Bitcoin Up or Down - August 20, 7AM ET

Platform comparison

Market context

This market settles on whether Bitcoin's price at 12:00 UTC on 20 August 2026 exceeds its price at 11:00 UTC that same day, using the BTC/USDT 1-hour candle from Binance. The 0% implied probability reflects either extreme illiquidity or a technical issue with market setup, as single-hour directional moves on major pairs typically carry measurable uncertainty. For traders building conditional order logic or backtesting bot strategies, this represents a straightforward binary outcome tied to a specific exchange's published OHLC data—the kind of granular event that automated systems often use as a component in larger trading workflows rather than as a standalone position.

Historical hourly Bitcoin moves show median absolute changes between 0.3% and 0.8% depending on market regime, meaning upside and downside outcomes both occur with regularity across comparable periods. The current 0% probability is inconsistent with this volatility profile and suggests either no active market participants or a display error; traders evaluating this as a calibration tool should note that genuine 50/50 hourly moves are common enough that a market reflecting genuine uncertainty would typically show odds closer to 45–55% range.

No scheduled macroeconomic releases or exchange maintenance windows are publicly flagged for that specific hour in August 2026. Traders implementing automated monitoring would need to track real-time Binance API feeds and account for potential flash volatility around US market open (13:30 UTC) if the settlement hour falls within that window, though the exact date's trading context remains unknowable from current vantage. The market's primary utility lies in testing order-execution infrastructure against a defined, verifiable settlement source rather than in directional conviction.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Review UK, which mirrors the Polymarket order book directly.

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.

UK Frequently Asked Questions

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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.