The bitcoin was originally conceived as an electronic decentralized system for capital transactions. Each node (user) has the same opportunities to get a reward when validating a collection of transactions (block). In the last years, this system has triggered a competitive struggle in which computing power is the most important variable for earning bitcoins. This involves the use of large computers farms spending physical and environmental resources, a struggle that benefits only the owner of the most powerful and efficient technology. This keynote examines different examples of artworks based on blockchain technology, in particularly how artistic practices are able to explore critically bitcoin mining processes. The objective is to connect aesthetic experiences, creative practices and artistic products analyzing four different spheres; technical, ideological, ecological, and economical.