You cannot verify the checksum against Apple’s official signatures because Apple never signed an ISO.
However, seeking a today usually implies one specific use case: virtualization (running macOS on Windows or Linux via VMware or VirtualBox) or legacy installation on older hardware. Because Apple distributes macOS via the App Store as an application, the ISO format is not officially provided by Apple; it must be created manually or downloaded from third-party archives.
The macOS Sierra ISO is compatible with Mac models from late 2009 to mid-2010 onwards. macOS Sierra System Requirements/Supported Hardware mac os sierra iso
Anyone selling or promoting one is either misinformed or scamming you.
: Maintains the classic, minimalist Apple design with a shallow learning curve for long-time users. You cannot verify the checksum against Apple’s official
An ISO file ( .iso ) is a based on the ISO 9660 standard for optical discs (CDs, DVDs, Blu-rays). When you download an ISO, you’re essentially getting a byte-for-byte copy of a physical disc.
When you see a site offering "macOS Sierra ISO," 99% of the time, it’s a – someone took the .app file, converted it using a terminal command, and wrapped it in an ISO wrapper. The macOS Sierra ISO is compatible with Mac
Before downloading, ensure your hardware (or virtual environment) meets these minimum specs: