Cryptocurrencies and decentralised finance: functions and financial stability implications

Matteo Aquilina, Giulio Cornelli, Jon Frost and Leonardo Gambacorta

No 156 in BIS Papers from Bank for International Settlements

Abstract: Cryptocurrencies and decentralised finance (DeFi) aim to replicate many of the economic functions of traditional finance (TradFi), but their distinctive features introduce new financial stability risks. We analyse these features, and examine key developments, such as smart contracts, decentralised exchanges (DEXs), stablecoins and new forms of central bank money. Our findings suggest that while the underlying economic drivers are not different than in TradFi, DeFi poses significant challenges, including new forms of information asymmetries, market inefficiencies and the risk of cryptoisation in emerging markets. We propose tailored regulatory interventions, such as embedding rules within smart contracts and strengthening the oversight of stablecoins, to manage financial stability risks. Finally, we provide a framework for prudential regulation that can mitigate risks while fostering innovation in the rapidly evolving crypto ecosystem.

Date: 2025 Written 2025-04
ISBN: 978-92-9259-851-8
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