CDBC is the central bank digital currency. Don't confuse it with electronic money.
The cryptocurrency of the Central Bank must base on a separate operating structure — a decentralized distributed ledger. The Central Bank becomes the new Satoshi Nakamoto, which defines the rules for mining a new and makes an ideological influence, but the money system itself is developing in a decentralized way, as it happens with Bitcoin.
The CBDC launch was discussed by the central banks of England, Sweden, Switzerland, the Marshall Islands, and Ukraine, and Venezuela released its Petro-Coin at the end of 2017.