I don't think this really makes sense...? A blockchain is awesome for decentralized verification of a shared ledger, but without that, it's no different than a line by line history of writes in a text file.
If a dealer has a local copy of the ledger but isn't really part of the blockchain consensus, it's no different than having a read only history in any other structure.
It doesn't matter what format you store it in, it's more a question of who can rewrite history. If the central authority can do so at will and nobody can disagree with them, it nullifies the benefits of using a blockchain.
The dealer can say "it doesn't match our records", sure, but they can say that no matter if a blockchain or a bunch of CSVs are used. If the DMV then says sorry, our records are the only authoritative ones, please overwrite yours... then we're right back where we started.
I don't think people hate blockchains as a data structure, but as misapplied snake oil that doesn't solve the underlying problems. This doesn't create a real audit trail as much as the illusion of one. A proper audit trail would require the authoritative history to reside elsewhere, in some independent third party that the DMV cannot unilaterally overwrite.
If a dealer has a local copy of the ledger but isn't really part of the blockchain consensus, it's no different than having a read only history in any other structure.
It doesn't matter what format you store it in, it's more a question of who can rewrite history. If the central authority can do so at will and nobody can disagree with them, it nullifies the benefits of using a blockchain.
The dealer can say "it doesn't match our records", sure, but they can say that no matter if a blockchain or a bunch of CSVs are used. If the DMV then says sorry, our records are the only authoritative ones, please overwrite yours... then we're right back where we started.
I don't think people hate blockchains as a data structure, but as misapplied snake oil that doesn't solve the underlying problems. This doesn't create a real audit trail as much as the illusion of one. A proper audit trail would require the authoritative history to reside elsewhere, in some independent third party that the DMV cannot unilaterally overwrite.