Order Book
Trades & Volume
Price Chart
Your Transactions
Buy & Sell

The only official URL for U.EXCHANGE is https://u.exchange. Bookmark it once and then use the bookmark whenever you want to visit back.

Do not send your tokens directly to the smart contract, or they will be lost and unrecoverable. Use the Deposit form (upper right) to send the proper deposit transaction.

The only official representatives in the U.CASH Main Telegram Chat are those marked as Admins. The chat room directly on this page currently has no administrator oversite.


U.EXCHANGE is a Decentralized Exchange (DEX) / Trading Platform that lets you trade Ether and Ethereum-based tokens directly with other users. You are responsible for your own account, funds, and private keys. You are responsible for your own trading decisions, and the details and mechanics of the tokens you trade. U.EXCHANGE is not responsible for your decisions, actions, or losses that result from using U.EXCHANGE. U.EXCHANGE makes no guarantee about the tokens that you trade using U.EXCHANGE. U.EXCHANGE does not hold your funds and does not offer refunds. While the information contained on U.EXCHANGE is periodically updated, no guarantee is given that the information provided on U.EXCHANGE is correct, complete, or up-to-date. Note that U.EXCHANGE is built on top of existing DEX smart-contracts and the creators and managers of those contract themselves are responsible for upgrading and maintaining the necessary software for users. By using U.EXCHANGE, you acknowledge this and agree to these terms.

How fees work

How transaction fees work

Every Ethereum transaction involves a gas fee which is paid to miners on the Ethereum network. On U.EXCHANGE, Ethereum transactions are required for depositing, withdrawing, and trading.

If you're using U.EXCHANGE with MetaMask, you can lower the gas price when you accept a transaction to pay a lower gas fee. We recommend a gas fee of 4 gwei if you don't mind waiting a few blocks for your transaction to confirm. If you're using U.EXCHANGE without MetaMask, the gas price is fixed at 4 gwei.

If you're not using MetaMask, you can set the gas price from the "Gas price" item in the account dropdown (upper right).

Without getting into too much technical detail, a 4 gwei gas price corresponds to the following overall transaction fees:

Deposit ETH
~0.0003 ETH
Deposit ETH
~0.0003 ETH
Withdraw ETH
~0.0001 ETH
Deposit Token
~0.0001 ETH
Withdraw Token
~0.0002 ETH
~0.0003 ETH
Cancel Order
~0.0002 ETH

How platform fees work

Almost everything you do on U.EXCHANGE is free, with only one exception. Here is the full list of exchange fees U.EXCHANGE charges:

Place Order (Add Liquidity)
Execute Against Someone Else's Order (Take Liquidity)

An important feature of U.EXCHANGE is that placing an order doesn't involve an Ethereum transaction. Placing an order involves signing a message, which doesn't cost a gas fee. This means that placing an order on U.EXCHANGE is completely free: there's no Ethereum transaction fee and there's no fee if the order trades. The one and only platform fee charged is a 0.3% fee paid by the person executing an order (paid in the instrument being sold). This fee goes directly to external smart-contract operators for providing order-book liquidity and functionality. Currently, U.EXCHANGE itself keeps no fees for itself whatsoever.