The amount of coins which have been circulating available in the market and so are tradeable by the general public. It's similar to taking a look at shares available in the market (not held & locked by insiders, governments). Different dependencies: Besides the open up-ssl library referenced while in the https://forum-directory.com/listings12700705/the-basic-principles-of-%E9%9D%93%E5%8F%B7%E5%9C%B0%E5%9D%80%E7%94%9F%E6%88%90