2Key network is a blockchain based platform for building referral campaigns. 2Key allows users to create and manage online campaigns that are powered by smart contracts. The Ethereum based 2KEY token is used to activate campaigns and to reward users for their participation.

DATx is cooperating with Avazu to develop a blockchain powered digital advertising platform with cross-chain capabilities. It will have a hybrid model of, centralized and decentralized data storage, that will give users more control of their personal information. DATx will encrypt their details, and use blockchain to improve privacy, transparency, and security for viewers, publishers, and advertisers. DATx will also use transparent machine learning algorithms, decentralized auditing, and incentives based on user attention, to help improve the inefficiencies that currently plague digital advertising.
The network is powered by the DATX token, and is backed by several influential firms, such as Genesis Capital, Qtum, and Game.com.

ClearCoin is developing a smart contract based advertising and media buying platform, built on Ethereum. Powered by the XCLR token, ClearCoin connects advertisers and publishers in a media buying network that uses blockchain to add efficiency and transparency to the media buying process.