Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Polymarket Legal in Canada) Pick polygram.ink (preferred broker) |
98% | 2% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
98% | 2% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 27°C | 98% |
| 23°C or below | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C or higher | 0% |
Market context
The event is the highest air temperature recorded at Chengdu Shuangliu International Airport on 31 July, with the market settling on the temperature band that contains that day’s observed maximum. Chengdu’s late-July climate is typically hot, humid and rain-prone, so the relevant question is usually whether afternoon heating can briefly outrun cloud cover and convective rain rather than whether the city stays warm overall.[3][11][20]
That is why a **0% YES** crowd price should be read cautiously: historical July averages cluster around 30–31°C, but the upper tail in Chengdu can reach the mid-to-high 30s, with one guide listing a July record high of 37.3°C and another showing 31 July as a day with an average high near 35.7°C in its July history table.[3][8] For a single-day airport observation, traders typically focus on whether a hot, clear spell develops in the early afternoon; comparable cases in Chengdu show that maxima can vary sharply with rain timing and cloud cover, even within the same month.[12][14]
From a market-access perspective, the regulatory framing matters. German users face the **GlüStV** regime, under which online gambling-style products can attract restrictions and platform access controls, while US persons may also encounter **CFTC** jurisdictional issues if the contract is treated as an event-based derivatives product rather than a simple bet. “No-KYC up to $1,500” generally means smaller deposits or withdrawals may be available without full identity verification, which lowers friction for casual access but does not remove geoblocking, sanctions screening or account limits tied to residency and compliance checks.
Methodology
This overview of Highest temperature in Chengdu on July 31? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Do I need to KYC for Is Polymarket Legal in Canada?
- Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Polymarket Legal in Canada would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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