How can I view 0xd39cc2d4's crypto portfolio?

You can view the full portfolio of 0xd39cc2d4 (0xd39cd24bef55970722e7ccbbc8da3b3bcb1ac2d4) on Zerion at https://app.zerion.io/0xd39cd24bef55970722e7ccbbc8da3b3bcb1ac2d4/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.