In that case you have the entity operating and maintaining the "digitalized system" which is the third party that everyone has to trust. And that entity won't do its work for free either. And it also will somehow "involve humans" which are working there.
Oh, and please don't suggest to "simply put it on a blockchain". I don't have the time to explain for the millionth' time why that doesn't work with physical properties. I consider that to be common knowledge among HN users after about 10 years of having those discussions regularly.
Also, property ownership can get ridiculously complex really fast. If just one person owns something, that's simple. But in reality, quite often multiple persons own something together (sometimes some of these persons aren't even humans, but legal entities). In that case there are a gazillion different ways in which such shared ownership can be implemented, with far-reaching implications with regard to what will happen if people disagree, split up, modify or sell the property further down the road. You cannot simply model this complexity with an SQL database because it involves legal contracts that specify the details in which a properties' ownership is shared exactly. And the notary is actually responsible in such a case to write these contracts, ensure that every participant knows about their role and rights within these contracts and isn't shortchanged.
Oh, and please don't suggest to "simply put it on a blockchain". I don't have the time to explain for the millionth' time why that doesn't work with physical properties. I consider that to be common knowledge among HN users after about 10 years of having those discussions regularly.
Also, property ownership can get ridiculously complex really fast. If just one person owns something, that's simple. But in reality, quite often multiple persons own something together (sometimes some of these persons aren't even humans, but legal entities). In that case there are a gazillion different ways in which such shared ownership can be implemented, with far-reaching implications with regard to what will happen if people disagree, split up, modify or sell the property further down the road. You cannot simply model this complexity with an SQL database because it involves legal contracts that specify the details in which a properties' ownership is shared exactly. And the notary is actually responsible in such a case to write these contracts, ensure that every participant knows about their role and rights within these contracts and isn't shortchanged.