Recover a signer

Why use this example

Use this pattern when you need to check the exact bytes, selector, hash, or decoded values that Solidity will produce. The entry isolates recover a signer so its input, result, and state changes stay easy to compare.

Solidity to run

bytes32 digest = keccak256("hello")
address signer = ecrecover(digest, 27, bytes32(0), bytes32(0))
signer

What to expect

Because the supplied signature values are invalid, ecrecover returns the zero address instead of a signer.

Continue the investigation

Change a value, add another expression, or open Inspect after the run. Accepted entries remain available to the next entry, and the clean replay keeps the complete result reproducible.