Hello.

I would like to know how to recognize on the Blockchain website the following informations:

1 - SHA2 hashes of the plaintext ?
2 - Base64 Encoding of Signatures ?

In fact, I'm studying Blockchain and how it works. So help me to understand by giving me if it is possible by CAPTURE OF SCREEN how to recognize this information (SHA2 hashes of the plaintext and Signatures encoded in base64) on the website of the Blockchain.

Thank you in advance.