We were invited in February to the BIM Master of ESTP to discuss with the students the potential contribution of Blockchain to the BIM, and our solution BIMCHAIN.io. A session scheduled for one hour which finally stretched over two as the hearing was so sharp ! Discussions of various types, on the granularity of data and the ability of software to manage objects, the maturity of the administration in term of dematerialization. But also Ethereum killers, ICOs, transaction price calculations, ecological impact of Proof of Work … Intense ! Thank you Kevin for the invitation and to all for this moment.