US 2018/0197007 A1 · Method and Device to Timestamp a Digital Image

Abstract

The method and device are intended to prove the posteriority date (P) and anteriority date (A) of a digital image (IN) including building with a first server a previously unknown code (C) and transmitting this code (C) at the posteriority date (P), acquiring the digital image including a joint representation of a subject (S) and the code (C), computing an electronic fingerprint (EIN) of the digital image (IN), receiving with a second server at the anteriority date (A) the electronic fingerprint (EIN), inserting a combination (EIN+A) of the electronic fingerprint (EIN) and the anteriority date (A) in a block chain and possibly retrieving and sending back with a third server the recorded posteriority (P) and anteriority (A) dates from the reception of a new digital image (IN2). The disclosure is intended in particular to prove with images the correct performance of clinical protocol steps in clinical trials.

Claims19

Dependent claims

A method to time stamp digital images providing a proof that a digital image has been acquired after a first date, said date being named “posteriority” date (P) and before a second date, said date being named “anteriority” date (A), comprising the steps of:

Building (100) with a first server, prior to or at a date of posteriority (P), a previously unknown code (C).
Transmitting (200) by the first server at the posteriority date (P) the previously unknown code (C).
Storing (300) in the first server a combination (C+P) of the posteriority date (P) and the previously unknown code (C).
Receiving (710) with a second server at an anteriority date (A) a digital image (IN) of a joint representation of a subject (S) and of the previously unknown code (C) and computing an electronic fingerprint (EIN) of the digital image (IN) or alternatively receiving directly (720) with the second server at the anteriority date (A) the electronic fingerprint (EIN) of the digital image (IN).
Storing (800) with the second server a combination (EIN+A) of the electronic fingerprint (EIN) and the anteriority date (A) and inserting this combination (EIN+A) into a block chain.

2 more elements

A device to time stamp digital images comprising at least one server (1) configured to certify the anteriority of digital files, equipped with a system to measure time (2), with computation means (3) and in particular with means to compute electronic fingerprints of digital files (31), storage means (4), data reception means (5), data transmission means (6), wherein said server (1) is further equipped with means to:

Generate (32) at a first date (P), said date being named the “posteriority” date, a previously unknown code (C) and store a combination (C+P) of the previously unknown code (C) and the posteriority date (P).
Transmit (6) the previously unknown code (C).
Receive (5) at a second date (A), said date being named the “anteriority” date, a digital image (IN) of a joint representation of a subject (S) and of the previously unknown code (C) and compute (31) an electronic fingerprint (EIN) of the digital image (IN) or alternatively receive directly the electronic fingerprint (EIN) of the digital image (IN).
Store in the storage means (4) a combination (EIN+A) of the electronic fingerprint (EIN) and the anteriority date (A) and insert this combination (EIN+A) into a block chain.

1 more element

Dependencies are inferred from the claim text.

Method and Device to Timestamp a Digital Image

Life of this patent

Method and Device to Timestamp a Digital Image

Life of this patent

Abstract

Claims19