https://www.reuters.com/article/us-crypto-currencies-explainer/explainer-stablecoins-in-the-spotlight-as-facebook-unveils-libra-cryptocurrency-idUSKCN1TJ1T6

The original cryptocurrency accounts for over half of the $285 billion global coin trading market. But that dominance is under threat, with a host of alternative digital coins emerging as developers race to build cryptocurrencies able to enter mainstream commerce and finance.