Conceived by its founders in 2012 XRP is one of the most ECO-Friendly Cryptocurrencies. XRP is pre-mined, and it uses the Ripple Protocol Consensus Algorithm (RPCA). Simply put, a transaction must be approved by at least 80% of the network’s validators before it can be added to the blockchain. This makes XRP an eco-friendly cryptocurrency. It functions on an efficient and secure network that allows low-fee transactions to occur at great speed.