Having read (I think) the essentials of your work, I still think simple provenance scenarios work.
1. Nadia works for BigPub, which wants to use C2PA
2. BigPub tells Tania "take a selfie this morning on your C2PA-equipped camera and send it to us"
3. Nadia does so. Now BigPub knows Nadia's public key.
4. In future, when a pic comes in from Nadia, they check the C2PA against the remembered public key.
All this establishes is provenance, but I think it works fine?
Tim Bray /
npub19u…253cv
2024-08-07 16:15:51
in reply to nevent1q…00dm
Author Public Key
npub19ua0a9gu7ggm693nqm6knq3zutckcfde9p6ra7a8fu73xhvy3sgqz253cvPublished at
2024-08-07 16:15:51Event JSON
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"content": "Having read (I think) the essentials of your work, I still think simple provenance scenarios work.\n\n1. Nadia works for BigPub, which wants to use C2PA\n2. BigPub tells Tania \"take a selfie this morning on your C2PA-equipped camera and send it to us\"\n3. Nadia does so. Now BigPub knows Nadia's public key.\n4. In future, when a pic comes in from Nadia, they check the C2PA against the remembered public key.\n\nAll this establishes is provenance, but I think it works fine?",
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