Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Market context
Ethereum is trading in a narrow band around the low-$1,900s, so this contract is really a one-day direction bet rather than a broad macro call on the asset. At the time of the available readings, spot ETH was clustered around $1,915–$1,919 across several trackers, with a day range near $1,916 to $1,918 on Investing.com and a 24-hour change only slightly positive, which is consistent with a market that can drift either side of a flat line into the noon ET close[1][2][3]. By contrast, the crowd-implied **94% YES** looks much more decisive than the underlying spot tape; that is a meaningful gap, because the contract only needs the Aug. 9 noon ET Binance close to finish above the Aug. 8 noon ET close, not a large rally[1][2][15].
Comparable short-horizon ETH calls have often been driven more by trend persistence than by outright breakout moves, and current analyst-style forecasts are mixed rather than uniform. Binance’s own price-prediction page describes ETH as bearish on the four-hour chart while the 200-day moving average remains upward-sloping, a combination that fits a market with support overhead and a softer intraday bias[17]. Other forecasting pages are split too: CoinCodex’s model calls sentiment neutral, with more bullish than bearish technical indicators, while Changelly’s near-term table points to a modestly lower August 9 price than current spot[15][8].
For the next 24 hours, traders will mainly watch whether ETH can hold the $1,900 area and whether any exchange-traded-fund flow headlines or staking-policy developments shift risk appetite[2][17]. The relevant dependency here is simple: the settlement compares Binance’s noon ET close on Aug. 8 with the noon ET close on Aug. 9, so late-session volatility, exchange-specific tracking differences, and any weekend liquidity thinness can matter more than the broader day’s narrative[2][6].
Methodology
We track Ethereum Up or Down on August 9? 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
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.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
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