WISeKey International's subsidiary, SEALCOIN, has secured a $4 million strategic investment to advance blockchain infrastructure for the space economy. The investment, involving The Hashgraph Group and WISeKey, aims to integrate SEALCOIN into the burgeoning space economy ecosystem. The funds will support the development of blockchain solutions using decentralized physical internet (DePIN) technology, enhancing connectivity and data management in space-related industries.