The cert-tools repo contains rudimentary scripts to help create a Blockchain Certificate. These are simple, but very configurable, and include some sample data to get started. There are two components to creating certificates: creating templates and instantiating a batch. After running these scripts, you will have a Blockchain Certificate that is compliant with the standard schema.
Detailed information is in the cert-tools README.md.
Create certificate templates
Creates a certificate template populated with the settings you provide. This will not contain recipient-specific data; such fields will be populated with merge tags.
Instantiate certificate batch
Populates the certificate template with recipient data from a .csv file. It generates one certificate per recipient, which is unsigned and ready to go to the cert-issuer.