The tokenization of real assets (RWA) is no longer a laboratory experiment: it is a global undertaking that, quietly, is rewriting the way we own a building, a government bond, or a corporate debt. The idea is simple: to represent an economic right (rent, coupon, dividend) by a token registered on a blockchain, exchangeable at any time and, above all, programmable. But behind the apparent simplicity hides a legal, technical and financial mechanism that is refined month after month.