Blockchain, Smart Contracts, and Ethereum
summary
Shows how to install MetaMask + Ropsten, get free test ether, compile a Solidity contract that stores a hash and deploy it to the Ethereum testnet; demo verifies lyrics by hashing and reading the blockchain. Covers mining and consensus: Bitcoin ~10‑minute blocks and 12.5 BTC reward, Ethereum ~14‑second blocks, proof‑of‑work nonce search, and node sizes (~Bitcoin hundreds of GB, Ethereum ~500+ GB) and node counts (Bitcoin ≈9–10k, Ethereum ≈17k). Explains gas pricing and that demos run successfully on the testnet.
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chapters (26)
- 0:00Start
- 1:18Should you be here?
- 3:57Agenda
- 6:10Fiat Currency
- 6:36Bitcoin as Another Currency
- 10:19Placement of Trust
- 11:53What about these?
- 12:47Trust Issues
- 14:22Understanding Decentralization
- 17:07Blockchain - Distributed Ledger
- 18:13Basic Concept of of a Blockchain
- 19:10Using Hashing to Chain the Blocks
- 20:50Broadcasting Transactions
- 22:34The Mining Process
- 25:30Proof of Work (POW)
- 26:57Mining is Dirty (Resource Intensive)
- 28:10A Typical Mining Farm
- 31:43Full Nodes and Light Nodes
- 34:26Bitcoin Nodes
- 34:54Ethereum Nodes
- 37:31Rewards for Miners
- 41:37Ethereum • Ethereum is an open blockchain platform
- 43:12Ethereum Clients - geth Connecting to the Ethereum Blockchain
- 45:29Deploying Smart Contracts
- 45:52Executing Smart Contracts
- 48:57Online Betting
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