You should try looking into the origin of Proof of Stake, which Ethereum has been claiming they will switch to eventually. Peercoin originally invented that consensus algorithm and used to be a top 5 project itself back in 2013/2014.
As far as I know, Peercoin is the only Proof of Stake based cryptocurrency that is closely following Bitcoin's core development path, a kind of PoS backup for Bitcoin if you will, but with a different economic model. Ethereum is not really a direct competitor to Bitcoin, as its focus is on being a smart contract platform, which is a different focus than Bitcoin has as digital gold. Peercoin's focus is more similar to Bitcoin, except it has different security and economic models.
You should try looking into the origin of Proof of Stake, which Ethereum has been claiming they will switch to eventually. Peercoin originally invented that consensus algorithm and used to be a top 5 project itself back in 2013/2014.
As far as I know, Peercoin is the only Proof of Stake based cryptocurrency that is closely following Bitcoin's core development path, a kind of PoS backup for Bitcoin if you will, but with a different economic model. Ethereum is not really a direct competitor to Bitcoin, as its focus is on being a smart contract platform, which is a different focus than Bitcoin has as digital gold. Peercoin's focus is more similar to Bitcoin, except it has different security and economic models.