How can I view 0xb631f5c3's crypto portfolio?

You can view the full portfolio of 0xb631f5c3 (0xb631d84ea19eb2bee556770aa8548d3e4ebef5c3) on Zerion at https://app.zerion.io/0xb631d84ea19eb2bee556770aa8548d3e4ebef5c3/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.