🟠 A way to make BTC quantum-safe today — without a protocol upgrade. But it’s expensive

A researcher proposed a method for quantum-safe Bitcoin transactions without a soft fork, meaning it can run right now within existing Bitcoin rules. The catch: it’s too costly for everyday use.

📌 The idea in plain English
— Normal BTC signatures rely on math that a powerful quantum computer could eventually break
— This scheme replaces that with brute-force work: you search for data whose hash “looks like” a valid signature
— It’s hard, expensive, and doesn’t become easy just because someone has a quantum computer

💸 The big downside
— Estimated cost: ~$75–$150 of GPU compute per transaction
— So it’s more realistic for large transfers, not daily payments

⚠️ What it doesn’t fix
— The biggest concern: old addresses and dormant wallets with exposed public keys
— Those legacy coins remain a separate problem this approach doesn’t cover

📌 Bottom line

Think of it as an emergency option for high-value moves, not a mainstream solution. Long-term, the clean fix still points toward protocol-level upgrades.

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