In this paper. we use the blockchain technology to design a prototype to secure process data from a 3D-printer. Datastreams are gathered from various sources such as OPC UA servers and autonomous retrofit sensor nodes. This is followed by pre-processing for data reduction. https://www.nacrack.com/super-save-2001-2004-LEXUS-LS430-Sedan-Rear-Bumper-Cover-w-o-Park-Assist-Paint-Code-3P2-hot-choice/