Using the ThingSpeak API to make a GET request to Coindesk for the cuerrent BTC price which returns a JSON string that is parsed by ThingSpeak. Then the ESP8266 makes a GET request to the ThingSpeak API for the parsed data.
Using the ThingSpeak API to make a GET request to Coindesk for the cuerrent BTC price which returns a JSON string that is parsed by ThingSpeak. Then the ESP8266 makes a GET request to the ThingSpeak API for the parsed data.