XPAY KNOWLEDGE
Industry WIKI
Digital assets and currencies
Understand assets, networks and trading mechanics with sources you can check.
Fiat currencies
Currency substitution
Currency substitution, also known as dollarization, is the use of a foreign currency in parallel to or instead of a domestic currency.
Fiat currenciesUnited States dollar
The United States dollar (symbol: $; currency code: USD) is the official currency of the United States (U.S.) and several other countries. The U.S. Coinage Act of 1792 established the dollar as the base unit, with each dollar divided into 100 cents (symbol: ¢). U.S. banknotes are issued in the form of Federal Reserve Notes, popularly called greenbacks due to their predominantly green col