DIEM Hackathon

DIEM Hackathon is the ultimate gathering for tech enthusiasts and innovators!

Join us at Impact Hub Athens - Coworking & Events space for 3days of creativity and collaboration. Whether you're an master's student or a PhD candidate, this event is perfect for anyone looking to unleash their creativity and build something amazing.

Get ready to network, learn new skills, and work on exciting projects with like-minded individuals. Don't miss out on this opportunity to showcase your talents and potentially win some cool prizes! See you there!

DIEM Hackathon is co-organized by Ministry of Digital Governance & YET.

Working language will be English.

We've put together an incredible prize pool for our champions, featuring a massive €3000 in rewards!

Challenges

Challenge Theme: Supply Chain

Challenge Supply Chain 01: Smart Homes, Smart Energy

We propose solutions that transform electricity consumers into prosumers, actively participating in energy production and management. By using home solar panels, small wind turbines, batteries, electric vehicles, and other energy resources, consumers can store electricity during off-peak hours or when renewable sources generate excess power.

Dynamic pricing enables prosumers to sell stored electricity back to the grid or directly to other consumers when demand (and price) is high, creating an additional income stream. This approach promotes efficient energy use, balances supply and demand, strengthens grid resilience, and accelerates the adoption of renewable energy. By making electricity consumption interactive and income-generating, households benefit financially while contributing to a more sustainable energy system.

The challenge seeks solutions that combine smart energy storage, real-time pricing, and digital platforms to empower prosumers, optimize electricity flows, and make energy trading safe, reliable, and user-friendly.

Minimum Implementation Requirements:

● A way for households to track and control their energy use and storage (e.g., app or dashboard).

● Basic mechanism to buy/sell or share stored electricity using flexible pricing.

● Simple, secure interface that anyone can use safely.

Challenge Supply Chain 02: Crowd Shipping in Last-Mile Logistics

We propose new services for urban logistics to reduce congestion, lower costs, and improve sustainability. One promising approach is crowd shipping, where everyday people deliver packages by acting as couriers during their usual trips. Using mobile platforms, this approach connects delivery needs with individuals already traveling in the right direction, turning routine trips into delivery opportunities.

Crowd shipping offers flexibility and scalability, supporting companies to handle demand easily, while giving consumers faster and more convenient options. It also eases the workload on courier services and contributes to greener cities by making better use of existing travel patterns.

However, several challenges must be addressed. Safety and reliability are essential to ensure packages arrive securely and on time. Privacy must be protected for both senders and carriers. Finally, legal and labor rules must be respected to guarantee fair and compliant practices. This challenge seeks solutions to make crowd shipping secure, efficient, and sustainable.

Minimum Implementation Requirements:

● Matching making platform: A system (e.g., mobile app, platform) that connects senders with crowd couriers and manages deliveries.

● Safety and Reliability Measures: Clear protocols to ensure secure handling, timely delivery, and trustworthy participation.

● Compliance and Privacy: Mechanisms to protect personal data, follow legal regulations, and ensure fair labor practices.

Challenge Theme: Health

Challenge Health 01: Patient Consent & Data Sharing

Managing patient consent is a fundamental challenge in healthcare. Patients often lack visibility and control over who can access their medical records. Consent may be forgotten, revoked too late, or misused. Blockchain ensures transparency, immutability, and patient ownership of consent records, making the process trustworthy and auditable.

The application will be a blockchain-based consent management platform. Patients can create an account, register their identity, and grant or revoke consent for specific healthcare providers or researchers. The system will maintain an immutable consent history, with options for time-limited permissions. Healthcare providers will use the app to request access and view only what patients explicitly allow.

In practice:

● A patient logs in, sees their providers, and grants “Dr. X” access to their cardiology records for 30 days.

● Dr. X logs in and can view the access granted.

● If the patient revokes access before expiry, the provider loses permission instantly.

● The blockchain maintains a permanent record of all consent actions.

Minimum Implementation Requirements:

Smart Contract Functionality

● Register patients with blockchain-based identities.

● Grant/revoke consent with time-based rules.

● Record all actions (grant, revoke, expiry) immutably.

● Ensure providers can only access data if consent is valid.

UI Functionality

● Patient dashboard: manage consents, view current permissions, see consent history.

● Provider dashboard: request access, view granted permissions.

● Clear visualization (e.g., timeline or table) of consent changes.

Challenge Health 02: Blockchain-based Medical Insurance Claims

Medical insurance claims are often slow, expensive, and prone to fraud. Patients face long delays, insurers deal with fake claims, and providers struggle with paperwork. Blockchain smart contracts can automate claims verification, reducing disputes and ensuring faster, more transparent payouts.

The application will be a decentralized insurance claim processing system. Patients submit treatment claims, which are validated automatically by smart contracts against policy rules. Providers confirm treatment authenticity, and insurers approve or reject claims. Approved claims trigger automated payouts.

In practice:

● A patient uploads a claim for a medical consultation costing €200 eg.

● The provider verifies the treatment entry.

● The smart contract checks whether the claim is covered under the patient’s policy.

● If valid, the contract automatically approves and schedules payment.

● If invalid (e.g., duplicate claim), the system rejects it with a reason.

Minimum Implementation Requirements:

Smart Contract Functionality

● Patient submits claim with treatment details and cost.

● Contract verifies claim validity against rules (e.g., coverage, limits).

● Automatic approval/rejection.

● Trigger payout for approved claims.

UI Functionality

● Patient portal: submit claims, track status, view claim history.

● Provider portal: validate treatment details, confirm authenticity.

● Insurer dashboard: configure rules, review flagged claims, monitor payouts.

Challenge Theme: I.D. & Tokenization

Challenge ID 01: Fractional Property Ownership Platform

Real estate remains one of the most illiquid asset classes, with high barriers to entry preventing smaller investors from entering into property markets. Your goal is to build a blockchain-based platform that enables property ownership through tokenisation. Create a solution where investors can purchase fractional shares of real-estate, trade them on secondary markets, and receive automated rental income distributions proportional to their holdings.

Address critical challenges including property valuation verification, legal ownership representation, investor accreditation, and liquidity provision. The solution should be tailored for investors not familiarised with blockchain technology. Consider how smart contracts can automate rent collection, distribution, and governance decisions. Your MVP should demonstrate the complete lifecycle: property tokenization, real estate onboarding, fractional sale, secondary trading, and income distribution.

Minimum implementation requirements:

● User interface demonstrating the complete user journey: onboard real estate into the platform, search of properties, view ownership portfolio, purchase fractional tokens, trade tokens on secondary market, and receive rental payments.

● Design of smart contract with property tokenisation (ERC-20 or ERC-1400), automated rental income distribution to token holders, and basic governance mechanism for property related decisions.

● KYC/AML proposal to verify investor accreditation status and ensure regulatory compliance before allowing token purchases or trades.

Challenge ID 02: Fine Art Investment Marketplace

Fine art investment has traditionally been exclusive to wealthy collectors, with individual pieces costing millions and the market plagued by illiquidity, and authentication fraud.

Your challenge is to build a blockchain platform that democratizes access to blue-chip artwork through fractional tokenisation. Create a solution enabling investors to purchase shares in valuable paintings, sculptures, or collectibles starting from minimal amounts.

This platform must solve critical art market challenges: immutable provenance records, integrating professional appraisals, managing secure physical custody and insurance, and providing liquidity through secondary market trading. Propose how token holders participate in governance decisions like artwork sales or museum loan approvals, and how they benefit from appreciation or exhibition income. The solution should bridge the physical art world with digital ownership, making investments accessible for investors not familiarised with blockchain technology while maintaining the authenticity, security, and cultural significance of fine art.

Minimum implementation requirements:

● User interface offering the complete investment journey: browse artworks with high-quality images and provenance details, purchase fractional tokens, view portfolio and ownership percentages, participate in governance votes, and track artwork valuation and revenue distributions

● Design of smart contract implementing fractional art tokenization (ERC-1155 or ERC-721 with fractionalization), automated revenue distribution from exhibitions/sales, and governance mechanism for major decisions (e.g. sale approval, loan agreements)

● Provenance and authenticity tracking method creating immutable records of artwork ownership history, certificate of authenticity integration, condition reports, and exhibition history

Hackathon Lab

Blockchain Smart Contract Lab Hands-On

This 3-hour hands-on lab introduces participants to the fundamentals of blockchain and smart contracts, focusing on practical implementation with minimal prior programming experience required. Using the Remix IDE, participants will collaboratively build and deploy a simple smart contract, step by step. The session will then extend to connecting the contract with an external user interface, demonstrating how blockchain applications interact with real-world front ends. By the end of the workshop, attendees will have gained practical insights into smart contract development, deployment, and integration, providing a strong foundation for further exploration in decentralized applications (dApps).