Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
64% | 36% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
64% | 36% | 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 |
|---|---|
| First Blood in Game 2? | 64% |
| First Blood in Game 1? | 64% |
| Total Kills Over/Under 27.5 in Game 2? | 57% |
| Total Kills Over/Under 27.5 in Game 1? | 53% |
| 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% |
| 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% |
| 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% |
| Game Handicap: LOS (-1.5) vs Vivo Keyd Stars (+1.5) | 47% |
| O/U 2.5 Games | 42% |
| Game 2 Winner | 33% |
| Game 1 Winner | 32% |
| Match Winner | 28% |
Market context
Vivo Keyd Stars face LOS in a League of Legends Championship Series Brazil (CBLOL) regular season best-of-three match scheduled for 15 August at 2:00PM ET. The market implies a 32% probability of Vivo Keyd Stars victory, valuing LOS as the favoured side. Settlement occurs in USDC on the btc-prediction.bet platform, with resolution tied to match completion by 16 August 00:00 UTC; any cancellation, tie, or seven-day delay without a determined winner triggers 50-50 settlement.
CBLOL regular season outcomes have historically reflected substantial roster stability and mid-season form trajectories rather than single-match volatility. Vivo Keyd Stars' recent performance metrics and LOS's competitive standing within the Brazilian league structure should anchor baseline expectations. Teams with established playoff positioning tend to show consistent results in regular season fixtures, though upsets remain material when facing opponents with superior macro coordination or recent roster changes. Comparable BO3 fixtures in regional leagues suggest that 32% underdog probability typically reflects meaningful skill gaps rather than coin-flip scenarios.
Traders should monitor official CBLOL scheduling announcements for any fixture postponements or roster changes announced within 48 hours of match time. Recent league communications regarding broadcast schedules and player availability carry direct settlement implications. Funding conditions on major crypto exchanges remain tangential unless macro volatility triggers platform-wide disruptions affecting market liquidity; spot USDC rates remain stable, presenting no settlement friction. The resolution window's tight seven-day buffer means any technical delays warrant immediate attention to official league statements.
Methodology
This page reads LoL: Vivo Keyd Stars vs LOS (BO3) - CBLOL Regular Season 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.
- 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.
- 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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