central counters, Dewey, Binary, and token-based methods. It presents mathematical bounds, growth models, and simulations to compare how ID length scales with user/device growth, including space-scale thought experiments from planets to galaxies. It also touches on practical security considerations like signatures and error correction, and concludes that large random ID spaces remain the most practical solution for near-term universes.