Method for electronic signing of a document by a plurality of signatories

A method for electronic signing of a document by a plurality of signatories, comprising:

• a step of acquiring a photograph of at least one signatory of the plurality of signatories and identifying the signatory using the photograph,
• a step of associating the document in a digital form with the identified signatory using the photograph,
• a step of preliminarily calculating a matrix code by a cryptographic processing TC applied to the document being signed by the plurality of signatories,
• the step of acquiring a photograph including acquiring a photograph of the at least one signatory of the plurality of signatories bearing a physical medium representing the matrix code, wherein the matrix code is represented on a printed document or a screen of an electronic device in possession of the at least one signatory of the plurality of signatories when acquiring the photograph,
• a step of validating:
• the identity of the at least one signatory on the photograph, and
• conformity of the matrix code calculated by the cryptographic processing TC applied to the document being signed by the plurality of signatories with the matrix code on the photograph,
• the associating step comprising the transmitting a signature of at least one of the plurality of signatories on the document to a notarization server,
• repeating the steps of the method for electronic signing of the document by the plurality of signatories until at least two of the plurality of signatories have signed the document.