# Uniswap Labs launches Unichain, DeFi ecosystem ushers in new breakthroughs

On October 9, Uniswap Labs launched Unichain, a Layer 2 solution built on the Optimism Superchain that aims to address key challenges in the DeFi field, such as high cost, low speed, and decentralized liquidity. Unichain reduces transaction fees by 95% and achieves near-instant transaction speeds with one-second block times and 250 millisecond subblocks.

Unichain's native interoperability enables cross-chain transactions with other superchain L2s, and interoperability with chains outside the superchain ecosystem through the ERC-7683 standard API. In addition, the Unichain Verification Network (UVN) allows UNI stakers to earn part of the sorting fees, further enhancing the decentralization and security of the network.

The launch of Unichain not only provides new application scenarios for DeFi developers, but also brings direct benefits to UNI token holders. Currently, Unichain is online on the testnet, and the mainnet is expected to be deployed later this year.