Coins issued by the central bank in my opinion are stable coins because it may be gradually to replace banknotes in circulation in the community. Besides being easier to trace, transactions using crypto will be more transparent and in my opinion this is good for monetary policy
It is evident that Central Bank do really makes their step now to follow the trend of digital currencies and to think about the fiats that they are transitioning to digital currencies, I highly see that the currency they could create will not be a crypto based on blockchain, since whenever that happens, if fiat currencies will be aligned to crypto, conversion of money will be easier and the fiats will just be a tool to mediate people buying cryptocurrency. In which I find good
It is possible that crypto made by the central bank will use blockchain technology but what needs to be considered is the total supply. For central banks, it is difficult to determine the total supply of coins made because this depends on the size of the economy they have