Anonymous Credentials: Secret-Free and Quantum-Safe Staff Working Paper 2023-50 Raza Ali Kazmi, Cyrus Minwalla An anonymous credential mechanism is a set of protocols that allows users to obtain credentials from an organization and demonstrate ownership of these credentials without compromising users’ privacy. In this work, we construct the first secret-free and quantum-safe credential mechanism. 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
Understanding DeFi Through the Lens of a Production-Network Model Staff Working Paper 2023-42 Jonathan Chiu, Thorsten Koeppl, Hanna Yu, Shengxing Zhang We develop a production-network model to capture how decentralized finance (DeFi) has evolved across different sectors of financial services. The model allows us to measure the value added by different DeFi sectors and to study how the connections across the sectors influence token prices. Content Type(s): Staff research, Staff working papers Topic(s): Digital currencies and fintech, Payment clearing and settlement systems JEL Code(s): G, G2
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
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
Potential benefits and key risks of fiat-referenced cryptoassets Staff Analytical Note 2022-20 Hugh Ding, Natasha Khan, Bena Lands, Cameron MacDonald, Laura Zhao Cryptoassets that reference a national currency (commonly known as stablecoins) aim to peg their value to the reference currency and typically use a reserve of traditional financial assets to maintain the peg. The market value of these fiat-referenced cryptoassets has grown more than thirtyfold between early 2020 and mid-2022. We explore some of their potential benefits and key risks. Content Type(s): Staff research, Staff analytical notes Topic(s): Digital currencies and fintech, Financial institutions, Financial markets, Financial system regulation and policies, Payment clearing and settlement systems JEL Code(s): E, E4, G, G2, G28, L, O, O3
The Relative Benefits and Risks of Stablecoins as a Means of Payment: A Case Study Perspective Staff Discussion Paper 2022-21 Annetta Ho, Sriram Darbha, Yuliya Gorelkina, Alejandro García Our paper contributes to the discussion about the utility of stablecoins for retail payments through an objective, evidence-based approach that compares stablecoins with traditional retail payment methods. The paper also provides insights that could be useful in the design of central bank digital currencies. Content Type(s): Staff research, Staff discussion papers Topic(s): Digital currencies and fintech, Payment clearing and settlement systems JEL Code(s): D, D7, D78, O, O3, O38