Bitcoin Up or Down - May 25, 1:05PM-1:10PM ET

Platform comparison

Market context

Bitcoin's price movement will be measured over a five-minute window on 25 May 2026, from 1:05 PM to 1:10 PM Eastern Time, using Chainlink's BTC/USD oracle feed as the settlement source. The market requires the closing price at 1:10 PM ET to match or exceed the opening price at 1:05 PM ET for an "Up" resolution. Chainlink's data stream aggregates multiple exchange sources with a weighted methodology, introducing a slight lag relative to spot markets but providing tamper-resistant pricing for on-chain contracts.

Five-minute price windows historically exhibit low predictability in Bitcoin markets, particularly outside major news events or scheduled announcements. Intraday volatility clustering around US market opens and European closes typically generates larger moves, though a 1:05 PM ET timestamp falls during mid-afternoon US trading when volume and directional conviction often diminish. The 0% crowd probability suggests traders view this interval as essentially a coin flip, consistent with microstructure studies showing minimal autocorrelation in sub-ten-minute Bitcoin returns.

Catalysts during this window remain sparse unless scheduled economic data or Federal Reserve communications occur on 25 May. Funding rates on major derivatives exchanges and spot-futures basis spreads would signal directional positioning ahead of the interval, whilst whale transaction flows on-chain could presage volatility if large USDC transfers move between exchanges. Traders should monitor Glassnode's exchange inflow metrics and CME futures order books in the preceding hour for any accumulation patterns that might compress into this narrow window.

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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'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.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.