If a quantum computer were to break the #SHA256 algorithm, the cryptographic foundation of #Bitcoin, it wouldn't necessarily kill Bitcoin. The Bitcoin network could undergo a protocol upgrade to implement quantum-resistant algorithms.

Additionally, the decentralized nature of Bitcoin allows for community consensus on changes to the protocol. While such an event would pose challenges and require adaptation, Bitcoin has a resilient community and could evolve to withstand quantum threats.

Moreover, ongoing research into quantum-resistant cryptography could mitigate risks even before they materialize, ensuring the continued security and viability of Bitcoin.