An Infrastructure for Service Accountability based on Digital Identity and Blockchain 3.0

Nowadays, achieving strong accountability for two or more parties that interact each other within heterogeneous and distributed business processes using a trustable and decentralised approach has become a very important issue. In this paper a solution is proposed that consists of an IT infrastructure which uses blockchain and digital identity technologies as the building blocks. In particular, the notion of accountability node, a special case of blockchain 3.0 masternode, is identified as the key element of the devised infrastructure which acts as the main interface to cooperating services and relieves the users from the burden of having to directly interact with the blockchain.