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Quantum computers and btc If you never reuse Bitcoin addresses and only use hashed (P2PKH or SegWit) addresses, your funds are **currently safe** from quantum attacks—even in a future with quantum computers. This is because your public key remains hidden until you spend, limiting exposure. A quantum computer would need to break your key within the short window between transaction broadcast and confirmation, which is extremely difficult. However, **any address that has ever been used to send funds** (thus exposing its public key) or **Taproot (P2TR) addresses** (which reveal public keys on receipt) are at higher risk over time. The safest practice: use each address only once, stick to modern wallet standards, and stay informed as the network may eventually adopt post-quantum cryptography. #nostr #cryptography #btc #bitcoin #quantumresistant #selfcustody #satoshi