On February 22nd, Augustine Carstens, manager of the Bank for International Settlements, gave a speech at the Singapore Financial Technology Festival, describing the digital financial infrastructure that he felt was more suitable for the market needs of senior central bank officials. He says the infrastructure is a "consolidated account book".

Carstens compares the unified ledger of the theory with smartphones, saying they can be seamlessly spliced into work with various components. However, unlike smartphones, the unified ledger will have an open architectural design and demonstrate programmability and composability; in other words, it will operate and bind smart contracts. Carstens stressed that smartphone users can apply more than 2 million apps. He said:

"the uniform ledger is a data infrastructure that has the potential to combine the monetary system with other real estate and financial debt marriage registries."

Carstens said that a unified ledger is not necessarily fragmented or powerless, but it can accommodate a variety of "the use of loan money as a means of payment and settlement" projects in which the central bank plays an important role in the governance of the ledger. the unit facing the customer is in the hands of the individual.

Carstens says the central bank's digital money and representative savings can exist as part of the "system partition" of the ledger and use blockchain smart contracts to promote their interaction. Account books can be used as escrow for everything from small payments in Internet of things technology to real estate transactions.

Carstens can take this opportunity to express his current views on stable currencies. Referring to supporters of stable currencies, she said:

"but this view forgets that it is not the application of new technology that supports the currency in circulation, but the whole institutional system and social and international practices behind it."

They also face the risk of being pegged to the dollar, he added. The reason why stable currencies have been discovered is that technically they can do what other ways of lending money cannot do. Central banks should take over these roles from them.

Mr Carstens still made a frank assessment of the success of digital money on February 22nd, causing exasperation in the data-encrypted streets.