Node.js & Blockchain
summary
Covers how blockchain immutability is achieved via hashing, Merkle trees, and proof-of-work cost that makes history hard to change, noting miners receive 12.5 BTC per block. Describes Ethereum’s gas model and how Solidity compiles to contract bytecode, and demonstrates development workflows using Truffle and Remix for testing/deployment. Compares public Ethereum to private chains built with Hyperledger Composer and demos a dApp on the Ropsten testnet that accepts transactions (first two submitters get T-shirts).
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chapters (10)
- 0:00Blockchain relevance today
- 3:16Block data and Merkle trees
- 7:32Consensus algorithms
- 11:05Public vs private blockchains
- 13:14Ethereum smart contracts VM
- 19:54Decentralized apps with JavaScript
- 23:27Solidity smart contract examples
- 27:43Blockchain dev tools frameworks
- 31:58Hyperledger Composer enterprise apps
- 34:24Rootstock testing alternatives
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