Timestamping is the act of linking a document to a specific point in time. This is done by creating a hash of the file, optionally combining it with metadata, and writing that hash to a blockchain with a timestamp.
Blockchain technology is used to store timestamps in a public and immutable way. Once a timestamp is recorded, it cannot be changed or deleted. This makes the certification reliable and future-proof.
A hash is a unique digital fingerprint generated from a file or metadata. Even the smallest change to a file creates a completely different hash, making manipulation easy to detect.
Context refers to the extra information added to a file before validation. This can include descriptions, authors, document versions, tags, or any other relevant metadata.