One of the earliest digital coins, Peercoin (PPC) was released in 2012. It was the first to bring the “Proof-of-Stake” concept to life. Peercoin is a peer-to-peer cryptocurrency and is minable. PPC is widely represented on exchanges. You can also buy this coin for fiat currency.
Ubiq (UBQ) is the mineable coin supported by the number of exchanges. Running the “Ethereum Virtual machine”, Ubiq provides developers with the tools to create smart contracts.
