Chromaway is a Swedish tech company that specializes in providing solutions for secure and private data sharing and management. They use a number of different technologies to help fulfil their clients' needs, including blockchain, distributed ledgers, and smart contracts.

Chromaway uses blockchain to create tamper-proof records of transactions and other data, which helps to ensure the integrity and security of the information being shared and stored.

Another technology that Chromaway uses is distributed ledgers. this enables multiple organizations or individuals to share access to and control the same data, which can help to improve trust and collaboration among different stakeholders.

Smart contracts are also a key technology used by Chromaway. Smart contracts help to automate and streamline complex business processes, and they can be used to enforce the terms of a contract and to ensure that the contract is executed in a timely and efficient manner.