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

Network	Chain ID	RPC Endpoint	Native Token
Ethereum	1	Infura	ETH
Polygon	137	Infura	MATIC
BSC	56	Public RPC	BNB
OneChain Testnet	1001	https://rpc-testnet.onelabs.cc:443	OCT
OneChain Mainnet	1000	https://rpc.mainnet.onelabs.cc:443	OCT
Solana Devnet	-	https://api.devnet.solana.com	SOL
Solana Mainnet	-	https://api.mainnet-beta.solana.com	SOL

🌉 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

Added Solana support with MetaMask Snap integration for seamless wallet experience Smart Contracts Deployed RWA Registry (ERC721) + Fractional Tokens (ERC20/SPL) Implemented Cross-Chain Bridge (Ethereum ↔ Solana) for NFT & token transfers Built Upgradeable Marketplace Contracts with UUPS proxy Cross-Chain Bridge Demo Locked NFT on Ethereum Generated bridge transaction Minted wrapped NFT on Solana via Anchor program Verified transaction flow with MetaMask + Solana Snap Frontend Development Built a Next.js Marketplace UI (listings, auctions, fractional trading) Integrated MetaMask for Solana + Web3 providers Configured contract JSONs for multi-chain deployment Compliance & Security KYC/AML integration placeholders in onboarding flow Role-based access control for admin functions Onboarding resilience fixes (no hangs, safe defaults) Registering a Real-World Asset (RWA) in registry Minting NFT + fractional tokens Bridging Ethereum NFT → Solana Buying fractions with SOL via MetaMask End-to-End user onboarding with region/KYC detection

SolanaFlow

Videos

Tech Stack

Description