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Supported Chains and Technologies

🌐 Supported Chains and Technologies​

Rahat is designed to be a chain-agnostic platform, enabling humanitarian organizations and communities to deploy financial access solutions on the most suitable blockchain infrastructure for their context. Currently, Rahat supports EVM-compatible blockchains and Stellar, providing flexibility for both programmability and cost-efficiency.

✅ Supported Blockchain Networks​

  • EVM-Compatible Chains Rahat supports deployment on any Ethereum Virtual Machine (EVM) compatible blockchain, including but not limited to:

    • Ethereum
    • Polygon
    • Avalanche
    • Binance Smart Chain (BSC)
    • Local/Test Networks (e.g., Hardhat, Ganache, Goerli)

    These chains enable smart contract programmability, robust tooling, and wide wallet support, making them suitable for diverse use cases—from local pilots to national-scale implementations.

  • Stellar Known for fast and low-cost transactions, Stellar is ideal for cross-border payments and scalable cash assistance. Rahat uses Stellar’s core capabilities for asset issuance and transfers and is integrating Soroban, Stellar’s native smart contract platform, for programmable aid workflows.

🔧 Core Technologies and Tools​

Smart Contracts​

  • Solidity for EVM chains
  • Rust (via Soroban) for Stellar

Rahat’s smart contracts manage fund disbursement, token minting, vendor payments, and beneficiary validation.

Blockchain Integration​

  • ethers.js and web3.js for interacting with EVM chains
  • Stellar SDKs and Soroban CLI for Stellar-based operations

Backend Stack​

  • NestJS for service-oriented backend architecture
  • Prisma ORM for database interactions
  • PostgreSQL and Redis for persistence and caching

Data Indexing​

  • The Graph protocol is used to index blockchain events for fast, structured access to on-chain data.

Identity & Permissions​

  • Integration of Decentralized Identifiers (DIDs) and Verifiable Credentials (VCs) is underway for secure, portable identity.
  • Role-based access control (RBAC) with project-level granularity ensures operational security.

User & Communication Interfaces​

  • Twilio and Asterisk IVR for SMS/voice interaction
  • Chatbot and low-tech interfaces designed for accessibility in low-connectivity areas

Wallet & Offramp Support​

  • Supports custodial and non-custodial wallets
  • Ongoing integration with offramp services like Kotani Pay and Circle for cash-out options