Hard Fork
Mise a jour non retrocompatible creant une nouvelle chaine.
A hard fork changes the rules of a blockchain in a way that old nodes cannot validate new blocks. All participants must upgrade or be left on the old chain. If there is disagreement, the chain can split permanently, as happened with Bitcoin (BTC) and Bitcoin Cash (BCH) in 2017.
Hard forks can be contentious or non-contentious. Contentious hard forks arise from fundamental disagreements within the community (block-size debate, PoW vs PoS). Non-contentious hard forks are planned upgrades where the entire community agrees to move forward.
The Ethereum merge from proof-of-work to proof-of-stake was technically implemented through a series of hard forks. It was largely non-contentious, though a small minority maintained the PoW chain as Ethereum PoW (ETHW).
Hard forks can create new assets, shift monetary policy, and fundamentally alter a network's properties. They are among the most consequential events in a blockchain's history.
Comment CryptoRadar24 le suit
CryptoRadar24 monitors upcoming protocol upgrades and flags hard-fork events in its news and alert system, noting potential chain splits and their market implications.
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FAQ
Do I get coins on both chains after a hard fork?
If you hold coins before a contentious hard fork, you typically receive equivalent coins on both chains. You need to take precautions to safely split them.
How is a hard fork different from a soft fork?
Hard forks require all nodes to upgrade and break backward compatibility. Soft forks are backward compatible and only require a majority of miners to upgrade.
Can hard forks be reversed?
Once a hard fork is activated and the community splits, reversal is practically impossible without another hard fork to undo the changes.
Are hard forks good or bad?
It depends. Planned upgrades improve the network. Contentious splits can divide community resources and create confusion, but can also allow incompatible visions to co-exist.