STAMP

Social media Testing and Analysis of Metadata Preservation

This project updates the 2015 analysis by testing the retention of C2PA embedded metadata in images uploaded to various social media platforms, image hosting services, and online applications. The goal is to determine whether the content provenance data is preserved.

An image with C2PA embedded metadata was uploaded to various social media platforms, image hosting services, and online applications to check whether the content provenance data was retained. C2PA metadata was verified using the official verification tool. The image was created with OpenAI's DALLE3 which contained a valid and signed C2PA manifest. C2PA metadata was verified using the official verification tool.

Site	C2PA preserved	Category	Date	Archive image	Post URL
DALLE3 Original	🟢 Yes	Generative AI	08/06/24	🖼️
Facebook	❌ No	Social Media	08/22/24	🖼️	Link
Instagram	❌ No	Social Media	08/07/24	🖼️	Link
Twitter/X	❌ No	Social Media	08/08/24	🖼️	Link
LinkedIn	❌ No	Social Media	08/23/24	🖼️	Link
Reddit	❌ No	Social Media	08/22/24	🖼️	Link
Quora	❌ No	Social Media	08/22/24	🖼️	Link
Pintrest	❌ No	Social Media	08/22/24	🖼️	Link
Tumblr	❌ No	Social Media	08/22/24	🖼️	Link
Yelp	❌ No	Social Media	08/22/24	🖼️	Link
Imgur	❌ No	Image hosting	08/22/24	🖼️	Link
Flickr	🟢 Yes	Image hosting	08/22/24	🖼️	Link
Google Sheets	🟢 Yes	Application	08/22/24	🖼️	Link
Google Docs	❌ No	Application	08/22/24	🖼️	Link
Google Slides	❌ No	Application	08/22/24	🖼️	Link
Google Photos	🟢 Yes	Application	08/22/24	🖼️	Link

Excluded sites

• WhatApp (mobile chat)
• Snapchat (mobile chat)
• Clubhouse (mobile chat)
• Twitch (video)
• Youtube (video)
• TikTok (video)
• Facebook Messenger (mobile chat)

Notes

• In Google Sheets used right-click -> Save As.
• In Google Docs and Google Slides saved to Keep and then downloaded.
• Instagram does not provide an easy way to download files. Extracted image was taken by finding the original within the source.
• LinkedIn was tested with a personal account and the test posted was deleted.