Enterprise Custodial USDC Wallet with Forex Trading
Full-stack custodial cryptocurrency wallet on Base network with HD address generation, ledger-first accounting, dual-control withdrawals, and integrated Avantis Forex perpetual trading.
Build a production-grade custodial wallet that maintains institutional-level security while providing seamless UX for cryptocurrency deposits, withdrawals, and leveraged Forex trading — all without requiring users to manage their own keys.
Developed a comprehensive custodial platform with HD wallet architecture for unique deposit addresses, double-entry ledger accounting, dual-control withdrawal approvals, and integrated Avantis SDK for 500x leveraged Forex trading on 18 pairs. Implemented isolated signer service with HMAC protection for secure key management.
Comprehensive functionality delivering real business value
Full custodial wallet service on Base L2 with USDC support. Users deposit, trade, and withdraw without managing private keys
BIP-39/BIP-32 HD wallet derivation generates unique deposit addresses for each user while maintaining centralized control
Double-entry bookkeeping with immutable ledger entries. Every transaction creates paired debit/credit records for complete auditability
Integrated Avantis perpetual trading with 18 Forex pairs. Real-time price feeds, market hours enforcement, and up to 500x leverage
Withdrawal security requiring 2 separate admin approvals before execution. Prevents single-point-of-failure fraud scenarios
Automated background worker sweeps confirmed deposits from user addresses to master hot wallet. Manages gas refills automatically
Live profit/loss tracking for all open positions. WebSocket price feeds update every second for accurate portfolio valuation
Comprehensive admin console for withdrawal approvals, user management, and system monitoring with complete audit logs
Modern tools and frameworks powering this solution
5 technologies
5 technologies
5 technologies
5 technologies
5 technologies
5 technologies