The reason for this is the exponential growth of blockchain technologies. The current popular three variants of proof of work, proof of stake, and proof of time have serious issues with each one of them. Although PoW is designed to be able to withstand most malicious attacks, it consumes too much energy, and its throughput is slow in transactions. PoS and PoT strengthen these factors but lower the security and trust standards, which are potential barriers in widespread deployment. To address this problem, the paper presents a novel QoS-aware consensus model by integrating PoW, PoS, and PoT for real-time deployment. Based on some specific requirements of networks and nodes, this research introduces the Elephant Herding Optimizer in order to provide a new algorithm that achieves intelligent consensus model selection. This approach makes maximum use of PoW, PoS, and PoT while using each technology’s strengths but reducing its associated limitations. A very dynamic and adaptive consensus mechanism that will work well under the dynamics of the change of network conditions, needs, and characteristics is achieved. The proposed consensus approach can significantly improve and enhance the performance and efficiency of the blockchain. Specifically, compared to conventional approaches, the proposed consensus approach improves operational speed by 8.5%, reduces energy usage by 8.3%, improves the packet delivery ratio by 2.9%, and increases throughput by 10.4%. The proposed advancement has substantially increased the usability and resilience of large-scale blockchain deployments, ensuring greater network dependability, security, and sustainability. This work lays down a foundation for the future of blockchain systems to take advantage of its focus on the imperative of flexible and efficient consensus models in the face of change and increasing demands. It promotes a fusion of consensus methods as an intelligent and successful approach to enable blockchains that combine performance, security, and sustainability.