Metadata generation method, verification method, and electronic device

A metadata generation method, comprising:

• obtaining an (N+1)th piece of media content, wherein the (N+1)th piece of media content is obtained based on an Nth piece of media content;
• and
• generating metadata of the (N+1)th piece of media content, wherein the metadata of the (N+1)th piece of media content comprises initial information of first media content and a digital signature of first data;
• and the metadata of the (N+1)th piece of media content further comprises N media hash values, wherein a first media hash value is a hash value of the first media content, an (N+1)th media hash value is a hash value of the (N+1)th piece of media content, the first data is data determined based on at least the initial information and the first media hash value, and N is a positive integer.

An electronic device, comprising:

• a memory storing program instructions;
• and
• a processor, coupled with the memory, configured to execute the program instructions, causing the electronic device to:
• obtain first media content, and
• generate metadata of the first media content, wherein the metadata of the first media content comprises initial information of the first media content, a first media hash value, and a first digital signature, the first media hash value is a hash value of the first media content, the first digital signature is a digital signature of first data, and the first data is data determined based on at least the initial information and the first media hash value;
• or
• obtain an (N+1)th piece of media content, wherein the (N+1)th piece of media content is obtained based on an Nth piece of media content, and
• generate metadata of the (N+1)th piece of media content, wherein the metadata of the (N+1)th piece of media content comprises initial information of first media content and a digital signature of first data;
• and the metadata of the (N+1)th piece of media content further comprises N media hash values, wherein a first media hash value is a hash value of the first media content, an (N+1)th media hash value is a hash value of the (N+1)th piece of media content, the first data is data determined based on at least the initial information and the first media hash value, and N is a positive integer.

A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is run on a computer or a processor, the computer or the processor is caused to:

• obtain first media content, and
• generate metadata of the first media content, wherein the metadata of the first media content comprises initial information of the first media content, a first media hash value, and a first digital signature, the first media hash value is a hash value of the first media content, the first digital signature is a digital signature of first data, and the first data is data determined based on at least the initial information and the first media hash value;
• or
• obtain an (N+1)th piece of media content, wherein the (N+1)th piece of media content is obtained based on an Nth piece of media content, and
• generate metadata of the (N+1)th piece of media content, wherein the metadata of the (N+1)th piece of media content comprises initial information of first media content and a digital signature of first data;
• and the metadata of the (N+1)th piece of media content further comprises N media hash values, wherein a first media hash value is a hash value of the first media content, an (N+1)th media hash value is a hash value of the (N+1)th piece of media content, the first data is data determined based on at least the initial information and the first media hash value, and N is a positive integer.