Blockchain-based image processing method and apparatus

1. A blockchain-based image processing method, comprising:

displaying, by a terminal device, a target image;

obtaining, by the terminal device, information of a copyright owner of the target image and a current display environment of the target image;

sending, by the terminal device, the obtained information to one or more blockchain nodes configured to obtain ciphertext information by encrypting the obtained information and to store the ciphertext information in a blockchain;

obtaining, by the terminal device, the ciphertext information from the blockchain; and

updating, by the terminal device, historical information in a pixel matrix of the target image based on the ciphertext information by:

encoding the ciphertext information to obtain a binary string corresponding to the ciphertext information;

determining a plurality of positions in the pixel matrix respectively associated with a plurality of characters of the historical information; and

replacing the character at each of the positions with a character of the binary string.

2. The method of claim 1 , wherein the information of the current display environment of the target image comprises;

a current time;

a current geographic location of the terminal device; or

information of the terminal device.

3. The method of claim 1 , wherein the historical information comprises information associated with a previous instance in which the target image was displayed.

4. The method of claim 1 , further comprising:

recording information of a process of updating the historical information in the pixel matrix; and

sending the recorded information to the one or more blockchain nodes for storing in the blockchain.

5. The method of claim 1 , wherein:

the information of the copyright owner comprises a name of the copyright owner or an ID number of the copyright owner; and

the information of the current display environment comprises a Media Access Control (MAC) address and/or an Internet Protocol (IP) address of the terminal device.

6. A blockchain-based image processing system, comprising:

a processor; and

a memory device storing instructions executable by the processor to cause the system to:

display a target image;

obtain information of a copyright owner of the target image and a current display environment of the target image;

send the obtained information to one or more blockchain nodes configured to obtain ciphertext information by encrypting the obtained information and to store the ciphertext information in a blockchain;

obtain the ciphertext information from the blockchain; and

update historical information in a pixel matrix of the target image based on the ciphertext information by executing the instructions to:

encode the ciphertext information to obtain a binary string corresponding to the ciphertext information;

determine a plurality of positions in the pixel matrix respectively associated with a plurality of characters of the historical information; and

replace the character at each of the positions with a character of the binary string.

7. The system of claim 6 , wherein the information of the current display environment of the target image comprises:

a current time;

a current geographic location of the terminal device; or

information of the terminal device.

8. The system of claim 6 , wherein the historical information comprises information associated with a previous instance in which the target image was displayed.

9. The system of claim 6 , wherein the instructions are further executable by the processor to cause the system to:

record information of a process of updating the historical information in the pixel matrix; and

send the recorded information to the one or more blockchain nodes for storing in the blockchain.

10. The system of claim 6 , wherein:

the information of the copyright owner comprises a name of the copyright owner or an ID number of the copyright owner; and

the information of the current display environment comprises a Media Access Control (MAC) address and/or an Internet Protocol (IP) address of the terminal device.

11. A non-transitory computer-readable storage medium for blockchain-based image processing, configured with instructions executable by one or more processors to cause the one or more processors to perform operations comprising:

displaying a target image;

obtaining information of a copyright owner of the target image and a current display environment of the target image;

sending the obtained information to one or more blockchain nodes configured to obtain ciphertext information by encrypting the obtained information and to store the ciphertext information in a blockchain;

obtaining the ciphertext information from the blockchain; and

updating historical information in a pixel matrix of the target image based on the ciphertext information by:

encoding the ciphertext information to obtain a binary string corresponding to the ciphertext information;

determining a plurality of positions in the pixel matrix respectively associated with a plurality of characters of the historical information; and

replacing the character at each of the positions with a character of the binary string.

12. The storage medium of claim 11 , wherein the information of the current display environment of the target image comprises:

a current time;

a current geographic location of the terminal device; or

information of the terminal device.

13. The storage medium of claim 11 , wherein the historical information comprises information associated with a previous instance in which the target image was displayed.

14. The storage of claim 11 , wherein the operations further comprise:

recording information of a process of updating the historical information in the pixel matrix; and

sending the recorded information to the one or more blockchain nodes for storing in the blockchain.

15. The storage medium of claim 11 , wherein:

the information of the copyright owner comprises a name of the copyright owner or an ID number of the copyright owner; and

the information of the current display environment comprises a Media Access Control (MAC) address and/or an Internet Protocol (IP) address of the terminal device.