What is the use of PNK?

Could you please elaborate on the utility of PNK within the context of its respective ecosystem? Specifically, how does it play a role in incentivizing participation, fostering community engagement, and enhancing the overall functioning of the platform? Additionally, are there any notable use cases or instances where PNK has demonstrated its value in practice? Understanding the practical applications of PNK would greatly assist in assessing its potential and significance within the cryptocurrency and finance landscape.