Image pickup apparatus capable of guaranteeing authenticity of content distributed in real time while photographing, content management apparatus, control method for image pickup apparatus, control method for content management apparatus, and storage medium

A content management apparatus comprising:

• a controller configured or programmed to function as:
• an obtaining unit that obtains, from an image pickup apparatus, distribution data used for live distribution of a video image photographed, a first hash value generated based on the distribution data at a predetermined timing, and information indicating a timing when the first hash value has been generated;
• a second hash value generating unit that generates a second hash value based on the distribution data according to the information indicating the timing;
• an identification number generating unit that generates an identification number for identifying the distribution data;
• and
• a registering unit that, in a case that the first hash value and the second hash value match, registers the first hash value and the information indicating the timing in a blockchain in association with the identification number.

A control method for an image pickup apparatus, the control method comprising:

• a step of transmitting distribution data used for live distribution of a video image photographed;
• a step of generating a hash value of the distribution data at a predetermined interval;
• and
• a step of transmitting the hash value and information, which indicates a timing when the hash value has been generated, to a content management apparatus that registers the hash value in a blockchain.

A control method for a content management apparatus, the control method comprising:

• a step of obtaining, from an image pickup apparatus, distribution data used for live distribution of a video image photographed, a first hash value generated based on the distribution data at a predetermined timing, and information indicating a timing when the first hash value has been generated;
• a step of generating a second hash value based on the distribution data according to the information indicating the timing;
• a step of generating an identification number for identifying the distribution data;
• and
• a step of, in a case that the first hash value and the second hash value match, registering the first hash value and the information indicating the timing in a blockchain in association with the identification number.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a control method for an image pickup apparatus, the control method comprising:

• a step of transmitting distribution data used for live distribution of a video image photographed;
• a step of generating a hash value of the distribution data at a predetermined interval;
• and
• a step of transmitting the hash value and information, which indicates a timing when the hash value has been generated, to a content management apparatus that registers the hash value in a blockchain.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a control method for a content management apparatus, the control method comprising:

• a step of obtaining, from an image pickup apparatus, distribution data used for live distribution of a video image photographed, a first hash value generated based on the distribution data at a predetermined timing, and information indicating a timing when the first hash value has been generated;
• a step of generating a second hash value based on the distribution data according to the information indicating the timing;
• a step of generating an identification number for identifying the distribution data;
• and
• a step of, in a case that the first hash value and the second hash value match, registering the first hash value and the information indicating the timing in a blockchain in association with the identification number.