https://astoncyber.com/research/ Published Aston Cyber research. https://astoncyber.com/research/secure-transaction-authorization-ledger/ https://astoncyber.com/research/secure-transaction-authorization-ledger/ A design-and-build case study of a Python prototype that separates authorization from money movement by binding sequential approvals to canonical transaction data, explainable risk scoring, and a tamper-evident ledger. Wed, 01 Jul 2026 00:00:00 GMT