Blockchain Check Image Verification Against Payee Tampering

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing solutions for preventing check tampering focus on physical security measures, which are inadequate against fraud perpetrated by the intended recipient, as they do not ensure the check has not been altered between issuance and redemption.

Innovation Solution

A blockchain system is established among financial institutions to record an image of the negotiable instrument with metadata, allowing for comparison with the presented check to verify its integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If physical security measures are used to control access to the check, then access control is improved, but the check can still be altered by the intended recipient before redemption

Engineering Contradiction:

Improvecheck securityVSAvoidcheck tampering

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary action by capturing an image of the check and storing it in a blockchain record before the check is presented for redemption. This allows the original state of the check to be preserved and compared later, preventing tampering detection. The blockchain record is created at the time of check issuance or deposit, establishing a permanent baseline that cannot be altered.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system creates a digital copy of the check image and stores it in the blockchain. This copy serves as an immutable reference that can be compared with the physical check presented for redemption. The blockchain stores a cryptographic hash of the check image, creating a verifiable copy that proves the check's integrity without requiring physical security measures.

Inventive Principle:

Principle #26Copying

2Reliability

If the check is stored in a blockchain, then tamper evidence is improved, but the system complexity increases

Engineering Contradiction:

Improveintegrity verificationVSAvoidblockchain system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The blockchain acts as an intermediary system between the check issuer and the redeeming party. It provides a neutral, immutable ledger that stores check images and their cryptographic hashes. This intermediary allows verification of check integrity without requiring direct trust between parties, simplifying the verification process while maintaining security.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system replaces physical security measures with a digital blockchain-based verification system. Instead of relying on physical control and security personnel, the patent uses cryptographic hashing and blockchain technology to verify check integrity. This substitution reduces operational complexity while improving verification reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12524745B2Check tampering prevention using blockchain

Publication Date: 2026.01.13 CAPITAL ONE SERVICES LLC

AI summary

Various embodiments are directed to techniques for ensuring that a negotiable instrument has not been altered between the time the instrument leaves the hands of the payor and when the check is presented for redemption by the payee by recording an image of the check in a data block in a blockchain and retrieving the image when the check is presented for redemption for comparison with the check. A match between the stored image and the check indicates that no alteration of the check has occurred.