yes, if blockchain is applied in the government, corruption may be minimized significantly because all transactions can be seen by the public
but government must anticipate the anonymous nature. if it is legalized, it means that it is more free to transact using blockchain, and that gives an opportunity for money laundering
in my opinion, prevention of money laundering is not necessary
because the bad effect is far more significant than the good effect, the example of the bad effect is that the economy is difficult to develop due to government supervision.
it is also not in line with a decentralized world
so if the government implements blockchain then maybe at that moment they have realized how bad excessive supervision in the community on economic growth