"比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00" is a 4-hour prediction market on Polymarket where traders buy and sell shares on whether Bitcoin's price will finish higher ("Up") or lower ("Down") than its opening price over the 4-hour window specified in the title. The current market probability is 75% for "涨." A price of 75% means the market collectively assigns a 75% chance to that outcome. Prices update in real-time as traders react to live Bitcoin price movements. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00" has generated $16.7K in total trading volume. Bitcoin Up or Down markets attract active traders reacting to live price movements in real time — this level of activity helps ensure the current Up/Down odds are informed by a deep pool of market participants. You can track live prices and place a trade directly on this page.

To trade on "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00," decide whether you believe Bitcoin's price will finish above or below the opening "Price to Beat" by 8:00AM ET. Buy "Up" if you think the price will rise, or "Down" if you think it will fall. Enter your amount and click "Trade." If your chosen outcome is correct at resolution, each share pays out $1.00. If incorrect, shares are worth $0. Because this market resolves in 4 hours, the window to exit your position before resolution is short — trade with that in mind.

The current probability for "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00" is 75% for "涨," meaning the Polymarket crowd currently assigns a 75% chance that Bitcoin's price will finish 涨 over this 4-hour window. These odds update in real-time as traders react to live Bitcoin price data. Over a 4-hour window, odds shift as broader price trends develop. Check back frequently or trade now before the window closes.

The "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00" market resolves based on whether Bitcoin's price at the end of the 4-hour window is greater than or equal to its price at the start of that window — if so, the outcome is "Up"; otherwise it is "Down." The resolution source is the Chainlink BTC/USD data stream. You can review the complete resolution criteria and data source in the "Rules" section on this page. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and data sources that govern how this market is settled.

Yes. You don't need to trade to stay informed. Each "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00" page shows the live "Price to Beat" (Bitcoin's opening reference price for this window), the current live Bitcoin price, and real-time Up/Down probabilities. Because each market window lasts 4 hours, individual pages resolve quickly — use the time-range navigation features at the top of the page to jump between windows and track how odds evolved across multiple intervals. You can also view the Order Book and Activity tab for a real-time feed of trade flow.

Polymarket odds are set by real traders putting real money behind their beliefs. With $16.7K traded on “比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00,” the Up/Down probabilities reflect the collective judgment of traders watching Bitcoin's live price in real time. For 4-hour markets like this one, the odds represent an instantaneous crowd consensus on Bitcoin's price momentum — most meaningful as the window approaches its close, when traders have the most current price information available. For the latest stats on Polymarket's overall prediction accuracy, visit the accuracy page on Polymarket.

To place your first trade on "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00," sign up for a free Polymarket account and fund it using crypto, a credit or debit card, or a bank transfer. Once your account is funded, return to this page — or navigate to the current active 4-hour window using the navigation bar at the top of the page — select "Buy Up" or "Buy Down," enter your amount, and click "Trade." If the window shown in the title has already closed, use the navigation bar to find the current live window. If you're new to prediction markets, click the "How it works" link at the top of any Polymarket page for a quick step-by-step walkthrough.

On Polymarket, the price of each outcome represents the market's implied probability. A price of 75¢ for "涨" in the "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00" market means traders collectively believe there is roughly a 75% chance that Bitcoin's price will finish 涨 over this 4-hour window. If you buy "涨" shares at 75¢ and Bitcoin finishes in that direction, you receive $1.00 per share — a profit of 25¢ per share. If Bitcoin moves the other way, those shares are worth $0. Over a 4-hour window, prices shift as broader trends and market sentiment develop.

The "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00" market is live and resolves at 8:00AM ET — approximately about 1 hour from now. Trading is open. The Up/Down odds will continue shifting in real time as Bitcoin's price moves and traders react. Once the window closes, the market resolves based on whether the final Chainlink BTC/USD price is above or below the opening Price to Beat.

The "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00" market has 153 comments where traders share their analysis and react to live Bitcoin price movements. Scroll down to the comments section to read what other participants think. You can also check the "Activity" tab for a real-time feed of trades on this window.

Polymarket is the world's largest prediction market, where you can stay informed and profit from your knowledge of real-world events. Traders buy and sell shares on outcomes for topics ranging from politics and elections to crypto, finance, sports, tech, and culture — including 4-hour Bitcoin direction markets like "比特币上涨或下跌-美国东部时间2月21日凌晨4:00 - 8:00." Prices reflect real-time, crowd-sourced probabilities backed by financial conviction, often providing faster and more accurate signals than polls, pundits, or traditional surveys.