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KAS Kaspa v2.1.0 更新详解
Kaspa 开发团队已发布 v2.1.0 版本。这是一次集功能增强、安全加固与维护优化于一体的综合版本，强烈建议所有节点运营商、矿工及基础设施管理者立即安装。
核心变更：P2P 协议升级与同步优化
本次更新的首要变化是将 P2P 协议版本提升至第 11 版（Protocol Version 11），并引入了分块初始区块下载（Chunked Initial Block Download, IBD）功能。大型同步载荷（包括修剪点证明、区块头及可信数据）现以 20 MiB 为单元进行流式传输，从而消除了可能导致节点同步出现消息帧处理瓶颈和超时的隐患。同时，协议 11 完全向后兼容协议 10 的节点。
除了同步性能的改进，该版本还将最大允许的 P2P 消息大小从 1 GB 降低至 256 MB，并实施了严格的链路层交易和区块限制，包括将最大区块大小限制为 2 MB。这些措施旨在有效遏制垃圾信息和拒绝服务（DoS）攻击。
此外，此次更新还修复了 Stratum 桥接工具中的安全漏洞。Stratum 桥接是允许矿池将其基础设施直接连接到 Kaspa 节点的关键组件。
更广泛的安全加固与架构演进
In addition to network-level changes, the v2.1.0 version also includes workspace-wide arithmetic security audits and streamlined optimizations for Toccata consensus flow. At the same time, the project extracts an independent zero-knowledge SDK library (kaspa-txscript-zk-sdk).
Arithmetic auditing enhances the security of node counters, retry loops, and arithmetic operations by enforcing the 'clip::arithmetic_side_effects' check in production-level codebases through formal policies documented in`docs/ ARITH-SAFETY.md`.
This release builds on the momentum of Toccata's hard fork. The Toccata hard fork was activated on June 30, 2026, introducing the native Layer-1 contract system (Covenant Systems) and zero-knowledge verification capabilities. v2.1.0 consolidates the infrastructure surrounding this upgrade and improves the security baseline before further protocol development.
Operators who have not been upgraded may face connection problems and be exposed to spam vectors that the upper limit on the size of new messages is intended to block. Currently, the kaspa:native version has been officially released in the official Kaspa GitHub repository.
