Python or Node.js developer for Blockchain Wallet Wealth Calculator Offline

Summary

We need a simple script to calculate on-chain wealth for a list of Ethereum wallets. Input and output must be integrated with Google Sheets.

Phase 1 Scope:
- Read a list of Ethereum wallet addresses from Google Sheets
- For each wallet:
  - Use API to get token balances
  - Focus on ETH, stablecoins (USDC, USDT, DAI), and major tokens (AAVE, UNI, etc.)
  - Skip wallets with no activity in the last 12 months
  - Fetch token prices (e.g. via Coingecko, use caching)
  - Calculate total USD value per wallet
- Write results (breakdown + total value) back to Google Sheets

Requirements:
- Use Python (preferred) or Node.js
- Handle large lists (1k–30k+ wallets)
- Respect API limits (support basic caching or batching)

Deliverables:
- Script + Google Sheet integration
- README with setup instructions

If this goes well, we will expand to more advanced scoring (NFTs, social data, clustering).