Blockchain Supply Chain Management Project

🌐 Project Overview:

• This project focuses on implementing a robust and secure supply chain management system using blockchain technology.
• Smart contracts are employed to track the lifecycle of a product from manufacturing to customer delivery.
• The core security is established through the use of the keccak256() function, generating secure 256-bit hashes at each stage of the supply chain.

🏭 Manufacturing Stage:

• The product lifecycle begins with the manufactureProduct() function, initializing the product and storing manufacturer details in the blockchain.
• productHistory[] is initialized, and the current product data is linked to the manufacturer as the owner.

🛒 Third Party Purchase:

• Upon purchase by a third-party seller, the purchasedByThirdParty() function is triggered.
• Owner is set to the third party, and the current product data is added to the productHistory[].
• Simultaneously, the product is shipped by the manufacturer (shipToThirdParty()), and details of the third-party seller are recorded (receivedByThirdParty()).

🛍️ Online Customer Purchase:

• Online customer purchase involves a series of checkpoints:
• Third Party ships the product (shipByThirdParty()).
• Product is received by the delivery hub (receivedByDeliveryHub()).
• Owner is set to the delivery hub, customer details are stored, and the current state is added to productHistory[].
• Delivery hub ships the product (shipByDeliveryHub()).
• Product is received by the customer (receivedByCustomer()), and the final state is recorded in productHistory[].

🔐 Verification and Security:

• All juncture functions are executed only after complete verification of the product and productHistory[].
• Customer confirmation and acceptance are crucial before updating the state by clicking the receive button.

🔗 Data Retrieval Functions:

• Various functions (fetchProductPart1(), fetchProductPart2(), etc.) are provided to retrieve specific data about a product based on its UID and data type (current state or history).
• The use of Solidity cryptographic function keccak256() ensures the integrity and security of certificates generated at each shipping stage.

🚀 Immutable Smart Contracts:

• Smart contracts in the mainnet are immutable, contributing to the overall security of the supply chain setup.

📈 Data Integrity and Origin Tracking:

• productHistory[] serves as a comprehensive record, allowing stakeholders to track the origin and handling of the product at every stage.

🛡️ Mainnet Security:

• The mainnet security relies on the immutability of smart contracts and the secure 256-bit hashes generated by keccak256().
• Certificates generated at each shipping stage provide an additional layer of security in the supply chain.

🌟 Conclusion:

• This blockchain supply chain management project ensures transparency, security, and traceability throughout the product lifecycle, offering a reliable solution for businesses and consumers alike