Uniswap (UNI) governance is set to vote on activating protocol fees for selected Uniswap v4 pools for the first time, alongside a separate measure that would extend v2 and v3 fee collection to Robinhood Chain.

Both proposals have been submitted for final onchain votes, which open Sunday and run through July 26. Citing current trading volumes, especially on Robinhood Chain, Uniswap founder Hayden Adams wrote on X Friday that "we expect the impact on UNI burn to be substantial."

The v4 proposal would activate fees for three categories of pools: static-fee pools, pools launched through continuous clearing auctions, and aggregator-hook pools, across Ethereum, Arbitrum, Base, BNB Chain, Polygon, Optimism and Robinhood Chain. A second proposal covering the remaining five chains will follow because Uniswap’s GovernorBravo contract limits proposals to 10 onchain actions, according to the proposal text.

The separate Robinhood Chain proposal, submitted by Adams, would enable v2 and v3 fees on the network, where Uniswap deployed all three protocol versions at the chain's July 1 mainnet launch. Those deployments passed $6 billion in cumulative swap volume as of July 10, per the proposal.

Robinhood Chain, an Ethereum Layer 2 built with Arbitrum's tech stack, pulled about $3.1 billion in DEX volume during its first week, with early trading dominated by memecoins, The Block previously reported.