CROM is the first real-world application of blockchain technology for the performance advertising industry. CROM grants access to a complete new set of methods that will fundamentally change the way settlements are processed in the digital advertising value chain. Now that blockchain technology has reached a more mature state, CROM takes advantage of the solutions available and combines smart contracts with cryptocurrency based payment. CROM is tailored to the digital performance advertisement industry and solves problems that all current implementations cannot cope with.