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.

RefToken is developing a decentralized affiliate program that will connect DApp developers with marketers that will distribute their DApps to users. Their smart contract enabled network will be powered by the Ethereum-based REF token, which will be bought by merchants and held in escrow by RefToken. Marketers will then be paid for each conversion that they deliver, according to the terms of the predetermined smart contract. The network will implement a review and rating system.