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.
COVA is a new paradigm for data to be used as capital. Data is quickly becoming the most important asset in the world, yet currently there is no infrastructure to control how it is used. COVA provides a unique solution to this dilemma and allows data owners to take advantage of the commodification of data