Bitcoin Up or Down - August 5, 10:55AM-11:00AM ET

Platform comparison

Market context

Polymarket is pricing this contract at **100% YES**, so traders are treating the Chainlink BTC/USD print over the 10:55AM-11:00AM ET window as a near-certainty to finish flat-to-higher on the interval. On Polymarket, that exposure is bought and sold in **USDC** on **Polygon**, with the final settlement determined by the market’s **conditional tokens** once the Chainlink stream is checked against the start and end prices. The key detail is that this is not a spot-exchange judgment on Bitcoin broadly; it resolves strictly on the Chainlink BTC/USD data feed named in the market rules.

For context, Bitcoin’s intraday moves can be large enough that a five-minute up-or-down contract often depends more on the exact timestamped feed path than on the broader session trend. On 5 August, major retail price trackers put BTC around the mid-$60,000s, with reports showing roughly $64,137 at 5:45 a.m. ET and $64,486.72 at 8:29 a.m. ET, indicating an upward bias in the day’s early trade.[1][2] That sort of backdrop helps explain why a 100% YES print can appear even when the wider crypto tape is still volatile: the market may simply be assuming that, over such a short window, the Chainlink tick is more likely to end at or above the opening print than below it.[1][2]

A trader watching this market should focus on anything that can move BTC/USD right on the minute: macro data, risk sentiment, and any crypto-specific headline that can spill into the benchmark feed used by Chainlink. Yahoo Finance noted that on 5 August investors were watching Hormuz negotiations and the jobs report, both of which can affect Bitcoin’s direction through broader risk appetite.[2] Because settlement depends on the exact Chainlink BTC/USD stream rather than an exchange average, even a brief spike or dip around the window matters more than the day’s headline move elsewhere.

Sources: 1 · 2 · 3 · 4 · 5

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 Alternative UK, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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%.