Our solution for Data Trust is based on SSI (Self-Sovereign-Identity) and Hyperledger Indy
The foundation is the Hyperledger Indy Blockchain
The Controller implementations for the roles Issuer, Holder and Verifier simplify the creation and verification of Data Certificates for geospatial data products.
The Trusted Tea and Coffee Pot implementation illustrates the power of Data Certificates. Replacing the example Tea and Coffee Pot with a geospatial process like Ortho-Rectification or Reprojection makes the solution fit for purpose in the geospatial world easily.
The Trusted Tea and Coffee Pot is deployed within the OGC API Processes framework as part of a Secure Dimensions demonstration infrastructure.