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_Follow along with the video_ --- ### Layer 2 Solutions In the context of blockchain technology, Layer 2 (L2) solutions like ZKsync offer significant benefits, including increased transaction speed and reduced costs. As ZKsync continues to mature, the differences between deploying contracts on Ethereum and ZKsync are expected to diminish. Future lessons by Ciara will delve deeper into how L2 solutions work and why they integrate into the blockchain ecosystem. We extend our gratitude to Matter Labs and the ZKsync team for being the lead sponsor of Cyfrin Updraft: their commitment to making Web3 developer and security research education accessible has allowed us to offer this course for free. Additionally, we thank Arbitrum and Optimism for their historical support. Transparency is crucial, so we list all sponsors in the [dedicated section](https://github.com/Cyfrin/foundry-full-course-cu?tab=readme-ov-file#sponsors) of the GitHub repository associated with this course. We also provide alternatives to ensure you can choose the technology that best suits your needs. > đâ**IMPORTANT**:br > At the end of each section, you'll find links to challenge contracts that you can solve to earn NFTs. ### Deploying to production As of recording, deploying professional smart contracts to ZKsync may present some challenges. We recommend consulting our [guide](https://github.com/Cyfrin/foundry-full-course-cu/blob/main/read-before-deploying-serious-projects-to-zksync.md) in the GitHub repository before deploying a production smart contract on ZKsync.
Thanks to zkSync for being the lead sponsor of Updraft <3.
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Course Overview
About the course
Blockchain fundamentals
Introduction to smart contract gas
Introduction to wallets
Transaction signatures
Smart contracts
Advanced gas concepts
Security researcher
$49,999 - $120,000 (avg. salary)
Web3 developer
$60,000 - $150,000 (avg. salary)
Smart Contract Engineer
$100,000 - $150,000 (avg. salary)
Smart Contract Auditor
$100,000 - $200,000 (avg. salary)
Web3 Developer Relations
$85,000 - $125,000 (avg. salary)
Last updated on May 27, 2025
Duration: 3h 11min
Certification: Blockchain Basics
This proficiency exam is designed to confirm your understanding of all key concepts and learnings presented in the course material. You will have 45 minutes to answer 30 questions and score 18 to pass and earn a Certificate of Completion.
Course Overview
About the course
Blockchain fundamentals
Introduction to smart contract gas
Introduction to wallets
Transaction signatures
Smart contracts
Advanced gas concepts
Security researcher
$49,999 - $120,000 (avg. salary)
Web3 developer
$60,000 - $150,000 (avg. salary)
Smart Contract Engineer
$100,000 - $150,000 (avg. salary)
Smart Contract Auditor
$100,000 - $200,000 (avg. salary)
Web3 Developer Relations
$85,000 - $125,000 (avg. salary)
Last updated on May 27, 2025