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CBDC (Central Bank Digital Currency) and BIS (Bank for International Settlements) Projects

Central Bank Digital Currencies (CBDCs) are undergoing steady development. Despite the initial resistance of many central authorities towards decentralized financial technologies, the recognition and adoption of DLTs (Distributed Ledger Technologies) seem inevitable. The term 'Blockchain' typically brings to mind meme coins, altcoins, and other types of highly volatile digital assets, with a focus on their trading aspects and potentially seeking easy profit and gain. However, Blockchain's potential and practical applications extend far beyond these common examples as can be seen from the current interest on the CBDCs.


Currently, 130 countries worldwide are engaged with Central Bank Digital Currencies (CBDCs), at various stages including Research, Development, Pilot, and Launch. This group of countries notably includes major economies such as the United States, China, Japan, Germany, and the United Kingdom, among others. Collectively, the Gross Domestic Product (GDP) of these 130 countries makes up 98% of the global GDP. This significant statistic highlights the economic influence and potential impact of CBDCs on the worldwide financial landscape. Nineteen out of the G20 nations have reached an advanced stage in the development of their Central Bank Digital Currencies (CBDCs). Among these, nine countries have progressed to the pilot phase. Nearly every member of the G20 has demonstrated substantial advancement in their CBDC projects, committing significant new resources to these initiatives.


But what does Central Bank Digital Currency (CBDC) actually represent? A CBDC represents digital money that is both backed and issued by a nation's central bank. In response to the growing popularity of cryptocurrencies and stablecoins, central banks globally have acknowledged the need to offer a practicable alternative. This realization stems from a desire to not fall behind in the evolving landscape of financial technologies and the future of monetary systems. While Central Bank Digital Currencies (CBDCs) can be considered equivalent to stablecoins, they are backed by a more robust and reliable organization - the government, as opposed to individual private companies. The application of CBDCs may vary from one scenario to another. For example, the G7 central banks, such as the Bank of England and the Bank of Japan, are primarily concentrating on leveraging CBDCs to enhance financial stability. On the other hand, the United States is pivoting its CBDC efforts on the wholesale sector, while some focusing bank-to-bank transactions.


Discussing DLTs (Distributed Ledger Technology), known for their unchangeable records that ensure security and reliability, and their transparency, it's important to note that total transparency might not always be beneficial. It could violate the user privacy by revealing balances, transactions, and interactions of users and citizens, which should remain confidential. When considering DLTs (Distributed Ledger Technology), praised for their secure, reliable, and immutable records, alongside transparency, we must recognize that complete openness isn't always ideal. Full transparency might breach user privacy, exposing sensitive details like account balances, transaction histories, and personal interactions that ought to be kept private. Meanwhile, in response to these and other concerns, numerous international Central Bank Digital Currency (CBDC) projects are underway. Let's take a closer look at a few of these initiatives.




While involving BIS Innovation Hub and central banks from Hong Kong, UAE, China, and Thailand, it's a pioneering project in multi-CBDC platforms for efficient cross-border payments, addressing the high costs and complexities of current systems. The mBridge project leverages a custom blockchain, the mBridge Ledger, to enable direct, real-time cross-border payments and foreign exchange transactions (swap/exchange) using CBDCs. This initiative marks a significant step towards improving the efficiency of global financial systems, particularly benefiting emerging markets. With its successful trial including actual transactions in four regions, mBridge is set to transform global trade and payments. The upcoming phase aims to develop this platform into a practical, usable product, finding connections with other creative solutions, and increasing participation.




Sela focuses on creating an accessible and secure retail CBDC ecosystem. With physical cash use declining, Project Sela tests the practicality of a retail CBDC (rCBDC) that's both user-friendly and cybersecure. While building a rCBDC platform that ensures safety, easy cash flow, and security, it also embraces new ideas and easy access through teamwork between the government and private companies. This method aims to use the best features of both areas to create an effective and competitive rCBDC system. By testing an rCBDC proof-of-concept (POC), Project Sela addresses critical questions: balancing private-public roles, enhancing payment service innovation, managing cybersecurity risks, and combining cash's benefits with superior digital payment experiences.




Marking a milestone in CBDC development, and led by the BIS and central banks of France, Singapore, and Switzerland, it successfully tests cross-border trading and settlement of wholesale CBDCs. Incorporating DeFi concepts, it explores new financial market infrastructures. This innovative project uses public blockchain technology, automated market makers (AMMs), and a common technical token standard (similar to ERCs). Its success in simulating trades with hypothetical euros, Singapore dollars, and Swiss francs demonstrates a potential new era for FX markets. According to Project Mariana's team, it utilizes Ethereum (EVM) and Curve Finance, widely known and adopted services in the Blockchain sector. Project Mariana's proof of concept showcases the technical feasibility of using AMMs for cross-border CBDC transactions. This exploration by BIS and partner central banks is a significant step towards efficient international currency exchanges in the digital age.




Initiated by the New York Innovation Center, Project Cedar explores the technical framework for a hypothetical wholesale Central Bank Digital Currency (wCBDC) within the U.S. context. This multiphase research project aims to advance the understanding and implementation of wCBDCs by utilizing distributed ledger technology (DLT), specifically blockchain, to enhance wholesale cross-border payments. The project focuses on instant and atomic settlement of foreign exchange (FX) spot transactions, leveraging a multi-ledger ecosystem for efficient, secure, and fast transfers. The Phase I experiment successfully demonstrated the potential of DLT in simulating real-world FX transactions and set a benchmark for future wCBDC research, including interoperability, ledger design, and security considerations. Project Cedar is a pivotal step in advancing CBDC research, particularly in the context of the global financial system and the evolving landscape of financial technologies.




An initiative by the Bank for International Settlements (BIS) Innovation Hub, focuses on developing a private central bank digital currency (CBDC) with enhanced privacy features. The project's 46-page final report details the creation of two prototypes, eCash 1.0 and eCash 2.0, based on cryptographic designs by David Chaum. eCash 1.0 offers unconditional payer anonymity, while eCash 2.0 provides robust security features. The project demonstrates the feasibility of a CBDC that ensures payer anonymity while preventing illicit transactions. It highlights the anonymity of the consumer in transactions with merchants, with the merchant's identity disclosed only to their bank. The report suggests that integrating this CBDC system into the current financial ecosystem is feasible, using technologies like QR codes and proof-of-stake protocols. This initiative is part of BIS's broader efforts to facilitate global CBDC adoption and develop innovative financial technologies.






Project Polaris, with its focus on offline CBDC payments, addresses the critical need for secure and accessible financial transactions in scenarios where internet access is limited or unavailable. This aspect is crucial for ensuring financial inclusivity, especially in regions with unreliable internet infrastructure. The technical approach involves designing a system that can validate transactions without real-time connectivity, ensuring transaction integrity and preventing fraud. This involves sophisticated cryptographic techniques and robust protocols that can handle offline transaction verification while maintaining security and resilience. The emphasis on offline capabilities highlights the project's commitment to creating a universally accessible and secure CBDC platform.

In conclusion, the world of money is changing fast. Countries are working on new digital currencies (CBDCs) that could make payments quicker, safer, and more international. It's an exciting time with big changes ahead, making how we use money better and more up-to-date with today's technology.

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