Transformation of the histhoric Thermenmuseum in Heerlen is one of the flag-ship projects of the EU Project Digital Deconstruction, aiming at deconstruction and high value reuse of materials that will be removed from the building to make way for a new structure. During the design process the building has been scanned with a drone and mobile scanners (by BIM-Y) to create a virtual twin. After scanning, the Reversible BIM tool (of E. Durmisevic, 4D architects) enabled a digital assessment of reversibility of the structure and reuse potential of its elements. The tool identified elements with high reuse potential. In the next stage these elements will be connected with a sales platform with help of Blockchain technology (of block Materials).