Photos arrive in many places
Subcontractors may send photos by email, chat apps, or your own project system. Files can arrive in different formats and from changing crews.
FOR CONTRACTOR TEAMS
Check Every Photo Your Subcontractors Send
Subcontractors take photos with the free Timemark app and send them as usual. You check each photo before you approve the work.
✓ Photo Code printed on every Timemark photo.
PHOTO APPROVAL
Photos alone are not proof of work
Check photos before approving work or payment. A photo by itself does not show when or where it was taken.
The photo details are unclear
You cannot tell from a photo alone if it is old, from another site, or edited after it was taken.
Manual checks take hours
Opening files, comparing details, and checking photos before approving payment takes time when you manage many subcontractors.
HOW IT WORKS
Verify subcontractor photos in five steps
Your subcontractors keep using their usual delivery method. You check the photos before you approve the work.
Take photos with Timemark
Subcontractors use the free Timemark app. Photo Code is on by default, and they do not need to join your Teamspace or take a paid seat.
Send photos as usual
They send job photos through email, chat apps, or your own project system, the same way they do today.
Check a few photos online
Use the free verification page to upload a photo or type its Photo Code. You can check up to 6 photos at a time.
Request API access for large volumes
Timemark will support photo verification through an API inside your own system. Access is by request.
Read the verification result
Each result is Authentic, Fake, or Unable to Verify. A photo needs a clearly visible Photo Code to be verified.
Know what an Authentic result shows
Photo verification checks the photo against the original record stored when it was taken.
What an Authentic result shows
- The photo was taken with Timemark at the recorded time and place.
- The time and address shown on the photo match the original record.
- No picture edits were found compared with features in the original record.
What verification cannot show
- Whether the scene itself was real, such as whether a photo was staged.
- Whether a photo is authentic when its Photo Code was turned off, cropped out, or covered.
- Whether a court, insurer, or agency will accept the photo.
FOR CONNECTED CREWS
Use Teamspace when subcontractors can join
With "Timemark capture only", every photo must be taken in the Timemark app, so there is nothing left to verify. The Field Quality Control page explains how.
View Field Quality Control →
Photos go to the right project
Members take photos in the Timemark app, and photos upload to Teamspace automatically, organized by project.
Set access for each subcontractor
Set project access to Selected Members and member access to Own only, so each subcontractor sees only their own projects and photos.
Frequently Asked Questions
Ask the subcontractor to take job photos with Timemark, then check the photos before you approve the work or payment. An Authentic result checks the recorded time, place, and picture features. It cannot show whether the scene itself was real or staged.
Timemark can verify photos taken with Timemark when the Photo Code is clearly visible. Photos from other cameras cannot be verified.
Timemark compares the photo with picture features in the original record stored when it was taken. If someone later changes the picture with AI or an editing app, the check can show it. The Photo Code must be clearly visible.
Subcontractors can use the free Timemark app and do not need to join your Teamspace for photo verification. Photo Code is on by default on the Free plan. They do not take a paid Teamspace seat.
The free verification page checks up to 6 photos at a time. You can upload photos or type their Photo Codes. Timemark will support larger volumes through an API in your own system. Access is by request.
Only photos taken with Timemark, with the Photo Code clearly visible, can be verified. A photo cannot be verified if its Photo Code was turned off, cropped out, or covered. Photos from other cameras cannot be verified.
API AND MCP
Check Timemark photos in your system or AI tool later
Timemark will support automatic verification of Timemark photos through an API and MCP. Access is by request.
Request Access →