Bitcoin above … on August 20?

Platform comparison

Market context

This market tests whether Bitcoin's Binance spot price (BTC/USDT) will close above a specified threshold at noon Eastern Time on 20 August 2026. The resolution hinges on a single 1-minute candle's closing price at that precise moment, making this a narrow technical bet rather than a broader directional call. The 100% crowd-implied probability suggests traders view the threshold as either trivially low or the market lacks sufficient liquidity to reflect genuine uncertainty.

Bitcoin's intraday volatility at specific timestamps has historically ranged between 2–5% on typical trading days, though flash moves during news releases or options expiry windows can exceed 10%. August 2026 sits roughly 18 months forward, placing this contract well beyond most institutional price targets and analyst consensus ranges. Previous Polymarket contracts settling on single-candle closes have shown that crowd probabilities near 100% often reflect either a price floor so low it's effectively certain to be breached, or sparse participation that fails to attract contrarian liquidity. Comparing this to Kalshi's Bitcoin contracts, which typically offer tighter spreads on monthly settlement windows, the extreme confidence here warrants scrutiny of the actual threshold value.

Traders should monitor macroeconomic announcements scheduled for mid-August 2026—particularly US inflation data, Federal Reserve communications, and any major regulatory developments affecting spot Bitcoin trading. Binance's operational status and any technical incidents on the settlement date could theoretically affect the candle's integrity, though such disruptions are rare. The absence of major catalyst clustering around that specific date, combined with the market's distance from present day, suggests the probability reflects the threshold's absolute level rather than informed forecasting.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.