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Home/Crypto/Bitcoin Up or Down on August 21?
PolymarketCryptoUpdated 6m ago

Bitcoin Up or Down on August 21?

Market probability
96.5%
+24 percentage points
over 24 hours72.5% → 96.5%
Less than a day until the event deadline
Deadline: August 21, 2026 at 12:00 PM ET

A repricing with partial backing — read the new probability with some caution.

The pricing has partial support: healthy trading volume and market depth, a tight spread. The probability moved another 2 points in the past hour — the market is still repricing.

How credible was the move?

Three separate questions — a move can be genuine while the latest price is still settling. Methodology →

Move validity

Is the move backed by real trading and depth?

Moderate

The pricing has partial support: healthy trading volume and market depth, a tight spread.

Consensus stability

Has the market settled at the new probability?

Unsettled

The probability moved another 2 points in the past hour — the market is still repricing.

Contract clarity

Will the rules resolve without ambiguity?

High

The resolution rules are relatively specific, with a named source and a defined deadline.

Recent trade activity$26.4K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

This market will resolve to "Up" if the "Close" price for the Binance 1 minute candle for BTC/USDT Aug 20 '26 12:00 in the ET timezone (noon) is lower than the final "Close" price for the Aug 21 '26 12:00 ET candle. This market will resolve to "Down" if the "Close" price for the Binance 1 minute candle for BTC/USDT Aug 20 '26 12:00 in the ET timezone (noon) is higher than the final "Close" price for the Aug 21 '26 12…

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

This market will resolve to "Up" if the "Close" price for the Binance 1 minute candle for BTC/USDT Aug 20 '26 12:00 in the ET timezone (noon) is lower than the final "Close" price for the Aug 21 '26 12:00 ET candle. This market will resolve to "Down" if the "Close" price for the Binance 1 minute candle for BTC/USDT Aug 20 '26 12:00 in the ET timezone (noon) is higher than the final "Close" price for the Aug 21 '26 12:00 ET candle. If the final "Close" price for both of these candles is exactly equal on Binance, this market will resolve 50-50. The resolution source for this market is Binance, specifically the BTC/USDT "Close" prices currently available at https://www.binance.com/en/trade/BTC_USDT with "1m" and "Candles" selected on the top bar. Please note that this market is about the price according to Binance BTC/USDT, not according to other exchanges or trading pairs.

Resolution source: binance.com

Why the odds moved

The probability rose 24.0 percentage points over the last 24 hours (72.5% → 96.5%).

No verified catalyst has been linked to this move yet. ProbCast does not attribute moves to news without evidence connecting the timing of a specific report to the repricing.

What could move this market next?

  • The market's deadline arrivesAugust 21, 2026 at 12:00 PM ET

    The contract must resolve based on what has happened by this date.

  • Confirmation at the resolution source (binance.com)

    The rules name this source as the basis for settlement.

Derived from the contract's own mechanics as of Aug 21, 1:25 AM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: medium · expected error ±24 pts.

Reacting to newsLegacy movement classifier: noisy

What's happening

high classifier confidence
Reacting to news

The price is actively repricing on real volume. The number is still moving — don't treat the latest print as settled consensus yet.

Change (pts)1H+2.06H+24.024H+24.07D+24.0
Score breakdown — Movement, Liquidity & Trust

ProbCast Trust Score

28/ 100 · Low

Weakly supported. Treat this number skeptically. Main caveat: expiring soon.

ProbCast measures how reliable this market probability appears — not what to trade.

Movement100

Magnitude of recent probability change

Liquidity80

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ProbCast — Odds Reliability

Know whether prediction-market odds can be trusted. ProbCast analyzes liquidity, market activity, spreads, and price movement to help distinguish meaningful repricing from thin-market noise.

Questions? Chat with us on Telegram
TodayTop MoversEventsAll MarketsWhat ChangedVenue DivergencePolymarket vs KalshiMethodologyCoverageMeta's ArenaWatchlistTerms of UsePrivacyCrypto
  • Probability moved 24.0 pts in ≤6h on adequate liquidity
  • Flow one-directional across 78 participants (broad, not a single order)

Read the latest price with caution; conditions make it an unreliable summary right now.

More details — reliability score, dynamics, durability
Reliability score
10Low
Where the price path tends to go next51 observed
  • Trend continuation47%
  • News repricing30%
  • Choppy / mean-reverting17%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityMedium· half-life <1h
PredictabilityStable

Secondary read: leaning toward Resolving soon.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Market data

24h volume

$124.5K

Liquidity

$60.3K

Total volume

$125K

Category
Crypto
Venue
Polymarket
Open interest
—
Spread
1.0 pts
Best bid
96.0%
Best ask
97.0%
7-day range
66.5% – 96.5%
Resolves
Aug 21, 2026
Resolution
binance.com

Depth of the order book and volume

Trust breakdown

28/100 · Low

Weakly supported. Treat this number skeptically. Main caveat: expiring soon.

  • Liquidity anchor+56
  • Price steadiness+0
  • Expiring soon-10
  • Limited history-8
  • Big move, weak support-10
Trust score28 / 100
How these scores work →
View on Polymarket

ProbCast provides prediction-market data and analytics for informational purposes only. Not financial, trading, betting, investment, legal, or tax advice. Market-implied probabilities can be wrong, illiquid, manipulated, or affected by ambiguous resolution rules.

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ProbCast provides prediction-market data and analytics for informational purposes only. Not financial, trading, betting, investment, legal, or tax advice. ProbCast is not a betting platform, exchange, or broker and does not provide buy or sell recommendations. Intended for users 18+; availability of prediction-market activity varies by jurisdiction. Venue data is aggregated from third parties and may be delayed or inaccurate. See our Terms of Use.

Market-implied probabilities can be wrong, illiquid, manipulated, or affected by ambiguous resolution rules.

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