Pirate Chain is a delayed Proof of Work blockchain that is both secure and private. Pirate Chain is similar to Bitcoin Chain with the exception of privacy. In Bitcoin Chain, transactions between two parties are recorded in the ledger, with both of the parties are represented with a randomly generated public addresses. Such exposure of public addresses may eventually expose the real identity of the parties as all the transactions can be traced to the same addresses. Pirate Chain circumvents this problem by using ZK-Snarks, which only reveal the information about the transactions while keeping all other transactional information anonymous. 

ARRR is the token used in the Pirate Chain. Its utility is similar to that of bitcoin; used as transaction fees and obtained from mining. There is a maximum of 200 million ARRR token possible to be mined.