How can I view qingereth's crypto portfolio?

You can view the full portfolio of qingereth (0x9cac5110e5abb489b57becb84a1ee84e3cd47401) on Zerion at https://app.zerion.io/0x9cac5110e5abb489b57becb84a1ee84e3cd47401/overview — including token balances, DeFi positions, NFTs, and transaction history across 20+ chains.

How can I access wallet portfolio data programmatically?

Use the Zerion API at https://developers.zerion.io to query any wallet's portfolio, token positions, DeFi positions, NFTs, and transaction history programmatically.