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 |
|---|---|
| O/U 0.5 | 100% |
| 1st Half O/U 0.5 | 100% |
| KFUM-Kameratene Oslo O/U 0.5 | 100% |
| KFUM-Kameratene Oslo 1st Half O/U 0.5 | 100% |
| O/U 1.5 | 66% |
| Both Teams to Score in Second Half | 51% |
| 2nd Half O/U 0.5 | 50% |
| 2nd Half O/U 1.5 | 50% |
| 2nd Half O/U 2.5 | 50% |
| Sandefjord Fotball 2nd Half O/U 0.5 | 50% |
| Sandefjord Fotball 2nd Half O/U 1.5 | 50% |
| KFUM-Kameratene Oslo 2nd Half O/U 0.5 | 50% |
| KFUM-Kameratene Oslo 2nd Half O/U 1.5 | 50% |
| KFUM-Kameratene Oslo O/U 1.5 | 44% |
| KFUM-Kameratene Oslo (-1.5) | 34% |
| Sandefjord Fotball O/U 0.5 | 34% |
| Sandefjord Fotball O/U 1.5 | 34% |
| Both Teams to Score | 33% |
| O/U 2.5 | 25% |
| KFUM-Kameratene Oslo O/U 2.5 | 13% |
| O/U 3.5 | 8% |
| KFUM-Kameratene Oslo (-2.5) | 6% |
| O/U 4.5 | 2% |
| Sandefjord Fotball (-1.5) | 1% |
| Sandefjord Fotball (-2.5) | 1% |
| Sandefjord Fotball O/U 2.5 | 1% |
| O/U 5.5 | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| Sandefjord Fotball 1st Half O/U 0.5 | 0% |
| Sandefjord Fotball 1st Half O/U 1.5 | 0% |
| KFUM-Kameratene Oslo 1st Half O/U 1.5 | 0% |
Market context
Sandefjord Fotball and KFUM-Kameratene Oslo are playing an Eliteserien league fixture, with the market’s **1% YES** implying traders see the listed “more markets” condition as very unlikely to resolve in the affirmative. Historical match data point to a relatively even-but-low-margin rivalry rather than a one-sided mismatch: Sandefjord have had the better head-to-head record across longer samples, while recent meeting reports show both a 2-0 Sandefjord win and a 3-1 KFUM win in 2025, which is the sort of mixed baseline that usually keeps derivative propositions priced close to floor unless the contract is tied to a specific, rare event.[8][9][15]
For traders, the main catalysts are not likely to be macro football sentiment but the on-chain mechanics around USDC settlement and any late information that changes the live probability of the underlying event before the 17:00 UTC close. In crypto terms, BTC and ETH moves matter mainly as a risk-liquidity overlay: when spot is firm and perp funding is stable, discretionary flow can sit in smaller sports markets for longer, but sharp moves or heavy whale withdrawals on major venues often pull attention away from low-liquidity contracts. The practical watchlist is team-sheet news, confirmed kick-off timing, and any late market repricing around lineups or weather, because a small number of orders can move a 1% market materially if the order book is thin.[3][5][16]
Methodology
This page reads Sandefjord Fotball vs. KFUM-Kameratene Oslo - More Markets 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.
UK Frequently Asked Questions
- 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.
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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