Privacy-Preserving Post-Quantum Credentials for Digital Payments Staff Working Paper 2023-33 Raza Ali Kazmi, Duc-Phong Le, Cyrus Minwalla Digital payments and decentralized systems enable the creation of new financial products and services for users. One core challenge in digital payments is the need to protect users from fraud and abuse while retaining privacy in individual transactions. We propose a pseudonymous credential scheme for use in payment systems to tackle this problem. Content Type(s): Staff research, Staff working papers Topic(s): Central bank research, Digital currencies and fintech, Payment clearing and settlement systems JEL Code(s): E, E4, E42, G, G2, G21, O, O3, O31
Reviewing Canada’s Monetary Policy Implementation System: Does the Evolving Environment Support Maintaining a Floor System? Staff Discussion Paper 2023-10 Toni Gravelle, Ron Morrow, Jonathan Witmer At the onset of the pandemic, the Bank of Canada transitioned its framework for monetary policy implementation from a corridor system to a floor system, which it has since decided to maintain. We provide a comprehensive analysis of both frameworks and assess their relative merits based on five key criteria that define a sound framework. Content Type(s): Staff research, Staff discussion papers Topic(s): Market structure and pricing, Monetary policy implementation, Payment clearing and settlement systems JEL Code(s): D, D4, D47, E, E4, E42, E5, E58
How Banks Create Gridlock to Save Liquidity in Canada's Large Value Payment System Staff Working Paper 2023-26 Rodney J. Garratt, Zhentong Lu, Phoebe Tian We show how participants in Canada’s new high-value payment system save liquidity by exploiting the new gridlock resolution arrangement. The findings have important implications for the design of these systems and shed light on financial institutions’ liquidity preference. Content Type(s): Staff research, Staff working papers Topic(s): Financial institutions, Payment clearing and settlement systems JEL Code(s): E, E4, E42, E5, E58, G, G2, G21
From LVTS to Lynx: Quantitative Assessment of Payment System Transition Staff Working Paper 2023-24 Ajit Desai, Zhentong Lu, Hiru Rodrigo, Jacob Sharples, Phoebe Tian, Nellie Zhang We quantitatively assess the changes in participants’ payment behaviour from modernizing Canada's high-value payments system to Lynx. Our analysis suggests that Lynx's liquidity-saving mechanism encourages liquidity pooling and early payments submission, resulting in improved efficiency for participants but with slightly increased payment delays. Content Type(s): Staff research, Staff working papers Topic(s): Financial institutions, Financial services, Financial system regulation and policies, Payment clearing and settlement systems JEL Code(s): C, C1, C10, E, E4, E42, G, G2, G28
A central bank digital currency for offline payments Staff Analytical Note 2023-2 Cyrus Minwalla, John Miedema, Sebastian Hernandez, Alexandra Sutton-Lalani Offline functionality is a key consideration for a potential CBDC. We describe the different types of offline functionality based on their duration outside of network connection—either intermittent (for short periods) or extended (for longer periods). We discuss the advantages and drawbacks of each and consider implications for end-user devices, system resilience and universal accessibility. Content Type(s): Staff research, Staff analytical notes Topic(s): Central bank research, Digital currencies and fintech JEL Code(s): E, E4, E42, E5, E51, E58, O, O3, O31
Simulating Intraday Transactions in the Canadian Retail Batch System Staff Working Paper 2023-1 Nellie Zhang This paper proposes a unique approach to simulate intraday transactions in the Canadian retail payments batch system when such transactions are unobtainable. The simulation procedure has potential for helping with data-deficient problems where only high-level aggregate information is available. Content Type(s): Staff research, Staff working papers Topic(s): Financial markets, Payment clearing and settlement systems JEL Code(s): C, C6, C63, E, E4, E42, E5, E58
Improving the Efficiency of Payments Systems Using Quantum Computing Staff Working Paper 2022-53 Christopher McMahon, Donald McGillivray, Ajit Desai, Francisco Rivadeneyra, Jean-Paul Lam, Thomas Lo, Danica Marsden, Vladimir Skavysh We develop an algorithm and run it on a hybrid quantum annealing solver to find an ordering of payments that reduces the amount of system liquidity necessary without substantially increasing payment delays. Content Type(s): Staff research, Staff working papers Topic(s): Digital currencies and fintech, Financial institutions, Financial services, Financial system regulation and policies, Payment clearing and settlement systems JEL Code(s): C, C6, C61, C63, D, D8, D83, E, E4, E42, E5, E58
Regulatory Requirements of Banks and Arbitrage in the Post-Crisis Federal Funds Market Staff Working Paper 2022-48 Rodney J. Garratt, Sofia Priazhkina This paper explains the nature of interest rates in the U.S. federal funds market after the 2007-09 financial crisis. We build a model of the over-the-counter lending market that incorporates new aspects of the financial system: abundance of liquidity, different regulatory standards for banks, and arbitrage opportunities created by limited access to the facility granting interest on excess reserves. Content Type(s): Staff research, Staff working papers Topic(s): Central bank research, Economic models, Financial institutions, Financial markets, Financial stability, Financial system regulation and policies, Wholesale funding JEL Code(s): E, E4, E42, E5, E58, G, G2, G28
Stablecoins and Their Risks to Financial Stability Staff Discussion Paper 2022-20 Cameron MacDonald, Laura Zhao What risks could stablecoins pose to the financial system? We argue that the stabilization mechanisms of stablecoins give rise to the risk of confidence runs, which can propagate to broader cryptoasset markets and the traditional financial sector. We also argue that stablecoins can contribute to financial stability risks by facilitating the buildup of leverage and liquidity mismatch in decentralized finance. Such risks cannot be addressed by ensuring the price stability of stablecoins alone. Finally, we explore the potential implications of stablecoins for the current system of bank-intermediated credit and for monetary policy. Content Type(s): Staff research, Staff discussion papers Topic(s): Digital currencies and fintech, Financial institutions, Financial markets, Financial stability, Financial system regulation and policies JEL Code(s): E, E4, E42, E44, E5, E58, G, G2, G23
Archetypes for a retail CBDC Staff Analytical Note 2022-14 Sriram Darbha A variety of technology designs could support retail central bank digital currency (CBDC) systems. We develop five archetypes of CBDC systems, outline their characteristics and discuss their trade-offs. This work serves as a framework to analyze and compare different designs, independent of vendor, platform and implementation. Content Type(s): Staff research, Staff analytical notes Topic(s): Central bank research, Digital currencies and fintech JEL Code(s): E, E4, E42, E5, E51, O, O3