Purchase Certificate Verification for NFT Content Transfer

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Solution Overview

Problem

Existing systems do not enable the sale and purchase of digital content while guaranteeing that the user has purchased a corresponding product or service, as they lack a mechanism to verify and transfer ownership securely.

Innovation Solution

A system that issues a purchase certificate and an NFT (Non-Fungible Token) to users upon successful verification, allowing the secure transfer and sale of digital content corresponding to purchased products or services, utilizing a certificate issuance means and NFT issuance means.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If digital content is distributed independently from product purchase verification, then distribution flexibility is improved, but ownership guarantee and security are worsened

Engineering Contradiction:

Improvedistribution flexibilityVSAvoidownership guarantee

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces a purchase certificate as an intermediary document that mediates between the product purchase verification and digital content distribution. The certificate issuance unit verifies purchase information and issues a purchase certificate that serves as proof of ownership, enabling secure transfer of digital content while maintaining the link to original purchase verification

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary verification of purchase information before issuing the purchase certificate. The certificate issuance unit verifies purchase information in advance and issues the certificate as proof of ownership, ensuring that ownership guarantee is established before digital content distribution occurs

Inventive Principle:

Principle #10Preliminary action

2Reliability

If purchase verification mechanism is implemented, then ownership guarantee is improved, but system complexity is worsened

Engineering Contradiction:

Improveownership guaranteeVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the system into distinct functional units: a certificate issuance unit that verifies purchase information and issues purchase certificates, and an NFT issuance unit that handles digital content distribution. This segmentation allows each unit to perform its specific function independently, managing system complexity while maintaining ownership guarantee

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The purchase certificate acts as an intermediary that simplifies the verification process. Instead of complex continuous verification, the system issues a single certificate that serves as proof of ownership, reducing the complexity of ongoing verification while maintaining reliability

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250384479A1System, server apparatus, control method of server apparatus, and non-transitory computer-readable storage medium

Publication Date: 2025.12.18 NEC CORP

AI summary

A system includes a certificate issuance means and an NFT issuance means. The certificate issuance means issues a purchase certificate related to a product or service purchased by a user. The NFT issuance means issues, in a case where a verification of the issued purchase certificate succeeds, to the user, an NFT (Non-Fungible Token) of digital content related to the product or service purchased by the user.