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Mu Changchun: Systematically Enhance Currency Bridge Technology from Three Aspects

ChainCatcher News, Mu Changchun, director of the Digital Currency Research Institute of the People's Bank of China, stated at the Sibos 2024 conference on October 23, titled "Multilateral Central Bank Digital Currency Bridge: Connecting Global Economies with Central Bank Digital Currencies," that the Digital Currency Research Institute will systematically enhance the currency bridge technology in three aspects:Privacy protection mechanism. In the future, privacy protection technology based on zero-knowledge proofs will be developed, with plans to launch in 2025. The design of zero-knowledge proofs can demonstrate the compliance of both parties in a transaction and the sufficiency of funds without disclosing details such as account balances or transaction timestamps.System development and operation maintenance system. The currency bridge system will be deployed in a decentralized manner, with each party independently maintaining operations.Openness and transparency of the currency bridge platform. To strengthen trust among participants, the source code of the currency bridge is currently fully transparent to all participating central banks. Next, the Digital Currency Research Institute plans to promote joint development, code delivery, code review, continuous integration, continuous delivery, and continuous deployment using the development and operation maintenance system. At the same time, the Digital Currency Research Institute will collaborate with the Bank for International Settlements to hire service providers for third-party code reviews and open-source assessment preparations to achieve full open-source status.

Mu Changchun: We need to achieve the use of digital renminbi as a payment tool in all retail scenarios

ChainCatcher news, according to a report by The Paper, Mu Changchun, director of the Digital Currency Research Institute of the People's Bank of China, stated at the main forum of the "2023 China International Financial Annual Forum" during the 2023 China International Service Trade Fair on financial services that after completing the upgrade of currency, the payment tools for the entire society will also need to be upgraded to the new currency accordingly.The first to achieve the upgrade will be the payment tools used in retail scenarios, specifically using digital RMB as the payment tool in all retail scenarios. Wallet providers such as WeChat, Alipay, the commercial bank's mobile banking app, and other third-party payment institution apps, as well as digital RMB operating institutions, must have compliance awareness, obtain the corresponding financial licenses, and comply with regulations. In the short term, we can first unify the QR code standards from a technical perspective to achieve mutual recognition of barcodes; in the long term, we will steadily realize the upgrade of payment tools.The payment tools used in wholesale payment scenarios also need to be upgraded. Currently, the interbank payment clearing system and the internal systems of commercial banks that support wholesale payments are operating normally and can meet the needs of China's economic development. To avoid wasting existing systems and resources, there is no need to replace them with a central bank digital currency system, but we can achieve seamless connectivity by ensuring that digital RMB is fully interoperable with existing electronic payment tools and commercial bank deposits.Additionally, for financial market infrastructures that were previously uncovered, digital RMB can be used for settlement, and smart contracts can be utilized to achieve delivery versus payment (DVP) and payment versus payment (PVP), thereby improving the efficiency of wholesale payments.
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