Aztec, a privacy protocol developing on Ethereum, has announced the launch of its second iteration, promising private transactions and smart contracts while being cheaper than standard transfers. It has been reported that the layer two solution adopted by Aztec relies on zkRollups, similar to Loopring or ZkSync. However, all these protocols rely on zero-knowledge proofs to help the Ethereum scale but come with different benefits and focused use-cases. According to the report,