Blockchain & Bitcoin Conference is a cycle of industry-specific conferences dedicated to decentralized technologies. Smile-Expo has been holding such events in different cities for more than three years; offering a relevant and intense program each time. The demand for information on everything related to blockchain technology and cryptocurrencies is increasing. The following trends have been common for the industry since 2014:- cryptocurrency market capitalization has exceeded $100 billion and keeps growing;- blockchain is integrated in the governmental projects in a number of countries; including Russia;- cryptocurrencies are accepted for payments by large sales networks in Japan; the USA; and some other countries;- Internet users search for information on bitcoin and cryptocurrencies 30% more often in 2017 than in 2013.A growing number of developers and business representatives are getting interested in blockchain as a software development field and cryptocurrencies as an investment method. But many aspects of the industry remain complicated: the technical side; legislative regulation; financial issues; trends and prospects. Blockchain & Bitcoin Conferences are intended to provide comprehensive and objective information. Smile-Expo organizes them in various countries; in the cities with the largest audiences.