Solidity

Ship a safer Solidity contract

Build, test, and deploy a Solidity 0.8.x contract that looks credible in a public repo. You will use modern structure, local tests, a testnet deployment, and a security checklist.

For college builders in India who can code and want a recruiter-ready Web3 project repo.

Advanced8 lessonsAbout 34 min+100 XP

Written from the official docs and release notes, and last checked on 21 September 2026.

Start lesson 1

Your path

1Start hereWrite your first clean contract5 min
2Use types and data locations4 min
3Control state and access5 min
4Set up Hardhat tests4 min
5Spend less gas by design4 min
6Avoid student-contract vulnerabilities4 min
7Deploy to a testnet4 min
8Submit the recruiter-ready repo4 min
The check10 questions · 7 to pass
Verify the Solidity skill+100 XP and a proof page, once the check and the task are done