How BTC 15-minute markets work

A plain-English guide to 15-minute Bitcoin markets and how to read one on StrikeCall.

What is a 15-minute Bitcoin market?

It asks one question: when the 15 minutes end, will Bitcoin be above or below a set price, called the strike? On prediction-market exchanges such as Kalshi, a new window opens every 15 minutes, at :00, :15, :30 and :45.

How does a window settle?

Each exchange settles with its own reference Bitcoin price, measured around the close. The exact source and method are written in each market's rules. Always read them on the exchange before you trade.

What do the YES and NO prices mean?

They trade between 1¢ and 99¢. A YES at 80¢ pays $1 if the window closes above the strike, so the price shows roughly how likely the market thinks that is. Prices move fast in the last minutes.

What does StrikeCall show?

• Your strike: you type it in from your market.
• BTC now: Kapowo's live Bitcoin price, every second.
• The gap between them, and time left in the window, in your own time zone.
• Pick 5 min, 15 min, 1 hour or 4 hours.
• For 15-minute windows you choose to watch, a verdict: UP or DOWN, against your strike. The same verdict for every user.

Good to know

• Nothing here is financial advice. StrikeCall never places trades and never connects to anyone's exchange account.
• Kalshi is a US exchange regulated by the CFTC, with its own rules on who can trade and from which states. Check Kalshi for your state.
• You must be 18+.

StrikeCall is Kapowo's own product. Information only · Not financial advice · Not affiliated with or endorsed by Kalshi · 18+