Decentralized Digital Identity Verification via Bio-Hash Sharding

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Solution Overview

Problem

Existing digital identity verification systems face challenges such as dependency on physical devices, internet connectivity, and the need for specific hardware for verification, which limits their usability and security.

Innovation Solution

An automated real-time digital identity verification system that uses live biometric data to generate a stable bio-hash and decryption keys, allowing for decentralized verification in both online and offline modes without the need for pre-stored biometric templates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a centralized system or backend is used for identity verification, then verification can be performed online, but the system becomes dependent on internet connection

Engineering Contradiction:

Improveverification capabilityVSAvoidoffline operation capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system divides the verification functionality into distributed verification nodes that can operate independently without a centralized backend. Each node contains the necessary verification logic and can process identity verification requests autonomously, enabling offline operation while maintaining verification reliability.

Inventive Principle:

Principle #1Segmentation

2Reliability

If physical credentials such as plastic cards with chips are used, then identity verification can be performed, but purpose-built devices are required for verification

Engineering Contradiction:

Improveidentity verificationVSAvoidverification device requirement

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system replaces physical credentials with digital identity credentials that can be stored and presented on general-purpose devices such as smartphones. The verification process uses cryptographic protocols and biometric authentication instead of requiring specialized card readers or purpose-built verification devices.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If mobile phones are used for credential storage, then credential carrying becomes convenient, but the identity carrier must have a phone

Engineering Contradiction:

Improvecredential carryingVSAvoiddevice dependency

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The system designs the digital credential system to be device-agnostic, allowing identity credentials to be stored and presented on multiple types of devices including smartphones, tablets, wearables, and even paper-based digital credentials. The verification nodes can authenticate credentials regardless of the presenting device type, eliminating smartphone dependency.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If conventional identity verification systems are used, then verification can be performed, but security and privacy aspects are compromised

Engineering Contradiction:

Improveverification functionVSAvoidsecurity and privacy risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system introduces zero-knowledge proofs as an intermediary mechanism that allows verification of identity attributes without revealing the underlying personal data. The verification nodes can confirm credential validity and attribute ownership while the user's personal information remains encrypted and undisclosed, enhancing both security and privacy.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system transforms the verification process by changing the data representation parameters - using cryptographic hashes, encrypted credentials, and selective disclosure mechanisms. Instead of transmitting or storing raw personal data, the system operates on transformed cryptographic representations that maintain verification functionality while protecting privacy.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250106031A1System and method for decentralized digital identity verification

Publication Date: 2025.03.27 TECH5 SA

AI summary

A system for an automated real-time digital identity verification based on live biometric data including a processor of an identity verification node connected to at least one verifier entity node over a network and a memory on which are stored machine-readable instructions that when executed by the processor, cause the processor to: acquire a request associated with a user cryptograph embedded into an identification user credential from the at least one verifier entity node, wherein the identity verification request including at least one live biometric data sample captured by the at least one verifier entity node and at least one parameter indicating a piece of data from the user cryptograph to be revealed to the at least one verifier entity; generate a stable bio-hash from the at least one live biometric data sample; derive the at least one parameter from the request; generate a decryption key comprising a plurality of shards from the at least one live biometric data sample; and provide at least one of the plurality of shards to the at least one verifier entity node based on the at least one parameter.