The problem Arisan Aman solves

🛡️ Arisan Aman: Decentralizing Trust in Social Savings

In Indonesia, Arisan is a cultural cornerstone of social saving, yet it remains tethered to manual, high-risk processes. Arisan Aman moves this tradition onto Base, replacing "social promises" with immutable smart contracts.

🚀 How Arisan Aman Makes Life Easier & Safer

1. 🛑 Elimination of "Runaway" Risk

• The Problem: In traditional Arisan, a member or organizer (penyelenggara) can disappear with the pot, leaving others with no recourse.
• The Solution: All funds are locked in non-custodial smart contracts on Base. The system—not a person—governs the distribution, ensuring the winner receives their payout automatically and transparently.

2. ⚡ Frictionless Automated Collections

• The Problem: Chasing 30 different people for manual transfers via WhatsApp is a nightmare for organizers.
• The Solution: Integrated with IDRX, our platform allows for automated, one-click contributions. No more "reminding" members or verifying manual bank screenshots; the blockchain acts as the ultimate source of truth.

3. 📈 Verifiable Onchain Reputation

• The Problem: Good Arisan participants get no "credit" for years of perfect payments.
• The Solution: Our Reputation Registry tracks payment history. Every successful cycle builds a user’s onchain creditworthiness, potentially unlocking future DeFi opportunities or higher-tier Arisan circles.

4. 🔍 Radical Transparency

• The Problem: Members often doubt if the "random draw" for the winner was actually fair or if there are hidden fees.
• The Solution: Every transaction, participant, and winner-selection is visible on the Base Explorer. You don't have to "trust" the organizer; you just have to verify the code.

5. 🌏 Borderless Social Finance

• The Problem: You are usually limited to your physical neighborhood or office.
• The Solution: By using Base, Arisan Aman allows trusted communities—scattered across Indonesia or the globe—to save together. Whether you are in Jakarta or Jayapura, if you have a wallet and IDRX, you are in.

🛠️ Key Technical Advantages

• 🔵 Base L2: High-speed transactions with fees so low they don't eat into the savings pot.
• 🇮🇩 IDRX Integration: Participants save in a currency they understand (Rupiah-pegged), removing crypto volatility.
• 🏗️ Factory Architecture: Anyone can deploy a secure, custom Arisan group for their community in seconds.

🔗 Project Resources & Links

• 🌐 Live DApp: arisan-aman.vercel.app
• 💻 GitHub Repository: github.com/gahzaharrifin-coder/ArisanAman
• 📊 Pitch Deck: View on Canva

📜 Verified Smart Contracts (Base Sepolia)

📝 Note on Transparency: In full alignment with the Code of Conduct, we would like to disclose that this project has been previously submitted to another hackathon.

Challenges we ran into

🚧 Challenges We Ran Into

Building a social-financial hybrid onchain presented unique hurdles, particularly in balancing traditional Indonesian customs with blockchain logic.

1. ⚖️ The "Late Payment" Paradox

• The Hurdle: In traditional Arisan, people are occasionally late due to real-life issues. However, smart contracts are rigid. We struggled with how to handle late contributions without breaking the "Pot" for the winner.
• The Fix: We implemented a Grace Period logic in our smart contracts linked to the Reputation Registry. If a user pays within the grace period, the cycle continues, but their onchain reputation score takes a minor hit, mimicking the social accountability of a real-life circle.

2. 🧩 Gas Fee Optimization for Micro-Transactions

• The Hurdle: Since Arisan often involves small, frequent contributions, even low gas fees can add up over a 12-month cycle.
• The Fix: By deploying on Base, we leveraged its ultra-low fee structure. We further optimized the Arisan Factory to minimize state changes, ensuring that joining a group or claiming a payout costs only a few cents, making it viable for retail users.

3. 🏦 Integrating IDRX with Smart Contract Logic

• The Hurdle: Ensuring seamless interaction between the IDRX token and our custom logic for distribution required precise decimal handling to ensure no "dust" was left in the contract after a winner claimed the pot.
• The Fix: We conducted extensive testing on Base Sepolia using a Mock IDRX token, refining our math logic to ensure 100% of the collected pool is distributed accurately to the winner every single cycle.

💡 How Arisan Aman Makes Life Easier & Safer

1. 🤖 Automated Collection & Distribution

• Before: Manual collection, chasing late payments via chat, and risky physical cash handling.
• With Arisan Aman: Instant distribution on payout day via smart contracts. No physical meetings required.
• Example: An office arisan with 30 members saves roughly 2 hours per month per person in coordination and collection time.

2. 🌍 Flexible Participation

• Before: Geographic constraints; you had to be physically present at meetings or live in the same neighborhood.
• With Arisan Aman: Join from anywhere in Indonesia. Participate in multiple circles (family, office, hobbyists) simultaneously with adjustable contribution levels.
• Example: A Jakarta-based worker can participate in their hometown arisan in Sumatra and a hobbyist arisan globally at the same time.

3. 📅 Intelligent Scheduling & Logic

• Before: Manual calendars, forgotten dates, and awkward "Who's next?" disputes.
• With Arisan Aman: Smart scheduling based on group preferences. The contract transparently dictates the order, and onchain events trigger notifications.
• Example: The system ensures a transparent, tamper-proof payout order that everyone can verify before the first payment is even made.

4. 📒 Permanent Digital Record Keeping

• Before: Handwritten notebooks, lost records, and disputes over who has paid what.
• With Arisan Aman: A permanent digital ledger on Base. Instant payment history and immutable proof of participation.
• Example: A small business owner can use their perfect Arisan Aman payment history as an informal "Onchain CV" to prove financial discipline.

5. 🔗 Seamless Currency Integration

• Before: Constant switching between cash, bank transfers, and e-wallets, leading to reconciliation headaches.
• With Arisan Aman: Direct utility through IDRX. Contributions stay in a stable, Rupiah-pegged format, ensuring the value of the "Pot" is exactly what members expect.
• Example: Funds are settled instantly onchain; winners receive their IDRX payout at the exact moment the cycle closes.