The Achilles' heel of real estate tokenization has never been technology; it is the invalid hash not recognized by the court, and $SIGN has filled in the sovereignty legitimacy gap.

My friend is recently working on a real estate tokenization project in Dubai, a building from Saudi Arabia, wanting to sell it to global investors. He chatted with me and said the most headache-inducing issue is not the technology, but the 'legal validity.'
"I can use cross-chain protocols to transfer the data, but the court does not recognize it. They ask: Can this hash prove that this building is mine? Can it prove that the local government recognizes it? I was speechless."
His words made me think for several days.
We have been discussing on-chain assets, RWA, and tokenization, but overlooked a fundamental issue: on-chain assets, if there is no verification standard backed by sovereignty, are just rootless digits.