Case Studies

Challenge

The EU Ecodesign for Sustainable Products Regulation (ESPR) mandates Digital Product Passports (DPP) for a growing range of product categories. Manufacturers and importers need immutable, cross-border provenance records that satisfy both regulatory requirements and consumer expectations for transparency — but existing supply chain systems lack the interoperability and trust guarantees that DPPs demand.

Solution

ProjectSCT is a production-grade supply chain traceability platform that assigns each individual physical unit — not a batch or SKU, but every single item — its own tamper-proof Digital Product Passport on the Sui blockchain. Built with Move smart contracts and GS1 Digital Link standards, it connects each product to its unique on-chain identity via QR codes and NFC tags, enabling end-to-end provenance tracking from raw materials to the consumer's hands.

The platform is powered by the GRI stablecoin (BTC-backed, 100K GRI/BTC peg) for on-chain fee collection, using a simplified flat-fee model with a single DPP registry. Clients pay a fixed GRI amount per item traced; all blockchain gas costs are absorbed by the platform.

The architecture was designed using the TOGAF Architecture Development Method (ADM), ensuring alignment between business requirements, regulatory compliance, and technical implementation across all stakeholder groups.

Platform Architecture

• B2C Portal — Consumer-facing product passport with journey maps, ESG metrics, certification badges, and NFC authenticity verification
• B2B Dashboard — Product registration, supply chain event tracking, QR/NFC provisioning, multi-tenant company and store management
• REST API — Machine-to-machine integration with HMAC-SHA256 authentication, full CRUD, QR generation, NFC provisioning, and SSCC lookup
• Admin Console — GRI token management, DPP fee dashboard, on-chain registry operations via Phantom wallet, API key management, database browser
• 3PL Integration — Third-party logistics tracking with warehouse management and chain-of-custody

Technical Highlights

• Simplified Move smart contract: 1 registry, 9 entry functions, flat GRI fee model with admin capability path for fee-free platform operations
• Individual item-level traceability: each unit gets a unique Sui Object ID, QR code, and optional NFC tag — no two passports are alike
• GRI stablecoin with BTC backing for predictable per-item pricing across three service tiers (Starter, Professional, Enterprise)
• Multi-tenant architecture with per-company stores, Ed25519 wallet generation, and Fernet-encrypted key storage
• REST API with HMAC-SHA256 request signing, 5-minute replay protection, and company-scoped access control
• Full CI/CD pipeline: GitHub Actions builds Docker images, pushes to GHCR, deploys to production VPS with Caddy reverse proxy
• NFC tap-to-verify authentication flow with Web NFC API provisioning and cryptographic tag verification
• DPP-ready data model compliant with EU ESPR requirements and GS1 Digital Link standards

Challenge

Dutch consumers increasingly want access to locally sourced, seasonal produce, but lack a convenient way to discover what's in season and order directly from regional suppliers. Existing platforms don't prioritize seasonality or provide the seamless, mobile-friendly checkout experience that modern consumers expect.

Solution

Mijn Seizoen is a seasonal fruit and vegetables e-commerce platform designed for the Dutch market. Built with a lightweight, modern stack, it provides a fast, intuitive shopping experience that adapts to what's naturally available each season.

The platform uses HTMX for dynamic interactions without heavy JavaScript frameworks, keeping the experience fast and accessible. Payments are processed via Mollie iDEAL, the most popular payment method in the Netherlands.

Deliverables

• Full-stack web application (Flask + SQLite)
• Seasonal product catalog with availability logic
• HTMX-powered dynamic UI for responsive shopping
• Mollie iDEAL payment integration
• Mobile-responsive design optimized for on-the-go ordering
• Admin dashboard for product and order management