Has Any Major Blockchain Successfully Executed a Rollback Due to a Dispute?

Yes, the Ethereum blockchain executed a controversial hard fork in 2016 following the DAO hack, effectively "rolling back" the chain to recover stolen funds. This created two separate chains: Ethereum (ETH) and Ethereum Classic (ETC).

This was not a standard contract dispute but a catastrophic security event, demonstrating the technical possibility but highlighting the deep ideological divide on immutability.

What Were the Long-Term Consequences of the DAO Hack for the Ethereum Network?
What Are the Key Differences between a ‘Hard Fork’ and a ‘Soft Fork’ in Blockchain Development?
How Did the Ethereum Community Respond to the DAO Hack?
What Is a Soft Fork, and How Does It Differ from a Hard Fork in Blockchain Upgrades?
What Is a ‘Soft Fork’ versus a ‘Hard Fork’ in Blockchain Upgrades?
What Is a ‘Choice of Law’ Clause and How Can It Be Implemented in a Smart Contract?
What Are the Legal Implications of a ‘Fork’ on Token Ownership?
What Fundamental Concept Was Established by the Ethereum Hard Fork after the DAO Hack?

Glossar