Certus Ledger Signing Spine
A shared infrastructure layer for verified digital execution.
The Signing Spine is the common foundation behind Certus Ledger products. It binds signing activity to verified participants, controlled document revisions, policy decisions, event records, finalization, and evidence packages.
Identity Layer
KYC/KYB, signer identity, business verification, representative authority, and participant readiness.
Document Integrity Layer
Source identity, revision identity, content hash, prepared package state, and execution target binding.
Policy Layer
Allowed actions, blocked actions, reason codes, signing order, witness conditions, and finalization requirements.
Execution Layer
Agreement sessions, closing rooms, private signer action surfaces, room state, and ceremony activity.
Evidence Layer
Server-authored events, manifests, verification summaries, finalized records, hashes, and optional anchoring.
Portfolio Layer
Reusable infrastructure for product expansion across SignumEra, Prodicium, and future specialized workflows.
Why it matters
One technical spine supports multiple product categories.
The Signing Spine gives Certus Ledger a reusable foundation for building product lines that share identity, policy, evidence, and document integrity models.