What Did Pirates Use As Currency?

By GovMint :

During the swashbuckling Golden Age of Piracy, pirates often used Spanish coins like Reales and Escudos, which were commonly accepted in trade transactions. The iconic "Piece of Eight," or 8 Reale coin, was a silver currency staple, notable for its weight of about one ounce and circulated heavily in the American colonies.

Pirates also frequently traded in goods that were in demand, such as spices and textiles, allowing them to procure necessities and luxuries alike.

Sources Used:

https://pirates.hegewisch.net/money.html