Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
Market context
Bitcoin is trading into the May 22 expiry with the market still priced for no extreme move, and that matters because the contract settles on whether the print touches a given level before the window closes early on 23 May UTC. With the current crowd-implied probability at 0% YES, the book is effectively saying the live range is still above the relevant upside threshold and that a late squeeze would need fresh inflows rather than just noise. In practice, these end-of-window Bitcoin markets tend to be driven by spot access and funding conditions rather than broad long-term sentiment: when deposits are easy and cheap, turnover is deeper; when rails are slower or fee-heavy, participation thins and the book can stay anchored.
Comparable May forecasts have mostly centred on the same bands. 24/7 Wall St said earlier this month that Bitcoin was likely to trade between $75,000 and $85,000, with $82,228 — its 200-day moving average — the key resistance point. Changelly’s May projection put the average price around $81,512, with a range from about $78,466 to $84,718. Those ranges sit close to the levels traders have been watching on Polymarket, where the reported frontrunners for “What price will Bitcoin hit in May?” have included 80,000 and 75,000, suggesting the market has been treating the month as a test of whether BTC can hold or reclaim the low-80k area.
The main catalysts now are funding and on-ramp flow rather than a single macro release. Traders are watching whether exchanges and wallets keep deposit routes smooth through bank transfer rails such as SEPA, card-linked options such as Klarna, and faster stablecoin top-ups via USDC, because those routes directly affect how quickly sidelined capital can reach the book. Kraken’s latest forecast page, updated this week, still showed a May 22 reference around $77,425, while Binance’s model output was in the high-$76,000s, reinforcing that spot is clustered well below the resistance zone cited by technical commentators. If BTC can attract fresh cash through cheaper on-ramp channels into the settlement window, the odds of a late print near those upper levels rise; if not, the market is likely to remain range-bound.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.
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.
FAQ
- Where can I trade this market with the lowest fees?
- On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.
- 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.
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