The identifier 9d91003d4080b03d40742c819ea5228e refers to the Profile ID

Because this profile is "well-known," it can sometimes be used in image verification to detect if an image has been altered. For instance, forensic tools like the MeVer Image Verification Assistant analyze such metadata to provide a "forgery localization mask," highlighting potentially forged areas in red. Image Verification Assistant - MeVer

Color Management: As a Profile ID, it helps software (like image editors or web browsers) recognize the uRGB profile embedded in a file. This ensures that a photo taken on one device looks the same when viewed on another.

In digital forensics and image verification, this specific Profile ID is used to determine if multiple images were captured or processed by the same type of device or software.

Could you please clarify:

If you are analyzing an image file (JPEG, PNG, etc.), you can find this ID within the EXIF metadata. Tools like ExifTool are commonly used to extract this information. Key technical specifications of this profile include: Profile Version: 2.1.0 Color Space: RGB Connection Space Illuminant: Red Matrix Column: Green Matrix Column: Blue Matrix Column: 3. Usage in Digital Forensics

If you are analyzing image metadata (Exif data) and encounter this ID, it typically represents the following technical attributes: Color Space: uRGB (compatible with the standard sRGB color space). Rendering Intent: Perceptual. Device Attributes: Reflective, Glossy, Positive, Color. Illuminant: Connection space illuminant values of 0.9642 1 0.82491 Copyright: Often released under CC0 (Creative Commons Zero) terms. Why This is "Helpful"

In broader data management, the use of these identifiers allows for: