Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
9% | 91% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
9% | 91% | 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 |
|---|---|
| September 30 | 9% |
| May 31 | 0% |
| July 31 | 0% |
Market context
Verkhnia Tersa sits in Zaporizhzhia Oblast's contested territory, roughly 100 kilometres south-west of the current Russian-held line near Melitopol. The specific intersection at 47.696500° N, 36.082206° E represents a minor settlement point rather than a major strategic objective; Russian forces would need to advance substantially through Ukrainian-held territory to reach it. As of late 2024, Russian advances in this sector have slowed considerably, with frontline movement measured in kilometres per month rather than the rapid territorial gains seen in 2022. The 0% crowd probability reflects the considerable distance between current Russian positions and this particular coordinate, alongside the settlement window extending to mid-2026—a timeframe that historically favours defensive consolidation over offensive breakthroughs in this theatre.
Comparable cases from the Donbas campaigns demonstrate that minor settlements often change hands during larger operational pushes rather than through isolated tactical efforts. Bakhmut's protracted capture took months despite Russian numerical advantages; Mariupol required weeks of urban warfare. Verkhnia Tersa lacks comparable strategic weight, suggesting any Russian capture would occur only as part of a broader Zaporizhzhia offensive—an operation that would require sustained logistical support and numerical superiority neither side currently possesses in this sector.
Traders should monitor ISW map updates fortnightly, particularly following Russian announcements of new offensive operations or Ukrainian counteroffensive declarations. Recent reporting from Reuters and the Financial Times has emphasised Russian focus on Donbas consolidation rather than Zaporizhzhia expansion. USDC settlement mechanics mean position holders should track funding rate movements on derivative exchanges; sustained low probability typically correlates with minimal leverage activity, though geopolitical escalation could rapidly shift on-chain positioning.
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.
- 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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