There are a number of real life scenarios where a public witness is valuable: disputes between multiple parties, general fact checking, accurate historical accounts, and so on. Anytime evidence is presented, it is strengthened by the word of multiple parties who can attest to the correct version of what really happened.
The Factom®️ blockchain can be used as a public witness in areas of the world where public recordkeeping entities don’t exist or are unreliable and can provide assistance in dispute resolution.
Here are a few examples where Public Witness is necessary:
Verifying the legitimacy of a document from an issuing entity
Using a third party public witness to add credibility to a claim
Creating a trusted knowledge base as multiple public witnesses attest to the same thing