Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| NRFI | 100% |
| 1st 5 Innings O/U 2.5 | 100% |
| O/U 4.5 | 48% |
| 1st 5 Innings Spread -1.5 | 41% |
| O/U 5.5 | 39% |
| O/U 6.5 | 28% |
| Spread -2.5 | 24% |
| Spread -1.5 | 20% |
| O/U 7.5 | 20% |
| Baltimore Orioles vs. Houston Astros | 18% |
| Extra Innings | 16% |
| Spread -1.5 | 12% |
| O/U 8.5 | 12% |
| O/U 9.5 | 7% |
| O/U 10.5 | 5% |
| 1st 5 Innings Spread -1.5 | 0% |
| 1st 5 Innings Spread -2.5 | 0% |
| 1st 5 Innings Spread -2.5 | 0% |
| 1st 5 Innings O/U 3.5 | 0% |
| 1st 5 Innings O/U 4.5 | 0% |
| 1st 5 Innings O/U 5.5 | 0% |
| 1st 5 Innings O/U 6.5 | 0% |
| O/U 3.5 | 0% |
Market context
The Baltimore Orioles face the Houston Astros on 17 July at 8:10PM ET in a regular-season MLB matchup. The current crowd-implied probability of 18% for an Orioles victory reflects Houston's standing as clear favourites, consistent with their recent divisional performance and roster depth. Settlement occurs via USDC on btc-prediction.bet, with the market remaining open until the game concludes, should postponement occur before the 25 July deadline.
Historical context suggests the 18% probability aligns with typical moneyline odds for road underdogs facing AL West contenders. The Astros have maintained a winning record against Baltimore in recent seasons, and Houston's pitching rotation typically performs well in July matchups. Comparable markets on established sportsbooks price the Orioles at similar or slightly lower implied probability, indicating the crowd assessment reflects genuine competitive imbalance rather than mispricing.
Traders should monitor roster updates through 16 July, particularly injury reports affecting either team's starting pitcher or key position players. Recent form matters significantly: the Orioles' recent win-loss record and the Astros' performance in their preceding series will influence late-market movement. Weather conditions at Minute Maid Park—humidity and temperature affecting ball carry—merit attention given Houston's home-field advantage. Any significant line movement on major sportsbooks typically precedes on-chain probability shifts, so tracking ESPN and MLB official announcements through market close will capture material information before USDC settlement.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $147K.
Methodology
This page reads Baltimore Orioles vs. Houston Astros on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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 are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- 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.
- 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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