A blockchain-based supply chain transparency solution designed for the automotive industry. The system provides end-to-end traceability of automotive parts from manufacturing to final assembly, ensuring authenticity, preventing counterfeiting, and enabling rapid recall processes.
Built on Ethereum blockchain with smart contracts for immutable record keeping, the platform integrates with existing ERP systems and provides real-time tracking through QR codes and IoT sensors. Stakeholders can verify part authenticity, track manufacturing processes, and access complete audit trails.
┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ Manufacturer │ │ Supplier │ │ Distributor │
│ │ │ │ │ │
│ • Part Creation│◄──►│ • Component │◄──►│ • Logistics │
│ • QR Generation│ │ Assembly │ │ • Warehousing │
│ • Quality Check│ │ • Testing │ │ • Shipping │
└─────────────────┘ └─────────────────┘ └─────────────────┘
│ │ │
▼ ▼ ▼
┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ Smart Contracts│ │ IPFS Storage │ │ IoT Sensors │
│ │ │ │ │ │
│ • Part Registry│ │ • Documents │ │ • Temperature │
│ • Ownership │ │ • Images │ │ • Humidity │
│ • Transfers │ │ • Certificates │ │ • Location │
│ • Verification │ │ • Test Results │ │ • Shock/Vibr. │
└─────────────────┘ └─────────────────┘ └─────────────────┘
│ │ │
▼ ▼ ▼
┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ Web Dashboard │ │ Mobile App │ │ API Gateway │
│ │ │ │ │ │
│ • Admin Panel │ │ • QR Scanner │ │ • ERP Integr. │
│ • Analytics │ │ • Part Lookup │ │ • Third Party │
│ • Reports │ │ • Verification │ │ • Webhooks │
└─────────────────┘ └─────────────────┘ └─────────────────┘
Each automotive part receives a unique blockchain-based identity with tamper-proof QR codes.
Monitor parts throughout the supply chain with IoT sensors and GPS tracking.
Immutable quality records and compliance documentation stored on blockchain.
Rapid identification and tracking of affected parts during recall events.
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
contract PartRegistry {
struct Part {
string partNumber;
string manufacturer;
uint256 manufactureDate;
string ipfsHash;
address currentOwner;
PartStatus status;
string[] qualityCertificates;
}
enum PartStatus { Manufactured, InTransit, Delivered, Installed, Recalled }
mapping(bytes32 => Part) public parts;
mapping(address => bool) public authorizedManufacturers;
event PartCreated(bytes32 indexed partId, string partNumber, address manufacturer);
event PartTransferred(bytes32 indexed partId, address from, address to);
event QualityCheckAdded(bytes32 indexed partId, string certificateHash);
function createPart(
string memory _partNumber,
string memory _ipfsHash,
string[] memory _certificates
) external onlyAuthorizedManufacturer returns (bytes32) {
bytes32 partId = keccak256(abi.encodePacked(_partNumber, block.timestamp, msg.sender));
parts[partId] = Part({
partNumber: _partNumber,
manufacturer: msg.sender,
manufactureDate: block.timestamp,
ipfsHash: _ipfsHash,
currentOwner: msg.sender,
status: PartStatus.Manufactured,
qualityCertificates: _certificates
});
emit PartCreated(partId, _partNumber, msg.sender);
return partId;
}
function transferPart(bytes32 _partId, address _newOwner) external {
require(parts[_partId].currentOwner == msg.sender, "Not authorized");
require(_newOwner != address(0), "Invalid address");
address previousOwner = parts[_partId].currentOwner;
parts[_partId].currentOwner = _newOwner;
parts[_partId].status = PartStatus.InTransit;
emit PartTransferred(_partId, previousOwner, _newOwner);
}
}