Bitcoin price on August 18?

Platform comparison

Market context

Bitcoin's noon ET price on 18 August 2026 will settle against Binance's 1-minute candle close for BTC/USDT, with the market currently pricing zero probability of any outcome occurring. This reflects either extreme uncertainty about whether Binance data will be accessible at settlement or a technical issue with how the market has been configured on Polymarket's Polygon infrastructure. The USDC collateral backing conditional tokens here sits idle, suggesting traders have largely avoided this contract despite its two-year timeframe.

Historical Bitcoin volatility offers limited guidance for predicting a specific noon-hour close nearly two years forward. Daily price swings of 5–10% remain routine during periods of regulatory uncertainty or macroeconomic shifts, whilst multi-month trends have ranged from sustained rallies exceeding 100% to drawdowns of 60% or more. The 2024–2025 period saw Bitcoin oscillate between $40,000 and $70,000 depending on Federal Reserve policy signals and institutional adoption announcements, establishing that no single price bracket commands overwhelming probability across such extended horizons.

Traders monitoring this contract should track scheduled events likely to influence Bitcoin's trajectory: US monetary policy decisions, spot Bitcoin ETF flows, and any major regulatory announcements from the SEC or international bodies. The halving cycle—with Bitcoin's next reduction in mining rewards occurring in April 2028—sits beyond this market's settlement date but shapes longer-term sentiment. Binance's operational status itself represents an underappreciated dependency; any exchange outage or delisting would prevent resolution entirely, a risk that may explain the current zero probability pricing.

Methodology

We track Bitcoin price on August 18? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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 Polymarket Alternative UK. 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.

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%.