Timestamps show that the blocks are connected in a chronological order. It marks the time for each transaction on the blockchain.
Simply put, the timestamp proves when and what has happened on the blockchain, and it’s tamper-proof.
Timestamp plays to role of a notary, and it’s more credible than a traditional one. Because nobody can alter the information on the blockchain. Given the timestamp feature, blockchain technology is suitable for areas such as intellectual property protection.
For instance, when you have written a thesis, You want to consult an industry expert before publishing, but you are afraid the expert might steal your work. Under such a scenario, you only need to save it on the blockchain to easily prove your ownership over the article.