Revolut, which has round 25 million clients worldwide, the overwhelming majority of whom are within the U.Ok. and the European Financial Space (EEA), is rolling out the service this week, AltFi stated. At first, the London-based fintech will assist staking of the tokens of Polkadot (DOT), Tezos (XTZ), Cardano (ADA) and Ethereum (ETH). Yields on the property vary from 2.99% as much as 11.65%, although these are variable.