发表机构
Orbs; Imperial College London（Orbs; 帝国理工学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
提出紧凑屏蔽CSV，一种后量子私有客户端验证区块链，通过链下存储密码学工件并将链上足迹缩减至3个哈希，引入去悲伤器机制仅用哈希承诺防双花，为私有可扩展后量子支付奠定基础。
AI 中文摘要
我们提出紧凑屏蔽CSV（Compact Shielded CSV），一种为后量子时代设计的、用于点对点支付的私有客户端验证区块链。将现有区块链升级为抗量子密码术会大幅增加链上开销。通过将所有大型密码学工件保留在链下，紧凑屏蔽CSV保持了最小的链上足迹，该足迹与底层密码学证明和签名的大小无关。对于单输入交易，链上足迹仅为3个哈希（3x32字节）：一个无效符（nullifier）、一个去悲伤器（degriefer）以及一个对交易的承诺。我们引入了去悲伤器——一种新颖的机制，仅使用哈希承诺来强制执行所有权并防止双重支付，从而完全消除了对链上签名的需求。这些特性使紧凑屏蔽CSV成为私有、可扩展、后量子数字支付的一个有前景的基础。
英文摘要
We propose Compact Shielded CSV, a private client-side validation blockchain for peer-to-peer payments designed for the postquantum era. Upgrading existing blockchains to quantum-resistant cryptography substantially increases on-chain overhead. By keeping all large cryptographic artifacts off-chain, Compact Shielded CSV keeps a minimal on-chain footprint independent of the size of the underlying cryptographic proofs and signatures. For a single input transaction, the onchain footprint is just 3 hashes (3x32 bytes): a nullifier, a degriefer, and a commitment to the transaction. We introduce the degriefer - a novel mechanism that enforces ownership and prevents double-spending using only hash commitments, eliminating the need for on-chain signatures entirely. These properties make Compact Shielded CSV a promising foundation for private, scalable, post-quantum digital payments.
