GreenCheckmark - Digitally signed photo
Just like signed PDF files, you can verify their originality
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*** AI slops are obscuring authentic photos and videos. *** GreenCheckmark allows creators to make verifiable content to raise the trust level. 1) Sellers/Realtors: Verifiable photos make their listing stand-out. What you see is what you REALLY get. 2) Newsrooms: Minimize the need to send reporters to the field to take trusted photos, which costs money & time. 3) Citizen Journalism: Assure their viewers that the photos are authentic, captured directly from camera, and unmodified by human or AI.
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PH · launched Oct 14, 2026 · 3 upvotes (top 10%)
- Security
- Compliance & governance
- Prosumer
- Not AI
- Commercial product
- Android
- News
- Photography
- E-Commerce
- Google Cloud Run
Similar launches
See all 138 similar launches →Could you build this?
Partial Building a basic app to sign metadata with a private key is easy, but implementing a tamper-proof provenance system requires integrating hardware secure enclaves and C2PA standards.
What it would actually take: A viable authenticity platform requires adhering to C2PA (Coalition for Content Provenance and Authenticity) specifications and signing images directly at capture time using the mobile device's Secure Enclave / Android Keystore hardware keys to prevent injection attacks. The infrastructure needs PKI certificate authorities, cryptographic verification servers, and client SDKs to ensure media integrity against synthetic manipulation.
Competitors
Other products that read as similar to this one : 138 launches clear the similarity bar, closest 8 shown.
Attention rank: #10 of 139 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 212 days after the earliest competitor.
- Kagazo · ph · 2026-09-13 · 1 upvotes · similarity 0.53
- SignValid · ph · 2026-10-01 · 1 upvotes · similarity 0.46
- PEA – Evidence Authenticator · ph · 2026-10-17 · 1 upvotes · similarity 0.46
- Fake or Real · ph · 2026-09-24 · 1 upvotes · similarity 0.45
- SignDesk · ph · 2026-10-01 · 1 upvotes · similarity 0.45
- Katcher · ph · 2026-10-07 · 1 upvotes · similarity 0.45
- AI Image Detector · ph · 2026-10-11 · 1 upvotes · similarity 0.44
- Saferlayer · ph · 2026-09-15 · 25 upvotes · similarity 0.44
Other launches for this product
- No other launches for this product.
More details
- External ID
- 1279490
- Company
- n/a
- Product
- GreenCheckmark - Digitally signed photo
- Website domain
- producthunt.com
- Cohort
- n/a
- Upvotes percentile
- 0.90
- All tags
- Android, News, Photography, E-Commerce, Google Cloud Run
- AI summary
- digital signature verification for photos
- Manually corrected
- No