Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
59% | 41% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
59% | 41% | 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 |
|---|---|
| Match Winner | 59% |
| Game 2 Winner | 56% |
| Game 1 Winner | 55% |
| Both Teams Slay Baron Nashor | 50% |
| Both Teams Slay a Dragon | 50% |
| Both Teams Destroy Inhibitors | 50% |
| Odd/Even Total Kills | 50% |
| Both Teams Slay Baron Nashor | 50% |
| Both Teams Slay a Dragon | 50% |
| Both Teams Destroy Inhibitors | 50% |
| Any Player Quadra Kill | 50% |
| Odd/Even Total Kills | 50% |
| Both Teams Slay Baron Nashor | 50% |
| Both Teams Slay a Dragon | 50% |
| Both Teams Destroy Inhibitors | 50% |
| Any Player Quadra Kill | 50% |
| Any Player Penta Kill | 50% |
| Odd/Even Total Kills | 50% |
| O/U 2.5 Games | 49% |
| Game Handicap: DK.C (-1.5) vs KT Rolster Challengers (+1.5) | 33% |
| Any Player Quadra Kill | 26% |
| Any Player Penta Kill | 8% |
| Any Player Penta Kill | 8% |
Market context
Dplus KIA Challengers will face KT Rolster Challengers in a best-of-three League of Legends match within the LCK Challengers League's Rounds 3-4 Challenge Group bracket on 17 August 2026. The fixture represents a mid-season encounter between two secondary rosters operating under major LCK organisations, where roster stability and scrim performance often diverge sharply from main-team trajectories. Settlement occurs at 14:00 UTC, with USDC settlement tied directly to match outcome confirmation via official LCK broadcast records.
Historical precedent from prior LCK Challengers seasons shows that secondary rosters exhibit higher volatility than their parent organisations' main squads, particularly when academy players rotate between tiers. Dplus KIA's challenger outfit has historically maintained competitive depth relative to peer academy teams, whilst KT Rolster's secondary roster has shown inconsistent form across similar competitive windows. The current 56% implied probability favouring Dplus KIA reflects moderate confidence rather than consensus, suggesting meaningful uncertainty persists regarding roster composition, recent scrim results, and meta alignment heading into this round.
Traders should monitor official LCK announcements regarding roster locks, any last-minute substitutions, or scheduling changes prior to the settlement window close. Recent patch deployments and champion pool shifts will influence team preparation timelines. On-chain funding rates for prediction contracts tied to LCK outcomes have historically spiked 48–72 hours before major fixtures as information asymmetries narrow; whale accumulation patterns on either side may signal institutional confidence in roster intelligence unavailable to retail markets.
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.
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%.
Trade LoL: Dplus KIA Challengers vs KT Rolster Challengers… on BTC Prediction
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