2. I don't even understand how a title transfer could happen without verifying ownership. Is the title system in the USA decentralized or that much different than elsewhere? i.e. Torrens-style
The claim that the title insurance industry is the reason for lack of adoption of Torrens title schemes is uncited, and immediately followed by descriptions of several cases where Torrens title was adopted (often poorly) and later abandoned.
We cannot have such a national registry in the United States. We could have 50 independent ones, but the few states that tried it have given up and reverted.