How a tokenized design passport could work
A production-ready system would hash the file and important metadata while storing the actual design in an appropriate private or content-addressed location. The public record could reference the creator, version, license, authorized quantity and royalty terms. A printer could then produce a signed build record linked to that passport.
Privacy and security: Do not place confidential CAD files, regulated medical data, export-controlled designs or trade secrets directly on a public blockchain.