At each stage of the signing workflow, capture and log: timestamp (UTC, from a trusted time source), actor identity (email, IP address, user-agent), action performed (viewed, signed, declined), and a SHA-256 hash of the document version at that point.
Bundle the evidence package on completion: original unsigned document, signed document, certificate of completion, event log, IP addresses, device fingerprints, and the signing platform's audit trail export.
Store the evidence package in write-once (WORM) or immutable storage; use object storage with versioning and Object Lock (e.g., AWS S3 Object Lock in COMPLIANCE mode) to prevent deletion.
Apply a trusted timestamp to the final signed document bundle using a TSA (Time-Stamp Authority) compliant with RFC 3161 to provide independently verifiable proof of signing time.
Index the evidence package in your CLM linked to the contract record; ensure it is retrievable within your litigation hold SLA.
Test the evidence package for completeness annually or after any platform change by having legal counsel review a sample for admissibility.
Known gotchas
E-signature platform audit logs stored only on the platform are not fully in your control; export and archive them independently at contract completion — do not rely solely on the platform's retention policies.
SHA-256 hashes logged without an independent timestamp can be backdated; pair every hash with an RFC 3161 timestamp token to make the time of capture independently verifiable.
Evidence packages that grow to gigabytes (due to video-based identity verification recordings) can exceed your storage retention budget; define and implement a tiered archival policy based on contract value and risk.
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp