A Blockchain Notary is a service that uses blockchain technology to provide secure and immutable records of digital documents. This technology allows users to store and verify digital documents in a decentralized, secure manner. The notary service can be used to prove the authenticity of digital documents, such as contracts, agreements, and other types of documents. The blockchain notary also provides a permanent, public record of the documents, helping to prevent fraud, tampering, and other malicious activity.