Product Supply Chain Traceability with Blockchain and QR

System Design · sequence diagram · unknown license

Illustrates a product's journey through a supply chain, from farmer to customer, leveraging blockchain for immutable record-keeping and QR codes for easy t

Source: https://github.com/SanTiwari07/KrishiSetu/blob/bcd0405aa8353b20282b34f9c3478e444e7996cf/README/flowchart.md
Curated by SanTiwari07
Supply Chain Blockchain QR Code Traceability Logistics Product Tracking Decentralized

Mermaid source

sequenceDiagram
    participant F as Farmer
    participant BC as Blockchain
    participant QR as QR Service
    participant D as Distributor
    participant R as Retailer
    participant C as Customer
    
    F->>BC: Register Product
    BC->>F: Return Product ID
    F->>QR: Generate QR Code
    QR->>F: QR Code Image
    
    F->>D: Physical Product + QR
    D->>QR: Scan QR Code
    QR->>D: Product ID
    D->>BC: Update as Distributor
    
    D->>R: Product + QR
    R->>QR: Scan QR Code
    QR->>R: Product ID
    R->>BC: Update as Retailer
    
    R->>C: Product + QR
    C->>QR: Scan QR Code
    QR->>C: Product ID
    C->>BC: Get Complete History
    BC->>C: Full Supply Chain Data

What this diagram shows

This sequence diagram details the end-to-end process of tracking a product in a supply chain. It begins with a farmer registering a product on a blockchain, receiving a unique product ID, and generating a QR code. As the product moves from the farmer to a distributor, then to a retailer, and finally to a customer, each participant scans the QR code to retrieve the product ID and update its status on the blockchain. The customer can then scan the QR code to retrieve the complete, immutable history of the product from the blockchain.

When to use it

Use this diagram to visualize and design systems for supply chain transparency, product authentication, anti-counterfeiting, or food traceability. It's ideal for demonstrating how blockchain and QR codes can enhance trust and accountability in product distribution networks.

How to adapt it for your project

This diagram can be adapted by adding more participants (e.g., manufacturers, logistics providers, customs). You could also introduce smart contracts for automated transfers of ownership or payments. Different types of blockchain interactions (e.g., querying for specific attributes, adding batch information) could be detailed. Error handling or dispute resolution flows could also be integrated.

Key concepts