Blockchain 101

Bitcoin and Fundamentals

Bitcoin's transaction model, UTXOs, and Proof-of-Work consensus - the building blocks of the first Blockchain, plus its key trade-offs.

1. 01Blockchain 101: How it All Began
2. 02Blockchain 101: Transactions
3. 03Blockchain 101: A Primer on Consensus
4. 04Blockchain 101: Wrapping Up Bitcoin

Ethereum and EVM

Ethereum's account model, state storage, and Smart Contracts, its shift to Proof of Stake, and how Rollups scale it.

1. 05Blockchain 101: Ethereum
2. 06Blockchain 101: Storage
3. 07Blockchain 101: Smart Contracts
4. 08Blockchain 101: Smart Contracts (Part 2)
5. 09Blockchain 101: Consensus Revisited
6. 10Blockchain 101: Wrapping Up Ethereum
7. 11Blockchain 101: Rollups

Beyond Bitcoin and Ethereum

A tour of alternative designs - Solana, Polkadot (through JAM), Hedera, Kaspa, and more - plus cross-cutting topics like zero-knowledge proofs and data availability shaping Blockchain's future.

1. 12Blockchain 101: Solana
2. 13Blockchain 101: Solana Programs
3. 14Blockchain 101: Blockchain Safari
4. 15Blockchain 101: Parallelizing Execution
5. 16Blockchain 101: Beyond The Blockchain (Part 1)
6. 17Blockchain 101: Beyond The Blockchain (Part 2)
7. 18Blockchain 101: Polkadot
8. 19Blockchain 101: Polkadot Consensus
9. 20Blockchain 101: Coretime
10. 21Blockchain 101: JAM
11. 22Blockchain 101: ZK in Blockchain
12. 23Blockchain 101: Handling Data
13. 24Blockchain 101: Evolving a Blockchain