Cyfrin Updraft
Free video courses from the audit firm Cyfrin on Solidity, Foundry, DeFi and smart contract security.
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Cyfrin Updraft key facts
| Category | Web3 education |
|---|---|
| Platforms | Web |
| Pricing | Free on-demand courses |
| Company | Cyfrin Inc. |
| US availability | Available: terms restrict only sanctioned jurisdictions |
What is Cyfrin Updraft?
Cyfrin Updraft is a free on-demand course platform run by Cyfrin Inc., a smart contract audit firm. Its page lists 150+ lesson hours and four career tracks: blockchain foundations, smart contract security auditor, DeFi developer and web3 wallet security. ethereum.org links to its courses, which run from 3 hours (Blockchain Basics) to 24 hours (Smart Contract Security).
How Cyfrin Updraft works
Updraft is organized as courses grouped into career tracks.
The courses page tags each one Beginner, Intermediate or Advanced, from Blockchain Basics and Solidity Smart Contract Development up to Uniswap v4, Curve Stableswap, GMX Perpetuals, Assembly and Formal Verification, and Noir ZK circuits. There are also Python and Vyper, Rust and Solana courses.
A course is a sequence of video lessons with projects. The Solidity course lists 5 hours, 62 lessons and 3 projects across sections such as Simple Storage, Storage Factory, Fund Me and AI Prompting, and suggests one hour a day for five days using Remix IDE.
Tracks bundle courses toward a role. The career tracks page lists Solidity Smart Contract Developer at 28 hours over 3 courses, Smart Contract Security Auditor at 35 hours over 2 courses, DeFi Developer at 34 hours over 8 courses, and Zero Knowledge Developer at 8 hours.
How to start with Cyfrin Updraft
- Sign up on updraft.cyfrin.io and start with Blockchain Basics, a non-technical course, if you have never coded.
- Solidity Smart Contract Development is marked Beginner, and its page says it works whether you have never written a line of code, on Linux, macOS or Windows.
- Certification is a separate exam.
- The Solidity Smart Contract Developer certification lists 120 minutes and 80 questions, and the Qualified Web3 Signer exam lists 60 minutes and 20 questions.
Cyfrin Updraft fees and limits
The courses are listed as free to access. The certifications page does not show an exam price, so confirm the cost before you book one.
Risks to know before using Cyfrin Updraft
- Updraft is run by Cyfrin Inc., which also sells smart contract audits, formal verification and security competitions, and builds tools such as Aderyn and Moccasin.
- Expect some product focus.
- Finishing a course is not the same as passing the certification exam, which is what Cyfrin presents as the credential.
Cyfrin Updraft alternatives
Other projects people compare with Cyfrin Updraft.
Developer portal funded by the Ethereum Foundation, with docs, community tutorials and links to free courses.
Solana's official developer hub with docs, a video bootcamp and a free in-browser Solana Playground.
BuidlGuidl's set of build-and-submit Ethereum challenges using Scaffold-ETH 2, from tokens to ZK voting.
Free online school from Alchemy with in-browser courses on blockchain basics, JavaScript, Solidity and Ethereum.
Free interactive Solidity course where you write smart contracts in the browser to build a zombie game.
Where Cyfrin Updraft ranks on DappAtlas
Cyfrin Updraft pros and cons
- All on-demand courses are free
- 150+ lesson hours, including a 24-hour Smart Contract Security course
- Four career tracks, including one for security auditors
- Video-first, so there is less in-browser coding than on CryptoZombies or Alchemy University
- Tracks center on Solidity and EVM tooling such as Foundry
Cyfrin Updraft FAQ
What is Cyfrin Updraft?
Cyfrin Updraft is a free on-demand course platform run by Cyfrin Inc., a smart contract audit firm. Its page lists 150+ lesson hours and four career tracks: blockchain foundations, smart contract security auditor, DeFi developer and web3 wallet security. ethereum.org links to its courses, which run from 3 hours (Blockchain Basics) to 24 hours (Smart Contract Security).
How much does Cyfrin Updraft cost?
Free on-demand courses, according to Cyfrin Updraft’s own page (checked Sep 26, 2026).
Is Cyfrin Updraft available in the US?
Available: terms restrict only sanctioned jurisdictions, according to Cyfrin Updraft’s own page (checked Sep 26, 2026).
Sources
How this page works
Sources: Cyfrin Updraft: official site, Cyfrin: Terms and Conditions, Cyfrin Updraft: Courses. Data as of Sep 26, 2026.
Not affiliated with any project listed. Educational content, not financial advice.