We would like to share the idea of the project from the field of 3D printing: http://print-it.xyz/about. We take a responsible approach to the project at the earliest stage, so that the future product is really useful and takes into account the needs of potential users.  Therefore, we will be very grateful for the feedback and constructive criticism. It would be great to hear the opinion of both future ordinary service consumers and specialists in the field of blockchain and 3D printing. Probably, our concept contains some blind spots or does not reflect some things, so we would be grateful if you point at them. Thanks in advance for the patience of those who read the concept to the end and find the time to comment!