Bitcoin prediction markets let you trade a simple question — will bitcoin be above a certain price at a certain time — with a fixed payout and a fixed maximum loss. A contract pays $1 if the answer is yes and $0 if it is no. There is no leverage to manage, no funding rate, and no liquidation: the most you can lose is what you paid for the contract.
Both major venues list these markets, and they settle differently in ways that matter. Kalshi settles every crypto contract on a 60-second average of the CF Benchmarks Real-Time Index. Polymarket settles its shortest crypto markets on Chainlink price data and its hourly and daily ones on Binance candles. A trader who does not know which source and which moment a contract uses is guessing at what they bought.
This guide covers the market types on each venue, exactly how they settle, how the prices relate to bitcoin's volatility, why prices flip in the final minute, and how these contracts compare with futures and options. Price examples are illustrative; check the live markets for current levels.
| Market type | Where | Example question | Settles on | Typical horizon |
|---|---|---|---|---|
| Up or down, very short | Polymarket | Will bitcoin be higher in 15 minutes? | Chainlink time-weighted price | 5 minutes to 4 hours |
| Up or down, hourly and daily | Polymarket | Will bitcoin close this hour higher? | Binance BTC/USDT candles | 1 hour to 1 day |
| Price range brackets | Kalshi | Where will bitcoin be at 5 p.m. ET? | 60-second average of CF Benchmarks index | 15 minutes to a year |
| Above or below a price | Kalshi and Polymarket | Will bitcoin be above a level on a date? | Source named in each market's rules | Daily to yearly |
| Touch markets | Polymarket | What price will bitcoin hit this month? | Source named in each market's rules | Weekly to monthly |
How Bitcoin Prediction Markets Work
Each contract is a binary bet on a price condition at a defined moment. "Bitcoin above $X at 5 p.m. ET" pays $1 if the settlement price is above $X and nothing otherwise. The market price of the contract is the crowd's estimate of the probability: a contract at 30¢ implies a 30% chance.
That structure is simpler than it looks, and it has one important property: the payoff does not grow with the size of the move. If bitcoin finishes $1 above the strike or $10,000 above it, the contract pays the same $1. That makes these markets a way to bet on a direction or a range rather than on a magnitude, and it makes them very different from holding bitcoin itself. Our guide to how prediction markets work covers the contract mechanics in general.
Markets run in series. On the shortest-dated ones, a new contract opens as the previous one closes, so there is always a market on the next 15 minutes or the next hour. Longer-dated markets — the end of the month, the end of the year — trade for weeks and move with every major swing in the price.
Kalshi Bitcoin Markets and the CF Benchmarks Index
Kalshi settles all of its crypto contracts on the CF Benchmarks Real-Time Indices. For bitcoin that is the Bitcoin Real Time Index, a price aggregated across regulated US-dollar trading venues and published once per second. Kalshi takes the index's prints over the final 60 seconds before a contract closes and averages them into a single settlement value.
The averaging is deliberate. It makes the settlement price harder to manipulate than a single print, because moving an average of 60 prints across several venues is far more expensive than spiking one exchange for a second. It also means the settlement value is being formed in real time during the final minute, which explains the price behaviour we cover below.
Kalshi lists bitcoin contracts at several frequencies — 15-minute, hourly, daily, weekly, monthly and yearly — mostly as range brackets and above-or-below thresholds. Every frequency uses the same index and the same 60-second averaging, so a trader who understands one understands all of them. Kalshi is regulated by the CFTC as a designated contract market and settles in US dollars; our Kalshi review covers the platform.
Polymarket Crypto Markets: Chainlink and Binance
Polymarket uses different settlement sources for different durations. Its five-minute, 15-minute and four-hour "up or down" markets settle against a time-weighted average price computed from Chainlink's high-frequency price data. Its hourly and daily up-or-down markets settle on Binance BTC/USDT candles — whether the candle closed above where it opened.
That split has practical consequences. Chainlink's aggregate price and Binance's own price usually agree, but in fast markets they can briefly diverge, and a contract settles on its source, not on what any other exchange shows. Traders who automate these markets pay close attention to the source; a strategy tuned to one feed can fail on a contract that settles on the other. Our explainer on how prediction markets resolve covers why the rules, not the headline, decide the payout.
Polymarket also lists longer-dated crypto markets: whether bitcoin will be above a level on a date, or which prices it will touch during a month. Each names its resolution source in the rules. Polymarket settles in USDC on Polygon, so trading requires a funded wallet — our guide to depositing on Polymarket walks through it, and our Polymarket review covers the platform.
How Bitcoin Contracts Are Priced
A bitcoin range or threshold contract is, mathematically, a digital option: it pays a fixed amount if the price finishes past a level. Its fair value depends on two things — how far the level is from the current price, and how volatile bitcoin is over the time remaining.
Take an illustrative example. If bitcoin trades at $100,000 and a contract asks whether it will be above $100,000 in an hour, the fair price is close to 50¢, because a short-term move is about equally likely in either direction. A contract asking whether it will be above $102,000 in an hour is far cheaper, because a 2% move in an hour is unusual. The same $102,000 contract with a week to run is worth much more, because a week gives bitcoin time to move that far.
That is why prices on these markets move with volatility as well as with the price. When bitcoin becomes more volatile — around a Fed decision, for example — contracts far from the current price get more expensive, and contracts near it get closer to 50¢. Our Fed rate odds show how macro events drive that volatility. To judge whether a contract's price is worth paying given your own estimate, use our expected value calculator.
Reading a Bitcoin Bracket Ladder
Kalshi's range markets list a ladder of adjacent price brackets for the same settlement time, and exactly one of them will pay. That makes the ladder a picture of the market's forecast. Read the prices from the bottom bracket to the top and you have a probability distribution for where bitcoin will settle.
An illustrative ladder for a daily contract might show 5¢ on the bracket two steps below the current price, 20¢ one step below, 45¢ on the bracket containing the current price, 22¢ one step above and 6¢ two steps above. The market's median sits in the middle bracket, it leans very slightly upward, and it assigns about an 11% chance to a move of two brackets in either direction, with the last couple of cents spread across the brackets further out. When volatility rises, the middle bracket falls and the outer brackets rise, and the ladder flattens.
Add up every bracket's ask and the total will be a little over $1. That excess is the overround, the built-in cost of buying the whole ladder, and it is usually largest in the far brackets, where market makers quote a minimum price regardless of the true chance. Our vig guide explains how to measure it, and our vig calculator strips it out to show the fair probabilities.
Why Prices Flip in the Final Minute
Traders new to short-dated crypto markets are often surprised to see a contract swing from 80¢ to 10¢ in the last seconds. That is not manipulation in the usual case; it is the settlement mechanism working as designed.
On Kalshi, the settlement value is the average of the index over the final 60 seconds. As that minute progresses, more of the average is locked in, and the contract's value converges toward $1 or $0 based on the prints already recorded. If bitcoin is sitting just above the strike and then drops sharply in the final 30 seconds, the average can slip below the strike, and the price collapses accordingly. On Polymarket's time-weighted markets the same logic applies over their own averaging window.
The practical lesson is that the final minute belongs to automated traders who can read the settlement feed in real time. Manual traders who hold into the close are exposed to moves they cannot react to. Our analysis of AI trading bots in prediction markets covers how much of this activity is automated, and our guide to prediction market APIs covers the tools they use.
Bitcoin Prediction Markets vs Futures and Options
Compared with bitcoin futures, prediction market contracts have a defined maximum loss. A futures position can lose more than its margin in a violent move and can be liquidated; a 30¢ contract can lose 30¢ and no more. There are no funding payments and no margin calls.
Compared with options, prediction markets are simpler but less flexible. An option's payoff grows with the size of the move; a binary contract's does not. Options let you build almost any payoff shape, while prediction markets offer a menu of fixed brackets and thresholds. For a trader with a view on a specific level at a specific time, the binary contract is often the cleaner instrument; for someone who wants to profit from a large move, an option is usually better.
Costs differ too. Kalshi charges 0.07 × contracts × price × (1 − price) per trade, and Polymarket's taker fee runs 0.75–1.80% by category, with resting limit orders paying nothing. On short-dated contracts traded frequently, those costs add up quickly. Our market fee calculator shows the cost at any price, and our Kalshi fees explainer covers the formula.
Strategies Traders Use on Bitcoin Markets
Range views. If you expect bitcoin to stay within a band into a settlement time, buying the brackets inside that band — or selling the ones outside it — expresses that view directly. This is effectively selling volatility, and it loses when bitcoin makes a large move.
Event trading. Scheduled events such as Fed decisions and inflation releases reliably move bitcoin. Traders take positions in contracts expiring shortly after the event, based on their view of how the market will react.
Hedging holdings. Holders who want protection against a drawdown can buy contracts that pay if bitcoin finishes below a level. Our guide to hedging with prediction markets works through the sizing.
Market making. Automated traders quote both sides of short-dated markets and earn the spread, taking on the risk of being caught by a sudden move. Our guide to market making on prediction markets explains the economics.
The Risks of Bitcoin Prediction Markets
The shortest-dated markets are dominated by automated traders with faster data and faster execution. A manual trader placing market orders in the final minutes is usually on the wrong side of that speed. Use limit orders — our guide to limit orders explains how — and avoid holding short-dated positions into the close unless that is your specific plan.
Liquidity varies widely. The nearest contracts on both venues are usually busy; contracts far from the current price or far in the future can be thin, with wide spreads. Our guide to prediction market liquidity explains how to check before trading. Settlement-source mismatches, described above, are the other trap, particularly for anyone trading the same idea across both venues.
Profits are taxable when realised, and frequent short-dated trading can produce a large number of taxable events. Kalshi issues a 1099-MISC; Polymarket issues nothing, which does not remove the obligation. Our prediction market tax guide covers the treatments in use.
How to Start Trading Bitcoin Prediction Markets
For most US traders, Kalshi is the simplest route: regulated, dollar-settled, and with the same settlement rule across every bitcoin contract. Polymarket offers a wider range of short-dated formats and settles in USDC. Our Polymarket vs Kalshi comparison covers the trade-offs, and our ranking of the best prediction market apps compares the full field, including crypto-native venues such as Crypto.com's OG.
Start with daily or weekly contracts rather than 15-minute ones. Longer horizons give you time to think, reduce the importance of execution speed, and make the fee a smaller share of each trade. Check the settlement source before every trade, size small, and treat the first few weeks as learning the market's behaviour rather than making money from it.
Frequently Asked Questions
How do bitcoin prediction markets work?
Each contract pays $1 if bitcoin meets a price condition at a set time — above a level, within a range, or higher than it started — and $0 otherwise. The contract's price is the market's probability, and your maximum loss is what you paid.
How does Kalshi settle bitcoin contracts?
On a 60-second average of the CF Benchmarks Bitcoin Real Time Index, sampled once per second over the final minute before the contract closes. Every Kalshi crypto contract uses the same method. See our Kalshi review.
What price source does Polymarket use for bitcoin markets?
Its five-minute, 15-minute and four-hour up-or-down markets settle on Chainlink time-weighted price data, while its hourly and daily ones settle on Binance BTC/USDT candles. Longer-dated markets name their source in the rules.
Why do bitcoin prediction market prices flip at the last second?
Because the settlement value is an average formed during the final window. As more of the average is recorded, the contract converges toward $1 or $0, and a late move in bitcoin can swing it sharply.
Are bitcoin prediction markets better than futures?
They are simpler and have a defined maximum loss, with no leverage, funding or liquidation. Futures and options are better for betting on the size of a move rather than whether a level is crossed.
Can I hedge my bitcoin with prediction markets?
Yes, by buying contracts that pay if bitcoin finishes below a level at a set time. Match the settlement source and time to your exposure. Our guide to hedging with prediction markets explains sizing.
Are bitcoin prediction markets legal in the US?
Kalshi offers them as a CFTC-regulated exchange, and they are generally less contested than sports contracts. Check our legal guide for your state.
What are the fees on bitcoin prediction markets?
Kalshi charges 0.07 × contracts × price × (1 − price) per trade. Polymarket's taker fee is 0.75–1.80% by category, and resting limit orders pay nothing. Frequent short-dated trading makes fees a large share of costs.
