I am talking about a private permissioned blockchain for land record keeping. --snip--
I agree that this problem can be solved without blockchain by creating a centralized and tamper proof record but the trust factor will still be missing. Whereas if it is on the blockchain we can create a system that is visible and validated by everyone. It is not the record keeping but the collection of the correct record that worries me. Makes it a mammoth task.
There are too many points here. If it is a private permissioned blockchain, that means instead of a single data center, Govt runs its own blockchain nodes to keep the data in sync. It may be visible to everyone but it won't be "validated" by everyone. In case of private blockchains, the central authority can anytime decide on what is valid and what is not. Isn't this just a veneer of change?
Like you said, keeping records tamper-proof is not the issue as much as collection of correct data. This again is an issue too big for blockchain. It's a "ethics in civil authority" kind of issue. With our population and education levels, its hardly possible to put enough checks and safeguards that are accessible to everyone.
Government expenses have already been digitized to an extent. The flow of money from Central/State government accounts to smaller recipients can be easily tracked. The main problem is the flow of money from the smaller accounts to the last mile.
The same can be said for the land records. Also, I didn't mean having "records" of Govt expenses. The ideal, fantastical aim is for the use of cryptocurrency itself for Govt expenses. That makes the expenses open to public scrutiny. Journalists and citizens can look up where the last penny went down to the petty contractors.