Design and Implementation of a Smart Contract Integrity Verification Framework for API

Abstract

This paper presents a Smart Contract Based Integrity Verifier framework for web security in APIs. This framework utilizes blockchain technology in order to design a secure mechanism that makes use of cryptographic hashes to verify the credibility of API responses. Smart contracts ensure transparent and tamper-proof scoring while automating security enforcement The approach is relevant because it covers the weaknesses existing in the existing Oauth 2.0 APIs and provides a strong mechanism for data tampering detection and prevention. This is achieved through the implementation of the system on Python Framework and blockchain simulation, hence enabling users to interact with the system and send API responses validated for credibility. The framework ensures$\mathbf{9 8 \%}$verification accuracy rates as compared to the existing security mechanisms for API Credibility Verification. Future work is in integrating into various domains, such as healthcare, finance, supply chain, and IoT.