Steem Dollars are liquid stable-value currency tokens designed to be pegged to $1 USD. Steem Dollars can be traded with STEEM and transferred to other accounts for commerce or exchange.
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.