Hartmann IT Solutions GmbH, operating under the brand Chain49 and accessible via their website https://chain49.com, is a company specializing in IT solutions focused on blockchain technology. They offer consulting and development services aimed at helping businesses integrate blockchain into their operations. The company provides expertise in creating customized blockchain systems, developing smart contracts, and offering solutions that promote transparency, security, and efficiency in digital transactions. Chain49 addresses the needs of industries looking to leverage blockchain technology to improve their digital infrastructure.