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 |
|---|---|
| Match Winner | 100% |
| Both Teams Slay a Dragon | 90% |
| Both Teams Slay Baron Nashor | 0% |
| Both Teams Destroy Inhibitors | 0% |
| Any Player Quadra Kill | 0% |
| Any Player Penta Kill | 0% |
| Odd/Even Total Kills | 0% |
Market context
KT Rolster and Dplus KIA will contest a League of Legends best-of-one match in the KeSPA Cup Group Stage on 21 July 2026 at 04:15 ET. The KeSPA Cup is South Korea's premier domestic esports tournament, drawing the region's strongest professional teams. Both organisations field rosters capable of competing at the highest level, though recent form and roster changes will determine the outcome. Settlement occurs in USDC against the match result, with the contract expiring at 14:55 UTC on the scheduled date.
Historical precedent suggests that 100% crowd-implied probability in esports matches typically reflects either a substantial skill gap or incomplete information about team composition and recent performance. KT Rolster and Dplus KIA have faced each other multiple times in LCK (League Championship Korea) play; reviewing their head-to-head record and recent playoff performances provides calibration for whether the current probability reflects genuine dominance or market mispricing. Cancellations or forfeits in KeSPA events remain rare, though scheduling conflicts or player availability issues have occasionally delayed Korean esports fixtures by several days.
Traders should monitor official KeSPA announcements regarding roster confirmations, any last-minute substitutions, and player health status in the week preceding the match. Patch notes for League of Legends released before 21 July may shift meta-game dynamics and favour particular team compositions. The settlement window's tight closure at 14:55 UTC leaves minimal buffer for match delays; any postponement beyond seven days triggers a 50-50 resolution regardless of eventual outcome, creating tail risk for positions held through the deadline.
Methodology
This page reads LoL: KT Rolster vs Dplus KIA (BO1) - KeSPA Cup Group Stage 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.
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.
- 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.
- 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.
- 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.
Trade LoL: KT Rolster vs Dplus KIA (BO1) - KeSPA Cup Group… on BTC Prediction
Live order book, 0% fees, USDC settlement in seconds.
Open live market →