VaultSyncX

VaultSyncX is a sophisticated cross-chain DeFi and portfolio management platform that provides users with a unified interface to manage their cryptocurrency assets across multiple blockchain networks. The platform combines portfolio tracking, cross-chain swapping, and comparing token visualization capabilities into a single, seamless application.

Core Functionality: 1.Multi-Chain Portfolio Dashboard Comprehensive Asset Tracking: Aggregates and displays token balances across multiple blockchain networks (Ethereum, Polygon, Arbitrum, Base, etc.) Real-Time Portfolio Valuation: Fetches live token prices and calculates total portfolio value in USD Interactive Asset Allocation Visualization: Features dynamic pie charts showing portfolio distribution by tokens and blockchain networks Cross-Chain Balance Aggregation: Combines identical tokens from different chains for a unified view of holdings

2.Advanced Cross-Chain Swapping 1inch Fusion+ Integration: Leverages 1inch's cutting-edge Fusion+ protocol for cross-chain token swaps Intelligent Order Management: Implements sophisticated hashlock mechanisms for secure, trustless cross-chain transactions Multi-Step Transaction Flow: Token approval management with unlimited/exact amount options Order creation and cryptographic signing Real-time order status monitoring (Processing → Signed → Submitted → Placed → Confirmed) Automated secret revelation for order completion Smart Quote System: Fetches real-time quotes with price impact analysis and gas cost estimation

1. Technologies used: Core Architecture:

React 18 + Typescript React routers Tailwind css

Blockchain Integration Stack Wagmi v2 for Ethereum interactions and contract calls WalletConnect v3 (AppKit) for universal wallet connectivity Viem for low-level Ethereum utilities and BigInt handling

1inch Fusion+ API Integration:

Quote API for real-time cross-chain swap pricing Order Builder for creating cryptographically signed orders Relayer Network for order execution and monitoring Secret Management for atomic swap completion

2.How are they pieced together? Aim was to implement a Multichain Portfolio management and cross chain swap.

Used WallectConnect v3 for wallet connectivity, wagmi to access chains and networks address. And then used 1inch's API (portfolio, balance, supported tokens api's) to create a Multichain Portfolio dashboard.

For cross chain swap, used various apis from cross chain swaps swagger kit and implemented a flow given below: Quote -> Build Order -> Sign user signature -> Submit order -> check for order's status -> Submit the secret

3.If you used any partner technologies, how did it benefit your project? Only made use of 1inch fusion plus api here.

4.Did you do anything particularly hacky that's notable and worth mentioning?

For Cross chain swaps, the most hacky but clever part I did is the cross-chain atomic swap implementation that combines 1inch's Fusion+ protocol with custom hashlock cryptography, enabling trustless swaps without traditional bridges or custodial services.

For dashboard, added a section called Aggregated tokens where I Aggregates identical tokens (e.g., USDC on Ethereum + Polygon) into single entries