Découvrir
The fundamentals of the blockchain
Understand the mechanisms of trust, from the first blocks to smart contracts.
What You Can Do
Explain a blockchain and choose a relevant use case.
Prerequisites
No technical prerequisites.
No technical prerequisites.
5 lessons~ 2 h 45 of study and practice5 quizzes with explanationsUpdated on 18 September 2026
LEARN BY DOING
Decide whether certificates need a blockchain
5 questions per lesson · 80% required to pass · guided project with a 20-point rubric
Estimated study time includes reading, exercises, quizzes and the project. Tool installation and further practice may take additional time.
See the guided projectYour program
01Why a blockchain?Reading · exercise · quiz · 30 min
02Blocks, hashes and chainingReading · exercise · quiz · 30 min
03Consensus: reaching agreementReading · exercise · quiz · 30 min
04Bitcoin, Ethereum and smart contractsReading · exercise · quiz · 30 min
05Choose a usage, recognize limitsReading · exercise · quiz · 45 min