Connecting…

The CALLTAPE app

Guess where Bitcoin goes
in the next minute. Earn $TAPE.

  1. 1

    Connect your wallet

    One signature to prove it's you. Free — no transaction, no gas.

  2. 2

    Press Start

    Your browser starts "printing" — small puzzles that earn you a share of each minute's $TAPE.

  3. 3

    Tap UP or DOWN

    Guess Bitcoin's next minute. Right guess: double your share. Wrong: half.

Need help? Watch the 1-minute demo.

Bitcoin now Round —
——
—until the next round

Your guess for the next minute

Pick one. It locks when the next round starts.

Your printer

Off

Keep this tab open. More prints = a bigger share of every minute's $TAPE.

You have earned 0.00 $TAPE
Waiting to be sent0
Already sent
Right guesses—

Sent to your wallet every hour once you have 100 $TAPE waiting.

What happened each round

Each round shares a fixed amount of $TAPE between everyone printing. A 5% desk fee goes to the CALLTAPE treasury. Prices: median of Coinbase, Kraken and Bitstamp — audit every round. Not financial advice.

Quick check

What is 2 + 2?