Step 1 of 3
Your document stays with you
Alice opens a sample document on her phone, which it never leaves: COSigna only receives its unique code. Alice verifies with Bob and Charles that they have the document.
Welcome to COSigna
Its unique code, worked out on this device…
Step 2 of 3
Each person checks their own copy
Bob opens his link and picks his copy.
- His phone finds the same code: same document.…
-
He recognizes Alice from her photo. If not, the ring stops: nobody can sign as her.
-
Then he takes a selfie with the document's code.
Step 3 of 3
The loop closes
When Alice sees Charles and closes, the chain comes back to her: the loop is closed as everybody has now signed the exact same document and recognized the person before them.
In a real ceremony the proof outlives COSigna: anyone can check it, with or without us.
Your turn next
No signature was created and nothing was kept.
COSigna is in Private Alpha. Join the waitlist to be invited.
Join the waitlist