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PRO SESSION (API): A Blockchain-powered Full Stack Citizen Photo Journalism


Shiva Kintali
True Dat, Founder & CEO

Dr. Shiva Kintali is the Founder & CEO of True Dat. Before starting True Dat, he taught in the Computer Science department of Princeton University for four years.

He is a frequent public speaker on AI, Blockchain, Cryptography and Game theory and their socio-economic and cultural impact.

His (academic and industry, theoretical and practical) experience spans algorithm design, complexity theory, cryptography, machine learning, blockchain protocols, algorithmic game theory, structural graph theory, natural language processing, information retrieval, high-performance computing, compiler design and large-scale graph algorithms. He is researching Blockchain protocols (scalability, stability and privacy) since 2012.

He received his PhD in Computer Science from Georgia Institute of Technology, Masters in Computer Science from University of Southern California and B-Tech in Computer Science and Engineering from Indian Institute of Technology, Kharagpur.


Everyday thousands of people are bullied, blackmailed, silenced and scammed online using fake photos, fake videos and misinformation. It is getting easier to (i) selectively edit photos, videos and audio, (ii) manipulate metadata of media content and (iii) even generate fully artificial videos (Eg: deepfakes). Fakes are used to spread misinformation and create socio-economic and political chaos. This is leading us towards a post-truth dystopia. Also, sometimes malicious people falsely accuse genuine videos (or photos, audio) as fakes, to promote their self-interests.

In this talk, I will present an implementation of a Blockchain-powered 'truth machine' (a mobile app) to enable a global borderless decentralized citizen photo journalism. Our technology incentivizes the spread of truth and controls misinformation before it spreads. Our app lets anyone create, share, buy, sell and trade cryptographically-signed verifiable photos and videos. The users may choose to be anonymous, pseudonymous or use their real identities.

Our Blockchain securely tracks the provenance of the photos and provides a verifiable certificate to prove that they are not fake or photoshopped or deepfaked. The digital rights of the photos are tracked using our blockchain and transferred seamlessly and securely using smart contracts, thus enabling a full-stack photo journalism platform.