Woofun AI reports that Uniswap Labs has released a proposal to activate protocol fees within the v4 pool architecture. The initiative introduces a V4 Fee Controller system comprising two core contracts: V4FeePolicy, which calculates fees based on governance rules, and V4FeeAdapter, which executes overrides and collects fees into TokenJar. Fee calculation follows a hierarchical structure, prioritizing specific trading pair rates, then family defaults, and finally global defaults.

The proposal targets three pool families across 11 chains, including Ethereum, Arbitrum, Base, and BNB Chain: static rate pools without Hooks, CCA pools post-continuous liquidation auctions, and aggregator Hook pools. Aggregator Hook pool rates utilize a 25x multiplier, with defaults of 10 bp (3 bp for stablecoins) on non-Base chains and 3 bp (1 bp for stablecoins) on Base chains. All collected fees flow into each chain's TokenJar, while UNI burned on L2 and Alt-L1 networks will be bridged to Ethereum mainnet and sent to the 0xdead address. Snapshot voting runs from July 7 to July 12, with on-chain voting commencing the week of July 13. Due to GovernorBravo's 10-action limit, two parallel on-chain votes will be submitted to cover all chains.