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Quantum Threat to Bitcoin: Can Old Coins Be Saved?

A Bitcoin improvement proposal (BIP-361) aims to protect the cryptocurrency from future quantum computers by migrating old coins to secure addresses. Critics, including Cardano founder Charles Hoskinson, argue the plan cannot save up to 1.7 million early coins, potentially including the legendary stash of creator Satoshi Nakamoto. This highlights a looming technological threat and ongoing debates within the crypto community about governance and security upgrades.

Billions in Bitcoin Face a Quantum Computer Threat
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A Quantum Threat Looms Over Bitcoin's Oldest Treasure

A new plan to protect Bitcoin from future supercomputers is gaining attention, but experts warn it might not save all of the digital gold, including the legendary stash belonging to its mysterious creator. This isn't just a tech problem—it's about securing billions in value that could be vulnerable in the coming decade.

Imagine a lock that has protected your safe for decades. A new type of key, called a quantum computer, is being developed that could eventually open that lock. Quantum computers are machines that use the strange rules of quantum physics to solve problems traditional computers can't. For Bitcoin, the 'lock' is its cryptography, the complex math that keeps your coins safe. A proposal, known as BIP-361, aims to change these locks before the new keys arrive.

The plan would unfold over several years in three distinct phases. It's like a city announcing it will replace all old, vulnerable door locks. First, no new money can be sent to addresses with the old locks. Then, the money already in those addresses is frozen, so it can't be moved. Finally, there's a window to recover any frozen funds if the owner upgrades their lock. The goal is to protect over 7 million Bitcoin, worth over half a trillion dollars today.

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Why Some Treasure Might Stay Lost

However, Charles Hoskinson, a founder of the Cardano blockchain, argues the recovery phase has a critical flaw. He claims at least 1.7 million Bitcoin, mined before 2013, cannot be saved by this plan. That's because these very old coins use a different, more basic system for generating their security keys, one that doesn't easily allow for a upgrade. Hoskinson stated bluntly, "It's not possible."

A significant portion of these vulnerable coins—over 1.1 million—is believed to belong to Satoshi Nakamoto, the pseudonymous creator of Bitcoin. This legendary stash, untouched since Bitcoin's early days, is currently valued at roughly $82 billion. The proposal, therefore, touches on the fate of Bitcoin's founding myth and its largest known hoard.

  • The Quantum Threat: Advanced computers could break current Bitcoin security within the next decade.
  • The Proposed Shield: A multi-year plan to freeze and migrate old, vulnerable Bitcoin.
  • The Unprotected Treasure: Up to 1.7 million early coins, including Satoshi's, may remain at risk.
  • The Community Divide: Hoskinson criticizes Bitcoin's resistance to governance systems used by other blockchains to handle such upgrades.

Hoskinson points to a growing urgency, citing Google's own 2029 deadline to upgrade its systems to "post-quantum cryptography." This move by a tech giant signals that the threat is considered real and nearing. While he thinks the Bitcoin proposal is a necessary effort, he believes the Bitcoin community's refusal to adopt certain governance tools makes solving such problems harder. He mentioned systems used by Cardano, Polkadot, and Tezos, where rule changes can be voted on directly by the network's participants.

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What does this mean for regular people?

For anyone who owns Bitcoin, this is a distant but real reminder that technology evolves, and even digital assets need maintenance. It highlights that the rules governing major systems like Bitcoin are complex and sometimes contentious. Most importantly, it shows that the story of Bitcoin—including its mysterious origins and the fortune of its creator—is still being written, with future chapters potentially involving high-tech threats and community debates.

— Editorial Team

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