It doesn't sound much different from the US, but we don't feed the local recordings to a national database (I would like that). As it is each local government can have different systems, not even all of them have digital systems yet, some are still all hard copies. So uniformity at the local levels would also be nice, or at least some minimal standards.
We suffer from the same problem where nothing stops errors in the recorded documents. But most of the intentional fraud is as simple as: You own Property A and I file a Quit Claim Deed transferring Property A from You (the lawful owner) to myself. As far as I know all the local levels do require these documents to be notarized, but we too suffer from bribery or just simply corruption where a notary may either be part of the fraud or just helping a friend/family member commit the fraud.
If the transfer required signature by private key it would help curb this type of fraud, but there would need to be additional safeguards and there are many other types of fraud and unintentional errors that exist. A system like Git might actually help with some of the errors as it would highlight changes from a current recording to a past records and even incorporate the official land records of the local governments.
