Schnorr signatures

The Bitcoin Cash community is reviewing a new proposal to integrate post-quantum and hybrid signature schemes into the protocol. This upgrade utilizes a new opcode to streamline the verification of advanced cryptographic algorithms while maintaining compatibility with existing address formats.

This article explores the utility of proposed Bitcoin opcodes OP_CSFS and OP_CAT in creating advanced covenant functionalities. It details how these primitives can be used to enforce transaction templates through signature-based introspection.

The article explores the technical and governance-related dilemma of preparing Bitcoin for a quantum computing era. It compares the efficiency of using ZK STARKs for signature aggregation against the more controversial approach of increasing block size.