A unique type of blind signature known as a proxy blind signature system (PBSS) permits a specific individual (called proxy signer) to sign any documents or messages in place of original signers (two or more) without being aware of the substance of the document. It meets the required precaution of both types of signature procedures and unite the benefit of proxy and blind signatures. We present a novel proxy blind signing system in this work that satisfies the required security for both blind and proxy signatures. The modified discrete logarithm problem (DLP) serves as the foundation for the plan. This updated version helps to lower the computational cost. A security analysis proving the efficiency and security of the suggested ‘proxy blind digital signature’ scheme is presented too.