Ethereum above … on August 9?

Platform comparison

Market context

Ethereum has traded in a narrow band around **$1,910-$1,920** over the past day, with Yahoo Finance showing a close of **$1,919.06** on 8 August and other live trackers printing roughly **$1,914-$1,922** this morning. That leaves the Binance noon ET candle likely to be decided by ordinary intraday volatility rather than a large trend move, especially with the market already sitting close to the level implied by the market price itself.[1][2][3][15]

The 100% crowd-implied **Yes** probability is best read as a reflection of a threshold that is likely set well below spot, not as a strong conviction signal about direction. Recent reference points show ETH oscillating around the same general area: Binance-linked historical data put 8 August close near **$1.92K**, while forecasting pages for 9 August cluster around the low **$1.9K** area, which is consistent with a market that can clear a modest benchmark if it stays range-bound through midday ET.[5][16]

For the rest of the session, traders will be watching broad crypto risk appetite, any headlines on Ethereum network activity or ETF-related flows, and whether Bitcoin’s direction pulls the whole complex higher or lower. The key dependency is simple: because settlement uses Binance’s **ETH/USDT 1-minute candle at noon ET**, even a short-lived move around that specific minute can matter more than the wider day’s average price.[19][15]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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.

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%.