Bitcoin price on August 18?

Platform comparison

Market context

Bitcoin's noon ET price on 18 August 2026 will be determined by the Binance BTC/USDT 1-minute candle close at that specific timestamp. The market settles to "No" if data is unavailable or unresolvable, making data integrity and exchange uptime critical variables for traders building conditional logic around this event. For programmatic approaches, this requires reliable API access to Binance's historical candle data with millisecond-level precision, since the resolution hinges on a single minute's closing value rather than daily aggregates.

The 0% implied probability reflects genuine uncertainty about Bitcoin's price trajectory across a two-year horizon, compounded by the specificity of settling on a single minute's data. Historical precedent shows that intraday volatility can exceed 2–3% within minutes during periods of macroeconomic announcements or exchange-driven liquidity events. Comparable single-point-in-time Bitcoin markets have typically seen probability distributions flatten considerably as settlement approaches, particularly when correlated assets (equities, commodities, central bank policy signals) exhibit directional conviction.

Traders monitoring this market should track Federal Reserve policy calendars, major cryptocurrency exchange maintenance windows, and regulatory announcements affecting Bitcoin custody or derivatives trading. Recent volatility clustering around US inflation data and geopolitical developments suggests that late summer 2026 catalysts—whether fiscal policy shifts or institutional adoption milestones—will drive material price movements. Building a bot to track Binance candle data in real time, with fallback sources for validation, remains essential given the binary settlement risk if primary data becomes inaccessible.

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 Bot UK, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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%.