How are new coins available on exchanges ? Who decide to put these coins on exchange ? What are the steps to put a coin on an exchange ? Are they some decentralized exchange where to put any new coin ?
Thanks for your contributions
As already mentioned in the answers here, each exchanger provides its own conditions to list new coins. Livecoin for example requireres a few thousend dollar and a solid prooves the seriousity to the ICOs. Yobit, as I remember, has the condition, that your project is already published on bitcointalk, novaexchange has a voting system for coin implementation. Each exchanger, who supports the implementation of new coins, has a section, where you get all needed conditions for offering your coin.