Parami protocol is based on the Substrate blockchain development framework and the Polkadot cross-chain technology and IPFS distributed storage technology to build the next-generation digital advertising ecology. Offchain Trusted Computing. The Parami protocol provides DID registration and maintenance services for users on the main chain, allowing them to have their own decentralized identity. Horizontally, through the incentive mechanism built on the blockchain, users with Parami DIDs can spontaneously invite their friends to create their own Parami DID identities and receive pass incentives, thus building their own private domain traffic pools. Vertically, the Personal Crypto Preference bound to Parami DID will be used as an aggregated advertising preference to continuously update users’ marketing preferences on the one hand, and to provide a basis for users to prove that they are the target user (with a high relevance match) by using zero-knowledge proof technology such as Bulletproof to On the other hand, it will provide the basis for users to prove that they are the target users (with high relevance and matching) and get high rewards, thus achieving the real sense of independent control of user data and transaction realization. On the other hand, it also provides DID for marketing enterprises to manage and maintain the whole process of marketing, which not only guarantees the credibility of the marketing process and thus reduces fraud, but also facilitates enterprises to review and trace the whole marketing statement cycle. Blockchain operation contract provides trusted calculation, identity verification and revenue distribution for the whole advertising distribution lifecycle. In the Web 3.0 era, the marketing incentive dimension of advertising will include user attention and user match. Running contracts will be issued by advertisers, and bidding will be done to allocate users’ attention sequentially. In addition, through the verification of zero-knowledge proof of users’ digital advertising preferences, the amount of incentive obtained by users will be determined, and the revenue share will be provided to traffic owners according to the recommendation relationship on the chain, so as to ensure the interests of traffic owners. The off-chain trusted computing will include the work of advertising-related computing and advertising prophecy machine. The advertising prophecy machine feeds data from the traditional Internet to the blockchain to run the contract, which includes the price of the platform pass to influence the amount of pass incentive in the advertising marketing process. It also includes access to data from other private domain traffic sites or applications, such as Twitter, Facebook, etc., for verifying users’ ad engagement.