Using blockchain technology to ensure that copyright-infringing content cannot be disseminated around the world is a complex topic. Blockchain itself is a decentralized distributed ledger that is mainly used to record transactions and information, and is transparent and immutable. These characteristics provide some opportunities for copyright management, but technology itself cannot prevent the spread of content. Here are some methods to consider: 1. **Copyright registration and certification**: - Use blockchain to create a copyright registration system and store information about the work (such as the creator, creation time, type of work, etc.) on the blockchain. In this way, anyone can verify the ownership and copyright information of the work. 2. **Digital watermarking and tracking**: - Embed digital watermarks in the work and store relevant information on the blockchain. Tracking the dissemination path of these works can help identify and pursue copyright infringement. 3. **Smart contracts**: - Use smart contracts to automatically execute copyright-related terms, such as authorization to use, payment, etc. This can ensure that creators receive due compensation when their works are used, and at the same time record the usage for easy traceability. 4. **Combining Content Distribution Network (CDN) with Blockchain**: - Combining blockchain technology with content distribution networks to ensure that the distribution of copyrighted works is authenticated, and unauthorized copying and dissemination will be marked and blocked. 5. **Community Monitoring and Reporting Mechanism**: - Establish a community-driven monitoring and reporting mechanism, use blockchain to record infringements reported by users, and enhance the transparency and effectiveness of copyright protection. 6. **Increase user participation**: - Encourage users and creators to participate in the copyright protection system, and use blockchain technology to enable users to easily report infringements and participate in the review and maintenance of content. It should be noted that although blockchain can provide certain tools and mechanisms for copyright protection, it cannot completely prevent infringements. Because once content is spread on the Internet, it is difficult to fully control its dissemination channels. Therefore, in addition to technical means, laws, education and user awareness are also important components of copyright protection.