XPAY KNOWLEDGE
Industry WIKI
Digital assets and currencies
Understand assets, networks and trading mechanics with sources you can check.
Trading basics
Symbols of the United States Department of the Treasury
Symbols of the United States Department of the Treasury include the Flag of the Treasury Department and the U.S. Treasury Seal. The original seal predates the department, having originated with the Board of Treasury during the period of the Articles of Confederation. The seal is used on all U.S. paper currency, and—like other departmental seals—on official Treasury documents.
Trading basicsUnited States Customs Service
The United States Customs Service was a federal law enforcement agency of the U.S. federal government. Established on July 31, 1789, it collected import tariffs, performed other selected border security duties, as well as conducted criminal investigations.