Bitcoin and Quantum Computing | Hacker News

Bitcoin is described as deflationary and immutable, with Satoshi gone.

Core developers could, in theory, issue a statement and roll back the chain to before an attack.

Changing Bitcoin's cryptography is discussed as a possible response, raising the question whether it would still be Bitcoin.

Altering core properties would undermine the credibility of Bitcoin's immutability.

Q-day means deterministic recovery of private keys from public keys; ECDSA allows public-key recovery from signatures. A likely quantum attack would move large wallets to burn addresses while opening massive short positions, and compromising key material could provoke severe backlash.