Odaily Planet Daily News According to official news, Deutsche Telekom's subsidiary Telekom MMS, the fifth largest telecom application provider globally, has become a validator for ZetaChain. By utilizing Deutsche Telekom's proprietary infrastructure stack, Open Telekom Cloud (OTC), to enhance the security of the ZetaChain network, Telekom MMS will also provide developers building general applications with access to decentralized and enterprise-level Layer 1 infrastructure.