Your browser sends the swap.
Your browser sends the transaction straight to the network. A built-in fee sponsor checks whether it will cover the network cost. No swap service submits it for you
DIRECT SUBMISSION · SEPARATE FEE SPONSORA more private way to trade
Trade from a saved balance through Uniswap without sending the swap from your wallet
HIDE WHICH DEPOSIT YOU SPENDPRODUCT PREVIEW / NOT A LIVE QUOTE
YOUR SECRET FILE↗
秘密
•••• •••• •••• ••••
Keep it safeControls your funds
himitsuToken swap
ETH0.1You send
⇄$hUSD•••You receive
Swap onUniswap
You approve each swap
Only the approved amount · No swap service
BUILT ON OPEN PROTOCOLSEthereum One transaction · ordered stepsUniswap Shared liquidity
SAVED FILES · DIRECT SWAPS
Hide which deposit you spent.
Swap through Uniswap.
Himitsu lets you use a saved private note file to swap through Uniswap. The network checks that the file can spend the funds, while a separate funded account can pay some network fees
Only the amount you approve.
Himitsu sends the amount you approve to Uniswap. The exchange cannot pull extra tokens from your wallet
WETH → UNISWAP → hUSDSave the file for your new tokens.
The network checks that your file can spend the funds without showing which deposit is yours. Save the new file to access the tokens you receive
YOUR FILE CONTROLS YOUR FUNDS- 01
Deposit ETH and save your file
Connect your wallet and deposit 0.1 ETH. Download the secret file before you approve the deposit. It is the only way to access those funds
- 02
Swap using your saved file
Add your file, review the current price and minimum you may receive, then save a new file for your hUSD. Himitsu swaps through Uniswap and puts the tokens you receive into your new balance.
- 03
Withdraw when you’re ready
Add your latest file and send the balance to an address you choose. There is no account that can restore a lost file, so keep it somewhere safe.
A FEW THINGS TO KNOW.
Good questions.
01What is Himitsu?
Himitsu lets you trade tokens without revealing which deposit you spent. Save a private note file when you deposit, then use it to swap through Uniswap or withdraw your funds.
02What is the saved file?
It is called a private note. This secret file gives access to your deposited funds. Save it before depositing, and save the new file before each swap. Anyone who gets the file can spend those funds. A connected wallet cannot restore a lost file.
03Who sends my swap and pays the network fee?
Your browser checks that you own the funds and sends the transaction directly to the network. The app does not use a service to submit swaps for you. A separate, funded sponsor account pays eligible network fees.
04Can Uniswap take more tokens than I approve?
No. Himitsu sends only the amount you approve to Uniswap. It does not give the exchange permission to take more from your wallet.
05Is everything about my trade private?
No. The system hides which deposit you spend. The amount, time, and swap activity are still public
06Why does Himitsu use EIP-8141?
EIP-8141 lets one transaction run the funds check, fee sponsor, and swap in order. Himitsu uses it instead of ERC-4337, which sends smart account actions through a separate entry contract and submission service. ERC-4337 can also cover fees, EIP-8141 fits the transaction flow we built.