Mina (MINA)

Not only zk-SNARK ensures the security of the Mina Protocol blockchain. In fact, the network uses the Proof of Stake (PoS) consensus algorithm. This not only makes the blockchain more secure, but also ensures that even less memory and space is needed for the nodes in the network. When you want to perform a transaction over Mina Protocol, you will first need to set up a node. So, this means you can't perform a transaction without a node, which some see as a disadvantage. The advantage is that you don't have to give up much computer power to the blockchain, and you receive a reward for the computer power you give up. There are two different types of nodes that you can run within the network. The first is the block producer, which adds transactions to new blocks, thus expanding the blockchain. This is not the easiest node to run. Snark workers are nodes that are fairly easy to set up. You give some of your computing power to the blockchain's network, allowing cryptographic proofs to be developed. It does not matter which node someone sets up, because in both cases the user is rewarded with MINA tokens. The block producers will receive more tokens, as they also cede more computing power to the network.