How can I view 0xb53b9549's crypto portfolio?

You can view the full portfolio of 0xb53b9549 (0xb53b26f0bde66fb1203a187c79e1d25c8f0e9549) on Zerion at https://app.zerion.io/0xb53b26f0bde66fb1203a187c79e1d25c8f0e9549/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.