Reading Contracts on Block Explorers — Key concepts

ABI-driven UIRead/Write tabs are generated from the verified ABI. If the ABI is wrong or missing, the UI breaks or hides functions.

Auto-gettersPublic state shows as read-only getters. Non-view functions require a wallet connection to simulate or send transactions.

Internal TxThese trace value transfers and calls triggered within a transaction (e.g., a swap paying a fee). Not all explorers show full traces on every chain.

Proxy detectionMany contracts are proxies. Look for “Proxy” badges and the implementation address; read/write against the implementation ABI where appropriate.

Constructor args & sourceVerification often shows constructor parameters and compiler settings. Mismatches hint at outdated ABIs.

# Things to note on a verified contract page
- Compiler version & optimization
- Constructor arguments (decoded)
- Proxy/implementation addresses (if any)
- ABI download link