Receipt-Linked NFT Metadata for Verified Purchase Reviews
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Solution Overview
Problem
Existing systems lack a reliable method to verify the authenticity of purchase reviews and guarantee the purchase of products or services, especially in secondary trade processes, using non-fungible tokens (NFTs).
Innovation Solution
A method involving a smart contract on a blockchain network to issue NFTs associated with receipts, record evaluation information in metadata, and verify the authenticity of the reviewer as a purchaser, ensuring that only genuine purchasers can write reviews, thereby enhancing trust and preserving product value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NFTs are issued and metadata are recorded on blockchain to verify purchase authenticity, then reliability of purchase reviews is improved, but device complexity and processing overhead increase
Solution Approach 1:
The system performs preliminary actions by issuing NFTs and recording purchase metadata on the blockchain at the time of purchase. This preliminary recording of authentic purchase information in the blockchain ledger enables future verification of review authenticity without requiring complex real-time processing, thus improving reliability while managing complexity through advance preparation.
2Reliability
If NFTs are issued and metadata are recorded on blockchain to guarantee purchase authenticity, then trustworthiness of information is improved, but loss of time in verification processes increases
Solution Approach 1:
The system creates a digital copy of the purchase receipt in the form of an NFT with metadata that is stored on the blockchain. This copy contains all essential verification information (purchase timestamp, product details, purchaser identity) that can be quickly accessed and verified by prospective purchasers, eliminating the need for time-consuming manual verification while maintaining high trustworthiness.
3Stability of the object's composition
If evaluation information is recorded in NFT metadata with purchaser verification, then product value preservation is improved, but manufacturing precision of data recording requirements increase
Solution Approach 1:
The smart contract system automatically performs purchaser verification and evaluation information recording without requiring external intervention. The system self-verifies the purchaser's identity through NFT ownership checks and automatically records evaluation information in the metadata with proper timestamps and identifiers, eliminating manual errors and ensuring high data recording precision while preserving product value through authentic review accumulation.
Data Source
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AI summary
Provided is a method of processing a non-fungible token (NFT) by an electronic device, the method including executing a smart contract to process an NFT associated with a receipt by a processor of the electronic device connected to a computer network including a blockchain network, and the smart contract includes one or more instructions, and the one or more instructions are configured to, when executed, cause the processor to identify a digital file regarding a receipt related to a purchase of a product and an issuance request for an NFT associated with the receipt, issue the NFT associated with the receipt, identify evaluation information about the product, and if a writer of the evaluation information about the product is a purchaser that performs the purchase of the product, record the evaluation information about the product in metadata of the NFT associated with the receipt.