ySign is a new blockchain-based global platform for free communication and discrete conversations with 100% privacy, created as an opportunity to stay anonymous and secure. They have additionally to their whitepaper a technical paper. Their project is based on NEM. However, the tokens are ERC20 tokens. Team looks also solid and is very responsive. In the main sale stage 1 YSN = 0.00084 ETH. The 10 YSN which you receive are currently worth around $5.