Combining SatoshiProof with InformaCam to provide strong image authenticy

[HulaHoopWhonix]

Sometime back I read about you InformaCam project and its goal of providing verification that an image is authentic at the time and place it was taken. I believe this is a very important goal in helping all legitimate activist movements in combating false propaganda propagated through media outlets with an agenda.

Anyhow I came across an Android app called SatoshiProof that authenticates time-stamp information by using the Bitcoin block-chain. I am sure this can probably be extended to other metadata, optionally, such as GPS coordinates for image location data verification too.

https://github.com/ligi/SatoshiProof

To confirm that an image or video posted was not tampered with you could rely on another app Hash Droid to generate a SHA512 checksum and have this information along with the timestamp notarized in the blockchain using the former.

Check it out. It would be great if InformaCam can integrate this and if the SatoshiProof app author decides to collaborate with you guys.

[devrandom]

To clarify for those unfamiliar with blockchain based notaries, a notarization authenticates that a document existed before a certain time and not that it was created at a certain time. Still, I believe this is valuable for many use-cases.

[n8fr8]

Yes, this is something we have mused and dreamed of being able to support. Thanks for the pointer to the SatoshiProof app!

[n8fr8]

Also, InformaCam itself already produces checksum hashes of its metadata and hashes of the pixel values in the image and videos, so I think we can just feed that to SatoshiProof w/o needing HashDroid.

[n8fr8]

BTW, the InformaCam repo is here: https://github.com/guardianproject/InformaCore and our main project tracker is here: https://dev.guardianproject.info/projects/informacam

You can find the latest app builds and public info at https://guardianproject.info/informa

[harlo]

Wow, thanks for the tip!
On Aug 27, 2014 8:26 PM, "Dev Random" [email protected] wrote:

To clarify for those unfamiliar with blockchain based notaries, a
notarization authenticates that a document existed before a certain
time and not that it was created at a certain time. Still, I believe
this is valuable for many use-cases.

Reply to this email directly or view it on GitHub
#510 (comment)
.