How can I view daydaybtceth's crypto portfolio?

You can view the full portfolio of daydaybtceth (0x20de50deb09655be2fc5823974af65800c9e59b5) on Zerion at https://app.zerion.io/0x20de50deb09655be2fc5823974af65800c9e59b5/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.