Make your first call
From the terminal to a settled Window in five steps, with testnet dollars.
A call is UP or DOWN on one Window: one asset, one start, one close. UP wins if the closing print is at or above the opening print; DOWN wins if it is below. A winning contract pays $1.00.
Signed out on a phone: the terminal's tour, then UP on BTC and CLOSE, on paper at the live book's price.
0:20 · Recorded 13 October 2026 on the deployed testnet product · Silent, with captions.
Read the transcript
0:00 · Open the terminal. Signed out, it trades paper dollars on live prices.
0:02 · Skip the tour. Five steps explain the line, UP and DOWN, the value pill, Trail and Close.
0:05 · Wait for the book. UP lights once someone is on the other side at this size.
0:08 · Tap UP. A paper call fills at the live book's price.
0:10 · Watch what it's worth. The pill shows what CLOSE pays now.
0:15 · Close it. CLOSE sells it back at what the book pays.
Open the terminal
Open the terminal. Signed out, it trades on paper: the equity pill reads DEMO, with 10,000 paper dollars kept in this browser. A paper call fills at the live book's price and settles on the real signed result. Nothing reaches the chain.
Create an account
Tap Sign in, then Create account. Face ID, a fingerprint or a security key makes a passkey, and your Tempo account comes from it — no seed phrase, no extension, no gas token. Test dollars arrive while you sign up.
Already have a wallet? Tempo Wallet, a browser wallet and WalletConnect work too. See your account.
Turn on one-tap
After your first trade asks your passkey, a toast offers Turn on (it is also in Trade settings). One passkey prompt now, and every tap after it signs itself, up to $25 a day for 24 hours. Skip it and each trade asks your passkey instead. See one-tap trading.
Pick a Window and tap
The asset chip switches markets; the Window chip shows the lane and its clock ("trades 2:32"). The card on the chart shows your size, what UP and DOWN pay per dollar, the fees (free) and the trailing distance.
Tap UP or DOWN. The position shows the moment the trade is sent — "Confirming on Tempo…" — and the receipt replaces it with what the engine booked.
Close it or hold it
The position's value is what CLOSE pays right now. Close any time, set take-profit, stop-loss or a trail (exits), or hold to the close: the Window settles on its signed closing print and the settler pays winners a few minutes later (settlement).
Testnet
Mitoshi runs on Tempo testnet (Moderato). Testnet pathUSD has no value and can't be bought or sold. The books, prints, settlement and receipts are real contracts on a real chain.