Bitcoin Up or Down - August 20, 3AM ET

Platform comparison

Market context

This market settles on whether Bitcoin's price at 3AM ET on 20 August 2026 closes at or above its opening level on the Binance BTC/USDT pair during that specific one-hour candle. The resolution hinges on a five-hour window from market open to settlement finalisation, making this a short-duration volatility play rather than a directional bet. Traders using conditional order logic or time-weighted average price (TWAP) algorithms would flag this as a liquidity-dependent micro-event; Binance's spot market remains the reference point, so basis spreads between perpetuals and spot during Asian trading hours become relevant to execution strategy.

The 0% implied probability reflects either extreme illiquidity or a technical artefact of the platform's pricing mechanism rather than genuine market conviction. Historical one-hour candle resolution markets show that crowd probability often collapses toward extremes when settlement windows are narrow and participation sparse. Comparable hourly Bitcoin markets on established platforms typically see 40–60% YES probability distributions, suggesting this market's current state warrants scepticism about its calibration. Traders evaluating this through bot-based entry logic should account for the possibility of zero-liquidity conditions at settlement time.

No major Bitcoin announcements or regulatory filings are scheduled for August 2026 at present. The relevant catalyst framework centres on overnight Asian session volatility and any macroeconomic data releases in the preceding hours. Traders integrating this into algorithmic portfolios should monitor Binance's order book depth in the 02:00–04:00 ET window and cross-reference against perpetual funding rates, which often signal directional pressure during low-volume periods.

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%.