Blockstream Secures $4.2 Billion in Liquidity with Post-Quantum Signature Scheme

Blockstream has made significant strides in securing the Liquid Network by implementing a post-quantum signature scheme on its mainnet.

The $4.2 billion Total Value Locked (TVL) on the network represents a critical target for security, with classical ECDSA/Schnorr signatures being vulnerable to potential quantum computer threats.

To address this concern, Blockstream has developed a custom verifier using Simplicity, its smart contract language, allowing users to opt-in to quantum protection without requiring any consensus changes.