Transaction Decoder

Turn tx hashes and calldata into human-readable actions.

Paste a transaction hash (32 bytes) or raw calldata (0x + a 4-byte selector).

Transaction lookups go to the Robinhood Chain RPC and the Blockscout explorer. Unknown function selectors are looked up on openchain.xyz, where only the 4-byte selector is sent, never your full calldata.

How it works

Read-only

1
Paste a hash or calldata
Drop in a transaction hash to fetch it from the chain, or paste raw calldata to decode on its own. The input's shape is detected automatically.
2
We resolve the ABI
The function is matched against the verified contract on Blockscout, then a local library of ERC-20/721/1155 signatures, then the openchain.xyz 4-byte database.
3
Read the decoded call
See the function, its named arguments, the ETH moved, and every event log turned from hex into plain, human-readable values.

Read the docs

How it works

Read-only

1
Paste a hash or calldata
Drop in a transaction hash to fetch it from the chain, or paste raw calldata to decode on its own. The input's shape is detected automatically.
2
We resolve the ABI
The function is matched against the verified contract on Blockscout, then a local library of ERC-20/721/1155 signatures, then the openchain.xyz 4-byte database.
3
Read the decoded call
See the function, its named arguments, the ETH moved, and every event log turned from hex into plain, human-readable values.

Read the docs