BIS be like
Trading of cryptoassets can take place on both centralised exchanges (CEXs)
and decentralised exchanges (DEXs). The former are structured around the same
principles as their conventional counterparts. CEXs maintain off-chain records of
outstanding orders posted by traders – known as limit order books. By contrast, DEXs
work in substantially different ways, by matching the counterparties in a transaction
through so-called automated market-maker (AMM) protocols. AMMs follow
mathematical formulas to determine prices based on transaction volumes. Box A
discusses how AMMs incentivise liquidity provision; it also looks at their susceptibility
to market manipulation. Both CEXs and DEXs have seen substantial growth since
2020, although the share of DEXs in the overall transaction volume on crypto
exchanges has remained below 10% (Graph 2, left-hand panel).
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