Does someone know how CoinMarketCap, in the present, accesses the "circulating supply" value?
In the first post they write:
public URL that displays the total supply (total mined so far).
That would mean that they don't run altcoin clients themselves but access to statistics provided, e.g., by block explorers.
My question:
- Do they need a full-fledged
web service providing e.g. JSON/XML data?
- Or are they OK with a web site where the value "circulating supply" appears, because they
web-scrape that sites?
- Or have they changed their policy and are running
altcoin clients now for every coin? (unlikely because that would need a lot of resources)?
I ask because there are tons of coins that are supported only by the block explorers without "API mode", but their supply is displayed correctly.