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 → |
Market context
Polymarket has this **Bitcoin Up or Down** contract priced at **100% YES**, which means the market is treating an up move in the relevant Chainlink BTC/USD print as essentially certain. On Polymarket, traders buy conditional tokens with USDC on Polygon, and the position settles from the Chainlink stream rather than from a spot exchange quote, so the exact minute-to-minute feed movement matters more than headlines about the broader crypto market.
That 100% level is extreme by historical standards for a five-minute direction market, where even very liquid Bitcoin windows can turn on a small baseline drift, a feed update, or a brief wick. At the moment, quoted BTC/USD prints across market data providers are clustered around the mid-$65,000s, with one live quote at $65,988 and another at $65,620, while a morning snapshot put Bitcoin at $65,658.67, suggesting the tape has been relatively stable but still moving enough that a narrow interval can resolve either way.[7][11][1]
For traders watching the last stretch, the main variables are not macro speeches but feed mechanics and short-horizon crypto volatility: Chainlink’s BTC/USD stream update timing, any exchange-led price jump during the window, and whether the start and end observations capture the same micro-move or two different ones. With the market already locked at 100% YES, even a brief downward snap in the referenced Chainlink data stream would matter more than the broader daily trend, and there is no need for a major scheduled announcement for the outcome to flip.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- 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 Kalshi 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.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
Trade Bitcoin Up or Down - July 23, 6:00AM-6:05AM ET on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
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