Solidity & MetaMask Compatibility

caution

This page has not yet been written for ink! v6.

TODO @davidsemakula

With ink! v6, we have introduced a new attribute abi for the #[ink::contract] macro. It allows building your contract in Solidity-compatibility mode (more details here.

The implication of supporting Solidity ABI encoding is that there is a restriction on the types you can use as constructor/message arguments or return types. You won't be able to use Rust types for which no mapping to a Solidity type exists. An error about a missing trait implementation for this type will be thrown.

Please note that your contract sizes will get larger if you support both the ink! and Solidity ABI.

MetaMask

…

Hardhat, Foundry, etc.

…

Block explorers

…