Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Does Coinmarketcap read all trade history from the APIs of all exchanges and sums them up to calculate overall 24h volume? Or Does it retrieve it directly from specific coin's api?
It connects to the api of the exchange and returns the traded volume.
The volume of the exchange is the sum of all coin's volume in that exchange that is returned from the exchange API.
The volume of the coin is the sum of that coin's traded volume that is returned from all exchange's api.
Required, but never shown