In the current digital era, managing inheritance presents a critical challenge, necessitating a balance of effectiveness, security, and transparency. Traditional processes are often complex, time-consuming, and susceptible to fraud and disputes. This paper introduces the successor chain model called Waris-Chain, a blockchain-based solution designed to streamline and secure inheritance management. Waris-Chain integrates smart contracts and Non-Fungible Tokens (NFTs) to automate and verify inheritance processes, ensuring accuracy and reducing manual intervention. Developed using the Ethereum blockchain, ERC-1155 tokens, and MetaMask for authentication, Waris-Chain offers a comprehensive, adaptable, and secure platform. Performance evaluation shows that Waris-Chain achieves a high throughput of 477.36 transactions per hour, a low transaction latency of 7.54 seconds, with a 99.42% accuracy rate and a 0.58% error rate. Despite these advancements, challenges such as blockchain adoption, legal integration, and system scalability remain, suggesting avenues for future research to fully realize blockchain’s potential in inheritance management.