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.
Eminer aims at transforming “hash rate” into a more efficient and circulating digital pass, thus redefining the value of the mining industry, and creating a blockchain hash rate financial service platform integrating hash rate services, financial services, investment services and information services.