You can use Cryptocurrency Dynamic Tag to show some useful data with respect to crypto conversions.
By using this Dynamic tag you can convert the cryptocurrency to desired currency and get information such as its Latest price, percent change 1 hour, 24 hours, 7 days, 30 days, Market cap, and Price History.
You can:
Choose to store the retrieved value in cache for some specific time up to 1 hour.
Format Number to include the currency sign.
How To Set API
You can use the API from https://coinmarketcap.com/api/. To access the API you will require an account.
You can set the Coinmarketcap API in Dynamic.ooo > APIs