Living in the Bitcoin land, you never know what you might come across next. It could be as benign as someone issuing a currency backed by pre-1965 silver US dimes, as geeky as someone creating a blockchain to mine for prime numbers, or it could be as convoluted as BitShares with the many iterations it had over the years (as someone put it - "BitSharesX - An Alt Coin That Is Impossible To Understand"). Over the last few months, I've been seeing a lot of spam about Tau-Chain, along with its many extravagant claims, and figured it might be interesting to try to understand it.
http://bravenewcoin.com/news/tau-chain-a-programmers-perspective/
