6TiSCH is a standardization effort at the IETF that combines industrial performance with seamless Internet connec-tivity. It brings together a number of existing standards, and adds scheduling capabilities. One of these standards is IEEE802.15.4 Time Slotted Channel Hopping (TSCH), a medium access control layer technique that provides high reliability and ultra low power consumption. Another is RPL, a routing protocol that turns the topology into a multi-hop mesh network. OpenWSN is an open-source implementation of 6TiSCH. It provides a set of developing tools and supports multiple hardware platforms. OpenWSN is the basis of our solution for the EWSN 2019 dependability competition.