Crypto Auto-Withdrawal SaaS

I am building a small Software-as-a-Service utility that automatically sweeps any balance it finds, converts it, and pushes the funds into one master wallet. The script must:

• Run reliably on Android, iOS, Windows and macOS – I need the same codebase (or clearly separated modules) to behave the same way across every environment.
• Handle Bitcoin, Ethereum and Solana today, with an architecture that lets me plug in additional chains later without a full rewrite.
• Detect new deposits, convert all supported assets into the target currency I specify, then execute a single withdrawal to my consolidation address.
• Log every step (conversion rates, transaction IDs, error traces) so I can audit activity at any time.

Please build the core logic, integrate whatever exchange or on-chain swap APIs you feel are most efficient, and include straightforward configuration and deployment instructions. I’ll consider the job complete when I can watch test wallets on each platform empty themselves, convert, and land in the final address without manual intervention.