What APIs does cryptocurrency widgets use?
In the realm of cryptocurrency and finance, the utilization of APIs (Application Programming Interfaces) in cryptocurrency widgets is a crucial aspect. Could you elaborate on which specific APIs are commonly employed in these widgets? Understanding the technical underpinnings is essential for both developers seeking to integrate such widgets into their platforms and for users seeking to grasp the functionalities they offer. Additionally, are there any industry-standard APIs that are widely recognized and preferred in the cryptocurrency community? A comprehensive answer would be greatly appreciated in order to gain a deeper insight into this topic.