Crypto + Concurrency
summary
A minimal blockchain gets implemented in Elixir using Elixir + OTP with Agents for state, GenServer for node RPC, and Supervisors for restarts; blocks use a proof-of-work nonce (work factor set to 1) and are mined every ~30 seconds in the demo; nodes disseminate blocks via a gossip protocol over Erlang distribution; the prototype runs across local nodes, swaps to the longest valid chain, and mostly works though the live demo has flaky UI and the energy cost of PoW remains unresolved.
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chapters (15)
- 0:00Start
- 1:32What Is Bitcoin
- 4:10Bitcoin
- 6:26Cyberpunk Manifesto
- 7:18Financial Crisis
- 9:17Gossip Protocol
- 9:55Asymmetric Cryptography
- 11:29Unspent Transaction Outputs
- 14:14Proof of Work
- 18:06Message Passing
- 18:37Spawn a Process
- 24:14Single Block
- 25:32Block Chain
- 33:57Implement the Blockchain
- 41:13Energy Required To Maintain the Bitcoin Network
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