BBguai is a Node.js package that calculates the Chinese Zodiac (BaZi) for cryptocurrency wallets by analyzing their first active transaction time on Bitcoin, Ethereum, or Solana blockchains. It's designed for developers and crypto enthusiasts interested in combining blockchain data with traditional Chinese astrology to gain unique insights into their digital assets' "birth characteristics." The tool is particularly useful for those who want to add an astrological dimension to wallet analytics or explore novel ways of interpreting blockchain activity.