Stealthcoin (XST) has been rebranded to Stealth (XST): https://twitter.com/stealthsend/status/993226001101545473 Stealthcoin provides a complete anonymity solution for cryptocurrencies. Stealthcoin has a fair distribution with nearly four hours of low block rewards, a small premine of 1%, and the long-term energy efficiency of proof-of-stake minting.
Prochain next-gen decentralized digital advertising ecosystem. Prochain is to build a transparent digital advertising data ecosystem by connecting advertisers, media and developers, improving the efficiency of advertising business, reducing the advertising traffic fraud, to intermediaries, and using big data to reap the maximum benefits.