RizonHow to practise 5-minute and 15-minute Bitcoin up/down trading for free
Practise short-horizon Bitcoin up/down trading with paper money on live prices, with five drills, the numbers to know and the mistakes that cost the most.
Short answer: Use a paper exchange that runs on live prices, so the prices and the mechanics are real and only the money is pretend. On Rizon you open the page and you're trading: $1,000 of practice money, no signup, Bitcoin contracts over 15 seconds, 1 minute or 5 minutes, each paying a fixed 2×. Practise four things: judging how far a strike is for the time left, keeping one size, trading release minutes, and keeping a log. Then work out what fees will do to your numbers before you trade real money anywhere.
Polymarket and Kalshi trade real money, and their up/down markets charge takers a fee (1.75¢ a share at 50¢ on Polymarket). Practising there costs money on every trade. Practising on paper costs nothing, as long as the paper market is real enough to learn from.
What a useful practice market needs
- Live prices. Simulated prices teach you a simulator. Rizon's Bitcoin price comes from Coinbase, with Kraken as a backup.
- Real mechanics. An order book, other traders on the other side, positions that settle on the actual price at expiry.
- A score that's public. Rizon's leaderboard ranks every account that has traded by realised PnL, people and bots alike, so practice has a scoreboard.
- Short horizons. You learn from outcomes, and a 15-second or 1-minute contract gives you dozens in a session.
Getting started on Rizon
| Step | How |
|---|---|
| Open the site | rizon.markets: an account with $1,000 of practice money is made for you, no email needed |
| Pick a horizon | The bracket under the chart, or ← →: 15 s, 1 m, 5 m |
| Pick a side | Hover the blue line (higher) or the orange line (lower) on the chart's right edge, or press ↑ or ↓ |
| Confirm | Enter, or the chip's Confirm button |
| Watch it | Your position is a green line at its strike and expiry second; the price runs toward it, and through it |
| Refill | Once your balance is under $10, "Refill paper balance" in your account puts it back to $1,000 |
Every contract starts when you trade and runs its full length, so there's no window to catch and no price to beat set before you arrived. You pay your size; if Bitcoin finishes on your side of the strike you get twice it back. Exactly at the strike is a push and you get your size back.
Rizon's Bitcoin horizons are 15 seconds, 1 minute and 5 minutes; there's no 15-minute contract. If 15-minute windows are what you'll trade elsewhere, practise on the 5-minute contract: the skills below are the same, and you get three times as many outcomes.
Five drills
- Distance before direction. Before each trade, say out loud how far the strike is from the price, and compare it with a typical move for the horizon (table below). A strike $20 away is beyond the median 1-minute move and inside the median 5-minute one. Getting the direction right doesn't help if the strike was too far away for the time left.
- Fifty trades, one size. Pick a size and don't change it for 50 trades. Log each: horizon, side, distance to strike, result. After 50, check your win rate against 50%, the break-even on a 2× payout with no fees.
- The release minute. Trade the minute after a scheduled release, such as CPI at 8:30 a.m. New York time. The first minute after CPI has averaged about ten times an ordinary minute (the data). Practise how quickly strikes move, and how wide the book gets.
- The thin lead. Hold a 15-second contract into its last seconds when the price is within a few dollars of your strike, and watch how often it changes sides. In fixed 5-minute windows, a lead under $10 thirty seconds out was overturned 31% of the time (the data).
- The quiet hours. Trade the same horizon at 14:00 UTC and at 21:00 UTC. In the 30 days to 26 October 2026, the median 1-minute move was $29.85 at the first and $10.20 at the second. Same contract, a third of the range.
The numbers to keep in your head
From every second of 27 September to 26 October 2026, with Bitcoin near $83,000 (full data):
| Horizon (s) | Median move ($) | 90th percentile move ($) | Price unchanged (%) |
|---|---|---|---|
| 15 | 5.07 | 26.01 | 17.13 |
| 60 | 15.37 | 54.58 | 5.18 |
| 300 | 36.55 | 123.47 | 0.52 |
If you trade from code, GET /api/v1/markets returns each market's sigma, its realised one-sigma move over the horizon from recent ticks, so you can check distance in today's terms (API docs).
Mistakes that cost the most
- Doubling after a loss. On a 2× payout, doubling the size after each loss means the sixth trade after five straight losses is 32 times the first. Five losses in a row at even chances happens about 3% of the time: rare per streak, routine over a few hundred trades.
- Treating paper as free. If you'd never trade $500 of real money on one 15-second contract, don't do it on paper. Practise the size you'll use.
- Trading the window, not the price. In fixed windows, late in the window the side that's ahead is already expensive: a random arrival in our data found it worth a median 74¢ (the data). Being right about direction isn't enough if you paid for it.
- Forgetting the feed. Each venue settles on its own source (Chainlink's BTC/USD average on Polymarket, CF Benchmarks' index on Kalshi, Coinbase on Rizon). In close calls, a few dollars between feeds decides the result.
- Counting wins, not PnL. A 60% win rate at 70¢ prices loses money. Track profit and loss, not hit rate.
Before you trade real money
Fees move the break-even. On a cents market, buying a share at price p wins 1 − p and costs p plus the fee. With Polymarket's crypto taker fee (shares × 0.07 × p × (1 − p), fees), the win rate you need is:
| Price paid (¢) | Break-even win rate with no fee (%) | Break-even win rate with the taker fee (%) |
|---|---|---|
| 50 | 50.00 | 51.75 |
| 60 | 60.00 | 61.68 |
| 70 | 70.00 | 71.47 |
| 80 | 80.00 | 81.12 |
| 90 | 90.00 | 90.63 |
Makers (resting limit orders) pay no fee on Polymarket. Kalshi's taker fee uses the same formula, rounded up (fee schedule). If your paper win rate at 50¢-equivalent prices is 51%, it doesn't survive a 1.75¢ taker fee.
FAQ
Can I practise Bitcoin up/down trading without money?
Yes. Rizon is a paper exchange on live Bitcoin prices: you start with $1,000 of practice money, without signing up, and trade 15-second, 1-minute and 5-minute contracts.
Is paper trading realistic?
On a live-price exchange, the market is real: real prices, a real order book, real counterparties on the other side of your trades. What's missing is the pressure of real money, which is why it helps to practise at the size you'd really use.
What win rate do I need on a 2× payout?
50%, ignoring pushes, on Rizon, which charges no fees. On a cents market, the break-even is the price you paid plus the fee: 51.75% for a 50¢ share with Polymarket's crypto taker fee.
Does Rizon have 15-minute Bitcoin contracts?
No. Its Bitcoin horizons are 15 seconds, 1 minute and 5 minutes, and each starts when you trade. For 15-minute windows elsewhere, the 5-minute contract is the closest practice.
What should I practise first?
Distance: how far the strike is from the price, against a typical move for the horizon. It decides more short-horizon trades than direction does.