How can I view keisuke19870616eth's crypto portfolio?

You can view the full portfolio of keisuke19870616eth (0x7745e52220fee6711a6e94f2781efdcd22630b6a) on Zerion at https://app.zerion.io/0x7745e52220fee6711a6e94f2781efdcd22630b6a/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.