Not claiming this is it, just digging upon what you showed/linked.
“Last year we covered how early blockchain startup Propy planned to use the technology to smooth real-world real estate sales by introducing the concept of smart contracts. It went on to actually sell an apartment as an NFT, using the NFT to effectively rubber stamp the legal process.”
Propy, a U.S. real estate platform specialising in blockchain and NFT, delivered the first official property sale using blockchain technology in 2021. While still in its relative infancy, the company is making significant progress, overcoming the legal teething problems and developing a usable system to define how the new era of real estate sales and transfers will operate.