Cryptocurrency development companies first need to prepare a B-Plan (Business Plan) which includes the project summary purpose of project benefits after project completion, amount of money to be raised and minimum amount of funds that is required by the company, for how long ICO campaign would run. After the campaign starts, their supporters and other people who are interested buy some crypto coins called as ‘cryptocurrency tokens’. For IPO’s these tokens acts as shares of company. And then people from these supporters buy the coins for the same reason. At the end of campaign, they measure it.