US 12,386,926 B2
Process and platform for traceability of an attachment generated by a third party from a source document by means of a blockchain system
Anne-Cecile Davron, Paris (FR); and David Davron, Paris (FR)
Assigned to DAVRON DIGITAL, Paris (FR)
Appl. No. 18/028,481
Filed by DAVRON DIGITAL, Paris (FR)
PCT Filed Sep. 22, 2021, PCT No. PCT/EP2021/076095
§ 371(c)(1), (2) Date Mar. 24, 2023,
PCT Pub. No. WO2022/063844, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 2009747 (FR), filed on Sep. 24, 2020.
Prior Publication US 2024/0061912 A1, Feb. 22, 2024
Int. Cl. G06F 21/16 (2013.01); G06F 16/908 (2019.01)
CPC G06F 21/16 (2013.01) [G06F 16/908 (2019.01)] 10 Claims
OG exemplary drawing
 
1. A process for traceability of an attachment generated by a third party from a source document with which it is associated, said process using a blockchain system and comprising the following steps:
an initialization step consisting of:
saving and analysis of the source document to obtain initialization metadata of the source document, which consist of:
metadata intrinsic to the source document; and
metadata extrinsic to the source document incorporating the metadata generated by the application implementing the process;
calculation of the digital fingerprints of the source document and its content, and the digital fingerprints of the intrinsic metadata of the source document;
placing in a smart contract of a blockchain system initialization metadata of the source document, including the intrinsic metadata, and the extrinsic metadata incorporating the digital fingerprints calculated;
a processing step performed by the third party consisting of generation of the attachment by the third party, both the source document received as well as said attachment thus generated by the third party for processing being electronically signed by said third party, the attachment incorporating in its extrinsic metadata the reference digital fingerprints (HRA) of the source document with which the attachment is associated, and the digital fingerprints of the content of the source document taken to be signed; and
a receiving step from the third party consisting of saving and, in parallel, analysis of the signed source document and the signed attachment received from the third party to obtain reception metadata comprising:
intrinsic metadata of the signed source document and the intrinsic metadata of the signed attachment;
extrinsic metadata of the signed source document and the extrinsic metadata of the signed attachment containing the digital fingerprints:
of the source document received
of the attachment and the reference document and their respective content;
the metadata relating to the signed source document and the signed attachment;
the receiving metadata being placed in the smart contract of the blockchain system;
a smart contract thus placed after each initialization step and each receiving step, thus enabling the creation of an audit and traceability trail for the attachment generated by the third party from the source document with which it is associated; and
a sending step that consists of sending the source document to the third party, the metadata intrinsic to the source document and the extrinsic metadata comprising the digital fingerprints of the source document, its content, and metadata relating to the source document being placed in the smart contract of the blockchain system.