Verify a document Sign in Create workspace ES

E-signature

Send, sign and store agreements with evidence that withstands scrutiny.

The entire signing lifecycle: you create the envelope with your documents, place the fields on the PDF, define who signs and in what order, and Certums handles the rest — reminders, a signing ceremony with a visual signature, a completion certificate and automatic distribution. Every act is chained into an evidentiary record that can be verified independently.

Create your free workspace Is it legally valid?

Envelopes and signing workflows

  • Multi-signer with sequential, parallel, mixed and conditional flows.
  • Roles per participant: signer, approver, CC — with SES/AES/QES levels per signature.
  • Automatic reminders with escalation if the agreement stalls.
  • Scheduled expiration, cancellation with a reason and signer reassignment.

Visual field editor

  • Place signature, initials, date and text on the actual PDF, page by page.
  • Drag and resize; normalized coordinates independent of zoom level.
  • Versioned agreement templates: define roles and fields once, reuse forever.
  • Bulk send: an independent agreement per recipient from a list.

The signing ceremony

  • No account or downloads: a single-use link per signer.
  • The signer reads the actual document (built-in viewer, mobile included).
  • Drawn, typed or uploaded signature image — captured as evidence with its sha-256 fingerprint.
  • OTP verification by email; signers can delegate or decline with a reason.

The final document

  • On completion, the document is generated with the signatures stamped in place.
  • Completion certificate: signing events, IPs, methods, hashes and seals, with a verification QR.
  • PAdES-signed by the platform and stored immutably.
  • Automatic distribution: every party receives the final PDF by email.

Evidence that withstands scrutiny

  • Hash-chained evidence file, exportable and verifiable outside Certums.
  • RFC 3161 timestamp and Ed25519 platform seal on completion.
  • Public verification of the agreement by URL — anyone can check it, no account needed.
  • Long-term preservation (LTA) with periodic seal renewal.

Under your brand, inside your app

  • The signing portal and emails go out with your logo and colors, not ours.
  • Embedded signing: integrate the ceremony into your own application via iframe + API.
  • Public forms with self-initiated signing: the signer arrives on their own.
  • Full API and signed webhooks to orchestrate everything from your systems.