Ethereum Hard Forks
summary
Explains how upgrades are EIPs that change consensus, networking, node interfaces or token standards and gives concrete examples: EIP-1559 debated for months, opcode EIP-1344, networking EIP-2124, and ERCs like EIP-3156. Describes the workflow: draft, client implementations, JSON reference tests, shadow chain rehearsal using mainnet traffic, ephemeral “yolo” testnets, then activating on Robson/Rinkeby/Goerli/Kovan and mainnet. Notes a real-world rollback — the Constantinople cancellation hours before activation due to a security exploit — and that follow-ups (Petersburg) succeed.
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chapters (11)
- 0:00Start
- 0:41Ethereum Hard Forks
- 2:41How Ethereum Hard Forks Work
- 4:32What Is an Eip Ethereum Improvement Proposal
- 6:13Network Eeps
- 7:53Ercs
- 9:24Governance
- 13:19Ideation
- 14:29Validation
- 16:03Ephemeral Test Nets
- 17:18Shadow Chain








