Blockchains represent a transformative computing model that secures data and applications through a decentralized network rather than centralized intermediaries. This model enhances trust-minimization and credible neutrality by employing cryptography, decentralized consensus, and financial incentives, allowing users to independently verify the integrity of computations. Unlike traditional client-server models where users must trust centralized servers, blockchains enable a checks and balances system between network participants such as block producers and full nodes. Full nodes independently validate each block to ensure protocol compliance, thereby keeping block producers accountable and enhancing network security. The system's transparency mitigates the risks of data manipulation and censorship inherent in traditional models, offering an improved trust model despite challenges in scaling and user accessibility. As blockchains gain traction, innovations in trust-minimized light clients and layer-2 solutions are helping to balance increased transaction throughput with low verification costs, further solidifying blockchains as a robust alternative to conventional computing paradigms.