[Frontend/Contract] Build Supply Chain Tracking System with Provenance Verification and Quality Attestation

[ayomideadeniran]

📋 Overview

Labels: smart-contract complexity: hard eta-2-days supply-chain provenance tracking
Contributor Persona: Supply Chain Developer (Requires expertise in tracking systems, provenance verification, and attestation mechanisms)

🎯 Problem Statement

Product authenticity and supply chain transparency are critical but difficult to verify. The platform needs an on-chain supply chain tracking system with provenance verification and quality attestation at each stage.

📍 Current State

• No supply chain tracking
• Missing provenance verification
• Manual quality checks only
• No transparency in product journey

✨ Desired State

• Complete product lifecycle tracking on-chain
• Verified provenance at each supply chain stage
• Quality attestation by certified parties
• Frontend for tracking and verification

🛠 Technical Requirements

• Product registration and tracking
• Stage-by-stage attestation
• QR code/NFC integration
• Verification mechanism

📝 Task Breakdown

Phase 1: Product Registration (0.5 days)

• Implement product creation with unique ID
• Create supply chain stages definition
• Add initial provenance recording
• Build product metadata storage

Phase 2: Tracking System (0.5 days)

• Implement stage transition recording
• Create location and timestamp tracking
• Add custody transfer mechanism
• Build chain of custody verification

Phase 3: Quality Attestation (0.5 days)

• Implement quality check recording
• Create certified attester roles
• Add attestation signatures
• Build quality score calculation

Phase 4: Frontend Interface (0.5 days)

• Create product tracking dashboard
• Build QR code scanner integration
• Add provenance timeline visualization
• Implement verification interface

✅ Acceptance Criteria

• Products tracked through all stages
• Provenance verifiable on-chain
• Quality attestations recorded
• Chain of custody maintained
• Frontend displays tracking data
• All operations emit proper events

📁 Files to Create

• contracts/src/supply_chain_tracker.rs
• contracts/src/quality_attestation.rs
• frontend/src/components/supplychain/TrackingDashboard.tsx

📚 Resources

• Supply Chain on Blockchain
• Provenance Tracking
• Product Authentication

🎯 Success Metrics

• Product registration <3 seconds
• Stage tracking <2 seconds
• Verification instant
• Support for 10000+ products