Electronic health records possess the patient's medication details and health history. To secure health records using a distributed and decentralized ledger called Blockchain. Blockchain is an append-only list of sets of cryptographically signed records or transactions called blocks that a number of parties want to update. Provide Different Identity-based authentication for medical data access. Implement ECC (Elliptic Curve Cryptography) algorithm to provide security parameters to encrypt the data before it a store on the cloud. Blockchain technology can be used in many different areas of the healthcare system. Provides efficient access control policy based on user’s different identity and also implements secure encryption using ECC encryption algorithm. The proposed Access Control with Encryption model efficiently performs user revocation and decryption operations. Access control is a fundamental component of security compliance programs that ensures security technology and access control policies are in place to protect confidential information, such as customer data. The owner can set different access policies based on the data user’s role. Uploaded data are encrypted using the ECC encryption algorithm. Encrypted data are stored based on blockchain technology. File access keys will be shared with specific data users based on their role-based access permission. Time control implements to verify the access pattern of the data user. Implement a secure user revocation process with a key update system. Modify the existing functional commitment (FC) scheme for the VDB design and construct a concrete FC under the computational BDHE assumption. In addition, the use of an efficient verifier-local revocation (VLR) group signature scheme makes our scheme support dynamic group member operations and gives nice features, such as traceability and non-flammability.