Is my personal data safe on the blockchain?
Academic records of the certificate and personal data are not published on the blockchain. A hash is generated from the certificate and is used to prove that the certificate is legitimate. The process of computing the hash from the certificate is not reversible. Since the hash is the only information published into the blockchain, no personal information can be obtained from content on the blockchain.
Why is OpenCerts backed by blockchain technology?
Using blockchain, we can greatly reduce the barrier to entry of publishing cryptographically protected educational credentials, as compared to currently existing costly proprietary software. In addition, a public blockchain is owned and maintained by the community and is easily accessible by anyone. As a result, there is no need to run or maintain services to verify OpenCerts.
Why use the Ethereum blockchain?
Ethereum is the blockchain network with the largest developer base, as well as having a large number of participants securing the network.
How do I send my OpenCerts certificate to someone?
You may use the share button that is visible when you view your certificate, or you can simply email the OpenCerts file to them.
Why can't I print the certificate?
Printing the certificate discards all the advanced cryptographic protections we have built into OpenCerts, hence printed certificates are not to be considered authentic.
What happens if I modify the OpenCerts file?
The modified certificate will fail validation and show up as having been tampered with.