Google’s New Quantum Breakthrough Revives Old Crypto Fears — Bitcoin, XRP, Solana, and Cardano Shrug It Off

Google’s Willow quantum processor delivers a verified computational advantage that might compromise Bitcoin’s elliptic-curve cryptography.
Bitcoin maintained a price near $109,000 following the announcement, while Solana rose to $187 and XRP stayed flat near $2.43.

On October 22, Google Quantum AI revealed its Willow chip, a 105-qubit superconducting quantum processor that reportedly outperformed the best classical supercomputers on a specific test algorithm (Quantum Echoes).

The company described this as a “verifiable quantum advantage,” meaning their quantum computer did something classical computers can’t feasibly replicate. Google claims a speedup of approximately 13,000 × for certain problem instances compared with the best classical algorithm on a top‐tier supercomputer.

It features high-fidelity gate operations: single-qubit gate fidelity ~99.97 %, two‐qubit gate fidelity ~99.88 %, and readout fidelity ~99.5 %. The chip is marketed as “state-of-the-art” and built to scale toward fault-tolerant quantum computing.

Why the Crypto Market Is Paying Attention

Google’s breakthrough has rekindled worries that, in the future, such quantum machines could break the cryptography that secures digital systems, including Bitcoin (BTC), Ripple (XRP), Solana (SOL), Cardano (ADA), and other cryptocurrencies.

The old fears concern quantum computing’s potential to break blockchain security, specifically the cryptographic algorithms that protect crypto wallets and transactions. At the core of this concern is the fact that different layers of cryptocurrency systems rely on cryptography that could eventually be compromised by quantum technology.

For example, wallets and digital signatures use the Elliptic-Curve Digital Signature Algorithm (ECDSA), which quantum computers could theoretically exploit to derive private keys from public keys, enabling theft. Mining and proof systems, such as Bitcoin’s SHA-256 hashing, are less vulnerable but could still be optimized through quantum search techniques like Grover’s algorithm.

Smart contracts and key management systems also depend on public-private key pairs, exposing them to the same ECDSA vulnerabilities.

Therefore, when Google demonstrated this leap in quantum computing capability, investors and developers were reminded that if quantum technology progresses faster than expected, it could one day crack these foundational protections.

Despite this being a major milestone in computing, its direct impact on the crypto market has been minimal so far. Bitcoin showed little reaction to the news, dipping briefly to around $106,000 before closing near $107,000, and it now trades at roughly $109,004.

The market’s fear index has fallen to 25, still within the “fear” zone but one step above “extreme fear,” reflecting a cautious but steady sentiment among investors. For nearly two weeks, Bitcoin has been oscillating between its 50- and 200-day moving averages, showing little sign of breaking in either direction.

Elsewhere, XRP slipped slightly from $2.43 to $2.38, while Solana (SOL) held firm around $187, showing virtually no movement tied to the quantum news.

Macroeconomic factors may soon take center stage, especially with the Federal Reserve’s policy committee meeting scheduled for October 28–29, where a potential interest rate cut could lower borrowing costs and inject new optimism into risk assets, including crypto.

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