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 |
|---|---|
| Game 2 Winner | 100% |
| O/U 2.5 Games | 100% |
| Odd/Even Total Kills | 100% |
| Both Teams Slay a Dragon | 100% |
| Odd/Even Total Kills | 100% |
| Both Teams Slay a Dragon | 90% |
| Both Teams Slay Baron Nashor | 10% |
| Both Teams Destroy Inhibitors | 10% |
| Odd/Even Total Kills | 10% |
| Both Teams Slay Baron Nashor | 1% |
| Both Teams Slay a Dragon | 1% |
| Both Teams Destroy Inhibitors | 1% |
| Any Player Quadra Kill | 1% |
| Any Player Penta Kill | 1% |
| Any Player Quadra Kill | 1% |
| Any Player Penta Kill | 1% |
| Both Teams Slay Baron Nashor | 1% |
| Both Teams Destroy Inhibitors | 1% |
| Any Player Quadra Kill | 1% |
| Any Player Penta Kill | 1% |
| Game 1 Winner | 0% |
| Match Winner | 0% |
| Game Handicap: T1.A (-1.5) vs KT Rolster Challengers (+1.5) | 0% |
Market context
KT Rolster Challengers face T1 Academy in a best-of-three fixture within the LCK Challengers League's Rounds 3–4 Challenge Group bracket, scheduled for 19 August 2026 at 01:00 ET. The match determines positioning within South Korea's secondary competitive League of Legends ecosystem, where academy rosters compete for developmental credibility and potential promotion pathways. Settlement occurs in USDC against the match outcome, with a 50–50 resolution triggered if cancellation or postponement beyond 19 September occurs.
The 0% implied probability reflects either a technical settlement lag or genuine uncertainty about fixture confirmation. Historical LCK Challengers League scheduling has proven reliable, with cancellations rare outside force majeure events. T1 Academy typically fields stronger rosters given T1's institutional resources, though KT Rolster's academy programme has produced competitive lineups. Comparable academy fixtures in 2024–2025 showed academy-level volatility; upsets occur at roughly 15–20% frequency when rosters rotate mid-season. The current probability assignment warrants recalibration once official team rosters and recent scrim results surface.
Traders should monitor LCK official announcements for final roster confirmations and any schedule adjustments tied to the broader Challengers League calendar. Recent player transfers between academy and main rosters—particularly if either organisation shifts key talent—materially affect match dynamics. Fixture confirmation typically arrives 72 hours before play; absence of such confirmation by 16 August would signal postponement risk. BTC and ETH macro conditions remain uncorrelated to esports settlement mechanics, though funding rate volatility on major exchanges may reflect broader crypto market sentiment affecting trader liquidity allocation across prediction 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
- 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.
- 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: KT Rolster Challengers vs T1 Academy (BO3) - LC… on BTC Prediction
Live order book, 0% fees, USDC settlement in seconds.
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