I remember that i read about a lawsuite were someone tweeted the hash of a document and proofed that way that this documenta existed at that point. I believe it

I remember that i read about a lawsuite were someone tweeted the hash of a document and proofed that way that this documenta existed at that point. I believe it was about a patent infringment and they even brought a twitter employee in as a witness to testify aboht the imutability of tweeta and the timestamp. Cant find the article (hash is not a good search phrase when it comes to Findung an article about twitter).