An integrated identity is a centralized identifier that makes it possible for customers to access a variety of business services from a single network. In blockchain technology, ensuring security and privacy is a major concern, especially when it comes to secure data transfer, which often results in extended encryption and decryption times. Therefore, this research proposes an Elliptic Curve Integrated Encryption Scheme with Delegated Proof of Stake (ECIES-DPoS) for digital identity and security in blockchain. The ECIES uses Elliptic Curve Cryptosystem (ECC) to deliver high-level security with small key sizes which enables efficient encryption. The DPoS enables the creation of blocks and validates transactions to reduce the time required for the encryption and decryption processes. The efficiency of ECIES-DPoS in reaching consensus can lead to high transmission overhead which enables blockchain to handle a large number of transmissions. Several metrics like space occupancy, verification accuracy, transmission overhead, encryption, and decryption time are considered to evaluate the performance of ECIES-DPoS. The ECIES-DPoS achieves an encryption time of 2.13 ms and decryption time of 1.058 ms compared to existing techniques like Quantum Key Distribution-Modified Advanced Encryption Standard (QKD-MAES).