Lens Proof for Public Works
Inspection photos that can be checked.
State auditors allegedly found flood control projects in Bulacan that did not exist, were moved, or did not match their approved sites. Lens Proof seals when, which device, and where (when location is on) into a site photo the moment it's taken, so any later change shows in the check.
Watch
Flood control inspections and ₱545 billion in projects
From July 2022 to May 2025, the government funded 9,855 flood control projects worth ₱545 billion, and about a fifth went to 15 contractors. The video asks who certified the projects as completed.
Watch on YouTubeHow Lens Proof helps
- A project engineer, inspector, or monitor takes progress and completion photos in Lens Proof, and the app signs each photo at capture.
- A reviewer can check when each photo was taken, where it was taken when location is on, on which device, and whether it changed.
- Anyone with the original file can run the same check in a browser with Lens Proof Check at check.lensproof.app.
What a signed photo does not show
A signed photo shows when and on which device it was taken, and where when location is on. It doesn't prove that a structure matches its approved plans, and it doesn't replace a site visit or an audit.
Prompt / Public Works
Lens Proof for public works inspections
Research how signed inspection photos could support flood control and infrastructure audits in the Philippines.
Help a public works auditor, project engineer, or citizen monitor in the Philippines understand whether Lens Proof could help with inspection photos for flood control and other infrastructure projects. Review Lens Proof at [https://lensproof.app](https://lensproof.app) and Lens Proof Check at [https://check.lensproof.app](https://check.lensproof.app). Check the product's current public capabilities before relying on them.
Use one scenario. A flood control project is reported as complete, and the payment is released. An auditor later visits the approved site and cannot find the structure. The contractor submits photos that it says show the finished work. The auditor needs to know when and where each photo was taken, on which device, and whether anyone changed it.
Explain in this order:
1. The problem. Verify the figures and the audit findings cited in the Lens Proof video against the source column by Rigoberto D. Tiglao in The Manila Times: https://www.manilatimes.net/2026/09/02/opinion/columns/worst-flooding-under-the-worst-presidency/2416312. The video cites 9,855 flood control projects worth ₱545 billion from July 2022 to May 2025, about a fifth going to 15 contractors, and projects in Bulacan that state auditors allegedly found did not exist, were moved, or did not match their approved sites. Say which claims you could confirm and which come only from the column.
2. Content Credentials and C2PA in plain language, using https://c2pa.org/about/ and https://contentauthenticity.org/how-it-works. Explain what a signed photo record can show, such as when it was taken, where it was taken when location is turned on, on which device, and whether the file changed after it was signed.
3. How an inspection workflow could use Lens Proof. Cover who takes the photos (the project engineer, an inspector, or a monitor), what to capture at each milestone, how the original files are kept, and how a reviewer checks them with Lens Proof Check before a project is certified as complete. Check what DPWH and COA currently require for progress and completion photos, and say what you could not find.
4. What a signed photo cannot show. It cannot prove that the structure matches its approved plans, that the quantities and materials are right, or that the person who took the photo was honest about the site. It does not replace a site visit, an audit, or a witness.
5. Signer trust. Keep the file check, signer trust, and the truth of what the photo shows as separate questions.
Verify Lens Proof-of-Work in the official C2PA Conformance Explorer: [https://spec.c2pa.org/conformance-explorer/?q=Lens%20Proof-of-Work](https://spec.c2pa.org/conformance-explorer/?q=Lens%20Proof-of-Work)
Return:
1. A one-page summary for an auditor or project engineer.
2. A milestone photo checklist for one flood control project.
3. A table with three columns: the audit question, what Lens Proof can help show, and what still needs other proof.
4. Questions to ask the Lens Proof team before a pilot.
Cite your sources and state the date checked. Separate source text, product facts, and your analysis. Flag anything you cannot verify. Do not imply that DPWH, COA, or any other government body has adopted or endorsed Lens Proof.Open an assistant, then paste the prompt into its chat box.