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 |
|---|---|
| Tromsø IL (-1.5) | 100% |
| Tromsø IL (-2.5) | 100% |
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| O/U 3.5 | 100% |
| O/U 4.5 | 100% |
| O/U 5.5 | 100% |
| Both Teams to Score | 100% |
| Both Teams to Score in First Half | 100% |
| 1st Half O/U 0.5 | 100% |
| 1st Half O/U 1.5 | 100% |
| Aalesunds FK O/U 0.5 | 100% |
| Aalesunds FK O/U 1.5 | 100% |
| Tromsø IL O/U 0.5 | 100% |
| Tromsø IL O/U 1.5 | 100% |
| Tromsø IL O/U 2.5 | 100% |
| Aalesunds FK 1st Half O/U 0.5 | 100% |
| Tromsø IL 1st Half O/U 0.5 | 100% |
| Both Teams to Score in Second Half | 100% |
| 2nd Half O/U 0.5 | 100% |
| 2nd Half O/U 1.5 | 100% |
| 2nd Half O/U 2.5 | 100% |
| Aalesunds FK 2nd Half O/U 0.5 | 100% |
| Tromsø IL 2nd Half O/U 0.5 | 100% |
| Tromsø IL 2nd Half O/U 1.5 | 100% |
| Aalesunds FK (-1.5) | 0% |
| Aalesunds FK (-2.5) | 0% |
| 1st Half O/U 2.5 | 0% |
| Aalesunds FK O/U 2.5 | 0% |
| Aalesunds FK 1st Half O/U 1.5 | 0% |
| Tromsø IL 1st Half O/U 1.5 | 0% |
| Aalesunds FK 2nd Half O/U 1.5 | 0% |
Market context
Aalesunds FK meet Tromsø IL in an Eliteserien fixture that is scheduled for 2 August at 11:00 AM ET, with this market covering the *additional* outcome prompts around the game rather than the 1X2 result itself. The current crowd-implied probability of **0% YES** is therefore more a reflection of thin participation than a view on the match, especially in a low-liquidity on-chain market where late order flow can matter more than early positioning.
The match-up has already shown enough balance to make “more markets” credible: the sides drew 1-1 in May 2026, and the broader head-to-head record has been mixed rather than one-sided, with several draws and only a small aggregate gap in past meetings.[4][7][15][16] Independent previews for the same fixture leaned towards a relatively open game with goals on the board, while one market model still gave Tromsø only a slight edge, which is consistent with a market that can swing on specifics such as total goals, both-teams-to-score, or card/corner props rather than a clear favourite outcome.[13][14][20]
For traders, the main catalysts are line-up news, any late injury or rotation updates, and whether pre-match conditions point to a faster or more conservative game state. On-chain markets settled in USDC can also reprice quickly if broader crypto risk appetite shifts around the event window: if BTC and ETH strengthen, or if funding rates and spot flows turn risk-on, that can affect how aggressively participants deploy capital across prediction markets even when the underlying football thesis is unchanged.
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 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.
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- 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.
- 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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