Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 37°C | 100% |
| 28°C or below | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 38°C or higher | 0% |
Market context
Taipei’s hottest reading on 31 July will be set by the maximum observed at Taipei Songshan Airport Station, and the market resolves on the temperature band containing that single-day peak. With the current crowd-implied probability at 0% YES, the market is pricing an outcome that would require a late-day spike beyond the station’s already hot conditions; Focus Taiwan reported Taipei topping 36°C on 31 July, while July climatology commonly sits around the low-30s Celsius with occasional higher extremes.[1][11][16]
That 0% reading should be read against recent comparables rather than as a literal forecast of impossibility. Taipei has already produced severe heat in prior summers, including a city record of 39.7°C reported by Focus Taiwan in 2020, and travel-weather references place July highs near 33–35°C with historical records above 38°C or even 103°F in some datasets.[9][4][5][12] For a July 31 contract, the main question is not whether Taipei can get hot, but whether the airport station can post a higher late-afternoon maximum than the day’s earlier readings.
The practical catalysts are straightforward: updated Central Weather Administration advisories, hourly station observations, and whether cloud cover or convection limits peak heating after late morning. Accessibility is also shaped by market-law and compliance rules: under Germany’s GlüStV, online gambling-style products can face licensing and advertising restrictions, so German users may encounter geofencing or access limits; in the US, the CFTC’s reach means platforms can restrict US participation where a market is treated as a regulated derivatives product. A “no-KYC up to $1,500” policy usually means smaller accounts can trade without identity checks until cumulative activity crosses that threshold, which affects entry friction but not the settlement rules for this weather market.
Methodology
This overview of Highest temperature in Taipei 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
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Tax UK has a different geo footprint.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Polymarket Tax UK stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
- What happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Tax UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- 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).
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