Enterprise

“Our board papers and deal drafts must not leave our own systems.”

Board papers signed without the server ever receiving them.

A Simple Electronic Signature under eIDAS. Branding (logo, colors, font, verified domain) is on request during the alpha.

Request alpha access →Invite-only during the alpha. The people who sign need no account.

How it works

  1. Your organizer creates the ceremony; files stay on your machines.
  2. Directors sign from a link: no account, no app, each validating the document first.
  3. Compliance, auditors and counterparties verify the certificate offline.

The proof verifies without COSigna, for compliance and auditors alike.

What COSigna does not do

It does not verify identity: names are declared by the organizer. It is not a Qualified Trust Service Provider.

Request alpha access →Invite-only during the alpha. The people who sign need no account.
COSigna — patent EP3665600B1 · US11531746B2 · FR3070079B1
Report bugCOSigna — a Cryptographic Ring of Mutual Consent · The ring is strong because the loop is closed.The ring is strong because the loop is closed.COSigna