Blockchain
Blockchain & Smart Contracts
From how a chain works to auditing the contracts that run on it.
Blockchain — Basic
What a blockchain really is, stripped of the hype.
20 study hours
165 pages
8 modules
PDF ebook
What is inside
01
Distributed ledgers explained from first principles
02
Cryptographic hashing and digital signatures
03
Consensus: proof of work, proof of stake
04
Wallets, keys, addresses and custody
05
Ethereum, Bitcoin and how chains differ
06
Tokens, NFTs and what they actually represent
07
Gas, fees and transaction lifecycle
08
Honest assessment: when blockchain is the wrong answer
By the end you can
- Explain blockchain accurately to a non-technical audience
- Set up and secure a wallet correctly
- Judge whether a use case genuinely needs a chain