Kryptos K4 — Core Dataset v1 (Running-Key Reconstruction)

This dataset contains the core, machine-readable artifacts required to independently verify a publicly released candidate reconstruction of the Kryptos K4 cipher. It includes a complete 1–97 ciphertext index scaffold, an explicit structural null and header mask, an 86-character running-key stream, and a provenance-mapped key-letter table derived from historically grounded Cold War–era sources. The dataset is intentionally limited to verifiable data structures and does not depend on narrative interpretation. Companion documents describing the abstract, derivation, and generative method are published separately on SSRN and GitHub. This dataset is provided to support independent cryptanalytic verification, replication, and scholarly review.本数据集包含用于独立验证公开发布的Kryptos K4密码候选重构方案所需的核心机器可读构件。其包含完整的1至97号密文索引框架、显式结构空值与头部掩码、一段86字符的流密钥序列，以及一份源自冷战时期历史可靠来源的溯源映射密钥字母表。本数据集刻意限定仅收录可验证的数据结构，不依赖任何叙事性解读。阐述该方案摘要、推导过程与生成方法的配套文档已分别发布于SSRN与GitHub平台。本数据集旨在支持独立密码分析验证、复现及学术评审。