Digital certificates are used to verify the authenticity and integrity of digital files, such as documents, images, and videos. However, traditional digital certificates are vulnerable to tampering and forgery.

Blockchain technology can be used to create digital certificates that are secure and tamper-proof. For example, a digital certificate can be created on a blockchain that records the hash of the file and its owner.

This information is then verified and stored on the blockchain, making it impossible to change or forge the certificate.

Blockchain-based digital certificates can be used in a variety of applications, such as in digital voting, supply chain management, and intellectual property management.