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ProphetX is a CFTC-registered sports exchange (ProphetX DCM and ProphetX DCO). It lists sports markets only.
ProphetX publishes no list of the states or countries it serves; we read its terms of use, its rulebook and its help centre. Its terms set a minimum age of 18, or the age of majority where you are if that is higher.
Until ProphetX publishes a list, we link ProphetX for US readers in the states where we link Kalshi’s contracts for the same kind of market, and never in the UK. That is our own interim rule, not one of its terms. Why we don’t link every venue everywhere.
ProphetX charges its fee on winnings. On our market cards each venue’s price sits beside every other venue’s for the same question. Buy at is the lowest price a seller will accept, Sell at is the best a buyer will pay, and Price is used where a venue publishes only one figure. A difference between venues is a price discrepancy, not guaranteed profit: fees, settlement rules and timing differ.
Compare its prices with the other venues on Compare, or visit ProphetX’s own site where we link it.
ProphetX is a CFTC-registered sports exchange (ProphetX DCM and ProphetX DCO). It lists sports markets only. ProphetX publishes no list of the states or countries it serves; we read its terms of use, its rulebook and its help centre. Its terms set a minimum age of 18, or the age of majority where you are if that is higher. This is what its own pages say, not legal advice.
ProphetX charges its fee on winnings. A difference between venues is a price discrepancy, not guaranteed profit: fees, settlement rules and timing differ.
Other venues we compare: Matchbook, Novig, Underdog, Polymarket US, Kalshi via Robinhood, Kalshi, polymarket.com and Betfair Exchange.
We last checked ProphetX’s own pages on 29 October 2026. 18+.
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