OKX Blockchain 60 Lessons | Episode 57: What is Blockchain + Judicial Forensics?

Hello everyone, this is Xiao K. Today we are going to cover: "What is Blockchain + Judicial Forensics"?

Judicial forensics is one of the real-world application scenarios for blockchain. Many of you may be wondering: what does blockchain have to do with judicial forensics? The two seem completely unrelated. However, blockchain technology can actually solve the problem of evidence authenticity in judicial proceedings.

We all know that evidence collection is a critical part of judicial trials. The validity of evidence is assessed based on three key elements: authenticity, relevance, and legality. Among these, authenticity is the most important. But here's the question: in this era of advanced technology, how can we prove the authenticity of evidence?

For example, photos can be modified using photo editing software, and audio recordings can be fabricated through audio manipulation techniques. This means that during court proceedings, evidence obtained through great difficulty may end up going nowhere simply because a lawyer raises a question about it. Therefore, the biggest challenge in proving evidence validity is the need to establish beforehand that the evidence has not been tampered with.

Isn't immutability one of the defining characteristics of blockchain? The essence of blockchain is a distributed, decentralized database. Once data is uploaded to the chain, it is backed up by nodes across the network. To modify this data, one would need to compromise more than 50% of all nodes on the network, making the data extremely difficult to alter — which directly addresses the immutability requirement for evidence.

However, this alone does not fully prove that evidence is valid. While blockchain technology can ensure that evidence remains immutable during storage, it cannot guarantee the authenticity of the original data itself.

To address this, local governments have launched blockchain-based forensics apps. Users can record audio, capture video, take photos, and perform other evidence-collection activities directly within the app. The evidence is generated through the platform and transmitted to the blockchain for backup. Once uploaded, the file is encrypted using blockchain's cryptographic algorithms. Anyone can take this file to the blockchain platform for verification to confirm whether it has been tampered with. This prevents anyone from falsifying evidence during the collection process and solves the problem of evidence authenticity at its source.

Currently, China's Supreme People's Court, in its regulations on internet courts, has recognized blockchain as a means of evidence collection, preservation, and tamper-proofing technology, establishing the legality of blockchain evidence storage. Additionally, regions such as Beijing, Shenzhen, and Hangzhou have all launched related blockchain forensics platforms, significantly improving evidence固证 efficiency for law enforcement officers. It is believed that as blockchain technology continues to be applied in the judicial field, it will bring about a fairer and more just new internet world.

Special thanks to Professor Cao Yin for his assistance and guidance on this episode.

– END –

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