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>>Quantum-Safe Bitcoin Built by Developer Without Protocol Changes: Could This Be Bitcoin's Solution?

Quantum-Safe Bitcoin Built by Developer Without Protocol Changes: Could This Be Bitcoin's Solution?

crypthub

2 days ago

Quantum-Safe Bitcoin Architecture

Researcher Avihu Levy introduced Quantum-Safe Bitcoin (QSB) without requiring a protocol soft fork. The scheme avoids the risk of quantum computers breaking current ECDSA signatures, which are vulnerable to Shor's algorithm. Instead, QSB replaces standard verification with a hash-to-signature puzzle based on Binohash. This approach anchors security to RIPEMD-160's preimage resistance, not elliptic curves.

Technical Mechanism and Constraints

The QSB construction operates in phases, requiring the prover to find a valid DER signature hash through intensive computing. This process leverages existing Bitcoin scripts and functions, meaning no new opcodes are necessary. The computational cost is estimated to be $75–$150 per transaction on cloud GPUs. Zero-Knowledge Proofs and Dashlink are used to compress proof verification within Bitcoin's established script limits.

Protocol Implications and Market Context

QSB is consensus-valid under Bitcoin's current rules and sidesteps the significant governance challenge associated with a soft fork. Unlike previous methods needing consensus (like BIP-360), this implementation is immediately actionable for any user willing to bear the computational cost. The article also notes the context of Bitcoin Hyper, a Layer 2 project offering native smart contracts with BTC settlement.