# Unique IDs

Since RC 4, (tested under RC3.7.x) all the blocks generated by GutenBricks will have unique IDs. A unique ID is made of a combination of the Bricks Builder's original ID and a block ID generated when the user inserts a new block:

Example:

```
// Bricks Builder ID
brxe-8e9775

// GutenBricks ID with a block ID as a suffix to ensure uniqueness 
b-8e9775_ls8i5k7o 
```

<figure><img src="https://115503993-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FVRpgq7lelxP9PFleE0QT%2Fuploads%2FfHBSArDDUPr41xgo8ehe%2FScreenshot%202024-02-28%20at%209.28.40%E2%80%AFPM.png?alt=media&#x26;token=ef7d4237-fb57-4536-b00f-c6795f432ff3" alt=""><figcaption><p>Here a same template rendered 6 times.</p></figcaption></figure>

Note: the prefix "brxe" is replaced with "b-" to reduce the length of ID.