Flashblocks go live on Unichain for sub-second confirmations

Uniswap Labs/Unichain

Unichain activated Flashblocks on August 14, 2025, confirming transactions every 200 milliseconds inside its normal 2-second blocks using Flashbots-designed infrastructure in secure hardware enclaves. Research cited by Uniswap shows liquidity providers earn ~20% better adjusted returns than on Ethereum mainnet, with gas costs often under a cent.

• 200 ms sub-blocks allow near-instant confirmation; LPs earn ~20% higher adjusted returns by reducing stale-price exposure.
• Designed by Uniswap Labs and Flashbots; runs in Trusted Execution Environments (TEEs) with provable ordering and no hidden MEV.
• Gas costs often under 1 cent, enabling frequent rebalancing and precise liquidity positioning for traders and LPs.