Bitcoin Up or Down: What 8,615 Five-Minute Rounds Show

Quick answer. Bitcoin Up or Down is a short prediction round from Polymarket. You buy an Up or Down share on whether Bitcoin ends a short window at or above its starting price. A winning share pays $1, and the most you can lose is what you paid plus fees. In 8,615 five-minute rounds, Up won 49.4%: close to a coin flip.

Every five minutes, a new Bitcoin Up or Down window opens on Polymarket, around the clock. This guide covers how a round works, what a month of results shows, and what fees do to your odds.

How does a Bitcoin Up or Down round work?

Each round asks one question: will Bitcoin end the window at or above where it started? You buy Up or Down, and the winning side pays $1 a share.

• The window. Each round has a fixed window on the clock. The price at the start is the "price to beat".
• Two shares. Up wins if Bitcoin finishes at or above the price to beat. Otherwise Down wins, and the losing share pays $0.
• The price is a probability. An Up share at 60¢ means traders put Up at about 60%.
• You can leave early. Sell your shares before the window ends, if someone is buying.
• No leverage. It is a prediction share, not a perp or an option, so there is no margin and no liquidation (Blackboard docs).

Results come fast: a typical round resolved about 80 seconds after its window ended.

Read the rules before you buy, because the price source depends on the round's length. Rounds of five minutes, 15 minutes and four hours settle on the Chainlink BTC/USD TWAP (time-weighted average price) data stream. Only that feed counts, not your exchange's chart.

Hourly and daily rounds use Binance BTC/USDT candles instead. Up wins an exact tie, except in daily rounds, where a tie splits 50/50.

What did 30 days of Bitcoin 5-minute rounds show?

Up won 49.4% of 8,615 rounds: within normal chance of a coin flip. Day by day, the Up rate stayed within about six points of 50%.

!Up won 49.4% of 8,615 Bitcoin 5-minute rounds; its daily win rate moved between 43.8% and 54.5% around the 50% line

Rounds often end close to where they started. The typical one finished $38 away, and about one in six within $10.

Bitcoin's five-minute rounds are also the busiest Up or Down series by far, with nearly three-quarters of the volume. A typical round traded about $41,800.

Do streaks or early prices tell you anything?

No. In our data, past rounds did not predict the next one, and late prices were close to honest odds.

After three Ups in a row, the next round went Up 48.6% of the time. After three Downs, Down came again 49.9% of the time. Even the longest runs, 12 Ups and 11 Downs, were about what pure chance produces.

!After one to five Ups or Downs in a row, the next round repeated 47% to 51% of the time

At the open, Up almost always traded near 50¢. With two minutes left, fewer than one in ten rounds were still near it. By then the price tracked the result: shares near 80¢ won about 82% of the time.

!With two minutes left, the Up price tracked how often Up won: shares near 20¢ won 16%, near 50¢ won 48%, near 80¢ won 82%

Price and result differed by a few points either way, in a week when Down won a little more often than Up. One week is too short to call any gap a pattern. Buying a late favorite means paying close to its real odds, plus 1–2¢ a share in taker fees.

What do fees do to a 50¢ share?

With a market (taker) order, fees lift the win rate you need at 50¢ from 50% to 52.25%. A resting limit (maker) order that gets filled needs 50.25%.

• Polymarket's taker fee on crypto markets peaks at 1.75¢ a share, at a 50¢ price. Makers pay nothing (Polymarket fees).
• Blackboard's Prediction fee is 1.00% for taker orders and 0.50% for maker orders.

Say you spend $10 on Up at 50¢ with a market order. You pay $10.45 all-in. If Up wins, you gain $9.55; if it loses, you lose the full $10.45.

!A 50¢ Up share costs 52.25¢ with a market order and 50.25¢ as a filled resting limit order

Over 100 such rounds at a true 50%, fees cost about $45. A resting limit order cuts that, but it may not fill before the window closes.

What are the risks of trading Up or Down?

Your loss on a round is capped at what you paid plus fees, but you can lose all of it. Speed, settlement rules and where you live add more risk.

• Full loss. A losing share pays nothing, and fees are not refunded.
• Speed. Near the close, a market order can fill worse than the price you saw.
• Settlement source. A provisional closing price is not the result.
• Venue risk. Polymarket and its data sources create, run and resolve the rounds, not Blackboard.
• Where you live. Availability depends on your location. Blackboard's Terms of Service restrict prediction markets in some places, including the US and the UK. They also bar people in the European Economic Area from Up or Down. The app hides Prediction in some countries as well.
• Repetition. A new round starts every five minutes. Set a budget first.

How do you trade Up or Down on Blackboard?

Blackboard is a non-custodial trading terminal: it does not hold your funds or keys. Up or Down sits inside Prediction, and the same account trades Crypto and TradFi perps.

1. Sign in with email, Google, Apple, X, a passkey or a wallet. A wallet is created for you if you need one.
2. Fund Prediction. Deposit USDC, then use Transfer or Prediction's Add funds. Prediction trades in pUSD on Polygon.
3. Open Prediction, then Up or Down. Pick a coin and window, such as Bitcoin 5m. Bitcoin, Ethereum, Solana, XRP, Dogecoin and HYPE run in windows from five minutes to one day; not every coin has every window.
4. Read the round. Check the clock, the price to beat and the price source.
5. Choose Up or Down and an amount. Review the price, fees and expected shares. Set a limit price if you do not want to cross the spread.
6. After the close, the official result decides the payout. A displayed result is not credited cash: use the redeem action if offered.

Because one account holds both, a Down share can be a fixed-cost hedge for a short-term long. Our guide to hedging with prediction markets shows how. You can also read what an onchain trading terminal is.

Open Up or Down on Blackboard →

FAQ

Is Bitcoin Up or Down a coin flip? Close to it. In our 30-day sample, Up won 49.4% of 8,615 five-minute rounds, and earlier results did not predict the next one.

How much can I lose on a round? What you paid for your shares plus fees. A share pays $1 or $0, with no leverage or liquidation.

Which price settles a 5-minute Bitcoin round? The Chainlink BTC/USD TWAP data stream named in the market's rules. Up wins a tie. Hourly and daily rounds use Binance BTC/USDT candles.

Is Up or Down an option or a perp? No. It uses prediction shares that pay $1 or $0. There is no margin, funding or liquidation.

What fees apply to Polymarket Up or Down? Polymarket's crypto taker fee is 0.07 × price × (1 − price) per share: 1.75¢ at 50¢. Makers pay Polymarket nothing. Blackboard adds 1.00% on taker orders or 0.50% on maker orders.

How we measured this

• Rounds: every closed round of Polymarket's Bitcoin 5-minute series (series_slug=btc-up-or-down-5m) from the Gamma API events endpoint, read through Blackboard's public Polymarket proxy on November 12, 2026. Rounds start 00:00 UTC October 13 to 23:55 UTC November 11, 2026.
• Coverage: 8,615 of 8,640 scheduled rounds came back. The 25 missing ran 04:55–06:55 UTC on November 1, as US clocks went back an hour.
• Outcomes: outcomePrices, with start and final prices from priceToBeat and finalPrice. Every outcome matched its rule, with no exact ties. One round had no prices. Resolution time is closedTime minus the window's end.
• Volume: market volumeNum (573 rounds report none) and series volume24hr at 10:37 UTC November 12.
• Prices: the Up share's 1-minute CLOB prices-history for all 2,016 rounds starting November 5–11. The price at a minute is the last point at or before it. Up won 47.7% of rounds that week.
• Fees and rules: fees from Polymarket's and Blackboard's docs on November 12, 2026, without rebates. Settlement rules come from each market's description; the other coins we checked follow the same pattern.
• Limits: one coin, one window length, 30 days. A description of the past, not a signal.

Up price with two minutes left, against the result

Break-even win rate by price (market order)

24-hour volume by series (Nov 12, 2026, 10:37 UTC)

Sources

• Polymarket docs: fees
• Polymarket docs: resolution
• Polymarket API reference: list events
• Polymarket API reference: price history
• Chainlink: BTC/USD TWAP data stream
• Blackboard docs: prediction markets
• Blackboard docs: fees
• Blackboard docs: create an account
• Blackboard Terms of Service

Up or Down shares can lose their full purchase cost plus fees. Figures describe past rounds and a snapshot from November 12, 2026, and will change. This article is for education and is not investment advice.