Elon Musk Backs Theory That Breaking Bitcoin (BTC) Needs at Least 835 Logical Qubits

Musk's Five-Word Reply Ignites the Debate

Bitcoin (BTC) picked up an unexpected talking point this weekend after Elon Musk engaged with a fringe physics theory whose supporters claim it rules out quantum computers ever breaking the network's cryptography. On August 29, Musk replied to a post from the Institute of Art and Ideas about the research of Oxford physicist Tim Palmer, writing that the universe is integer in units of Planck cubes — a five-word endorsement of Palmer's central argument that nature comes in fixed, discrete chunks rather than a smooth continuum. Notably, Musk said nothing about private keys, digital signatures, or Bitcoin itself; his comment addressed the underlying physics, not crypto. That distinction did not stop the market from running with it. A day later, investor Fred Krueger amplified the exchange, arguing that "Bitcoin may already be quantum-safe" because the latest estimates require at least 835 logical qubits to break the network's signatures using Shor's algorithm — the quantum method that, in theory, could crack the elliptic-curve cryptography securing Bitcoin wallets. Krueger added that Musk and fellow investor Steve Jurvetson had both commented positively on the research, framing the tech billionaire's engagement as tacit validation. The reality is narrower: Musk agreed with a metaphysical claim about how the universe is structured, and the leap from that reply to "Bitcoin is safe from quantum attack" is one traders made on their own. Still, with quantum risk a recurring bear thesis against the network's long-term security guarantees, even an oblique signal from the world's most-watched technologist was enough to move the conversation.

the universe is integer in units of Planck cubeshttps://x.com/elonmusk/status/2093626798575624520?ref_src=twsrc%5Etfw

The 835-Qubit Estimate Keeps Shrinking

Palmer's credentials are genuine, though they sit outside cryptography. He is a Royal Society fellow, elected in 2003, who spent his career building weather-forecasting models at Oxford. His paper appeared in the Proceedings of the National Academy of Sciences (PNAS) in March and argues that nature contains no smooth mathematical continuum — which means quantum entanglement eventually hits a hard wall. Palmer places that wall at 200 to 400 qubits on today's hardware and insists machines will never exceed 1,000. Standard quantum theory sets no such ceiling, leaving him in a scientific minority until hardware proves the point. The numbers that matter for Bitcoin keep moving in the wrong direction for attackers, however. A July study by Han Luo and colleagues put the requirement for breaking Bitcoin's signatures at roughly 835 logical qubits, down from earlier estimates of 1,098 and 1,175 — a shrinking target that security researchers are watching closely. Hardware remains nowhere near either figure: IBM plans a machine with 200 logical qubits by 2029, a system that would test Palmer's proposed floor without touching Bitcoin's cryptography. The market has treated the entire debate as background noise, with BTC trading near $78,449 after a 1.17% daily gain. Developers, meanwhile, are not waiting on physics — a post-quantum migration proposal for the protocol is already circulating, covering how signature schemes could eventually be swapped out. Readers tracking the market in real time can follow live spot and futures prices on MEXC.

2029 as the Real Test Date

Our reading of the primary record — Musk's own August 29 post and Krueger's follow-up — is that both sides of this story are being stretched. Musk endorsed a heterodox physics paper; Krueger converted that into a Bitcoin-security headline. The verifiable facts are narrower: an estimated 835 logical qubits would be needed to break current signatures, IBM's 200-qubit machine lands around 2029, and Palmer's ceiling theory remains unproven. COINOTAG's view is that the honest takeaway is patience — the shrinking qubit estimates deserve monitoring, and the genuine stress test of both the physics and the protocol arrives near 2029.