A smart contract can be defined as a computer program, stored on a blockchain, which allows a transaction or an agreement-defined ex-ante-to be self-executed when some conditions are met, and without the need for a central authority to enforce it. Even if this new technology is very promising,...

Currently, 4.0 technologies have generated important changes in government entities, promoting digital government transformation (DGT). This article addresses the challenge of improving the security, reliability and traceability of communications and certified notifications of state entities,...