Explain the importance of blind signature & way it’s useful?

It is a type of digital signature within which the content of a message is disguised (blinded) before it’s signed. The ensuing blind signature may be publically verified against the first, unblinded message within the manner of a daily digital signature.
Blind signatures are generally used in privacy-related protocols where the signer and message author are totally different parties. Examples include cryptographic election systems and digital money schemes.