KR-20260062558-A - Blockchain-based Duplicated Digital Contents Prevention System

Abstract

The present invention relates to a digital content issuance and verification system for preventing damage caused by duplicate minting and scam projects in NFT marketplaces. The system generates a unique signature upon the initial issuance of digital content, inserts it into the content, and records it on a blockchain, thereby blocking the reissuance of the same content from other accounts. The system consists of a content publishing unit, a content signing unit, a content signature verification unit, a data transmission and reception unit, and a blockchain unit. The content signing unit generates a unique signature based on the hash value of the published content, hides it in metadata or pixel data, and records the information on the blockchain through the data transmission and reception unit. Upon a new minting request, the content signature verification unit extracts the signature and compares it with the signature stored on the blockchain; if an identical signature exists, the minting request is rejected.

Inventors

• 최종석

Assignees

• 주식회사 바이야드

Dates

Publication Date

20260507

Application Date

20241029

Claims (4)

1. With a system structure for preventing duplicate issuance of digital content within the blockchain, A system composed of a blockchain division and a service division, where all or part of the blockchain division can be based on code on the blockchain.
2. In paragraph 1, A system that attaches the publisher's signature to content when publishing content.
3. In paragraph 1, A system that checks signatures attached to content when publishing content.
4. In paragraph 3, A system that determines whether to publish content by examining the signature attached to the content and the signer of the publishing transaction when publishing content.

Description

Blockchain-based Duplicated Digital Contents Prevention System The present invention relates to a blockchain-based digital content management and NFT (Non-Fungible Token) issuance system, and concerns a technology that inserts a unique signature when issuing digital content to prevent duplicate minting of the same content. In particular, the present invention guarantees the uniqueness and integrity of the content through the interaction between the digital content issuance unit and the blockchain unit. In the current NFT ecosystem, instances of identical digital content being duplicated across multiple accounts or copied without authorization are occurring. This triggers copyright infringement and ownership disputes, undermining the credibility of NFTs. Existing systems have limitations in guaranteeing content integrity because they fail to clearly distinguish between the original and copies during the NFT issuance process. The present invention proposes a system that prevents duplicate minting of identical content by generating a unique signature upon the publication of digital content, inserting the information into the content, and recording the corresponding information on a blockchain. This ensures the copyright protection and reliability of NFT content. The digital content issuance unit (100) consists of modules responsible for core functions such as minting content, generating and verifying signatures, and transmitting and receiving data. When a user uploads content to issue it as an NFT, various modules within the issuance unit work together to ensure the uniqueness and integrity of the content. The content issuance unit (110) issues digital content uploaded by a user as an NFT and manages metadata and ownership information of the issued content. Information required for content issuance is transmitted to the blockchain through the data transmission and reception unit (140). The content signature unit (120) generates a unique signature of the content and hides it in metadata or pixel data. This signature is generated using the hash value of the content, thereby guaranteeing the authenticity of the content and preventing future re-publication. When the content signature verification unit (130) attempts to mint the same content from a new account, the content signature verification unit (130) extracts the signature embedded in the content and compares it with the signature stored in the blockchain. If the same signature already exists, the minting request is rejected, thereby blocking duplicate minting. The data transmission and reception unit (140) performs the role of transmitting and receiving data between the digital content issuance unit (100) and the blockchain unit (200) during the content issuance and verification process. It records the signature and ownership information of the published content on the blockchain, retrieves information required for verification from the blockchain, and transmits it to the verification unit (130). The blockchain department (200) is responsible for recording and managing issued NFT content, signatures, and ownership information. The blockchain network ensures that the information of the issued content is not altered and transparently records all minting and transaction history. Hereinafter, specific details for implementing the present disclosure will be described in detail with reference to the attached drawings. However, in the following description, specific descriptions regarding widely known functions or configurations will be omitted if there is a risk that the gist of the present disclosure may be unnecessarily obscured. In the attached drawings, identical or corresponding components are assigned the same reference numerals. Additionally, in the description of the following embodiments, the description of identical or corresponding components may be omitted. However, even if a description of a component is omitted, it is not intended that such component is not included in any embodiment. In this disclosure, all or part of the service portion may be composed of smart contracts on a blockchain, and the terms private blockchain and public blockchain are used interchangeably as blockchain networks for the service portion. For the minting of digital content and the generation of a signature, the first terminal (content provider) uploads its digital image to be minted as an NFT through the content issuance unit (110). When the uploaded content is published, the content signature unit (120) generates a unique signature using the hash value of the image. The generated signature is hidden and inserted into the image's metadata or pixel data. The signature inserted in this way can be extracted even if the content is duplicated or manipulated, serving as a standard for verifying authenticity. Simultaneously with the issuance of the content, the data transmission/reception unit (140) records the generated signature and content issuance information in the blockchain