Processing logic may monitor testing of a candidate service with one or more services to determine if one or more criteria are satisfied. The one or more criteria may be defined in a smart contract on a blockchain. In response to the one or more criteria being satisfied, processing logic may initiate a transaction of the blockchain which causes each of the one or more services to validate the one or more criteria. In response to the one or more services validating that the one or more criteria are satisfied, processing logic may promote the candidate service.