Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
63% | 37% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
63% | 37% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| >115m | 63% |
| 105-115m | 30% |
| 95-105m | 8% |
| 85-95m | 2% |
| <75m | 0% |
| 75-85m | 0% |
Market context
Christopher Nolan’s *The Odyssey* opens in North American theatres today, with domestic opening weekend gross (July 17–19) set to settle a prediction market on btc-prediction.bet. The crowd currently assigns 0% probability to any YES outcome, yet Polymarket data shows the frontrunner bracket “105–115m” at 38%, followed by “>115m” at 36%, indicating a sharp divergence between the two platforms’ implied probabilities [1].
Historical comparables frame this discrepancy: Nolan’s *Oppenheimer* opened to $80M domestically, while *Dune: Part Two* hit $81M, yet both surged post-opening due to PLF and IMAX demand [3][4]. *The Odyssey* already shows record IMAX presales and a tracking average near $118M, with ranges spanning $80M–$132M, suggesting the 0% YES figure may understate realistic outcomes [4][11]. If the film hits the $100M+ floor cited by multiple analysts, the market’s current pricing appears misaligned with pre-release data [2][3].
Traders should monitor final three-day box office figures from The Numbers once studio estimates are replaced by confirmed data on July 20 [2]. Key catalysts include Friday’s opening-day gross, weekend IMAX/PLF sell-through, and any post-opening social media momentum. Recent ticket sales show ~150K tickets sold in 24 hours ($3.3M), surpassing *Oppenheimer*’s opening pace and securing a $100M+ domestic floor [8]. Settlement uses USDC, with contract value potentially tied to BTC/ETH macro flows if whale activity shifts during the settlement window.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
- Which crypto markets exist on Polymarket?
- Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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