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![KaspaFacts Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::1749792064827457536.png) KaspaFacts 𐤊 [@KaspaFacts](/creator/twitter/KaspaFacts) on x 5118 followers
Created: 2025-07-27 14:55:01 UTC

What happens when deep fork is revealed that is heavier than the existing chain?

Lets use the example of a fork that reorgs back a full day.

#Bitcoin 

Nodes verify the heaviest chain is valid and switch to it.  This is an automatic process.

If an attacker reveals a heavier chain, the network will automatically switch to the attackers chain, and continue mining on top of it.

#Kaspa 

Nodes have a finality depth.  Anything beyond finality depth is final, immutable, and cannot be changed.

If an attacker reveals a heavier DAG, the network will automatically flag it, log a warning, and continue mining on the existing chain.

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