The effective management of medical records is essential in the ordinary and emergency operations of healthcare providers. This work uses blockchain to develop a smart contract algorithm for users of a medical record platform. This algorithm provides immutable execution and addresses authentication and reliability issues to control access to healthcare platforms. An executable distributed code is used to build the smart contract algorithm. In the proposed algorithm, management operations of the clinical history are carried out and integrated in an automated way in a distributed environment. Solidity is the programming language used to create the algorithm for a private and permissioned architecture with a proposed consensus algorithm requiring significantly less computational power using a 22% faster hash function.

Este artículo identifica y determina los principales elementos requeridos para una arquitectura blockchain donde se mejore la gestión de los registros médicos, y se pueda estructurar un sistema que controle el acceso a los datos clínicos. Se proponen cuatros pasos principales organizados como un RoadMap. La investigación, para llegar a estos resultados, se logró siguiendo una metodología mixta con una búsqueda estructurada de literatura. Los hallazgos indican que esta tecnología es adecuada para los requisitos operativos de un hospital, convirtiéndola en una red de datos orientada al servicio y preservando la seguridad y privacidad de los datos del paciente, pudiéndose aplicar en otros sectores específicos como actividades educativas, registros estudiantiles, etc This article identifies and determines the main elements required for a blockchain architecture where the management of medical records is improved, and a system that controls access to clinical data can be structured. Four main steps are proposed, organized as a RoadMap. The research, to reach these results, was achieved following a mixed methodology with a structured literature search. The findings indicate that this technology is suitable for the operational requirements of a hospital, turning it into a service-oriented data network and preserving the security and privacy of patient data, and can be applied in other specific sectors such as educational activities, student records, etc