Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Bot UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| ↑ 2,450 | 100% |
| ↓ 2,400 | 100% |
| ↑ 2,500 | 33% |
| ↑ 2,550 | 5% |
| ↑ 2,600 | 2% |
| ↓ 2,350 | 2% |
| ↑ 2,650 | 1% |
| ↓ 2,300 | 1% |
| ↓ 2,250 | 1% |
| ↑ 2,750 | 0% |
| ↑ 2,700 | 0% |
| ↓ 2,200 | 0% |
| ↓ 2,150 | 0% |
| ↓ 2,100 | 0% |
Market context
Ethereum has been trading in a sharp late-August range, with ETH moving from roughly $1,900 at the start of the month to above $2,400 in recent sessions, after an intraday spike near $2,300–$2,500 and a pullback into the low $2,400s.[1][7][12] For a market framed around whether a specific price prints by 23 August, that kind of move matters more than the spot level alone: programmatic traders usually watch the last few hours of the settlement window, then compare live exchange feeds, index methodology, and stop-trigger chains rather than relying on a single headline price.
Comparable cases show that ETH can cross and then lose round-number levels quickly, so the crowd-implied 0% YES looks less like a conviction view than a pricing artefact when the target sits far from the recent tape.[4][10][15] Similar bursts have been driven by short-lived flows, with the latest rally tied to a White House crypto briefing and broader institutional ETF interest, while the underlying market still showed day-to-day swings of several per cent.[2][3][14] That makes the historical read simple: when ETH is trending hard, conditional orders and bot logic can flip a market from apparently dead to live in a few sessions.
The immediate catalysts are macro policy headlines, ETF/staking developments, and any change in Ethereum’s upgrade calendar.[2][3][11] Recent coverage points to Fidelity seeking approval to add staking to its Ether ETF, Morgan Stanley filing for a staked ETH ETF, and the Ethereum Foundation shifting upgrade timing into Q3, all of which can alter flow expectations and volatility.[3][5][11] A hands-on trader would map those events against liquidity hours, set alerts around U.S. news windows, and watch whether the market holds above the prior breakout zone near $2,300 or fades back towards the $2,000 area.[2][4][10]
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Bot UK, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
UK Frequently Asked Questions
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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 What price will Ethereum hit on August 23? on Polymarket Bot UK
Live order book, 0% fees, USDC settlement in seconds.
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