# Arthur Hayes on Bitcoin Quantum Risks

> Quantum fears don't mean sell Bitcoin, address reuse is the real threat.
- Title: Arthur Hayes on Bitcoin Quantum Risks · 24/7 Wall St.
- Summary: Quantum fears don't mean sell Bitcoin, address reuse is the real threat. Bitcoin holders should stop reusing addresses to avoid quantum attacks, not sell due…
- Keywords: arthur hayes, bitmex, bitcoin, quantum computing, address reuse, private key, public key, bitcoin address, quantum attack, post-quantum cryptography, coinbase, taproot
- Source: 24/7 Wall St. — https://247wallst.com/investing/cryptocurrency/2026/10/18/arthur-hayes-says-quantum-computing-is-no-reason-to-sell-bitcoin-the-real-risk-is-one-common-habit
- Author: Sam Daodu
- Published: 2026-10-18T20:40:14+00:00
- Read time: 1 min
- Topics: arthur hayes, bitmex, bitcoin, quantum computing, address reuse, private key, public key, bitcoin address, quantum attack, post-quantum cryptography, coinbase, taproot
## Quantum Computing Fears
Arthur Hayes says quantum computing fears shouldn't push people to sell Bitcoin.

> BitMEX co-founder Arthur Hayes says quantum computing fears have Bitcoin holders spooked for the wrong reason
## The Real Risk
The actual vulnerability hiding in plain sight is address reuse among Bitcoin holders.

> the actual vulnerability hiding in plain sight has nothing to do with the technology itself
## Bitcoin Address Security
Each Bitcoin address links to a unique key pair with a private key for spending and public key for verification.

> Every Bitcoin address is linked to a unique key pair. The private key is the secret that allows the owner to spend the coins, while the public key is displayed on the blockchain to verify the owner’s transactions
## Quantum Attack Risk
Reusing addresses exposes public keys to future quantum attacks if coins are continuously received.

> If the owner keeps receiving coins at that address, those new coins rest behind an exposed public key and become a potential target for future quantum attacks
## Exposed Keys Problem
Coinbase research shows 20,000 addresses with at least 50 BTC each have exposed keys.

> Research from Coinbase has highlighted around 20,000 addresses containing at least 50 BTC each that have exposed keys
## Address Reuse Solution
Using a new address for each transaction hides your public key until spending.

> A new receiving address for every transaction keeps your public key hidden until you spend from it
## Quantum Computing Timeline
Quantum computers cannot break Bitcoin's cryptographic security yet and may take years to prepare for post-quantum cryptography.

> Quantum computers do not yet have the capability to break Bitcoin’s cryptographic security
## Market Reaction
Bitcoin rose 26.1% over 60 days despite growing quantum computing warnings.

> Bitcoin rose 26.1% over the 60 days leading up to mid-October, even as warnings about quantum technology grew
## Key takeaway

Bitcoin holders should stop reusing addresses to avoid quantum attacks, not sell due to quantum computing fears.