Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
97% | 3% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Jack Antonoff | 97% |
| Selena Gomez | 97% |
| Brittany Mahomes | 97% |
| Patrick Mahomes | 96% |
| Este Haim | 96% |
| Danielle Haim | 95% |
| Alana Haim | 91% |
| Sabrina Carpenter | 90% |
| Lana Del Rey | 75% |
| Max Martin | 67% |
| Gracie Abrams | 49% |
| Phoebe Bridgers | 47% |
| Jared Goff | 5% |
| Blake Lively | 3% |
| Kanye West | 1% |
| Andrew Tate | 1% |
Market context
Taylor Swift and Travis Kelce have already tied the knot at Madison Square Garden on 3 July 2026, with photographic confirmation from a spokesperson and over 1,100 guests in attendance[1][4]. The market in question, which bets on whether specific named individuals attend this now-completed event, resolves to "No" if the named person was not physically present, as the wedding has already occurred and the guest list is effectively closed[2][9].
Historically, celebrity wedding attendance markets hinge on verified photographic evidence and the exclusion of high-profile absentees like Blake Lively and Ryan Reynolds, who were confirmed not to attend despite their closeness to the couple[3]. Comparable cases show that even when invitations are sent, tour schedules or personal disputes can prevent attendance, as seen with Harry Styles, whose tour commitments barred him from MSG despite receiving an invite[6]. With the event already settled and the crowd-implied probability at 1% YES, the market reflects the near-certainty that unlisted or absent figures will not qualify.
Traders should monitor official guest lists released by TMZ and Rolling Stone, which confirm attendees like Selena Gomez, the Haim sisters, and Zoë Kravitz, while noting exclusions[2][6]. Any new claims of attendance must be backed by video or photographic proof from the event, as virtual presence or invitation confirmations do not count[1]. With settlement ending in December 2026, the window is now purely for verifying post-event statements, but given the event's completion, the outcome is effectively fixed.
Methodology
This page reads Who will attend Taylor Swift and Travis Kelce's wedding? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
- Which crypto markets exist on Polymarket?
- Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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