Advertisement automatic transaction and delivery method and system based on blockchain intelligent contract

The invention provides an advertisement automatic transaction and delivery method based on a blockchain intelligent contract, and the advertisement automatic transaction and delivery method comprisesthe steps that an advertiser publishes a target advertisement to a blockchain, and generates a target intelligent contract; a traffic owner applies to publish an advertisement based on the advertisement space intelligent contract, and receives an advertisement intelligent contract address set recommended by the intelligent recommendation node based on the block chain; based on the intelligent recommendation node, user behavior data for browsing the target advertisement is automatically obtained, and based on the advertisement transaction verification node, a hash address of the user behavior data and advertisement transaction data of the user are obtained, and are broadcasted to the blockchain; the blockchain performs consensus processing and recording on the advertisement transaction datathrough a pre-established