Certified Blockchain Developer - Ethereum (CBDE)
The CBDE is a performance-based certification that validates practical Ethereum development skills including Solidity smart contract development, EVM mechanics, gas optimization, token standards, DeFi protocols, and Layer 2 scaling solutions. Offered by the Blockchain Training Alliance (BTA).
70
Questions
90 min
Time Limit
70%
To Pass
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Exam Rules
- You can skip questions and return to them later
- Flag questions for review before submitting
- No feedback shown until you submit the entire exam
- Unanswered questions count as wrong โ answer everything
- 10 pretest questions are mixed in and don't affect your score
- Timer auto-submits when time runs out
- Your progress is auto-saved every 30 seconds