CodeBlockchain
Blockchain Fundamentals — example repository
The minimal chain built across the series: block structure, hash linking, validation and a toy consensus loop, in one runnable project.
- TypeScript
- #blockchain
- #hashing
- #consensus
Resources
Learn beyond the video.
Explore the code, notes, references and additional resources behind the tutorials.
Collections
Everything for one series
Each series has its own page gathering the material that belongs to it.
5 items
Blockchain Fundamentals
Start with the fundamentals and understand how blockchain systems actually work — from the problem they were built to solve through to the consensus that keeps them honest.
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Code
Code
Repositories built across the tutorials, runnable on their own.
Notes
Notes
Condensed written explanations to read instead of, or alongside, a video.
- NotesBlockchain
Blockchain Fundamentals — study notes
Condensed notes for the series: the vocabulary, the four conditions, the consensus comparison table and the questions to ask of any chain.
- #reference
- #summary
Documentation and references
Documentation and references
Primary sources worth reading directly rather than in summary.
- ReferencesBlockchain
Bitcoin: A Peer-to-Peer Electronic Cash System (opens in a new tab)
The original 2008 paper. Nine pages, and still the clearest statement of the double-spending problem and the proof-of-work answer to it.
- #primary-source
- #consensus
Open resource
- ReferencesBlockchain
Ethereum developer documentation (opens in a new tab)
Reference for accounts, transactions, gas, the EVM and the node software. The section on transaction lifecycle pairs directly with episode three.
- #evm
- #transactions
Open resource
- ReferencesBlockchain
Hyperledger Besu documentation (opens in a new tab)
Operating a permissioned network in practice — validator configuration, QBFT settings, genesis files and the parameters that decide how the chain behaves under load.
- #permissioned
- #qbft
- #operations
Open resource
- ReferencesProtocols
libp2p documentation (opens in a new tab)
The networking layer underneath several major decentralized systems: peer discovery, transport negotiation, pubsub and NAT traversal, documented protocol by protocol.
- #networking
- #p2p
Open resource
Examples
Examples
Small experiments that make a mechanism visible.
- ExamplesDecentralized Systems
Consensus mechanisms — runnable comparison
Small standalone programs that run a proof-of-work loop and a BFT voting round side by side, so the difference in message count and finality is visible rather than described.
- TypeScript
- #consensus
- #simulation
Recommended reading
Recommended reading
Papers and long-form writing that repay the time.
- ReadingDecentralized Systems
In Search of an Understandable Consensus Algorithm (Raft) (opens in a new tab)
Crash-fault consensus, written to be readable. The clearest way to see what Byzantine tolerance adds, by first understanding what it costs to do without it.
- #consensus
- #primary-source
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