SolanaFlow – Cross-Chain RWA Marketplace

🌟 Overview
SolanaFlow is a production-ready cross-chain marketplace for Real World Assets (RWA) that enables users to tokenize, buy, sell, and fractionalize real-world assets across multiple blockchain networks including Solana with MetaMask wallet support. Built with institutional-grade security and compliance features.

🎯 Key Features

• Cross-Chain Compatibility: Ethereum, Polygon, BSC, OneChain, Solana (via MetaMask Snap integration)

• Multi-Asset Support: Real estate, carbon credits, precious metals, commodities, and more

• Fractional Ownership: Split high-value assets into affordable fractions

• Advanced Marketplace: Fixed price sales, auctions, and fractional trading

• Compliance Ready: Built-in KYC/AML compliance and regulatory frameworks

• Upgradeable Contracts: UUPS proxy pattern for future enhancements

• Multi-Wallet Support: MetaMask, WalletConnect, OneChain wallet, MetaMask for Solana

🏗️ Architecture

Smart Contracts

contracts/
├── core/
│   └── RWARegistry.sol          # Central asset registry
├── tokens/
│   ├── RWAToken.sol             # ERC721 RWA NFTs
│   └── RWAFractional.sol        # ERC20 fractional tokens
├── bridge/
│   └── CrossChainBridge.sol     # Cross-chain asset transfers (Ethereum ↔ Solana included)
├── marketplace/
│   └── RWAMarketplace.sol       # Trading marketplace
└── interfaces/
    └── IRWARegistry.sol         # Registry interface

Frontend

src/
├── app/
│   ├── page.tsx
│   ├── marketplace/page.tsx
│   ├── layout.tsx
│   └── providers.tsx
└── config/
    └── contracts-*.json

🚀 Quick Start

Additional Requirement for Solana

• Install MetaMask Solana Snap

• Fund Solana devnet wallet with SOL

Deployment Example:

# Deploy to Solana (via Anchor/Metaplex bridge contracts)
npm run deploy:solana

🔧 Configuration

Environment Variables

# Solana Configuration
SOLANA_RPC_DEVNET=https://api.devnet.solana.com
SOLANA_RPC_MAINNET=https://api.mainnet-beta.solana.com

Supported Networks

🌉 Cross-Chain Bridge

Now supports Solana via MetaMask Snap

• NFT transfers Ethereum ↔ Solana

• Fractional tokens bridged as wrapped SPL tokens

• Asset metadata sync across EVM & Solana

• Cross-chain listings visible across EVM + Solana

🏪 Marketplace Features

• Fixed Price, Auctions, Fractional Trading

• Cross-Chain Listings with Solana support

• Payments:

  • Native tokens (ETH, MATIC, BNB, OCT, SOL)

  • Stablecoins (USDC, USDT, DAI – including SPL versions on Solana)

🔐 Security Features

• Smart contract security (UUPS, RBAC, Reentrancy Guards)

• Solana programs audited via Anchor framework

• MetaMask Snap isolation for Solana access