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@@ -315,6 +315,7 @@ Curated collection of blockchain & cryptocurrency links.
 * [CoinMarketCap](https://coinmarketcap.com/api/) - Powerful JSON API covering 1000+ coins. Limit: 1 request per 6 sec.
 * [CoinCap](https://docs.coincap.io/) - Simple and informative. Lots of altcoins. History data. No limits.
 * [ChangeNOW](https://changenow.io/api/docs) - Easy integration of the cryptocurrency exchange. Limitless and fast coin swaps free of custody.
+* [ProofBets](https://proofbets.com) - Data-driven crypto casino reviews with on-chain verification, prediction market fee comparison (Polymarket, Kalshi, Azuro), and a free 16-endpoint API
 
 ## Other
 * [Bitpay](https://bitpay.com/) - Use BitPay's retail, ecommerce, billing, and donation tools to accept payments.