Timestamp Photos vs Verifiable Photos: The Difference
A date stamp on a photo can be redrawn in any editor. See how verifiable photos link each image to a server record anyone can check, and when to use them.
Tag
#photo verification
4 articles
Detect Edited Photos with a SHA-256 Fingerprint
SHA-256 in plain language: what a match proves, what a mismatch means, why photos sent via Zalo or Messenger never match, how to compare files.
Trusted Time vs Phone Time: How Photo Timestamps Get Faked
How photo timestamps get faked (phone clock, EXIF edits, re-stamping) and how server-synced time plus a monotonic clock helps, with honest limits.
QR Photo Verification: How Recipients Check a Photo
How QR photo verification works for recipients: what the page shows, why the area is rounded, what integrity flags mean and how to compare files.