Time Stamp Token Blockchain Verification for Data Integrity
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Solution Overview
Problem
Conventional time stamp token (TST) and blockchain schemes lack efficient mechanisms for data integrity verification and non-repudiation, particularly in decentralized environments, leading to security and authentication challenges.
Innovation Solution
A system where a Time Stamp Authority (TSA) generates TSTs for hashed data, publishes them to a blockchain, and grants permission for relying parties to access and verify the original data, using calibrated clocks and cryptographic signatures for integrity and non-repudiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional TST scheme is used, then data timestamping is achieved, but data integrity verification and non-repudiation are insufficient
Solution Approach 1:
The patent introduces a Time Stamp Authority (TSA) as an intermediary that issues cryptographic time stamps to data. The TSA acts as a trusted mediator between data creators and verifying parties, providing authoritative timestamp certification that enables reliable integrity verification without requiring complex distributed consensus mechanisms.
Solution Approach 2:
The patent creates cryptographic copies (hashes) of the original data and timestamps them. Instead of storing and verifying entire data sets, the system uses cryptographic hash copies that are computationally efficient to verify while maintaining data integrity proof, thus reducing verification complexity.
2Reliability
If conventional blockchain scheme is used, then data storage is achieved, but efficient data integrity verification is lacking
Solution Approach 1:
The patent extracts the timestamping function from the blockchain system itself, creating a separate TSA component that issues timestamps offline. This extraction allows blockchain to focus on its core strength (immutable storage) while TSA handles authentication, improving overall verification efficiency by avoiding blockchain's computational overhead for simple timestamp checks.
Solution Approach 2:
The patent performs timestamping in advance through the TSA before data needs verification. By pre-certifying data with cryptographic timestamps, the system eliminates the need for complex real-time verification when data is accessed, significantly improving verification productivity.
3Adaptability or versatility
If data is shared across multiple parties, then collaboration is enabled, but security and authentication challenges increase
Solution Approach 1:
The patent uses cryptographic hash copies of data combined with digital signatures to enable secure sharing. Instead of sharing raw data, parties exchange verified hash copies with timestamps, allowing authentication and integrity verification without exposing the actual data, thus reducing security risks in multi-party collaborations.
Data Source
AI summary
The present disclosure is directed to systems, methods, and non-transitory computer-readable media including receiving, by a Time Stamp Authority (TSA) computing system from a requestor computing system, hashed data corresponding to original data, generating, by the TSA, a Time Stamp Token (TST) for the hashed data, publishing, by the TSA, the TST to a blockchain, and sending, by the TSA to the requestor computing system, the TST.