Data storage and uploading require privacy and security. In today’s world, data is what we are in search of everywhere. The emerging technology known as blockchain has completely changed the security landscape across all major computer science fields. The confidentiality and integrity of data is maintained by ensuring robust protection from unauthorized access. By reducing the risk of a data breach, blockchain technology enhances data immutability and transparency. Serverless offers scalable and secure storage solutions allowing efficient handling of large datasets. There are several algorithms such as RSA (Rivest-Shamir-Adleman), McEliece, Knapsack, DES (Data Encryption Standard), and Triple DES, however, these provide longer encryption and decryption times. Specific data may contain sensitive information from multiple individuals or organizations. Such type of models may involve security issues of privacy and integrity. A safe processing platform is required by the network to maintain huge amounts of IOT (Internet of Things) data that are collected through gadgets and wearables. Many managing systems, protocols, algorithms, and hardware components are used to preserve and safeguard these data. In this paper, we introduce a representation, which offers a blockchain-based data storage architecture that uses the Blowfish encryption and decryption technique to securely store data in blockchain based serverless platform and also helps in promoting scalability with an efficient time for encryption and decryption. This innovative combination of blockchain and blowfish algorithm establishes a secure and decentralized framework, which offers the solution for cryptographic data protection. Further, a rigorous comparative analysis of RSA, McEliece, Knapsack, DES, and Triple DES with the blowfish algorithm is done. We assessed six encryption algorithms for data storage in blockchain networks to guarantee the maximum level of security. We discovered that the most effective way to create a decentralized, immutable system is to use blowfish encryption and decryption methods.