The ticker that prints
only when you make the call.

Unveil the Tape

Since 1867 the ticker printed the market one tick at a time. Now your terminal prints — and you call the next one.

Prints fast.
Calls faster.

Print right in your browser. Every 60 seconds, call BTC up or down. Right call ×2, wrong call ×0.5 — on everything you printed that round.

Start in your browser →Watch the 1-min demo ↓
Drag, tap or scroll to reveal

About

The origin
of Call tape

In 1867 a brass machine under a glass dome printed the market one tick at a time, and the room read the tape to make its call.

CALLTAPE is a modern take on that ticker. Your browser prints the tape, the desk checks every print, and once a minute you call where Bitcoin goes next — where signals, speed and history meet.

How it works
The brass mechanism of the ticker: type wheels, copper coils, paper roll

The machine

Built like the ticker.

01

The printer

Your browser does the work. Every print earns a share of the minute.

02

The tape

Every round is printed in public: open, close and each exchange's price.

03

The call

Right call doubles your round. Wrong call halves it. No call, no change.

How it works

A faster
calling system

  1. 01
    ConnectOpen the app and connect your wallet. One free signature — no transaction, no gas.
  2. 02
    CallTap UP or DOWN for the next 60-second round. It locks when the round opens.
  3. 03
    PrintPress Start and your browser prints the live tape. Right call ×2, wrong call ×½.
Launch app Watch the demo
The CALLTAPE ticker under its glass dome, tape spilling over the plinth

See it in a minute

No terminal. No jargon.

The rule

One call. Three outcomes.

×2Right callBTC closed the round the way you called it.
×½Wrong callThe missing half goes back to the vault, not to anyone else.
×1No call · flatMoved $1 or less, or you sat it out. Just your prints.

The round's price is the median of Coinbase, Kraken and Bitstamp at open and at close. Every round is published with each exchange's print — check them yourself.

Live desk

Live ticker

The market around the call, refreshed every few seconds. Rounds settle on BTC.

Open the full desk
BTC / USD · this round — —
Round —
—
▲ 0 ▼ 0 next round
Session—
Per round—
Desks—
Hashrate—
Crowd hit rate—
Released—

Floor board

#Desk$TAPECallsHitBest streak
The board fills when the bell rings.

The vault

50,000,000 $TAPE
over thirty days.

Days 1–7Opening Bell2,596.05 / round
Days 8–14Morning Session1,298.03 / round
Days 15–21Power Hour649.01 / round
Days 22–30Closing Bell324.51 / round

5% of supply sits in a public vault wallet. Payouts go out every hour once you have 100 $TAPE pending. One desk can take at most 10% of a round once ten desks are printing. Up to three wallets per IP. A 5% desk fee on every round goes to the CALLTAPE treasury and pays for the desk, the servers and the team.