zkSync is a ZK rollup, a trustless protocol that uses cryptographic validity proofs to provide scalable and low-cost transactions on Ethereum. In zkSync, computation is performed off-chain and most data is stored off-chain as well. As all transactions are proven on the Ethereum mainchain, users enjoy the same security level as in Ethereum. zkSync has hinted that they will launch their native token in the future. Trying out the mainnet and testnet may make you eligible for an airdrop in the fu...