Is Pirate Chain proof of work?

Could you please clarify if Pirate Chain utilizes a proof of work consensus mechanism? I'm curious about the specifics of its blockchain architecture and the methods it employs to ensure security, decentralization, and immutability. Understanding the consensus algorithm is crucial for assessing the network's efficiency, scalability, and resistance to potential attacks. I'm interested in learning whether Pirate Chain follows a similar approach to Bitcoin or if it adopts a unique approach tailored to its specific use case.