Uniswap Labs has asked tokenholders to approve extending the protocol’s fee and burn mechanism to Arc, the Circle-built Layer 1 that launched September 16, a move that would tie the newest venue in decentralized finance to the token’s deflationary design.
The proposal, posted as a temperature check on the Uniswap governance forum, covers fee activation across v2, v3, v4 and UniswapX pools on Arc. Uniswap was live on Arc from the day the chain launched, but protocol fees have not been switched on there yet. A Snapshot vote runs September 18 through 23, with an on-chain vote to follow if the temperature check passes.
Under the mechanism, protocol fees collected on Arc would flow into a TokenJar contract, and searchers claiming those fees would pay in UNI that gets permanently burned. Fees generated on Arc burn canonical UNI on Ethereum mainnet through the same Wormhole releaser path already running on Polygon and BNB Chain. The AMM and governance message-passing contracts are deployed, according to the proposal text, so the technical work is done and what remains is the vote itself.
Why Arc Matters
Arc is not just another chain in the deployment list. Circle built it as a Layer 1 for financial markets, real-time money movement and what the company calls agentic economic activity, and its mainnet went live on September 16. Uniswap deploying all four of its major products on day one signals that the largest decentralized exchange wants to be the default trading venue wherever Circle’s stablecoin infrastructure lands.
Circle’s position gives the chain a different starting point than most new L1s. USDC remains the dominant regulated dollar stablecoin, and Arc is designed around the idea that payments, settlement and now agentic trading happen on the same rails. If that thesis plays out, the pools on Arc could carry fee flow comparable to established venues within months rather than years, which is the bet the fee expansion is making.
For UNI holders, the economics matter more than the branding. The fee-and-burn system went live in December 2025 after the UNIfication governance proposal, which also executed a one-time burn of 100 million UNI from the treasury and redirected Unichain sequencer revenue into the same mechanism. Since then, protocol fees have been active on v2 and v3 pools across 12 chains, with cumulative burns reaching about 100.17 million UNI, roughly 10 percent of the original 1 billion supply.
| Metric | Value | Source |
|---|---|---|
| Cumulative UNI burned | About 100.17 million, roughly $557 million | Coin Metrics / Uniswap governance docs |
| Peak single-day burn | 186,000 UNI, August 2026 | Uniswap governance proposal |
| Ongoing burn rate | Roughly 4 to 5 million UNI per year | Post-UNIfication observation |
| Circulating supply, July 2026 | 892.9 million UNI | Uniswap governance FAQ |
| Retroactive treasury burn | 100 million UNI at UNIfication | UNIfication proposal |
The Price Context
The proposal lands during UNI’s strongest month in nearly a year. The token traded at $9.02 on September 18, up 18 percent in 24 hours, 45 percent on the week and 152 percent over 30 days, its best level since November 2025. Market trackers put UNI up more than 100 percent on the month as of September 21, a rally that has tracked the broader decentralized finance recovery and the fee-switch narrative itself.
That rally gives the vote a different character than it would have had in a flat market. Burning UNI reduces supply mechanically, but the burn rate observed so far, roughly 4 to 5 million UNI a year, amounts to about 0.4 percent of supply annually. Governance delegates have debated whether that is enough to matter, with some arguing the fee switch creates durable demand rather than just supply reduction, and others warning that LP profitability under protocol fees is still unproven on v4. One delegate put the concern plainly in the v4 fee discussion: if liquidity providers exit because their fee income gets compressed, the burn pressure arrives alongside a shrinking protocol, which helps nobody.
UNI holders earn no share of protocol fees. Protocol fees are only used to permanently burn UNI, reducing supply over time. – Uniswap governance FAQ
What Happens Next
The Snapshot window closes September 23. If the temperature check clears, the on-chain vote follows under the expedited process used for fee parameter updates, which skips the standard two-week introduction period. Arc would then join Polygon and BNB Chain as the third external chain where fees collected locally burn UNI on Ethereum mainnet.
The vote also tests something bigger. Uniswap’s governance has been extending the fee system chain by chain since December, and each expansion converts a new pool of trading activity into burn pressure. Arc, backed by the issuer of the second-largest stablecoin, represents the largest new pool of potential fee flow added since the mechanism launched. Earlier expansions to Robinhood Chain and other venues followed the same template, and each one faced the same question about whether the burn numbers justify the governance overhead.
There is also a competitive angle. Uniswap’s fee switch was the headline move of the UNIfication era, but rivals have copied the structure. Ethena put 95 percent of its net revenue into ENA buybacks through its own fee switch, and Hyperliquid returns most of its protocol value to HYPE holders through programmatic buybacks. Token burn and buyback mechanics are now table stakes across the top of decentralized finance, which makes each new chain expansion less of a differentiator and more of a maintenance task. The September 23 Snapshot result will show whether delegates see Arc as maintenance or as a genuine new frontier for the protocol’s economics.