Guardtime is a technology company specializing in providing blockchain-based solutions for data integrity and security. Founded in 2007, Guardtime has developed KSI (Keyless Signature Infrastructure), a technology that ensures the integrity of data by creating verifiable digital signatures that are resistant to tampering and fraud. The company's solutions cater to a range of industries, including telecommunications, defense, healthcare, and government sectors, helping organizations protect their digital assets and maintain trust in their information systems.