The blockchain: what, why and how
summary
Explains Bitcoin mechanics: keys from public key cryptography, UTXO inputs and change outputs, miners solving a puzzle that targets ~10 minute blocks with a current reward of ~12 BTC and a network rate around 1 quintillion hashes/sec, making past blocks practically immutable. Describes building a smart contract system with solidity and truffle on a private Ethereum network via Azure "Blockchain as a Service", implementing a rock-paper-scissors-lizard-spock DApp that works but is slower and costlier than centralized alternatives.
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chapters (25)
- 0:00Intro
- 0:54Bitcoin
- 1:19Silk Road
- 2:04Wannacry virus
- 2:42remittance industry
- 4:25negative points
- 4:44ledger
- 8:15private key
- 11:03Bitcoin balance
- 11:29Unspent transactions
- 13:22Who does the bookkeeping
- 18:35Why do all this hard work
- 20:01Single distributed ledger
- 21:33Bitcoin network
- 35:30Ethereum watchchain
- 37:18Smart contracts
- 39:31Architecture
- 40:34Flow
- 43:38Smart Contract
- 50:37Lessons learned
- 52:35Use cases
- 53:09Dogecoin
- 53:49Buying a house
- 55:15Ever Ledger
- 56:38Outro
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