Live Up/Down calls for Polymarket crypto markets: BTC, ETH, SOL, XRP, DOGE, BNB and HYPE across 5m, 15m, 1h, 4h and 1d windows. Server-side signal engine, append-only call history, Stripe subscriptions and a Pro API. Powers polycryptosignals.com.
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Updated
Sep 19, 2026