Proof of Existence is a method of verifying and recording that specific data existed at a certain time. To establish proof, a timestamp and signature linked to the entity are needed to demonstrate its creation at a particular time. Blockchain technology provides a convenient solution for this purpose, as proof is stored on a public ledger that is transparent, unalterable, and permanent.
- Proof of ownership.
The owner of the data can confirm ownership without revealing the actual data.
- Data timestamping.
You can prove the existence of specific data at a particular time without relying on a central authority.
- Data Integrity Checking.
If there is even the slightest change in the document (even a single bit), it will result in a different file hash. By creating a stamp of your data and verifying it later, you can ensure that the data has not been altered.