If you are on macOS the easiest way to check an SHA256 hash is run this command against the file you are checking (
SHA256SUMS for example):
shasum --algorithm 256 --check --ignore-missing --warn --strict SHA256SUMS
where the hash file should look something like this
This article explains how to verify it on macOS, Windows, and Linux.
I followed the directions for macOS and Windows and they worked correctly.
I didn’t test it out on Linux.