This is correct. Peercoin (PPC) is one of the oldest cryptos ever released and is responsible for inventing proof of stake. It has owned the PPC ticker for almost 6 years now and is listed on coinmarketcap.com as well as multiple other websites and exchanges.

In fact Peercoin made a joke yesterday about PiedPiperCoin on Twitter.

https://twitter.com/PeercoinPPC/status/993534620191854592