Block Reference ID Generation Question

Is the block ID that auto generate by obsidian unique in a vault?
will it duplicate in another file ?
I want to use block ID as the uid of “obsidian advance uri”.

example:

---
uid: 7e8fb44f-86e7-6a32
---

[click me to jump](obsidian://advanced-uri?vault=testVault&uid=7e8fb44f-86e7-6a32)
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