Uniswap is a family of automated market maker (AMM) smart contracts for swapping tokens on Ethereum and other EVM networks, and UNI is the ERC-20 token used to govern it. This article explains how the protocol versions differ, what changed when governance switched protocol fees on, and what UNI does and does not entitle a holder to.
What Is Uniswap?
Uniswap is a set of onchain contracts that hold token reserves in pools and price swaps against a formula rather than an order book. First deployed on Ethereum in 2018, later versions run on many EVM networks and on Unichain. Four things carry the name and must be kept apart: the Uniswap protocol, meaning the deployed contracts; Uniswap Labs, the company that wrote every version and runs the web app, wallet and API; the Uniswap Foundation, a nonprofit created in 2022 to fund the ecosystem; and DUNI, the Wyoming decentralized unincorporated nonprofit association, or DUNA, that governance adopted as its legal wrapper.
That division of labour narrowed in late 2025. Under the UNIfication proposal of November 10, 2025, most Foundation employees were to move to Labs, with a small team staying for grants and incentives; the Foundation's own post says it will deploy its remaining grants budget consistent with its mission and then close operations. Labs took on ecosystem support, governance support and developer relations under a services agreement with DUNI. Decisions are still made by UNI holders and delegates voting onchain.
What Problem Do Automated Market Makers Try to Solve?
Before AMMs, trading a token onchain meant an order book: somebody had to post bids and offers, cancel them when the market moved, and pay gas each time. On a blockchain that is slow and expensive, so books were thin, quotes stale, and tokens outside a short list had nowhere to trade. Listing was also decided by whoever ran the venue.
Uniswap's proposition, in the project's own framing, is that a pool replaces the market maker. Anyone can deposit two assets, anyone can swap against them, and the price moves along a formula as reserves change; because pool creation is permissionless, a listing is not something anyone grants. That is the project's claim, not a verified outcome. It does not remove trading costs so much as move them: liquidity providers take on inventory risk and are traded against when prices move elsewhere, as the risk section explains.
How Uniswap Works: v2, v3, v4 Hooks, UniswapX and Unichain
Uniswap v2 pairs two tokens in a constant-product pool. Its fee levels are hardcoded, and governance must enable or disable protocol fees across all v2 pools at once: with fees off the LP fee is 0.3%, and once activated the LP fee is 0.25% and the protocol fee is 0.05%. Uniswap v3 introduced concentrated liquidity, where a provider picks a price range instead of supplying the whole curve, with fixed fee tiers on mainnet and a protocol fee governance adjusts pool by pool. The proposal set protocol fees for 0.01% and 0.05% pools at one quarter of LP fees, and for 0.30% and 1% pools at one sixth.
Uniswap v4 holds every pool inside a single contract and adds hooks: separate contracts that run at defined points in a pool's lifecycle, so developers can attach custom logic without changing the core. UniswapX is a separate order flow system in which a user signs an order offchain and third-party fillers compete to fill it. Unichain is the Labs-built Layer 2 where the protocol is also deployed, and the proposal directs its sequencer fees, after L1 data costs and the 15% share to Optimism, into the same burn mechanism.
Protocol fees have their own plumbing. Each fee source routes through an adapter contract into TokenJar, an immutable collector deployed once per chain, and Releaser contracts define how anything leaves it. The Firepit Releaser burns UNI in exchange for the collected assets, and the proposal states the rule plainly: "Fees can only be withdrawn from TokenJar if UNI is burned in another smart contract called Firepit." The same text says what already existed: TokenJar, Firepit and adapters for v2, v3 and Unichain, while the Protocol Fee Discount Auction (PFDA), v4, aggregator hooks and bridge adapters for L2 and other L1 fees were described as in progress, to arrive through future governance proposals.
What UNI Does in the System
UNI is a governance token. One billion UNI were minted at genesis in September 2020 on a four-year allocation schedule, after which a perpetual 2% annual inflation rate applies; initial parameters included a 4% quorum, a seven-day vote and a two-day timelock before execution. Uniswap's own governance technical reference gives the Ethereum mainnet contract address as 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984. Deployments on other networks are separate contracts with different addresses, so a network always has to be named alongside an address.
The fee switch is what older explanations get wrong. Governance proposal 93, UNIfication, is recorded on the governance portal with 125,342,017 UNI for and 742 against, against a quorum of 40,000,000, and is marked executed on December 28, 2025. Its specification lists eight calls, among them a transfer of 100,000,000 UNI from the treasury to a burn address, a change of the v2 factory fee recipient to TokenJar, and handover of the mainnet v3 factory owner to the fee controller. Writing today that Uniswap's fee switch has not been turned on is no longer accurate.
What the mechanism does needs stating precisely. Collected fees sit in TokenJar and are released only when UNI is burned in Firepit, so the design destroys tokens rather than paying anything out. Holding UNI creates no claim on protocol fees, no dividend, no distribution and no share of revenue. Separately, the proposal created an annual growth budget of 20 million UNI distributed quarterly through a vesting contract from January 1, 2026; the executed calls approved 40,000,000 UNI into it, with tokens staying in the treasury until vested.
Uniswap Ecosystem and Current Adoption
Most published figures here are the project's own. In the November 10, 2025 proposal, Uniswap Labs and the Foundation stated that the protocol had processed roughly $4 trillion in cumulative volume, and that Unichain, then nine months old, was processing around $100 billion in annualized DEX volume and around $7.5 million in annualized sequencer fees. The Foundation's post of the same date reported over $40 million committed in grants and more than 20,000 hook initializations since v4 launched. All are self-reported and should be re-checked.
Deployment news through 2026 comes from the official blog: Uniswap v2, v3, v4 and UniswapX went live on Robinhood Chain on July 2, 2026, the DualPool hook on July 22, and the Permissioned Pools hook standard on July 23. On the fee side, Crypto Briefing reported on July 30, 2026 that a single day saw roughly 106,000 UNI burned, that cumulative burns had passed 107 million UNI according to Dune dashboards, and that governance had extended fee collection to chains including BNB Chain, Polygon, Celo and Robinhood Chain by mid-2026. That is a third-party count, not an audited disclosure.
How Uniswap Differs From Other Onchain Exchanges
The first difference is against order books. An order book prices from resting quotes that somebody has to maintain, while an AMM pool prices from its own reserves through a formula, so a quote always exists and a provider need not stay online. The trade-off is built in: the pool cannot decline a trade, so it sells into demand and buys into supply regardless.
The second difference sits inside the AMM family. v2 spreads liquidity uniformly along the curve, v3 lets a provider concentrate it into a chosen range, and v4 collapses every pool into one contract, so a pool becomes a configuration plus an optional hook; third parties can therefore add logic without forking the protocol. A third difference is where fee revenue goes: into a collector that releases only against a token burn, rather than into a treasury or a staking module. These are design differences, not a ranking.
Risks and Limits
The provider-side risks are structural. A pool prices from a formula, so when the external market moves, arbitrage takes the difference out of liquidity providers; a concentrated v3 position stops earning fees once price leaves its range; and activating protocol fees cuts the LP share of the v2 swap fee from 0.3% to 0.25%. Contract risk is broader in v4, because a hook is third-party code running inside the pool's lifecycle, so a v4 pool is only as trustworthy as its hook. Permissionless creation also means anyone can open a pool for any token, including an imitation.
Execution risk is written into the proposal itself. PFDA, aggregator hooks, v4 fee collection and the bridge adapters for fees on L2s and other L1s were listed as in progress and dependent on future governance votes, so none should be read as shipped merely because the proposal describes them. Burn volume is a function of trading activity and falls when activity falls; the mechanism guarantees nothing about how much is burned in any period.
Governance and structural questions remain open. Voting power is concentrated in a small number of delegates, and after UNIfication one company holds protocol development, ecosystem funding and the main interfaces, while the Foundation is set to wind down once its remaining grants budget is deployed. Several outside commentators and competing teams publicly called UNIfication a strategic mistake and questioned the 20 million UNI annual budget; that is third-party opinion, not an established finding. How a Wyoming DUNA is treated by regulators and tax authorities is also unsettled, and this article does not answer it.
How to Verify Uniswap and UNI
Start from the official domains rather than a search result or an advertisement, and let each document point to the next: protocol documentation for how a version works, fee documentation for TokenJar, Releasers and Firepit, and the governance technical reference for addresses. Take the UNI contract address from that reference, paste it into a block explorer, and check that name, symbol, deployment date and verified source code all match; then confirm the network, because UNI on another chain is a different contract. The governance portal also shows the vote totals and links the executed transaction, which can be read call by call.
For supply and burn figures, read the burn address and the fee contracts onchain instead of trusting an aggregator, and treat every dashboard number, including those quoted above, as a snapshot with a date. Audit reports should be findable on the auditing firm's own site, not only as a PDF hosted by the project. For phishing, compare the domain character by character against the one linked from the official documentation, be wary of paid search placements, and stop at any page asking you to connect a wallet to claim something. If a document, an address and an explorer record disagree, resolve the difference first.
Conclusion
Uniswap is an AMM protocol whose contracts price swaps from pooled reserves, spread across v2, v3 and v4 with hooks, plus UniswapX and Unichain. UNI is the governance token, and since the UNIfication vote executed in December 2025 the protocol fee switch is on, with collected fees releasable only against a UNI burn in Firepit, a supply-reduction mechanism rather than a payment to holders. Several announced pieces, PFDA and aggregator hooks among them, still depend on future votes. Before relying on anything here, check the contract address in Uniswap's own documentation, read the executed governance transaction in a block explorer, and confirm which parts of the fee system are live on which chain.
Related market pages
Bitbase pages for the tokens named in this article:
- UNI: View price · Spot market · Perpetual market
Related reading
Other Bitbase articles on this topic:
- What Is Pendle? Yield Tokenization, PT and YT Explained
- CEX vs DEX: Centralized vs Decentralized Exchanges
Disclaimer: This article is educational content from Bitbase Academy, provided for information only. It explains what a project does and what role its token plays in that system; it does not constitute investment, trading, tax, or financial advice, and it is neither a recommendation nor an endorsement of any project or token. Bitbase has not carried out due diligence on the project described here, and mentioning it does not mean Bitbase lists or supports the asset. Crypto assets carry significant risk, including price volatility, thin liquidity, smart-contract failure, regulatory uncertainty, and the possible loss of their entire value. Written as of August 2026; a project's status, tokenomics, team, and contracts can change at any time. Verify everything yourself through official channels, the contract address, and a block explorer, and beware of imitation sites and phishing links.
References
[1] UNIfication, the joint Uniswap Labs and Uniswap Foundation governance proposal (official blog, November 10, 2025) blog.uniswap.org
[2] Uniswap governance proposal 93, UNIfication: vote totals, proposal spec and executed transaction (Uniswap governance portal) vote.uniswapfoundation.org
[3] UNIfication: Uniswap's Next Era (Uniswap Foundation official blog, on the Foundation's own wind-down and grants budget) uniswapfoundation.org
[4] Uniswap Protocol Fees overview: fee adapters, TokenJar, Releasers and the Firepit Releaser (official documentation) docs.uniswap.org
[5] Governance Technical Reference: UNI token contract address on Ethereum mainnet (official developer documentation) developers.uniswap.org
[6] Introducing UNI: genesis supply, four-year allocation, 2% perpetual inflation and initial governance parameters (official blog, September 16, 2020) blog.uniswap.org
[7] Uniswap Labs blog homepage: 2026 releases including Robinhood Chain, DualPool hook and Permissioned Pools blog.uniswap.org
[8] Uniswap posts third highest UNI burn day with 106,000 tokens destroyed (Crypto Briefing, July 30, 2026; third-party count of onchain burns) cryptobriefing.com
[9] ethereum deployments docs.uniswap.org
[10] UNI docs.uniswap.org
