Adam Back Discusses Bitcoin Quantum Security: STARKs and SHRINCS Solutions
Blockstream CEO Adam Back posted that current post-quantum secure zero-knowledge proofs (ZKP) mainly rely on STARKs, but the proof size is large.
He suggested using SHRINCS public keys in commitments and incorporating SHRINCS spend paths in Taproot leaves, with the main advantage being that it does not require prior migration of UTXOs and exposing their active status.
Market Mechanism: Discussions on quantum security solutions enhance expectations for long-term Bitcoin protocol upgrades, directing funds towards related Layer 2 and infrastructure projects, while holders are concerned about address migration costs and security.
Source: Public Information
ABAB AI Insight
Adam Back, as an early contributor to Bitcoin and the inventor of Hashcash, has long focused on protocol layer security. This discussion continues his thoughts on the implementation of post-quantum cryptography in Bitcoin, emphasizing the practicality and size trade-offs of STARKs.
In terms of capital pathways, the SHRINCS and Taproot combined commitment scheme can minimize on-chain migration costs while maintaining UTXO privacy, providing a low-friction path for soft upgrades when quantum computing matures.
Similar to the Taproot upgrade introducing Schnorr signatures or privacy improvements in Lightning, Bitcoin is currently in a preparatory phase for transitioning from classical cryptography to post-quantum secure architecture.
Structural Judgment: Essentially a technical substitution, the SHRINCS+Taproot commitment mechanism proposed by Adam Back achieves quantum secure address migration by utilizing Taproot leaves to hide alternative paths, avoiding large-scale pre-migration and privacy leaks, thus providing a smooth solution for Bitcoin's future quantum threats without sacrificing current efficiency.