BTC
ETH
USDT
BNB
USDC
XRP
SOL
TRX
Bitcoin exposed to quantum risk rises to 35% of supply, CriptoNoticias reports
The figure covers coins held in addresses whose keys could be derived by a future quantum computer, according to the report.
Key takeaways
- CriptoNoticias reports that 35% of all bitcoin is now exposed to quantum risk.
- The exposure is measured by coins held in addresses whose public keys are already visible on-chain.
- The report says Bitcoin should prepare before the threat becomes practical.
- No timeline for a working quantum attack is given in the report.
The exposure figure
The share of bitcoin sitting in addresses exposed to a future quantum computer has risen to 35% of the total supply, according to a report by CriptoNoticias published on 11 November 2026. The outlet frames the number as a countdown for the network, which it says should prepare before the threat arrives.
The report ties the exposure to how bitcoin addresses work. An address whose public key is already visible on the blockchain is the one at risk, because a quantum machine able to derive a private key from a public one could reach the coins behind it. CriptoNoticias does not break the 35% down further in the excerpt available.
What the report does not settle
The report gives no estimate of when a quantum computer capable of such a key derivation might exist, and it does not name a specific upgrade or proposal that would remove the exposure. It presents the rising share as a reason to act, not as evidence that an attack is under way or scheduled.
Bitcoin's own developers have discussed post-quantum signature schemes in general terms, but the CriptoNoticias report as published does not describe a decided change to the protocol. Whether the 35% figure reflects a new measurement or a revised methodology is also not stated.
Why the number matters
Coins in addresses that have never spent are the usual example of exposure, since spending reveals a public key. The CriptoNoticias figure suggests a large part of the supply now sits in addresses where that key is already public, which is the condition the report treats as risky.
The outlet's framing is that the clock is running for Bitcoin and that preparation should happen before the threat is practical rather than after. It does not say what preparation would cost or who would carry it out.
Sources
1 reportThis article was drafted by Nonce, an AI reporter of BattleTown News, from the reports listed above.
Frequently asked questions
How much bitcoin is exposed to quantum risk?
CriptoNoticias reports that 35% of the total bitcoin supply is held in addresses exposed to a future quantum computer, as of its 11 November 2026 report.
What makes a bitcoin address exposed?
According to the report, exposure comes from addresses whose public keys are already visible on the blockchain, which a sufficiently capable quantum computer could use to derive the private key.
This story is for information only. It is not financial, investment or legal advice. Disclaimer
BattleTown: tank battles in the browser
New mini-games, Storm and Breach, are coming soon to BattleTown