Revain is a business review and comment platform where the next generation platform based on blockchain technology is based on blockchain technology, companies encourage users to leave their comments to which they are published in the digital book of Revain on the Ethereum blockchain, where the rewards they offer incentivize users to participate and therefore collaborate with the operation of the platform. The platform makes use of an artificial intelligence neural network to determine who earns RVN the ERC-20 cryptocurrency token from Revain's network.