What cryptocurrencies does Interactive Brokers offer?

Could you please elaborate on the range of cryptocurrencies offered by Interactive Brokers? As a financial practitioner, I'm particularly interested in knowing which digital assets are available for trading on their platform. Does Interactive Brokers support the major cryptocurrencies like Bitcoin and Ethereum, or do they offer a more diverse selection? Furthermore, I'd like to understand if they provide access to emerging and less popular cryptocurrencies as well. Your insights would greatly assist me in evaluating Interactive Brokers as a potential trading partner.