The quantum clock is ticking: it's Bitcoin's problem, not Ethereum's
Citi analysts and Google Quantum AI researchers have warned that Bitcoin faces significant quantum computing risks due to its foundational cryptography. The report suggests that Bitcoin is more vulnerable than Ethereum, prompting institutional concerns about the long-term security of digital assets.
Why it matters
This highlights a critical security vulnerability in the world's largest cryptocurrency that could impact institutional investment strategies and long-term asset viability.
Share Share this article Copy link X icon X (Twitter) LinkedIn Facebook Email The quantum clock is ticking: it s Bitcoin s problem, not Ethereum s A recent research note published by Citi analysts reached a conclusion about quantum risk that should give every institutional bitcoin holder pause, Tabar explains. By Samir Tabar | Edited by Betsy Farber Jun 10, 2026, 4:07 p.m. 4 min read Make preferred on (Andriy Onufriyenko/Getty Images) If bitcoin and Ethereum had been invented on the same day, nobody would have heard of bitcoin. I sold every bitcoin Bit Digital held and deployed the proceeds into Ethereum. I have built one of the largest corporate Ethereum treasury positions in the world and said, on the record, that we will never sell it. People have asked me to articulate the single strongest argument for that conviction. On March 30, 2026, that argument arrived. Last month, Citi confirmed it.
The article reports on research findings from reputable institutions without taking a personal stance, though it features a quote from an investor who is biased toward Ethereum.
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