The same trading software can run on more than one network. A matching logo leaves each network with its own balances, so two screens that look alike can still be two inventories. Tokens locked on one chain and shown on another are still one claim, counted twice if you add the two screens.
The confusion is ordinary: you add the two ticker screens together and write down a bigger supply, or you sign on one network while watching a chart from another. People treat a copied design as a shared piggy bank, then wonder why the fill moved a different pool.
A deployment is the factory and pool contracts living on one chain. Same protocol means the same design, copied onto another computer, with its own token balances. Layer 2 networks, often shortened to L2s, handle transactions off Ethereum mainnet while still leaning on Ethereum's security, and how Ethereum works is the generic chain picture.
Uniswap is that protocol on many chains, and a deployment is the pool contracts running on that chain. Bridged UNI is still UNI, a representation of the same claim rather than a second genesis supply, and Tally proposal 100 recaps v2 and v3 protocol fees on 11 chains. What Uniswap is is the protocol picture, and a second chain is another place that picture can run, with its own pools.
What a Uniswap deployment actually is
A Uniswap deployment is the factory and pool contracts living on one chain, so same protocol means the same design copied onto another computer, and your Base pools leave your Ethereum pool where it already sits. The chain is the computer those contracts run on.
A factory is the contract that makes pairs, and a pool is one pair's two token balances on that chain. When you swap on Ethereum, you trade against that Ethereum pair, and when you swap on Base, you trade against a Base pair. The screens can look alike, while the inventory stays separate.
How Uniswap works is the pool picture, and a swap still hits pool reserves. On another chain those reserves are a different file, and the constant-product math stays in that sibling.
Everyone who participates in the Ethereum network keeps a copy of the state of this computer (source: ethereum.org, Intro to Ethereum). Uniswap is a program on that computer, and on other computers that speak the same contract language.
Some of those other computers are Layer 2 networks. A Layer 2, or L2, handles transactions off Ethereum mainnet while still leaning on Ethereum's security. ethereum.org calls Layer 2 a collective term for solutions designed to help scale your application by handling transactions off the Ethereum Mainnet (layer 1) while taking advantage of Mainnet's security model (source: ethereum.org, Scaling). Why Ethereum needs L2s is the generic L2 pressure. Unichain is one named L2 in Labs' network table, which is a chain rather than a second Uniswap protocol.
Once the contracts are on a chain, they stay that code. Governance can enable protocol fee mechanics on supported pools within predefined limits (source: Uniswap Docs, How Uniswap Works). A later vote can turn on a knob the contracts already expose. A vote changes parameters on contracts that are already deployed.
Suppose you open two Uniswap screens that both say UNI and both show a pool, with one wallet network on Ethereum and the other on Base. You have found two deployments of the same protocol rather than one Uniswap that spans both, so if you wanted one inventory, you wanted one chain.
Hold on to one thing: copy the design, and leave each chain's balances on that chain. The next split is the UNI ticker on that second chain.
Bridged UNI vs a second token
Bridged UNI is still UNI on that chain's token contract, a representation of the same claim rather than a second genesis token. Your 40 UNI on Ethereum and 40 UNI labeled UNI on Base stay 40 plus a bridged 40. Adding the screens does not mint 80 new coins.
A bridge representation is how many L2s show a token that started on Ethereum, and the common pattern is lock-and-mint. Native tokens lock on one side, after which bridged tokens mint on the other, which means native tokens are locked into the Standard Bridge on one side, after which bridged tokens are minted on the other side (source: Optimism Docs, Using the Standard Bridge). That is a representation of the same claim.
The UNI token is still the Ethereum ERC-20 vote token. Other-chain UNI listings in the docs sit beside that token because fees can be active there, and they stay off a second allocation table. Adding those listings into a new cap double-counts coins that already exist.
Here is a quick scenario. You hold 40 UNI on Ethereum in a signer you control, and your wallet also shows a UNI balance on Base for 40 UNI. You add the two numbers and write 80, which is the error. The Base 40 is a bridged representation if it arrived through a lock, or it is UNI already on Base if someone sent it there. Either way it is a representation of UNI that already exists, and the Ethereum 40 stays one holding.
A wallet can show the same ticker on two networks because many Ethereum Virtual Machine (EVM) wallets reuse an address string, while the token contract is still per chain. Matching UNI as text is matching a label. If you needed Ethereum UNI, you needed the Ethereum network and the Ethereum UNI contract, and if you needed Base UNI, you needed Base.
A paste that looks valid can still credit the wrong chain. The fact to keep is smaller: a second-chain UNI ticker is still UNI, and it is still the same token family.
What matters here is the claim. Bridged UNI tracks the locked coins, and it leaves the genesis supply where it already was. The next split is which chain lists are actually in play at article time.
The 11-chain fee list vs the live catalog
Tally proposal 100 recaps v2 and v3 protocol fees on 11 named chains. That list is the vote's fee recap, separate from the Labs app catalog and separate from every official deployment address page. Eleven is the count in that sentence, so merging those lists into a twelfth fee chain mixes three catalogs.
Protocol fees are a cut of pool fees that governance turned on, which is a different fact from "Uniswap exists here." A chain can host pools while that cut is off, and a Labs product can show a network while the fee recap never named it.
Protocol fees are now live across all v2 and v3 pools on 11 chains: Ethereum, Arbitrum, Base, Celo, OP Mainnet, Soneium, X Layer, Worldchain, Zora, BNB Chain, and Polygon. This onchain vote will specifically activate v4 fees on Ethereum, Arbitrum, Base, BNB Chain, Polygon, Optimism, and Robinhood Chain. The remaining five chains, Celo, Soneium, Worldchain, X Layer, and Zora, will be addressed in a subsequent proposal (source: Tally, Uniswap proposal 100). Count the first sentence: that is eleven names, and Robinhood sits in the v4 subset sentence, rather than in those eleven.
Labs' own network article is a product table: which Uniswap Labs apps can talk to which networks, and which protocol versions those products expose. The Uniswap Protocol is also deployed on networks that may sit outside the Uniswap Labs interfaces (source: Uniswap Labs support, Networks on Uniswap). An app listing can be longer than the fee recap, and a protocol deployment can sit where the app is silent.
Official v3 address pages are a third list: they name factories and routers so integrators can check a hex, and they grow when governance treats a deployment as official. They are an integrator hex list, and they stay separate from Tally 100's eleven.
| List | What it is for | What it leaves out |
|---|---|---|
| Tally 100's 11 names | v2 and v3 protocol fees recapped in that vote | Every Uniswap screen |
| Labs product table | Which Labs apps talk to which networks | The fee recap |
| Official v3 address pages | Canonical factory and router hexes | A bridge how-to |
That table is a description of three catalogs.
You should pick the list that matches your question. If you asked where protocol fees were recapped for v2 and v3, you wanted those 11 names. If you asked whether the Labs web app can switch to a network, you wanted the product table. If you asked whether a factory hex is the official one, you wanted the address pages, and mixing them invents a twelfth name that Tally 100 never wrote.
The idea to carry forward is three catalogs, one protocol. The next split is why a pool on a listed chain still stays a local pool.
Why a Base pool stays a Base pool
A Uniswap pool is two token balances on one chain. A Base pair leaves the Ethereum pair's inventory where it already sits, because those coins sit in a different contract. Same ticker, different reserves, so Base UNI stays inside Base pools.
Ethereum smart contracts are programs that sit at an address on a network, and Uniswap's pairs are that kind of program. How AMMs work is the generic automated market maker (AMM) class. Uniswap is one AMM family, and each deployment still keeps its own file of balances.
Official v3 docs tell integrators to treat factory addresses as per-chain, even when a hex happens to match (source: Uniswap Docs, Uniswap v3 Deployments). Even when a factory hex happens to match, the pools it made still live on that chain's state, so a matching hex is a copied address, with pools that still live on that chain's state.
Uniswap v2 is the constant-product pool with fungible LP shares. That design can exist on more than one chain, and each v2 pair is still its own two reserves. A v2 UNI/ETH pair on Ethereum stays put when a v2 UNI/ETH pair on Base fills.
Follow one size: you want to sell 40 UNI. On Ethereum, a UNI pair quotes against that chain's ETH and stablecoin reserves, and on Base, a UNI pair quotes against Base reserves. If you sign on Base while watching an Ethereum chart, the fill is still the Base pair: the Ethereum pool stayed put, and the Base pool moved.
Ethereum DeFi is the broader onchain market picture. Uniswap on another chain is still Uniswap's AMM, running where that chain's DeFi sits, which is a pool on that chain. A BloFin book is a venue credit, and a second protocol with a new ticker would be a different product.
Both facts can be true at once: Uniswap is one protocol, and a Base pool is still a Base pool. You should read the network picker before you treat a quote as the pair you had in mind.
The next split is fees, because people flatten a live-fee claim into an everywhere claim.
v4 fees on a named subset
Tally proposal 100 turned on v4 protocol fees for a named subset of chains. Five named chains wait on a later vote, and v2 and v3 fees on the 11 are a different recap in the same text.
Uniswap v4 and hooks is the singleton and hook picture. Extra code a pool can run at set points is a hook. That design can be live on a chain while v4 protocol fees on that chain are still off, so a live v4 pool is a pool-logic fact. It is not, by itself, proof the fee cut is on.
The UNI token docs still describe protocol fees as active on v2 and v3, and protocol fees can be collected across Uniswap's products and are currently described there as active on Uniswap v2 and v3 (source: Uniswap Docs, UNI Token). That sentence and the executed v4-subset vote can both sit in public at once. The docs page can lag a vote, and the vote is the onchain switch, so read the vote as the v4-subset switch and the docs line as a page that can trail it.
Fees on a chain are also a collection path. Collectors on each network take UNI in exchange for the fee tokens, then burn that UNI. Holders have governance rights and are represented through DUNI, with value accrual mediated through the burn. Holders have zero individual claim on protocol revenue. A Base collector burns UNI. It does not mint Base UNI as a dividend.
Your check is small: if a dashboard says "v4 fees are live," you should ask which chains that sentence names. If it names Ethereum, Arbitrum, Base, BNB Chain, Polygon, Optimism, and Robinhood Chain, that is the subset from that vote. If it implies Celo, Soneium, Worldchain, X Layer, or Zora already collected v4 protocol fees under that same vote, that is the flatten, because those five were deferred.
A v4 hook on a deferred chain can still run. The hook is pool logic, and the protocol fee is a governance knob. Mixing them is how "v4 is live" becomes "fees are on everywhere."
What matters here is the named subset. The last section is only what to read before you treat a UNI ticker as Ethereum UNI.
What to check before you treat a UNI ticker as Ethereum UNI
Check the network, the token contract on that network, and which list you actually needed, before you treat a UNI ticker as Ethereum UNI. A matching logo skips that check. A BloFin UNI/USDT balance sits on the venue ledger, off any chain id.
You can run four reads without a bridge tutorial.
- The wallet network is the chain you meant, rather than a lookalike L2 you added from a chat paste.
- The UNI balance is the token on that chain, rather than a second ticker that borrowed the name.
- The pool you are about to call is on that same chain, so you are quoting and signing on one network.
- The list you are citing matches the question: fee recap, Labs app, or official factory hex.
BloFin has listed UNI/USDT on spot since January 15, 2024. A UNI/USDT fill is a venue book, separate from a Uniswap deployment and separate from bridged UNI.
Official is a DAO label. After v3's license opened, anyone could deploy the same bytecode and call it Uniswap, and that grants authority solely to the Uniswap DAO to declare which v3 deployments are official (source: Uniswap Governance, Official Uniswap v3 Deployments List). A lookalike factory can still be real code on a real chain, and it joins the official list when governance says so.
Uniswap is a competing decentralized exchange (DEX), and BloFin is a centralized exchange that lists UNI. If you wanted a venue credit, you wanted UNI/USDT. If you wanted a pool, you wanted a deployment on one chain. If you wanted Ethereum UNI as the vote token, you wanted Ethereum. A bridged balance that only looks the same stays on the other chain.
You can skip memorizing every network name, and still carry the split: same protocol, many deployments, bridged UNI still UNI, and 11 as the v2/v3 fee recap in Tally 100's text. That count is a recap of that vote, and later votes can name other chains.
Common questions about Uniswap on other chains
If Labs lists Solana, is Uniswap v3 on Solana?
The Labs product table can list Solana as Uniswap Web App only, with empty v2, v3, and v4 columns, which is an app listing rather than a Uniswap pool factory on Solana. If you wanted a Uniswap v3 pair, you wanted a chain whose v3 column is checked. A Solana swap in that web app is a different product, and it leaves the UNI supply and your Ethereum UNI where they already sit.
If Blast is in the Labs table, why is it missing from Tally 100's 11?
Those are different lists, because Tally 100 named 11 chains for v2 and v3 protocol fees, and Blast sits outside that sentence. Labs can still show Blast in the product table, because a product listing is separate from a fee-recap listing, so leave Blast off Tally 100's eleven. If you needed the fee list, you needed those 11 names.
If a bridge screen says UNI arrived, can I vote with it on Ethereum Bravo?
Governor Bravo on Ethereum reads UNI on Ethereum. A bridged balance on another chain is still UNI as a token, and it stays off that Bravo balance until UNI sits where that Governor can see it. A successful bridge confirmation is a bridge record. Check the chain the Governor is on, then the address it can read, then the live proposal, and treat a Base or Unichain credit as UNI on that chain.
If I add Base in the wallet, does my Ethereum UNI become Base UNI?
Adding a network only labels later transactions, so it leaves Ethereum UNI in place, and it leaves bridged UNI unminted until a lock-and-mint, or until a send that already used that chain. A new Base listing with a zero UNI balance is the expected first screen. You still have to pick that network again on the next send, or the coins leave on Ethereum.
If I close UNI/USDT, does that unwind a Uniswap LP on Base?
Closing a BloFin UNI/USDT balance flattens a venue book credit. It leaves a Base LP token in place, leaves a Uniswap pair untouched, and leaves liquidity you never posted where it already was. An LP position lives in a pool contract on one chain, and a spot balance lives on the venue's ledger. If you wanted the LP closed, you would have to withdraw from that pair yourself, because flattening UNI/USDT is a venue close.
If the Labs app is down, can I still swap on a listed L2 deployment?
The contracts can still swap if that chain already has an official Uniswap deployment and you can reach it some other way. The Labs tab is an interface, and the pair is bytecode on that chain, so downtime on app.uniswap.org leaves Base or Arbitrum pools running. You still need the fee token on that chain, the right token contracts, and a signer set to that network. A dark website leaves the factory in place, while a wrong network is still a send error.
If Uniswap v4 is live on a chain outside the 11, did v2 and v3 shut down there?
Tally 100's 11 names recap v2 and v3 protocol fees. A v4 fee subset can include a chain those 11 skip, and that leaves older factories running. v2 and v3 pools that already exist keep running until someone exits them. A new v4 pair on a later chain is another deployment. Keep the fee recap and the live versions as separate lists.
Researched and written by the BloFin Academy editorial team with AI-assisted drafting. Updated September 2026. Primary sources include Tally proposal 100, the Uniswap UNI token docs, Uniswap v3 deployment docs, Labs' Networks on Uniswap article, the Optimism Standard Bridge docs, ethereum.org scaling and intro pages, How Uniswap Works, the official v3 deployments forum post, and BloFin's public spot instrument endpoint. All facts independently verified against cited documentation current as of September 2026.
This article is educational and general in nature, not financial or investment advice. Cryptocurrencies like UNI carry real risks, including price volatility, smart-contract risk in pools and hooks, bridged-token and wrong-network risk, interface and unofficial-deployment risk, venue risk on an exchange balance, and the chance of losing funds. Nothing here is a recommendation to buy, sell, hold, or participate in any project. Do your own research, and consider speaking with a licensed professional before making financial decisions. BloFin does not provide investment advice.