Mt. Gox’s Former CEO Suggests Hard Fork to Reclaim 80K Stolen Bitcoin

TheNewsCryptoPublished on 2026-02-28Last updated on 2026-02-28

Abstract

Mark Karpelès, former CEO of the defunct Mt. Gox exchange, has proposed a Bitcoin hard fork to recover nearly 80,000 BTC stolen in the 2011 hack. The funds have remained inactive in a known address for over 15 years. The proposed protocol change would allow the stolen bitcoins to be moved using a recovery address signature, specifically for this case, without altering rules for other transactions. Karpelès emphasized the proposal is a draft, not a formal implementation request, and would require consensus from miners and nodes. The idea has sparked debate within the Bitcoin community. Critics argue it violates the network's core principle of immutability and could set a dangerous precedent for future exceptions. Supporters counter that the hack is a clear historical event with an ongoing legal rehabilitation process in Japan to return funds to verified creditors. They also acknowledge the significant risk of a chain split if the hard fork lacks consensus.

The former Mt. Gox exchange CEO, Mark Karpelès, has published a proposal for a Bitcoin hard fork in order to recover approximately 79,956 BTC stolen in a hack in 2011. The funds have been dormant in a single address related to the Mt. Gox hack for over 15 years. According to the current Bitcoin protocol rules, a person can only spend their funds if they have the corresponding private key. The hard fork proposal adds a new Bitcoin network rule that permits spending funds from the theft address with a Mt. Gox recovery address signature.

Mark Karpelès said this new rule will let creditors spend the funds and recover them through Japan’s current rehabilitation process. He stated that this was a draft and not a request for its implementation. The proposal states that the network will implement this new rule at a future block height once miners and nodes accept it. Mark Karpelès noted that developers will apply this rule only to this specific address, not to all Bitcoin transactions.

Debate Over Immutability and Network Risks

The proposal has also elicited debates in the Bitcoin community, with some people expressing concerns over the implications for the Bitcoin protocol’s fundamental principles. Some people in the Bitcoin community believe that making an exception in the protocol for a single case could jeopardize the protocol’s immutability feature. They also believe that making an exception for one case could set a precedent for making exceptions in the future.

They also express concerns over who will decide the cases that will warrant such an intervention in the Bitcoin protocol’s history. The proposal’s supporters, on the other hand, believe that the case is an undeniable event in the history of the Bitcoin protocol, with a legal context to support it.

They also point out that there is a legal process to ensure that the recovered funds are distributed to the verified creditors through the court process. However, the proposal also points out that the process of implementing a hard fork in the Bitcoin protocol is risky, in that it could lead to a chain split in the event that the network does not reach a consensus.

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