How does the blockchain work? Which stages of evolution can be identified so far? And which kinds of application are possible thanks to the technology? These questions have been discussed at a workshop of mgm on May 19, 2017, in Hamburg. Both consultants and engineers exchanged their perspectives on the “database of trust”. mgm is currently conducting a study on the use of blockchain technology in the energy industry. Accompanying workshops are intended to stimulate the internal exchange of knowledge and enable a more differentiated view on the technology by bringing together experts from various fields.