ProphetX is one of the most important platforms for Matched Betting in the United States because it is a peer-to-peer betting exchange. On an exchange, you bet against other users instead of the house, which means no built-in vig and generally better odds.
In the first guide, you learned that Matched Betting is not about predicting the result of a game. It is about using sportsbook offers in a controlled way. ProphetX is usually the platform that allows you to cover the opposite side of your sportsbook bet.
In this guide, you will learn how ProphetX works, what makes it different from a sportsbook, how to place your covering bet correctly, and how to check that it is matched.
What Makes ProphetX Different
A traditional sportsbook sets its own odds and takes the other side of every bet you place. Those odds include a built-in margin, called the vig, which always works in favor of the house.
ProphetX is different because it is a peer-to-peer exchange. There are no house odds and no built-in vig: the users set the prices, and ProphetX simply matches people who want opposite sides of the same wager. This is why the odds on ProphetX are generally better than the odds at a traditional sportsbook.
When you bet on ProphetX, you have two options: you can take the odds currently available, or you can post an offer at your own price and wait for another user to take it.

How a Bet Works on ProphetX
A bet on ProphetX is a normal wager. You are betting that an outcome will happen. For example, if you bet on the Lakers to win, you win your bet if the Lakers win and you lose it if they do not. This is the type of bet most people already know.
The difference from a sportsbook is not the bet itself. The difference is who takes the other side: at a sportsbook, the house takes the other side of your bet; on ProphetX, another user does.
How You Cover Your Sportsbook Bet on ProphetX
Imagine a sportsbook offer requires you to bet on the Lakers to win. If you only place that sportsbook bet, you are gambling, because your result depends on the Lakers winning.
With ProphetX, you can cover that bet by betting on the opposite outcome: the sportsbook bet on one side, and a ProphetX bet on the other side of the same market. One bet will win and the other will lose. That is normal. In Matched Betting, what matters is the combined result of the full position, not whether one single bet wins.
You do not have to work out the two stakes yourself. The NinjaBet Dutcher and Calculator compute both stakes so that the result is locked whatever happens. And the money you risk on ProphetX is simply your stake, exactly like any normal bet.
Registering on ProphetX
To start, open ProphetX from the button or link inside NinjaBet and create your account. Fill in the required information carefully and use your real details.
To register you must be at least 18 years old. ProphetX is available in every US state except Nevada. Verification is instant in most cases: you confirm your phone number with an SMS code and provide your date of birth, your address, and the last four digits of your SSN. Usually no document upload is required.
Deposit
After registration, you can deposit right away or wait until you are ready to place your first covering bet.
ProphetX accepts deposits through online banking via Aeropay, cryptocurrency, or wire transfer. The minimum deposit is $10 ($1,000 for wire transfers), and there are no deposit fees.
The important thing is this: deposit enough to place your covering bets comfortably. Your ProphetX stake is often close in size to your sportsbook stake, and you do not want to get stuck halfway through an offer because your balance is too low.
Finding Your Way Around ProphetX
Once you are logged in, you will find the markets organized by sport and league. Open the sport you need, then the league, and select the game you are looking for to see its markets and the odds currently available.
Take a moment to look around before your first real offer. Like most exchanges, liquidity varies by market: major leagues and main markets fill fast, while smaller markets can take longer to match.
Finding a match
Inside ProphetX, you can find an event in two ways. You can browse by sport and league — for example, open basketball, choose the NBA, and select a game like Lakers vs Celtics. Or, if you already know the match, tap the search icon and type a team or event name to jump straight to it — often the faster route once you know what you're looking for.
The exact game doesn't matter while you're learning. But when you're following a real NinjaBet offer, you must select the same event you bet on at the sportsbook. If the two events don't match, you're not covered.

Choosing the correct market
After selecting the game, you will see different markets. For most US sports, the most common beginner market is the Moneyline, the market on which team wins the game.
The rule is strict: the ProphetX market must correspond exactly to the market of your sportsbook bet. If your sportsbook bet is on the Moneyline, your ProphetX bet must be on the Moneyline too. Do not confuse the Moneyline with other markets such as the Point Spread, the Totals (Over/Under), or player props. These are different markets and they do not work the same way.
Inside the correct market, you then select the opposite outcome: if your sportsbook bet is on Team A, your ProphetX bet goes on Team B.
A common beginner mistake is placing the ProphetX bet in the right market but on the same outcome as the sportsbook bet, or on the right outcome but in the wrong market. Always check both the market and the selection before confirming.

Placing Your Bet
Once you've opened the correct event and market, select the outcome you need to bet on — the opposite of your sportsbook bet and:
- Click on the Odds.
- Enter the amount of the Bet.
- Click on Confirm Trade.
Check that the bet is Filled
After placing a bet on ProphetX, you need to check that it has been Filled.
Your bet is Filled (matched) when another user takes the other side of your wager. Once filled, that part of your bet is locked: it cannot be changed or cashed out, and your position is active.

If your bet is still pending, it means no one has taken your offer yet, so you are not covered. A bet can also be partially filled: part of it matches right away and the rest stays pending in the market. You can cancel any pending part at any time, and the funds return to your balance.
This is very important for Matched Betting.
If your sportsbook bet is already placed but your ProphetX bet is still pending, your position is exposed. If the odds have moved, cancel the pending part, update the odds in the NinjaBet calculator, and place the bet again with the new numbers.
Before moving on, always check that your bet is fully Filled.
ProphetX Commission
ProphetX charges commission only on your net winnings. If your bet loses, you pay nothing. If you cancel a pending offer, you pay nothing.
The commission is 2%. For example, if you win $10 on ProphetX, the commission is $0.20 and you receive $9.80 of net profit.
The NinjaBet tools include commission in the calculation, so the stakes already account for it.
Common mistakes to avoid
The most common ProphetX mistakes are usually simple mistakes.
Do not bet on the wrong event or in the wrong market. Do not bet on the same outcome you bet at the sportsbook: on ProphetX you always cover the opposite outcome. Do not take odds that have moved since you calculated; if the price changed, update the NinjaBet calculator first. Do not leave an offer pending too close to kickoff, or the game may start while you are still uncovered. Do not forget commission. Do not guess stakes instead of using the NinjaBet tools.
Matched Betting is not difficult, but it requires precision. Most mistakes happen when users rush.
Final summary
ProphetX is useful because it lets you bet against other users at exchange odds, with no built-in vig.
To cover a sportsbook bet, you bet on the opposite outcome on ProphetX. One bet wins and the other loses, but the combined result is locked.
The most important concept to understand is that your risk on ProphetX is simply your stake, and commission is charged only on net winnings.
For Matched Betting, you should not guess the covering stake. Use the NinjaBet Dutcher or Calculator, copy the correct numbers, place the bet on ProphetX, and check that it is matched.
You are not trying to predict the game. You are using ProphetX to control the result.
What Makes ProphetX Different
A traditional sportsbook sets its own odds and takes the other side of every bet you place. Those odds include a built-in margin, called the vig, which always works in favor of the house.
ProphetX is different because it is a peer-to-peer exchange. There are no house odds and no built-in vig: the users set the prices, and ProphetX simply matches people who want opposite sides of the same wager. This is why the odds on ProphetX are generally better than the odds at a traditional sportsbook.
When you bet on ProphetX, you have two options: you can take the odds currently available, or you can post an offer at your own price and wait for another user to take it.

How a Bet Works on ProphetX
A bet on ProphetX is a normal wager. You are betting that an outcome will happen. For example, if you bet on the Lakers to win, you win your bet if the Lakers win and you lose it if they do not. This is the type of bet most people already know.
The difference from a sportsbook is not the bet itself. The difference is who takes the other side: at a sportsbook, the house takes the other side of your bet; on ProphetX, another user does.
How You Cover Your Sportsbook Bet on ProphetX
Imagine a sportsbook offer requires you to bet on the Lakers to win. If you only place that sportsbook bet, you are gambling, because your result depends on the Lakers winning.
With ProphetX, you can cover that bet by betting on the opposite outcome: the sportsbook bet on one side, and a ProphetX bet on the other side of the same market. One bet will win and the other will lose. That is normal. In Matched Betting, what matters is the combined result of the full position, not whether one single bet wins.
You do not have to work out the two stakes yourself. The NinjaBet Dutcher and Calculator compute both stakes so that the result is locked whatever happens. And the money you risk on ProphetX is simply your stake, exactly like any normal bet.
Registering on ProphetX
To start, download ProphetX app from the button below and create your account. Fill in the required information carefully and use your real details.
To register you must be at least 18 years old. ProphetX is available in every US state except Nevada. Verification is instant in most cases: you confirm your phone number with an SMS code and provide your date of birth, your address, and the last four digits of your SSN. Usually no document upload is required.
Deposit
After registration, you can deposit right away or wait until you are ready to place your first covering bet.
ProphetX accepts deposits through online banking via Aeropay, cryptocurrency, or wire transfer. The minimum deposit is $10 ($1,000 for wire transfers), and there are no deposit fees.
The important thing is this: deposit enough to place your covering bets comfortably. Your ProphetX stake is often close in size to your sportsbook stake, and you do not want to get stuck halfway through an offer because your balance is too low.
Finding Your Way Around ProphetX
Once you are logged in, you will find the markets organized by sport and league. Open the sport you need, then the league, and select the game you are looking for to see its markets and the odds currently available.
Take a moment to look around before your first real offer. Like most exchanges, liquidity varies by market: major leagues and main markets fill fast, while smaller markets can take longer to match.
Finding a match
Inside ProphetX, you can find an event in two ways. You can browse by sport and league — for example, open basketball, choose the NBA, and select a game like Lakers vs Celtics. Or, if you already know the match, use the search field and type a team or event name to jump straight to it — often the faster route once you know what you're looking for.
The exact game doesn't matter while you're learning. But when you're following a real NinjaBet offer, you must select the same event you bet on at the sportsbook. If the two events don't match, you're not covered.

Choosing the correct market
After selecting the game, you will see different markets. For most US sports, the most common beginner market is the Moneyline, the market on which team wins the game.
The rule is strict: the ProphetX market must correspond exactly to the market of your sportsbook bet. If your sportsbook bet is on the Moneyline, your ProphetX bet must be on the Moneyline too. Do not confuse the Moneyline with other markets such as the Point Spread, the Totals (Over/Under), or player props. These are different markets and they do not work the same way.
Inside the correct market, you then select the opposite outcome: if your sportsbook bet is on Team A, your ProphetX bet goes on Team B.
A common beginner mistake is placing the ProphetX bet in the right market but on the same outcome as the sportsbook bet, or on the right outcome but in the wrong market. Always check both the market and the selection before confirming.

Placing Your Bet
Once you've opened the correct event and market, select the outcome you need to bet on — the opposite of your sportsbook bet and:
- Click on the Odds.
- Open the Bet Slip.
- Enter the amount of the Bet.
- Click on Confirm Trade.
Check that the bet is Filled
After placing a bet on ProphetX, you need to check that it has been Filled.
Your bet is Filled (matched) when another user takes the other side of your wager. Once filled, that part of your bet is locked: it cannot be changed or cashed out, and your position is active.

If your bet is still pending, it means no one has taken your offer yet, so you are not covered. A bet can also be partially filled: part of it matches right away and the rest stays pending in the market. You can cancel any pending part at any time, and the funds return to your balance.
This is very important for Matched Betting.
If your sportsbook bet is already placed but your ProphetX bet is still pending, your position is exposed. If the odds have moved, cancel the pending part, update the odds in the NinjaBet calculator, and place the bet again with the new numbers.
Before moving on, always check that your bet is fully Filled.
ProphetX Commission
ProphetX charges commission only on your net winnings. If your bet loses, you pay nothing. If you cancel a pending offer, you pay nothing.
The commission is 2%. For example, if you win $10 on ProphetX, the commission is $0.20 and you receive $9.80 of net profit.
The NinjaBet tools include commission in the calculation, so the stakes already account for it.
Common mistakes to avoid
The most common ProphetX mistakes are usually simple mistakes.
Do not bet on the wrong event or in the wrong market. Do not bet on the same outcome you bet at the sportsbook: on ProphetX you always cover the opposite outcome. Do not take odds that have moved since you calculated; if the price changed, update the NinjaBet calculator first. Do not leave an offer pending too close to kickoff, or the game may start while you are still uncovered. Do not forget commission. Do not guess stakes instead of using the NinjaBet tools.
Matched Betting is not difficult, but it requires precision. Most mistakes happen when users rush.
Final summary
ProphetX is useful because it lets you bet against other users at exchange odds, with no built-in vig.
To cover a sportsbook bet, you bet on the opposite outcome on ProphetX. One bet wins and the other loses, but the combined result is locked.
The most important concept to understand is that your risk on ProphetX is simply your stake, and commission is charged only on net winnings.
For Matched Betting, you should not guess the covering stake. Use the NinjaBet Dutcher or Calculator, copy the correct numbers, place the bet on ProphetX, and check that it is matched.
You are not trying to predict the game. You are using ProphetX to control the result.