The blockchain is a decentralized and distributed database that guarantees the integrity of data and transactions. Thanks to the blockchain, advertisers and their campaigns are not connected to each other. Thus, they are not all affected by hacking or malfunctioning. Thanks to the Smart Contract SaTT, ads and transactions are governed by modules of autonomous beings secured by the Ethereum blockchain. In the event of a malfunction of a module or Oracle, the integrity of other advertisers’ ads is preserved. The transaction cost is divided between encryption and Oracle modules according to the needs of use. There is no minimum monthly billing. The competition between Oracle modules guarantees a high level of service and competitive rates. By using SaTTs, payments are immediate as soon as the success criteria are met. Payments are not subject to transfer fees or currency conversion fees.