Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Market context
This market settles on whether Bitcoin's price on Binance's BTC/USDT pair closes at or above its opening level during the one-hour candle commencing 20 August 2026 at 3am Eastern Time. The resolution hinges on a single hourly bar's open and close values, making it sensitive to intraday volatility and order-book dynamics in the final minutes before 4am ET.
The 0% crowd probability reflects either extreme confidence in a downward move or, more likely, minimal trading activity on a specific hourly contract with a two-year settlement window. Historical hourly Bitcoin candles show roughly 50–52% close above open across major exchanges, suggesting such binary outcomes lack predictive edge without material catalysts. The extended settlement period—nearly 24 months—creates unusual basis risk; traders pricing this now face significant carry costs and counterparty exposure. Comparable one-hour directional markets on crypto spot pairs typically attract liquidity only near settlement, when actual price action becomes observable.
Regulatory accessibility affects participation here. The German GlüStV framework restricts retail derivatives trading on crypto; UK traders face FCA oversight of prediction markets themselves, though spot-price settlement on Binance data sidesteps direct derivatives classification. US CFTC jurisdiction over leveraged crypto products does not directly apply to this binary outcome market, though US persons using Binance face compliance questions unrelated to the market itself. Binance's no-KYC threshold of $1,500 daily withdrawal does not alter this market's settlement mechanics, though it influences which traders can execute hedges on the underlying exchange. The August 2026 date falls outside any announced regulatory milestones, removing near-term policy catalysts from consideration.
Methodology
This overview of Bitcoin Up or Down - August 20, 3AM ET reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
UK Frequently Asked Questions
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Tax UK has a different geo footprint.
- Is Polymarket regulated by the UKGC?
- No. Polymarket is not licensed by the UK Gambling Commission (UKGC). It is a decentralised prediction market operated under US regulation. UK traders can use it but do not benefit from UKGC dispute resolution or player protection requirements.
- What are the HMRC tax rules on Polymarket profits for UK traders?
- Polymarket profits are treated as cryptocurrency disposal events by HMRC. Each USDC settlement is a taxable event subject to Capital Gains Tax (CGT). For 2026/27, the CGT rate is 18% (basic rate) or 24% (higher rate). The annual CGT exemption is £3,000. Report via HMRC Self Assessment if your total crypto gains exceed £3,000 or proceeds exceed £50,000.
- Does Polymarket KYC apply to UK users?
- Yes. Polymarket requires KYC (Know Your Customer) verification for all users, including UK residents. You must provide a government-issued photo ID and a selfie. The process typically takes 5–10 minutes via their ID verification provider.
- What is the legal difference between Polymarket and Betfair Exchange for UK traders?
- Betfair Exchange is UKGC-licensed, meaning UK consumer protections apply and winnings are typically tax-free. Polymarket is not UKGC-licensed — it operates under decentralised blockchain rules. Profits from Polymarket are subject to HMRC CGT as crypto disposals. Choose based on your regulatory preference and tax situation.
Trade Bitcoin Up or Down - August 20, 3AM ET on Polymarket Tax UK
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