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BIS head describes ideal ‘unified ledger’ for central banks and other financial users

peaking in Singapore, Agustín Carstens described a ledger that would accommodate a variety of public and private projects in discrete but connectable parts.

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General manager of the Bank for International Settlements Agustín Carstens spoke at the Singapore FinTech Festival on Feb. 22 and described the digital financial infrastructure he believes would best suit central bankers’ needs. He called that infrastructure a “unified ledger.”

Carstens compared the theoretical unified ledger with a smartphone, saying they both work seamlessly with a variety of components. Unlike a smartphone, a unified ledger would have open architecture, however, and would show programmability and composability, that it, it would run and bundle smart contracts. There are over 2 million apps available to smartphone users, Carstens noted. He said:

A unified ledger would not have to be decentralized or permissionless, Carstens said, but could accommodate a variety of projects that “use of money as a means of payment and settlement” where the central bank plays a large role in the governance of the ledger and the consumer-facing sector is in private hands.

Central bank digital currency and tokenized deposits could exist in “partitioned” sections of the ledger, with smart contracts to facilitate their interaction, Carstens said. The ledger could be used for everything from micropayments on the Internet of Things to escrow in real estate transactions.

Carstens took the opportunity to express his current thinking on stablecoin. He said of stablecoin proponents:

They also run the risk of depegging, he added. Stablecoins were developed because they were technically able to do things other forms of money could not. Central banks should take those roles over from them.

Carstens also raised the hackles of the crypto community Feb. 22 with a blunt assessment of the success of cryptocurrency.