there are some checkpoints must confirm :
Must have to accessible blockchain explorer.
Must has to listed on coinmarketcap.com .
Must have to public source code.
It has to be available at official coin exchange
Must have to a public wallet.
https://cdn.steemitimages.com/DQmSxuhnREiXzZDbkVK3CUDFoeHta1QhN3fk1jqyGvQoGHa/bitcoin.jpg