探外 · Research 与核对Reach Out · Research & Checks.

问题：Obsidian 和 Notion 在「数据归谁、能不能本地保存」上到底差在哪？
范围：覆盖存储位置、导出格式、加密、隐私条款；来源偏官方文档与条款原文、近一年；排除测评号软文。
产出：一张对比表，行是上面四项，列是两款产品。
规矩：
- 每格标出处，出处要能点开。
- 条款互相打架的地方贴原文并列，别替我调和。
- 官方没写清的，单列一节「还没查实的」，不要用常识补。
- 每格后面标一个日期：这条信息是什么时候的。Question: how do Obsidian and Notion actually differ on 'who owns the data, can it live locally'?
Scope: cover storage location, export formats, encryption, privacy terms; favor official docs and the terms themselves, past year; exclude sponsored review posts.
Output: a comparison table — rows are those four items, columns are the two products.
Rules:
- Cite each cell, and make the citation openable.
- Where the terms contradict each other, quote both side by side — don't reconcile them for me.
- Where the official source is unclear, put it in a separate 'not yet verified' section; do not fill the gap from general knowledge.
- Tag each cell with a date: when is this information from.

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