Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| ↑ 72,000 | 100% |
| ↑ 71,000 | 100% |
| ↑ 70,000 | 100% |
| ↑ 73,000 | 47% |
| ↑ 74,000 | 25% |
| ↑ 75,000 | 11% |
| ↓ 69,000 | 6% |
| ↑ 76,000 | 5% |
| ↓ 68,000 | 4% |
| ↑ 77,000 | 1% |
| ↓ 67,000 | 1% |
| ↓ 66,000 | 1% |
| ↓ 65,000 | 0% |
| ↓ 64,000 | 0% |
| ↓ 63,000 | 0% |
| ↓ 62,000 | 0% |
Market context
Bitcoin's price movement on 20 August 2026 will determine settlement of this contract, with traders on Polymarket currently pricing a 1% probability that the asset will hit a specific threshold on that date. The market is denominated in USDC and settled via Polygon's conditional token architecture, meaning positions are held as ERC-20 tokens until the settlement window closes on 21 August 2026 at 04:00 UTC. The current pricing reflects either extreme confidence in a narrow price range or significant uncertainty about which price level the market is actually testing.
Historical volatility patterns suggest Bitcoin's single-day price moves rarely exceed 15–20% outside periods of acute market stress. During the 2021 bull run, daily swings of this magnitude occurred roughly once per quarter; in calmer markets, they're considerably rarer. The 1% probability baked into this contract implies either the specified price target is exceptionally far from current spot rates, or traders view the likelihood of such movement as genuinely remote. Comparable single-day price events—including the March 2020 liquidation cascade and the November 2021 peak—occurred during periods of recognised catalyst clustering rather than ordinary market conditions.
Traders monitoring this contract should track macroeconomic announcements scheduled for August 2026, particularly US inflation data and Federal Reserve communications, alongside any significant regulatory developments affecting cryptocurrency markets. Bitcoin's correlation with equity indices and Treasury yields has strengthened since 2023, making broader financial market volatility a material dependency. Exchange-traded fund flows and spot market liquidity conditions on major venues will also influence intraday price discovery on the settlement date itself.
Methodology
This page reviews What price will Bitcoin hit on August 20? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Alternative UK, which mirrors the Polymarket order book at 0% fees.
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.
- 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%.
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