ArPay Protocol Documentation

# Overview

ArPay is an eco-incentive settlement protocol that bridges the gap between Web3 sustainability sponsors and local communities. It enables the seamless conversion of on-chain environmental grants (USDC) to local fiat currency (IDR) without requiring receiving communities to interact with any cryptocurrency infrastructure.

# The Problem

Funding for local green initiatives faces a fundamental mismatch:

• Local Communities operate exclusively within banking systems that recognize legal tender.
• Eco-sponsors & DePIN networks possess value in programmable, globally verifiable tokens.
• No direct settlement exists that satisfies both parties without forcing communities to understand crypto wallets or adopt the other's infrastructure.

Current Solutions Fall Short

# The ArPay Solution

ArPay resolves this asymmetry through protocol-level separation of concerns:

# Key Features

⚡ Lightning Fast Settlement

Complete settlement cycle from grant signature to community bank credit in 3-6 seconds under nominal network conditions.

🔒 Non-Custodial & Trustless

• Sponsors maintain self-custody via standard Solana wallets
• Communities never touch crypto—receive only legal tender
• No intermediary can freeze or confiscate funds

🛡️ Atomic Settlement Guarantee

Formal guarantee: Either the community receives fiat OR the sponsor receives a full USDC refund. No intermediate state where funds are lost.

🏦 QRIS Native Integration

Leverages Indonesia's standardized QR settlement system (QRIS) with 30M+ community endpoints nationwide.

📊 Transparent & Auditable

All on-chain operations are publicly verifiable on Solana blockchain. Open-source smart contract code for ESG reporting.

# How It Works (Simplified)

sequenceDiagram
    participant Sponsor
    participant Wallet
    participant Solana
    participant Oracle
    participant FiatAPI
    participant Receiver

    Sponsor->>Wallet: Scan community QRIS code
    Wallet->>Sponsor: Show USDC grant amount
    Sponsor->>Solana: Sign & submit grant transaction
    Solana->>Solana: Lock USDC in PDA escrow
    Solana->>Oracle: Emit SettlementRequested event
    Oracle->>FiatAPI: POST /disbursements (IDR)
    FiatAPI->>Receiver: Transfer IDR via BI-FAST
    Receiver->>Receiver: Receive fiat reward in bank
    Oracle->>Solana: Release USDC from escrow

# Technical Highlights

# Performance Metrics

Under nominal conditions on Solana Mainnet-Beta with premium RPC:

# Target Market

Primary: Indonesia — 30M+ QRIS community endpoints, 270M+ population, high mobile penetration

Generalizable: Any market with:

• Standardized QR settlement scheme
• Licensed Fiat Disbursement API
• Instant fiat settlement network

# Use Cases

1. DePIN Sensor Rewards — Solar or waste-tracking sensors automatically trigger fiat payouts to host communities.
2. Carbon Credit Disbursements — Direct fiat incentives to individuals participating in recycling programs.
3. NGO Grant Distribution — Transparent, on-chain tracking of volunteer operational funds.
4. Eco-Tourism — Visitors sponsor local conservation efforts effortlessly via QRIS.

# Getting Started

# Project Status

# Open Source

ArPay is open-source and contributions are welcome:

• Smart Contract: github.com/arpay/smart-contract
• Frontend: github.com/arpay/frontend
• Oracle Bridge: github.com/arpay/oracle-bridge

# Support & Contact

• Website: www.arpay.my.id
• Email: arshaka@zohomail.com
• Documentation: You're reading it! 📖
• Discord: Join our community
• Twitter: @ArPayProtocol