Polygon (MATIC)
Polygon To Launch New Public Testnet For Hermez

Polygon has announced the release of its public zkEVM testnet, which will enable developers to test the development of privacy-enhancing zk-rollups in their respective decentralized applications.
The testnet launch is for Herzez, acquired by Polygon for $250 million last year.
The Race For Ethereum Layer-2 Solutions
Polygon has rolled out its first public testnet for its new Ethereum scaling solution, Hermes, as competition for finding a leading Ethereum Layer-2 solution begins. Polygon had acquired Hermez, an Ethereum Layer-2 scaling solution, for $250 million last year. The scaling solution runs on Ethereum, helping to significantly boost its scalability, enabling it to process significantly more transactions for a significantly lesser fee.
The launch of the public testnet for Hermez marks the first time developers will be able to test the new network. Hermez, part of a scaling solution also known as zkEVMs, which offers benefits around security and applications that most other scaling solutions do not. Zk-rollups promise to significantly enhance the Ethereum blockchain, bunching up a host of transactions and presenting them to the blockchain in a single transaction.