How can I view onetwothreefoureth's crypto portfolio?

You can view the full portfolio of onetwothreefoureth (0x5678298b0a0b828242641a202ce132000166dbc4) on Zerion at https://app.zerion.io/0x5678298b0a0b828242641a202ce132000166dbc4/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.