Don't Sign to Claim UNI. Uniswap's Only Protocol Airdrop Was in 2020.

A YouTube video, X post, or Instagram clip says a Uniswap airdrop is live. It tells you to connect a wallet and tap Sign. The popup may show no network fee, so it can feel like logging in.

Uniswap's help pages describe a different risk. A signature can authorize token movement. That signature can sit unused until someone broadcasts it later. Social posts are a way people find these claim links. They are not proof that any named video or account stole funds.

What Uniswap currently says about UNI

Uniswap's support page on claiming the UNI token airdrop says the drop was held on September 1, 2020, at 12:00 am UTC. Anyone who had used Uniswap before that date is eligible. The page calls this the only Uniswap airdrop affiliated with the Uniswap Protocol.

The same page says official airdrop information comes from the Uniswap Labs X account and the Uniswap Foundation X account. The official support email is support@uniswap.org. The historical claim path was to connect a wallet at app.uniswap.org. Eligible wallets saw a "UNI has arrived" popup in the Uniswap web app.

Uniswap also publishes official Labs links. The website is uniswap.org. The listed YouTube channel is youtube.com/channel/UCApK9TkeyQka97RL3SWeC8A. The listed TikTok account is tiktok.com/@uniswap. One listed X account is x.com/Uniswap. Uniswap Labs says it provides support through support@uniswap.org and that its team will not DM you on Discord.

Sign is not the same as Connect

Uniswap's signature scams page separates those two wallet prompts.

Connect lets a site read wallet data and send requests. You can still refuse what comes next.
Sign, Approve, and Confirm can grant permission. Uniswap says that once you sign, or once a transaction is accepted, there is no way to reverse that action.

A signature permit is a permission a site can request from your wallet. Uniswap says it can be used to prove ownership, transfer tokens, or take other wallet actions. If the wallet cannot decode the request, Uniswap calls that blind-signing. The page says that makes the action harder to verify.

Why a missing network fee can still be dangerous

Uniswap says signatures can be given without network costs. Functionally, the user is clicking through an approval. The completed signature lives offchain until a wallet broadcasts it. That broadcast can happen later, so you may not see movement at the moment you sign.

Uniswap's Permit2 page describes a two-step setup. First comes a one-time onchain token approval, which has a network cost. Second comes a signature approval with no network cost. If a wallet has already approved a token to the Permit2 contract, Uniswap says a signature can be enough for a protocol to spend those tokens, and another wallet can pay the network costs.

The Uniswap app, as an example on that page, uses a limited-time signature approval of 30 days. That 30-day window is Uniswap's stated app example. It is not a universal limit for every site that uses Permit2. Uniswap says any onchain token approval to Permit2 is vulnerable to a malicious signature. A site may ask you to prove you own your wallet, or to sign in.

If a wallet shows a contract address, Uniswap says the official app is app.uniswap.org and the current Permit2 contract is 0x000000000022d473030f116ddee9f6b43ac78ba3. The signature scams page also says phishing sites lure people with false hopes of airdrops, fake swaps, or fake migration tools.

MetaMask's signature phishing page describes the same pattern. Attackers collect an off-chain signature, then use it later. MetaMask says a fake app may tell you that you are depositing tokens or listing an NFT. The signed message may instead grant a token approval. For Permit2, MetaMask says the act of signing is not recorded on chain, and the attacker may wait. A signature can be set to remain valid for weeks.

If you already clicked

These are general steps drawn from Uniswap and MetaMask help pages. They are not a review of any one wallet.

Do not follow claim links from comments, DMs, or unofficial videos. Type or bookmark app.uniswap.org yourself.
Refuse Sign or Approve if you did not start a swap or other intended action on the official app.
If you only connected, you can still refuse signatures. Disconnect the site.
If you signed, check and revoke permissions using the methods MetaMask documents. MetaMask's signature-phishing page points readers to tools such as revoke.cash and a ScamSniffer Permit2 checker. Naming those tools repeats MetaMask's page. It is not a CryptoWorkPro endorsement. Revoking a permission does not reverse tokens already moved.
If you typed a recovery phrase into a website, MetaMask says never to do that. Treat the wallet as compromised. MetaMask describes moving remaining assets to a different account from a clean device. That does not guarantee recovery.

Uniswap's airdropped NFT or token scams page says unexpected tokens may carry a URL, and that claiming can trick a person into approving a contract. The page recommends not attempting to claim an airdrop you were not expecting. Uniswap's impersonation website page says to match the official URL and to be careful with links from Discord or other social media.

The FTC says cryptocurrency payments typically are not reversible. You can report a scam at reportfraud.ftc.gov and through the FBI's Internet Crime Complaint Center. A June 3, 2025 FBI public service announcement is framed around Hedera Hashgraph users. It also says criminals advertise fraudulent NFT airdrop URLs on social media and third-party sites. That PSA is not a Uniswap incident report.

MetaMask's airdrop scams page describes a common pattern: unexpected tokens, a third-party claim site, then either a request for a Secret Recovery Phrase or a confirmation that grants permission to take tokens.

What remains unknown

CryptoWorkPro has not inspected any specific social post, video, or claim website. A future official Uniswap-affiliated airdrop could be announced through the named official channels. The support page currently describes the 2020 UNI airdrop as the only Uniswap Protocol-affiliated airdrop.

A signature's exact power depends on what was signed, any prior Permit2 approval, the token, the amount, and the deadline. This article does not determine whether any named wallet was drained.

Sources

Disclosure: This article explains Uniswap and MetaMask help pages on signatures, Permit2, and airdrop-claim lures, plus FTC and FBI reporting channels. It does not inspect a specific social post, video, or claim website, and it does not determine whether any named wallet was drained. The featured image is a generated editorial illustration, not a screenshot of a real wallet or social app. This article is not financial, legal, or investment advice. AI-assisted research and writing. Cited sources, not AI alone, support the claims.