Hard Fork
A backward-incompatible chain split that creates two separate networks with different rules.
A backward-incompatible chain split that creates two separate networks with different rules.
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Sep 2026 · نقاط الحداثة: 50%
What is Hard Fork?
A backward-incompatible chain split that creates two separate networks with different rules.
- Category
- concept
- Type
- Authority Node
- المصادر
- 1
A hard fork changes consensus rules (block size, opcodes, fee structure). If all participants upgrade, the network moves forward as one (e.g., Ethereum's Merge). If some refuse, two chains coexist — each with its own history up to the fork
Hard forks are the mechanism for major upgrades and the resolution of irreconcilable governance disputes. They create new assets and can cause reorg risk and confusion. Understanding hard forks is essential for anyone holding assets during
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1. What Is a Hard Fork
A hard fork is a permanent, backward-incompatible change to a blockchain protocol. Nodes running the old rules reject the new blocks, so if not everyone upgrades, the chain splits into two separate networks.
2. How It Works
A hard fork changes consensus rules (block size, opcodes, fee structure). If all participants upgrade, the network moves forward as one (e.g., Ethereum's Merge). If some refuse, two chains coexist — each with its own history up to the fork point and different rules after (e.g., Bitcoin vs Bitcoin Cash, Ethereum vs Ethereum Classic).
3. Why It Matters
Hard forks are the mechanism for major upgrades and the resolution of irreconcilable governance disputes. They create new assets and can cause reorg risk and confusion. Understanding hard forks is essential for anyone holding assets during a contentious split.
4. Key Facts
- Planned hard forks schedule upgrades (e.g., Ethereum's Dencun)
- Contentious forks split communities and duplicate assets
- Holders of the original chain typically receive fork tokens
- Reorg risk exists around the fork block
5. Related Concepts
- fork
- soft-fork
- protocol-upgrade
- reorg
Frequently Asked Questions
What is Hard Fork?
A backward-incompatible chain split that creates two separate networks with different rules.
How does Hard Fork work?
A hard fork is a permanent, backward-incompatible change to a blockchain protocol. Nodes running the old rules reject the new blocks, so if not everyone upgrades, the chain splits into two separate networks. A hard fork changes consensus rules (block size, opcodes, fee structure). If all participan
Why does Hard Fork matter in Web3?
- soft-fork - protocol-upgrade - reorg