Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 56,000 | 100% |
| 58,000 | 100% |
| 60,000 | 98% |
| 62,000 | 78% |
| 64,000 | 15% |
| 66,000 | 2% |
| 68,000 | 0% |
| 70,000 | 0% |
| 72,000 | 0% |
| 74,000 | 0% |
| 76,000 | 0% |
Market context
The market hinges on Bitcoin's Binance spot price at precisely noon ET on 16 August 2026, measured via the 1-minute candle close on BTC/USDT. At 100% implied probability, traders are pricing near-certainty that Bitcoin will trade above the specified threshold at that exact moment. This specificity—a single 60-second window on a particular exchange—differs materially from broader price forecasts, as Binance's 1m candles can diverge from other venues or longer timeframes due to order flow, latency, and local liquidity conditions.
Historical precedent suggests extreme confidence in Bitcoin's directional bias over multi-year horizons. Since 2020, Bitcoin has closed above $10,000 in roughly 95% of calendar days; even during the 2022 bear market, sub-$20,000 closes occurred in fewer than 20% of trading days. The current 100% probability reflects either an exceptionally high threshold relative to expected price discovery by August 2026, or consensus that Bitcoin's long-term trajectory makes any reasonable strike price a near-certain outcome. Comparable Polymarket contracts on Bitcoin price levels have historically shown that extreme probabilities (above 95%) tend to cluster around thresholds 15–25% above spot price at contract inception.
Traders monitoring this contract should track macroeconomic calendars through 2026, particularly Federal Reserve policy signals and inflation data, which historically drive Bitcoin volatility. Regulatory announcements—especially from the SEC regarding spot Bitcoin ETF approvals or restrictions—remain material catalysts. The settlement mechanism's reliance on Binance's specific 1m candle data also introduces exchange-specific risk; any Binance platform outages or data anomalies on 16 August could affect resolution, though Binance's operational track record suggests this remains a low-probability edge case.
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 Kalshi 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.
- 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%.
Trade Bitcoin above … on August 16? on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
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