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 → |
Market context
Ethereum’s noon ET Binance close on 4 August 2026 is being measured against the noon ET close on 5 August, so the market is really a one-day directional check rather than a broad “end-of-week” view. With the crowd at 100% **YES**, the price is already being treated as if the later candle should finish below the earlier one, which matters for anyone wiring this up into a bot, conditional order, or copy-trading rule: the key input is the exact Binance close at 12:00 ET on each day, not a spot midpoint or a futures mark.
Recent trading has been mixed to weaker. Ethereum was quoted around $1,739 on Investing.com, with a day range of $1,713.95 to $1,783.97[1], while TradingView’s August 2026 ETH futures page described Ether futures as in a downtrend, with price around 1,866 and the Supertrend level just above a breakout area near 1,851[2]. That combination is consistent with a market that can drift lower without needing a large catalyst, but it also leaves room for a sharp intraday reversal if liquidity improves. For historical framing, short-dated ETH direction markets often hinge more on whether support holds into the reference window than on the absolute level itself, especially when implied probability has become one-sided.
For catalysts, the main things to watch are any protocol, ETF, or macro headlines that land before the two noon ET marks, plus any schedule-dependent flows that can affect crypto risk appetite during US hours. Spot ETF flow reports have recently remained a live driver of ETH sentiment, with CryptoRank noting a third consecutive positive week and $18.39m of net inflows in a late-July update[14]. In practice, a programmatic trader would monitor Binance 1-minute candles around noon ET, feed in volatility and order-book depth, and avoid assuming that a favourable trend on higher timeframes will persist through the exact settlement window.
Methodology
We track Ethereum Up or Down on August 5? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
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.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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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