Sayed, Ahmed M. El, et al. “Hardening Local SHA-256 (Secure Hash Algorithm 256-Bit) Chained Clinical Trial Logs Against Post-Hoc Manipulation Using Separated Seed Custody”. Journal of Advanced Scientific Computing and Applied Research, vol. 16, no. 7, July 2026, pp. 1-15, https://scichronicle.com/index.php/JASCAR/article/view/Hardening-Local-SHA-256.