Sentinel's @cosmos based sovereign blockchain is now processing IBC transfers as well as 'status updates' from @WireGuardVPN based $dVPN nodes hosted on Sentinel.
Nodes hosted on Sentinel communicate with its blockchain periodically to indicate their status and other properties.
Simply put, $dVPN applications built on Sentinel will only go down if Sentinel's chain goes down.
The user's application will query the blockchain in order to populate the list of available nodes and various other data about the node.
View transactions:
mintscan.io/sentinel/txs