SYEN Systems builds cryptographic compliance and audit infrastructure for Al decision systems in regulated environments. Founded by a former Mastercard infrastructure engineer, the company's product, SYEN Comply, records every Al action, human approval, and automated decision as a tamper-evident, independently verifiable entry. Each record is signed using the customer's own KMS key, chained with SHA-256, and anchored daily through DigiCert. Built for financial services, healthcare, and federal government. Available on AWS Marketplace and Microsoft Azure Marketplace.