How can I view xiaoyubtceth's crypto portfolio?

You can view the full portfolio of xiaoyubtceth (0x23e9e002ee2ae2baa0c9d6959578bcb77148bdcf) on Zerion at https://app.zerion.io/0x23e9e002ee2ae2baa0c9d6959578bcb77148bdcf/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.