Verified participants
Products built on the Signing Spine can connect signing activity with stronger individual and business verification flows.
Certus Ledger Plc
The signing infrastructure company behind verified digital execution.
Certus Ledger Plc develops portfolio products built on the Certus Ledger Signing Spine — a shared protocol foundation for identity-aware signing, policy-controlled execution, document integrity, finalization, and evidence-first agreement records.
Market thesis
Digital signing is moving beyond the envelope.
First-generation e-signature systems made remote signing convenient. The next generation needs stronger identity context, controlled document versions, policy decisions, witness-ready workflows, finalization, and evidence packages.
Controlled execution
Role eligibility, signing order, witness conditions, and finalization requirements can be evaluated as execution policy.
Defensible records
Agreement records can include manifests, audit events, document hashes, verification summaries, and finalized outputs.
One spine. Multiple products.
The Certus Ledger Signing Spine creates portfolio leverage.
SignumEra and Prodicium are designed around a shared infrastructure model. Improvements to identity, evidence, document integrity, policy, and execution logic can strengthen the entire product portfolio.
Identity Layer
KYC/KYB, signer identity, business verification, and participant readiness.
Document Integrity Layer
Source document binding, revision freezing, content hashing, and execution targets.
Policy Layer
Signing order, role eligibility, witness rules, ceremony mode, and finalization conditions.
Execution Layer
Agreement sessions, signing rooms, private action surfaces, live activity, and state transitions.
Evidence Layer
Server-authored events, manifests, evidence packages, finalized PDFs, and optional anchoring.
Portfolio Layer
Reusable trust primitives for product expansion across specialized digital execution workflows.
Portfolio
Products built on the Signing Spine.
SignumEra
Second-generation digital signing for verified agreement execution. SignumEra turns signing into evidence-first execution rooms with KYC/KYB, Microsoft-native documents, policy controls, witness-ready logic, finalization, and evidence packages.
Prodicium
Prodicium is a Certus Ledger project designed to extend the company’s shared signing, verification, and evidence infrastructure into specialized workflows built on the same Signing Spine.
Corporate information
Built as infrastructure, expressed through products.
Certus Ledger Plc is developing a portfolio around verified digital execution, using the Signing Spine as a shared technical and commercial foundation.