Save-Purchase

Description

The purchase data generated at kiosks must be recorded and made public on both the blockchain and AWS S3 so that validators can verify the purchase history. The diagram above illustrates how transactions generated by the payment system are stored on the blockchain and AWS S3. The smart contract on the blockchain stores a list of data, while the actual data is stored in AWS S3, accessible via links recorded in the contract. Purchase data is processed and stored in the form of blockchain records, making it impossible to modify already published data.

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