How can I view 0x8539555a's crypto portfolio?

You can view the full portfolio of 0x8539555a (0x8539eeecdf0b1363fa586b0a69f48be7115a555a) on Zerion at https://app.zerion.io/0x8539eeecdf0b1363fa586b0a69f48be7115a555a/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.