Abstract: An example operation may include one or more of changing a status of a current blockchain to a closed and retired status based on expiration of a limited time window, creating a genesis block associated with a new blockchain, storing a world state of the current blockchain in the genesis block, creating one or more smart contracts, storing the one or more smart contracts on the new blockchain, and initiating an open stage on the new blockchain, and the open stage permits one or more potential blockchain transactions to be written to the new blockchain.

Abstract: Tube securing devices and method of using them are disclosed for immobilizing an endotracheal tube or the like in a body cavity such as in an intubated position. The device includes an elongated tube grasping arrangement having a ribbon securing device for helping to maintain the position of the tube grasping device in place. The tube grasping device includes a gripping portion disposed between its opposite ends to help limit sliding movement relative to the tube grasping assembly.