🚨 Bitcoin Can Be Made Quantum-Safe Without Any Fork — New Proposal Drops 🔒
A new research paper from StarkWare’s Avihu Levy (CPO) proposes Quantum Safe Bitcoin (QSB) — a way to create quantum-resistant transactions that works today under Bitcoin’s existing rules. No soft fork, no protocol change required.
How It Works:
• Replaces vulnerable ECDSA (elliptic curve) signatures with hash-based puzzles + Lamport signatures (post-quantum secure).
• Uses a clever “hash-to-signature” puzzle relying on RIPEMD-160 preimage resistance (not easily broken by Shor’s algorithm).
• Lamport signatures authenticate the transaction, making it nearly impossible for a quantum attacker to forge or modify spends.
• Fits inside legacy Bitcoin Script limits (pre-SegWit bare multisig-style outputs).
The Catch (Important Trade-offs):
> High compute cost for the sender: ~$75–$200+ in off-chain GPU power per transaction to solve the puzzle.
> Works only with legacy scripts — not compatible with SegWit or Taproot directly.
Best as a last-resort / emergency measure for high-value holdings if quantum threats materialize.
> Still requires moving funds into a special QSB output first (via a normal spend).
This comes amid growing concerns after recent quantum research lowered the bar for breaking ECDSA. QSB offers a creative temporary bridge while longer-term solutions like BIP-360 are discussed.
Quantum computing is still years away from threatening Bitcoin at scale, but proactive ideas like this are welcome. Sustainable long-term fix? Or too clunky for real-world use?
DYOR • This is experimental research, not yet battle-tested on mainnet • High-value users should monitor quantum developments closely
What’s your take — clever workaround or just a proof-of-concept?
