Blockchain Video Chain-of-Custody for Authenticity Verification
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Solution Overview
Problem
Current video authentication systems fail to safeguard against re-creation or duplication of video evidence, making it difficult to detect the original source and ownership, thus compromising video authenticity.
Innovation Solution
A blockchain-based system is used to verify video authenticity by generating a genesis block with the video clip and metadata, distributing it across nodes in a network, recording activities, and verifying the authenticity of modified versions based on recorded activities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional encryption and hashing algorithms are used for video authentication, then video tampering can be prevented, but the system cannot detect re-creation or duplication of video evidence
Solution Approach 1:
The patent segments the video authentication process into multiple components: (1) embedding unique identifiers and metadata within the video data structure, (2) creating cryptographic hashes of video segments, (3) distributing authentication data across multiple blockchain nodes. This segmentation allows the system to track individual video instances and their origins separately, preventing duplication while maintaining verification capability.
Solution Approach 2:
The patent implements nesting by embedding multiple layers of authentication data within the video structure: (1) metadata containing original source information is nested within the video container, (2) cryptographic hashes of this metadata are nested within blockchain transactions, (3) blockchain transaction IDs are nested back into the video metadata. This nested structure ensures that original ownership information is preserved and verifiable at multiple levels.
2Reliability
If blockchain technology is implemented to track video activities, then video authenticity and chain of custody are ensured, but processing and storage complexity increases
Solution Approach 1:
The patent extracts only the essential authentication elements (cryptographic hashes, transaction IDs, metadata signatures) from the complete blockchain data structure and embeds these extracted elements directly into the video file metadata. This allows verification of chain of custody without requiring the full blockchain network infrastructure to be present at every verification point, reducing complexity while maintaining reliability.
Solution Approach 2:
The patent performs preliminary authentication actions by embedding cryptographic hashes and unique identifiers into the video metadata at the point of creation or first upload. This preliminary action establishes the chain of custody before the video enters the blockchain network, so that subsequent verification only requires checking these pre-established elements rather than processing the entire blockchain history, thereby reducing infrastructure complexity.
Data Source
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AI summary
Disclosed herein are apparatuses and methods for verifying video authenticity using blockchain. An implementation may include receiving a video clip from a first source and generating a genesis block of a blockchain, wherein the genesis block includes the video clip, metadata of the video clip, and a first hash value of both the video clip and the metadata. The implementation includes distributing the blockchain to a plurality of nodes in a blockchain network. The implementation includes for each indication received of activity performed on the video clip to be recorded on the blockchain, verifying the activity and generating a new block on the blockchain recording the activity. The implementation includes receiving a modified version of the video clip, verifying an authenticity of the modified version based on each activity recorded in the blockchain, and in response to determining that the modified version is not authentic, generating an alert indicating inauthenticity.