Digital Signature Authentication via KYC and Blockchain
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Solution Overview
Problem
Current digital signature systems lack the ability to definitively prove that a specific individual signed a document, as they rely on account authentication rather than personal identity verification, leading to potential deniability and security vulnerabilities, especially in legal and e-filing contexts.
Innovation Solution
A system and method that incorporates a KYC Provider subsystem for verifying user identity, biometric data capture, and decentralized storage to generate and verify digital signatures linked to the signer's identity, using blockchain technology for secure and tamper-proof authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional digital signature systems using account authentication are used, then ease of operation is improved, but reliability deteriorates because they cannot definitively prove that a specific individual signed a document
Solution Approach 1:
The authentication process is segmented into multiple independent verification layers: biometric data collection, KYC provider verification, blockchain-based digital signature generation, and authenticity report creation. Each layer operates independently to verify different aspects of identity, ensuring that account access alone cannot forge a signature without the actual signer's biometric presence.
Solution Approach 2:
Identity verification is performed in advance through the KYC Provider subsystem before the signing process. Biometric data is collected and verified beforehand, and this preliminary verification result is stored on the blockchain to prevent later denial of identity, thereby establishing reliability before the actual signing operation occurs.
2Reliability
If KYC verification and biometric data collection are added to the system, then reliability is improved, but device complexity increases
Solution Approach 1:
The KYC Provider acts as an intermediary subsystem that handles the complex tasks of identity verification and biometric validation. This external service absorbs the complexity of compliance and verification logic, allowing the core document signing system to remain relatively simple while still achieving high reliability through the intermediary's specialized verification functions.
Solution Approach 2:
The system automatically collects biometric data, performs KYC verification, generates digital signatures, and creates authenticity reports without requiring manual intervention at each step. The automated workflows and programmatic processes reduce operational complexity despite adding verification layers, as the system serves itself through automated identity proofing and signature generation.
3Reliability
If blockchain technology is used for storing authenticity reports, then reliability is improved through tamper-proof storage, but loss of energy increases due to distributed ledger maintenance
Solution Approach 1:
The energy-intensive blockchain operations are extracted from the core document signing workflow. Only essential authentication data and authenticity report hashes are stored on the blockchain, while the full verification logic and biometric data remain off-chain. This selective extraction minimizes blockchain usage to only what is necessary for tamper-proof verification, reducing overall energy consumption while maintaining reliability.
Data Source
AI summary
A system and method for authenticating a digitally signed document by one or more users includes a user processor to execute a user facing application to collect and transmit user data associated with the users. The system also includes a KYC Provider subsystem, including a KYC Provider database, and a KYC Provider processor to electronically receive the user data from the user processor and to automatically compare the user data and the verified user data to generate a KYC Provider report. An administrator processor electronically receives the user data from the user processor and the KYC Provider report from the KYC Provider processor to automatically: inspect the KYC Provider report to verify the identity of the one or more users; apply a digital signature of the one or more users to a document; issue an authenticity report associated with the signed document; and publish the authenticity report to a database.