SMBs & freelancers
“A partnership deal, a sale, a loan between friends: three of us need to sign.”
Each of you signs from your phone. Each of you keeps an original. A Simple Electronic Signature under eIDAS. Up to 12 people sign one document, in order.
How it works 1 1 Choose the document and send each person their link. 2 2 Each checks it is the same file and adds their face after the previous one's. 3 3 Everyone downloads the same certificate. No account, no app, no card, for anyone who signs.
What COSigna does not do It does not verify identity: names are declared by the organizer. Your own branding is on request during the alpha, not self-serve.
COSigna — patent EP3665600B1 · US11531746B2 · FR3070079B1
Report bug COSigna — 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 