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Tue 星期二
10.14
2025
Shielded CSV: Private and Efficient Client-Side Validation https://eprint.iacr.org/2025/068
Nick et al. in paper proposed Shielded CSV protocol, combining PCD abstraction to achieve efficient privacy transactions, requiring only 64 bytes of data written to the blockchain, improving Bitcoin privacy to 100 transactions per second. Nick等人在论文中提出Shielded CSV协议，结合PCD抽象实现高效隐私交易，仅需64字节数据写入区块链，提升比特币隐私至每秒100笔交易。
Notes
- Shielded CSV provides the first truly private transaction construction, requiring only 64 bytes of nullifier written to the blockchain
- Verification cost is low, users only need a single Schnorr signature verification, non-users can ignore data
- Proof size is independent of transaction history, improving efficiency and privacy
- Based on PCD abstraction, supports folding schemes and recursive STARKs etc. implementation strategies
- Extremely scalable, future can further improve the framework and protocol
- High security, protected by ZK proofs, reducing data leakage risk