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 |
|---|---|
| Prague 2: Chun-Hsin Tseng vs Hynek Barton | 100% |
| Completed Match | 100% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set 1 Winner | 100% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set 2 Winner | 100% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set Handicap +/-1.5 | 100% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set 1 O/U 8.5 | 100% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set 1 O/U 9.5 | 100% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Total Sets: O/U 2.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set 2 O/U 8.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Match O/U 21.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Match O/U 22.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set 2 O/U 9.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set Handicap +/-1.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set 1 O/U 10.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Match O/U 23.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Hynek Barton Set 2 O/U 10.5 | 0% |
Market context
Chun-Hsin Tseng, the Taiwanese qualifier ranked outside the top 100, faces Czech domestic player Hynek Barton in the Prague 2 ATP Challenger event scheduled for 17 August 2026. The match represents a qualifying-round or early-draw encounter on the secondary circuit, where Tseng has competed sporadically across lower-tier events whilst building ranking points. Barton, competing on home soil, typically features in regional Challenger draws and benefits from crowd support and familiarity with local court conditions.
The 100% implied probability reflects the structural certainty embedded in on-chain settlement mechanics rather than overwhelming confidence in either player's form. Comparable Challenger-level matches on prediction markets historically show similar crowding when one participant holds domestic advantage or when the draw structure heavily favours a particular outcome. The settlement window extends to 24 August 2026, providing an eight-day buffer beyond the scheduled date—sufficient for rescheduling due to weather or injury without triggering the 50-50 tie resolution clause. Traders should monitor ATP Challenger circuit updates and entry lists from the Prague 2 organisers, as late withdrawals or draw changes remain common at this tier.
Key catalysts include official confirmation of the draw bracket, any injury reports filed with the ATP, and weather forecasts for Prague in mid-August. USDC settlement on btc-prediction.bet will execute once the ATP publishes final results. The current probability leaves minimal arbitrage opportunity; material movement would require either player's withdrawal announcement or significant ranking shifts that alter perceived competitive balance before match day.
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.
- 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.
- 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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