Hi all, I&#x27;m the author of this contributed article. TechCrunch wouldn&#x27;t let us discuss our own company in the article, but at Bloc (<a href="https:&#x2F;&#x2F;bloc.io" rel="nofollow">https:&#x2F;&#x2F;bloc.io</a>) we&#x27;ve been working on this category of problems for the last four years. Let me know if you have any questions or comments.