Blockchain Evidence Collection via Multimedia Transaction Broadcasting
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Solution Overview
Problem
Existing evidence acquisition methods in judicial practices are inconvenient for parties, requiring on-site collection by authorities to ensure legal validity and preventing tampering, which limits accessibility and authenticity.
Innovation Solution
A blockchain ledger-based method where users can record multimedia files of their behavior and voice using user equipment, which are then sent to a service device to construct a transaction and broadcast to a blockchain network for multi-party storage, ensuring tamper-proof and legally valid evidence collection without relying on authorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If evidence is collected on-site by authorities to ensure legal validity and prevent tampering, then the reliability of evidence is improved, but the ease of operation and accessibility for parties is worsened
Solution Approach 1:
The patent enables parties to independently collect and store evidence using their own devices without requiring authority intervention. The system allows self-service evidence collection through mobile applications that record multimedia data and automatically upload it to the blockchain, eliminating the need for parties to travel to courts or notary offices while maintaining evidence reliability through cryptographic verification
Solution Approach 2:
The blockchain system acts as an intermediary between parties and authorities, providing a trusted third-party infrastructure that enables independent evidence collection while ensuring legal validity. The blockchain ledger mediates the evidence storage process, providing tamper-proof recording that both parties and authorities can trust, thus bridging the gap between convenience and reliability
2Reliability
If evidence is stored centrally to ensure security and prevent tampering, then the reliability is improved, but the device complexity and infrastructure requirements are worsened
Solution Approach 1:
The patent divides the evidence storage system into multiple independent nodes distributed across the blockchain network. Instead of a single centralized storage facility, evidence data is segmented and stored across numerous participants, each maintaining a copy of the ledger. This segmentation reduces the complexity burden on any single entity while collectively providing enhanced security and tamper resistance
Solution Approach 2:
The system creates multiple identical copies of the evidence data stored across different nodes in the blockchain network. Each node maintains a complete or partial copy of the ledger, ensuring that evidence integrity is preserved through redundancy. This copying mechanism eliminates the need for complex centralized security infrastructure while maintaining high reliability through distributed verification
Data Source
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AI summary
Disclosed are a blockchain ledger-based evidence acquisition method and apparatus. A user (party to a lawsuit) can operate user equipment to record one or more of the user's behavior and voice into a multimedia file and then send the multimedia file to a service device, so the service device constructs a target transaction based on the multimedia file and broadcasts the target transaction to a blockchain network for each node in the blockchain network to add the target transaction to the blockchain based on a consensus mechanism. As such, multi-party storage of the multimedia file is realized.