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Blockchain is a decentralized technology used to protect the security and privacy of online transactions and is usually associated with cryptocurrencies such as Bitcoin. However, it can be applied to all types of digital exchanges. In a new study, Amna Qureshi and Professor David Megías, Director of IN3, analyzed existing blockchain-based protection systems for multimedia content and created a taxonomy to classify them according to their technical characteristics, the protection techniques they use and their performance. The study is the first detailed analysis of this type of application and deals with the technological and scientific challenges for its improvement and implementation.

The researchers said, “Blockchain has great potential for widespread use in copyright protection and management applications. However, there are still many open questions that need to be further explored and analyzed in order to create functional copyright protection applications that can take full advantage of it the use of blockchain technology. “

A gap in research

With audiovisual content spreading more widely through online platforms and peer-to-peer (P2P) file sharing, issues such as content security, copyright protection, and piracy tracking are becoming more and more urgent for content owners, producers, and distributors. The researchers said that in light of these issues, blockchain makes it possible to “upload copyrighted content, control licensing / copyright options, manage distribution, track down sources of piracy, and receive payments when using content”.

Despite the boom in the industry and the capabilities of this technology, the new study highlights the fact that there are still very few blockchain-based copyright protection systems in existence: “This suggests a research gap. To fill this gap, we propose a taxonomy, that integrates technical aspects and application knowledge and can lead researchers to develop blockchain-based multimedia copyright protection systems. “

Comparison of copyright protection systems

To remedy this shortcoming, the researchers reviewed the scientific literature, analyzed 18 blockchain-based multimedia content protection systems and systematically compared them. They examined aspects such as whether the networks are public or private and which digital protection techniques are used, for example encryption or digital watermarks. They also examined their performance in terms of scalability, their potential to withstand cyberattacks, their response time, and their data storage capacity.

Their results made it possible to identify some of the research gaps that need to be filled in order to implement blockchain in this area. They underlined general shortcomings such as poor interoperability due to the lack of universal standards and the lack of models to validate the concept or to resolve conflicts. They also point to the prevailing problems in the design of multimedia content protection systems that can support blockchain technology, when including distributed systems or technological advances and security guarantees that are accepted by all parties involved.

These are broad lines that aim to improve the usability of blockchain technology in an area with great growth potential. However, for the researchers, future success depends on other factors related to the technology, such as: Foresee for example “scalability, reliability or market acceptance” that are difficult to achieve. “

A secure digital accounting book

Blockchain got its name from the fact that it works like a distributed and therefore decentralized digital accounting book, in which the records are blocks that are cryptographically linked and encrypted. Each block is cryptographically linked to the previous block after the distributed validation in which the rest of the network users participate, thereby bypassing costly intermediaries. Adding new blocks usually makes it impossible to change or delete the older ones, which prevents tampering.

Blockchain-based social network for sharing photos

More information:
Amna Qureshi et al. Blockchain-Based Multimedia Content Protection: Review and Open Challenges, Applied Sciences (2020). DOI: 10.3390 / app11010001

Provided by the Universitat Oberta de Catalunya

Quote: Blockchain-based copyright protection (2021, February 17), accessed February 17, 2021 from https://techxplore.com/news/2021-02-blockchain-based-copyright.html

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