management stay within the customer’s infrastructure. WSData adds cryptographic provenance to messages and files so recipients can verify origin, sender identity, and whether content has changed, including in offline verification workflows. The service also supports signatures and approvals for PDFs, spreadsheets, CAD files, ZIP bundles, and other business documents, tying approvals to exact file versions. It is intended for legal, financial, healthcare, government, and other organisations that handle sensitive or regulated information and need secure delivery, retention, and audit-ready evidence.