At the moment I found these in a public state, you should try.

HitBTC https://api.hitbtc.com/api/3/public/price/rate?from=BTC&to=USDT CEX https://cex.io/api/last_price/BTC/USD Binance https://api.binance.com/api/v3/ticker/price?symbol=BTCUSDT CoinStats https://api.coinstats.app/public/v1/coins/bitcoin FTX https://ftx.com/api/markets/btc/usdt Gemini https://api.gemini.com/v1/pricefeed/btcusd