A debate has started in the Bitcoin community after Binance founder Changpeng Zhao (CZ) suggested that some inactive Bitcoin wallets, including those believed to belong to Bitcoin creator Satoshi Nakamoto, could one day be frozen to protect them from future quantum computer attacks.

CZ shared the idea during an appearance on the Galaxy Brains podcast with Galaxy Research President Alex Thorn. He said it was not a formal proposal but simply one possible way to deal with a long-term security risk that Bitcoin could face in the future.

The concern is about quantum computers. Today's computers cannot break Bitcoin's security, but some experts believe future quantum computers may become powerful enough to crack the cryptography protecting Bitcoin wallets. If that happens, hackers could steal coins from those wallets.

One of the biggest concerns is Satoshi Nakamoto's estimated 1.1 million bitcoin. The coins, worth around $70 billion at current prices, have never been moved and are believed to be sitting in old wallet addresses that could eventually become vulnerable.

CZ suggested that after Bitcoin upgrades to quantum-resistant security, owners of older wallets could be given six to twelve months to move their coins into safer addresses. After that deadline, the Bitcoin community could decide whether to freeze any coins that remain in vulnerable wallets to prevent them from being stolen.

"If we don't do anything with it, then we're basically giving it to somebody who's going to hack it," CZ said.

He also made it clear that this would not be his personal decision. Instead, it would require approval from the Bitcoin community through a network upgrade, such as a soft fork or hard fork.

The discussion comes as concerns about quantum computing continue to grow. A recent Google Quantum AI research paper suggested that future quantum computers may need far fewer qubits than previously expected to break Bitcoin's encryption.

Although no such machine exists today, the findings have increased calls for Bitcoin to prepare well in advance.

According to Bitcoin Improvement Proposal 361 (BIP-361), more than one-third of all bitcoin already have public keys exposed on the blockchain. That means those coins could become vulnerable if powerful quantum computers are developed in the future.

Jameson Lopp, co-founder and chief security officer at Casa and one of the authors of BIP-361, said the discussion should not be limited to Satoshi's coins alone.

Instead, Lopp believes Bitcoin users, exchanges and other companies should gradually move their coins to quantum-resistant wallets before quantum computers become a real threat.

Not everyone agrees that freezing coins is the right answer.

Michael Terpin, founder and CEO of Transform Ventures, said freezing Bitcoin addresses would go against one of Bitcoin's core principles.

"While I appreciate the proactivity in CZ's proposal, it begins a slippery slope of creating permission in a permissionless system relative to personal property," Terpin said.

He also questioned whether the Bitcoin community could ever agree on such a major change. "Considering it took years just to implement SegWit, I doubt a quick consensus could be formed here," he said.

Matt Hougan, chief investment officer at Bitwise, supports a different idea. Instead of freezing Satoshi's coins or allowing them to be stolen, he backed a proposal from Castle Island Ventures partner Nic Carter to place the coins into a legal trust until ownership can be proven.

"I actually like Nic Carter's proposal," Hougan said. "It avoids the philosophical challenges of both CZ's suggestion and the 'let whatever happens' perspective."

Other developers have also suggested technical solutions that would avoid freezing coins completely. These include systems such as Provable Address-Control Timestamps (PACTs) and future zero-knowledge proof technology, which could help protect old coins while preserving Bitcoin's core principles.

The idea of freezing coins has also been criticized by Bitcoin commentator Carl Runefelt.

Runefelt said freezing bitcoin would go against the values that make the digital asset unique. He also questioned whether such a move would even be technically possible.

He warned that if Satoshi's coins could be frozen, similar arguments could later be used against other large bitcoin holders, including Strategy Executive Chairman Michael Saylor, for legal or tax reasons. Runefelt also said he was surprised that the idea came from someone as influential as CZ.

Critics believe freezing coins would weaken Bitcoin's reputation as a decentralized and censorship-resistant network. Supporters, however, argue that failing to prepare for quantum attacks could allow hackers to steal millions of bitcoin, causing even greater damage to confidence in the scarce digital asset.

For now, the discussion is only theoretical. BIP-361 is still a draft proposal, no implementation timeline has been approved, and the Bitcoin community has not reached agreement on how to deal with the possible threat from quantum computing.