Deploy a contract from the browser

Complete the DIDLab Quickstart first. In MetaMask, verify that the selected network is DIDLab and the chain ID is 252501.

In Remix, create SimpleStorage.sol, paste the contract below, then compile it with a Solidity compiler compatible with ^0.8.24.

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

contract SimpleStorage {
    uint256 private value;
    event ValueChanged(uint256 value, address indexed changedBy);

    function set(uint256 newValue) external {
        value = newValue;
        emit ValueChanged(newValue, msg.sender);
    }

    function get() external view returns (uint256) {
        return value;
    }
}

Open Deploy & Run Transactions. Select the browser-extension/injected wallet environment, then approve the connection in MetaMask if prompted.

Click Deploy. MetaMask will show a contract-creation transaction. Check that the network is DIDLab, review the gas estimate, and approve.

Expand the deployed contract. Call set with 42 and approve the wallet transaction. Then call get; it should return 42.

Copy the contract address from Remix and search for it in the DIDLab explorer. Confirm the creation transaction, block, creator address, bytecode, and your later set(42) transaction.