Factbox-How U.S. banks are dipping their toes in the crypto water

FILE PHOTO: Representations of cryptocurrencies Bitcoin, Ethereum, DogeCoin, Ripple, Litecoin are placed on PC motherboard in this illustration taken, June 29, 2021. REUTERS/Dado Ruvic

(Reuters) - Last week, a top U.S. banking regulator warned of growing risks as banks start to capitalize on the popularity of cryptocurrencies to offer related services to clients.

Here is how some of the biggest banks operating in the United States have gotten involved in crypto: