Integrity Hash

A cryptographic hash is a simple building block for detecting content changes.

PowerShell

Get-FileHash .\artifact.pdf -Algorithm SHA256

Example result:

Algorithm : SHA256
Hash      : 4A1D...
Path      : C:\project\artifact.pdf

Verification

Compare the observed hash with the expected value from the associated evidence.

A matching hash establishes content equality against that recorded value.

It does not by itself establish authorship, provenance or semantic correctness.