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Cover FinTech Notes
Blockchain Consensus Mechanisms: A Primer for Supervisors
Parma Bains
Technology plays an increasingly important role in financial services. With the pace of technological inno-vation moving ever faster, the role new technology plays in the provision of financial services is becoming increasingly fundamental. New technology can generate efficiencies for firms, lowering costs that can be passed on to end users. It can increase access to financial services and products for consumers, particularly the most vulnerable; however, new technology can also create new risks and unintended consequences that can harm financial stability, consumer protection, and market integrity. This primer is designed for financial supervisors at central banks, regulatory authorities, and government departments. It adds to existing literature by summarizing key aspects of popular consensus mechanisms at a high level, with a specific focus on how such mechanisms may impact the mandates of supervisors and policymakers when deployed in financial services markets. It could also help inform IMF staff on policy development and technical assistance related to crypto assets, stablecoins, and blockchains.
Keywords:
fintech, blockchain, distributed ledger technology, proof-of-stake, proof-of-work, crypto assets, stablecoins, central bank digital currencies, Bitcoin, BigTech; Blockchain consensus mechanism; bitcoin mining; FINTECH note; A. consensus mechanism; B. consensus mechanism; Blockchain and DLT; Virtual currencies; Technological innovation; Global
Cover IMF Working Papers
Quantum Computing and the Financial System: Spooky Action at a Distance?
Mr. Michael Gorbanyov, Majid Malaika, and Tahsin Saadi Sedik
The era of quantum computing is about to begin, with profound implications for the global economy and the financial system. Rapid development of quantum computing brings both benefits and risks. Quantum computers can revolutionize industries and fields that require significant computing power, including modeling financial markets, designing new effective medicines and vaccines, and empowering artificial intelligence, as well as creating a new and secure way of communication (quantum Internet). But they would also crack many of the current encryption algorithms and threaten financial stability by compromising the security of mobile banking, e-commerce, fintech, digital currencies, and Internet information exchange. While the work on quantum-safe encryption is still in progress, financial institutions should take steps now to prepare for the cryptographic transition, by assessing future and retroactive risks from quantum computers, taking an inventory of their cryptographic algorithms (especially public keys), and building cryptographic agility to improve the overall cybersecurity resilience.
Keywords:
quantum computing; quantum-safe encryption; cybersecurity; fintech.; fintech; functioning quantum computer; computing technology; quantum machine; encryption standard; hardware capability; cloud service; Computer science; Migration; Financial sector; Global