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Introducing post-quantum security to Bitcoin leads to major downsides, experts note

Introducing post-quantum security to Bitcoin leads to major downsides, experts note
Bitcoin post-quantum security trade-offs

Adding post-quantum security to Bitcoin comes with very significant downsides, according to experts @n1ckler and @kudinov_mikhail.

Marty Bent highlighted their discussion from December 2025 in the context of Blockstream’s latest research update.

In December 2025, Marty Bent cited expert concerns that elliptic curve cryptography such as secp256k1 could eventually fail due to advances in quantum computing, as reported in a previous analysis. Earlier, Ledger confirmed that implants in CryptoBilis reseller units transmitted bitcoin wallet seed phrases over LTE, exposing additional vectors of risk for hardware wallet users, according to a company statement. These incidents have fueled ongoing discussions about the urgency and challenges of upgrading Bitcoin's security.

This material may contain third-party opinions, none of the data and information on this webpage constitutes investment advice according to our Disclaimer. While we adhere to strict Editorial Integrity, this post may contain references to products from our partners.

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