[r1b]

Yes, see https://contentauthenticity.org/

[terr-dav]

An expert's criticisms:

https://www.hackerfactor.com/blog/index.php?/archives/919-Cl...

https://www.hackerfactor.com/blog/index.php?/archives/920-An...

[r1b]

Thanks, I was skeptical too :)

I especially liked the phrase “chain of blame”