Blockchain Lab Tools
Gas
Units
ABI
Address/ENS
Tx decoder
Hash/Merkle
Storage slots
EIP/ERC/BIP
Chainlist
Tokens
ABI encoder / decoder
Selector lookups use the public
openchain.xyz
database with
4byte.directory
as fallback.
Selector / topic
Signature (function or "event …")
Compute
Encode call
Function signature
Arguments (JSON array)
Encode
Decode calldata
Calldata (0x…)
0xa9059cbb000000000000000000000000000000000000000000000000000000000000dead00000000000000000000000000000000000000000000000000000000000f4240
Optional signature (otherwise looked up)
Decode
Look up a selector
Look up
Learn more on Blockchain Lab:
Smart contracts
·
Virtual machines
·
Smart-contract security