Verified when it matters, flexible when it doesn't.
Trustamp stamps every shot with the time and GPS, and witnesses them to our server so the when and where hold up — with an optional C2PA Content Credential to seal the image itself.
From snapshot to verifiable proof in three steps.
Take a photo. Trustamp records a server-verified timestamp and your real GPS — and, if you turn on C2PA, seals the image with a tamper-evident Content Credential, right on your phone.
"Witnessing" sends a tiny time + location ping to our server — never the photo, and no fingerprint of it. Our server is the clock: the witness code is issued before you shoot, so the capture can't be back-dated even if the phone's time is wrong or spoofed.
verify.trustampcamera.com/w_8f3a…✓ Witnessed
demo
Need proof later? Share a public verification link showing the server-anchored time and location. It works for any audience, even on platforms that strip metadata — because the record lives on our server, not in the file. Turn on C2PA and the image carries its own tamper-evident credential too.
Not everyone needs every shot to be proof. We don't either.
Prove the package landed at the right door, on time. Settle disputes with insurance, customers, or platforms in seconds.
Property managers, HVAC techs, surveyors — document every site visit indisputably, with a PDF the client can't dispute.
Photos that hold up. Server-witnessed, tamper-evident, and built for the open C2PA standard adjusters can check.
Honest, head-to-head. We'd rather show you the difference than hide it.
| Trustamp | Timemark | |
|---|---|---|
| Verification | ✓ Open — built for C2PA, public verify link | ✗ Closed — timemark.com only |
| Detects image tampering | ✓ Optional C2PA credential breaks on any edit | ✗ Time / GPS focus only |
| GPS refinement | ✓ Doorplate level, edits noted | ✗ Not allowed |
| Cancellation | ✓ One tap, in-app | ✗ Documented friction |
Two big differences. (1) Trustamp is built for the open C2PA standard: turn on C2PA and any tool — Adobe Photoshop, Chrome, third-party verifiers — can independently verify your photo's Content Credential (our issuer certification is still in progress, so tools confirm the credential's integrity but flag the issuer as not-yet-trusted). A public verify link already lets anyone check a photo's time and place without our site. Timemark uses a closed system where verification only happens on their website. (2) Trustamp lets you refine GPS at the doorplate level (country/city/street are locked), while Timemark doesn't allow GPS correction at all — a top complaint in their one-star reviews.
When you witness a shot, Trustamp sends a tiny time + location ping to our server — a few hundred bytes, no photo and no fingerprint of it. The trick: the witness code is issued by our server before you take the photo and is shown in the watermark, so the capture can't predate it. That gives an unforgeable, server-anchored answer to when and where — the part a phone clock or a screenshot can't be trusted for.
Yes — but only in Watermark mode, which gives you full creative control with no verification claim. In Witness mode, the time and place are anchored from capture (and, with C2PA on, the image content is sealed too). You can still refine the address text within the GPS-derived street boundary, and every refinement is transparently noted.
Two independent layers. (1) Time and place: the witness record is signed with our server-held key and bracketed by a code issued before capture — we can prove we anchored it, and it can't be back-dated. (2) The image itself: turn on C2PA and the JPEG carries an open Content Credential, so any C2PA-aware tool (Adobe Verify, Chrome) can confirm the pixels weren't edited. Our C2PA issuer certification is in progress, so tools read the credential and confirm its integrity today, and will show the issuer as trusted once Trust List certification completes.
Yes. Photos and watermarks are generated entirely on-device. The "witness" step queues if offline and uploads when connectivity returns. The credential timestamp uses the time of the original capture (witnessed when you get back online), so off-grid shoots aren't penalized.
Honestly? Instagram, X, WeChat, and most platforms strip metadata on upload, so an embedded C2PA Content Credential can be lost there. That's why we lead with the route that always works: a public verify.trustampcamera.com link for the time and place, which holds up on any platform even after compression. When you keep the original file (email, Dropbox, AirDrop, Adobe tools), the embedded C2PA credential adds tool-native image verification on top.
Turn on C2PA and, because Trustamp uses the open C2PA standard, the Content Credential in your JPEG is readable by any C2PA-aware tool — without using Trustamp at all:
trustampcamera.com/verify/<id> — the public route, even after platforms strip EXIFImportant: issuer trust tier. Trustamp's signing certificate is currently self-issued — our C2PA Trust List application is in progress. This means the tools above read the credentials fine, but mark the issuer as "untrusted" until our Trust List inclusion. Timemark photos, by contrast, can only be verified on timemark.com — there's no open standard, no cross-tool reading, no independent verification.
Free to download, no account required. Shoot a watermarked photo and get a public verify link in your first minute.
Android now. iOS is on the roadmap.