Mark Karpelès, former CEO of the defunct exchange Mt. Gox, recently proposed a Bitcoin hard fork to recover approximately 79,956 BTC stolen in the 2011 hack, worth about $5.2 billion at current prices. The proposal targets a wallet address associated with the 2011 Mt. Gox system breach, which received nearly 80,000 Bitcoins after the attack and remained untouched for over 15 years. Under current Bitcoin rules, these funds can only be transferred if the corresponding private key is held. The proposal would allow the unspent outputs of a recovered Mt. Gox address to be controlled via a signature, thus bringing the funds into the existing judicial oversight and compensation process to repay Mt. Gox creditors. Karpelès stated that this proposal is merely a starting point for discussion, intending to limit the rule change to a single address and activate it at a future block height. However, the proposal also acknowledges that this plan requires a coordinated upgrade across the entire network, and if some community members refuse to support it, it could lead to a risk of a blockchain split. It's important to note that these approximately 80,000 BTC are not currently part of the assets allocated to Mt. Gox creditors, nor are they controlled by the bankruptcy trustee.