Used to create, issue, revoke, or validate certificates (or any other PDF file) on the public Bitcoin blockchain.
This project allows an institution to issue digital certificates. It creates pdf certificate files (or uses existing ones) and issues a hash representing those files into the Bitcoin network's blockchain. Now also supports Litecoin.
More information on creating certificates:
https://github.com/verifiable-pdfs/blockchain-certificates/blob/master/docs/create_certificates.md
More information on issuing existing certificates:
https://github.com/verifiable-pdfs/blockchain-certificates/blob/master/docs/issue_certificates.md
More information on the CRED Protocol and it's implementation:
https://github.com/verifiable-pdfs/blockchain-certificates/wiki