Bitcoin Up or Down - August 20, 8AM ET

Platform comparison

Market context

Bitcoin's price movement during a single hourly candle on Binance's BTC/USDT pair on 20 August 2026 will determine this contract's settlement. The market currently prices YES at 100%, implying traders assess a closing price at or above the opening price as virtually certain. This extreme probability reflects the inherent difficulty in predicting intraday directional movement with precision, though the five-hour settlement window (8AM to 1PM ET) provides meaningful time for price discovery on what will likely be a standard trading day absent major news.

Historical hourly Bitcoin candles show roughly 50–52% close above open across extended periods, though this varies significantly by market regime and volatility conditions. The 100% YES pricing suggests either illiquidity in this particular contract, a technical artefact of Polymarket's pricing mechanism on low-volume pairs, or trader conviction that the specific hour in question carries structural bullish bias. Comparable one-hour resolution markets on Polymarket have occasionally displayed similarly extreme probabilities when trading volume remains thin, with actual outcomes frequently contradicting the crowd's stated confidence.

Traders monitoring this contract should track Bitcoin's overnight performance in the 24 hours preceding 8AM ET on 20 August, as momentum and volatility clustering often influence intraday candle direction. Regulatory announcements, Federal Reserve communications, or macroeconomic data releases scheduled near the settlement window could introduce sharp price movement. The USDC settlement on Polygon means traders should verify Binance's official candle data once finalised, as this remains the sole authoritative source for resolution.

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 Scam?, 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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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%.