Windows download · Windows 11 x64

Protect and verify files on your Windows computer.

ChaosMark Local Agent 0.2.2 is available at no charge. Create a signed ChaosMark evidence package, save it with your file, and check the file against that record later. The download runs on Windows 11 x64, including offline. Unzip the folder and open the signed app.

Windows 11 (x64)

64-bit (x64) Windows 11. Nothing to install: unzip the folder and open ChaosMark Local Agent.exe.

Download for Windows 11 (x64)

about 11 MB

Extract the ZIP, then open ChaosMark Local Agent.exe. Protect and Verify run on your computer. Keep the folder to use the app again.

This exact file was tested independently on Windows 11 x64: downloaded through a normal browser, run from a standard (non-administrator) account with Microsoft Defender at its default settings, with no administrator prompt. Protect, Verify, tamper detection, a second launch, close and relaunch, and cleanup all behaved as expected: 22 of 22 test cases passed and no defects were found. Windows 10 was not part of that testing.

Signed by SapienCX. The Authenticode signature is on ChaosMark Local Agent.exe and carries a trusted timestamp. Windows still applies its normal checks to downloaded software, and security products other than Microsoft Defender were not part of the independent test.

Verify your download

The checksum lets you confirm that the file you downloaded matches the exact measured bytes shown here. It does not establish who published the file.

Filechaosmark-local-agent-windows-x64-0.2.2.zip
Exact size11,604,561 bytes
SHA-256f70d52fab6df7d68327f3ca6a536586b6b491c589f1f96c08cb1c1045017d0c9

Run this where you saved the file, then compare the result with the SHA-256 above:

certutil -hashfile chaosmark-local-agent-windows-x64-0.2.2.zip SHA256

What the Local Agent does

Protect creates ChaosMark evidence for a file. Verify checks a file against that evidence later. Protect takes photos, documents (PDF and Word), audio, video and text files up to 1 GB, recognised by file name; Verify takes any file and checks it against its .chaosmark evidence package. This website does not check .chaosmark packages. Both run on your own computer.

Keep the evidence with your file

Save the .chaosmark package beside the original file. Open Verify in the Local Agent to check the file against its signed record whenever you need it.

Supported platform

Windows 11 x64

Portable ZIP, signed executable, no administrator rights required, and offline Protect and Verify.

Free · no account

Online photo check

Check JPG and PNG photos up to 1 MB in your browser. No account required.

Check a photo

Demonstration

Hosted Create

The public walkthrough does not issue evidence. Controlled access is an enterprise engagement.

Open the demonstration · Request a technical evaluation