Google aims to complete its quantum transition by 2029, while the Bitcoin community's consensus remains unclear.

As quantum computing technology advances rapidly, Google has taken the lead by setting a clear deadline, calling on the global industry to accelerate efforts against the “Q-Day” threat. Ethereum and Solana are actively following suit, while the Bitcoin ecosystem remains divided over the approach.

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Quantum threats are imminent, and Google issues the strongest deadline

Recently, Google announced that it will complete the transition to post-quantum cryptography (PQC) for all its products by 2029, becoming the first major tech company worldwide to publicly set a specific timeline.

The company warns that the time when quantum computers can crack current encryption standards may come sooner than widely expected. “Q-Day” refers to the point when quantum computing power is sufficient to break mainstream public key cryptography. Once this happens, everything from online identity verification to digital asset security will face unprecedented challenges.

Quantum computers pose a significant threat to current cryptographic standards, especially encryption and digital signatures. Leading by example and sharing an ambitious timeline is our responsibility. We hope this provides clear direction and urgency for the industry’s digital transformation.

Currently, Google is continuing to develop its quantum chip Willow, which has a computational capacity of 105 qubits, placing it among the top superconducting quantum processors globally.

Cryptocurrency Takes the Hit First: Ethereum and Solana Lead Deployment

The rise of quantum computing has a direct impact on the crypto industry. There is still debate within the community about the scope of the risk: whether only wallets exposed with public keys are vulnerable, or if all on-chain assets are at risk. No consensus has been reached.

In response to this threat, the Ethereum Foundation has established the “Post-Quantum Ethereum” resource center, aiming to implement quantum-resistant solutions at the protocol level by 2029. The focus is on protecting the execution layer first, building defenses for billions of dollars in on-chain assets.

The Solana ecosystem took proactive steps earlier this year, launching the “Winternitz Vault” on-chain quantum-resistant wallet. Using complex hash-based signatures, it automatically generates new keys for each transaction, significantly reducing the risk of private key attacks by quantum computers. However, users still need to actively transfer assets into these dedicated vaults to be protected.

Bitcoin Community Divided: The Road to Response Is the Most Difficult

Compared to Ethereum and Solana’s proactive deployment, the Bitcoin ecosystem remains sharply divided on how to address quantum threats.

One prominent voice in the Bitcoin community, Blockstream CEO Adam Back, has stated that the quantum risk is greatly exaggerated and that it will take at least 20 to 40 years before it poses a real threat to Bitcoin.

Meanwhile, security researcher Ethan Heilman and others have proposed Bitcoin Improvement Proposal BIP-360, suggesting the addition of a new output type called “Pay-to-Merkle-Root” to protect Bitcoin addresses from short-term quantum exposure attacks. However, he worries that even if the proposal is adopted, full implementation could take up to seven years.

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2029: A countdown for the entire industry

From Google’s announcement to Ethereum’s resource center and Solana’s technical experiments, 2029 is gradually becoming a critical milestone in the post-quantum era. However, the preparedness across the industry varies, especially since the Bitcoin community has yet to reach a consensus. This race against quantum computing is not only a technical challenge but also a long-term test of the industry’s coordination and decision-making efficiency.

This article, which discusses Google’s goal to complete the post-quantum migration by 2029, contrasts with the Bitcoin community’s lack of consensus, first published on Chain News ABMedia.