# 42 53 44 49 46 46 34 30 — File format magic numbers

For 42 53 44 49 46 46 34 30, offset is 0; format is bsdiff binary patch, verified against its source on 2026-08-03.

- **Hex signature:** 42 53 44 49 46 46 34 30
- **Offset:** 0
- **Format:** bsdiff binary patch

## What the source says

> 42 53 44 49 46 46 34 30 | BSDIFF40 | 0 | | <https://en.wikipedia.org/wiki/Bsdiff> bsdiff binary patch |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).