The other day I downloaded from my GOG.com library the Phantom Liberty DLC offline installers but unlike the base game the installer has no integrity checking option.

So one can't validate if the installer files are 100% identical to the source. This is an issue for those with unstable internet connections since the integrity checker of base game installers has helped me in the past with identifying corrupted files, so that I could redownload them while they still existed on GOG.com (since GOG regularly deletes older installers after new updates).

Does anyone here have the latest v2.21 DLC offline installers and able to post what their checksums are for the 11 files? Any checksum algorithm would be fine (eg: MD5, SHA-256, etc).

FWIW I also contacted GOG support but they merely responded saying if the files were downloaded from GOG.com they're fine, which is unhelpful since files downloaded from GOG.com can be corrupted if there are internet issues (I've had this happen before but the integrity checker of other installers has caught it).

Okay, turns out GOG.com provides their own checksums via XML, found via a forum post.

To obtain the XML one can right-click the download item in Chromium, copying the download address and appending .xml to the end of either the .exe or .bin file paths. The whole-file MD5 checksum is the `md5` attribute value of the parent `file` element in the XML.

So to close out the thread the checksums for Phantom Liberty v2.21 are as follows:

EXE: e9bca056983d7dbf4b809ea8888acd2f
1.bin: a63d718e952d011f0a516de32d6750b3
2.bin: 6ba69d79a3bf717c2aa71f6fdba09aee
3.bin: 5325a05d012ac9fda40fa46fe69eb5d0
4.bin: b1dceea087da6b1a448ec0e13c15043f
5.bin: 29b8c6626e61881866d8aa979fd55624
6.bin: 6ebea14bde7584fca41e22a75534d4ca
7.bin: 76cc7124a17f0d0f5ebf49688183bf93
8.bin: cc413db53772603775a74165d0b674f6
9.bin: bf67ce99ec31f1584328c21ec609b129
10.bin: 4c36192bd8760ded1a77ef2e127080aa

I could verify that all my files match, thankfully.