Rest assured, in the event of an apocalypse or massive internet shutdown, bitcoin will survive using offline technologies, a CoinDesk researcher told CNBC on Friday.

"We're fine," said Nolan Bauerle, director of research at CoinDesk, a digital media company aimed at the digital asset and blockchain community. Bitcoin transactions are "being broadcast on shortwave radio," he said. "They've [also] launched satellites into space. You can survive an apocalypse."

Coindesk reported as early as 2014 about a test project in Finland to transmit bitcoin payments over the airwaves. There are also services like Blockstream Satellite, which describes itself as a broadcaster of the bitcoin blockchain from space, so people without internet or during a disruption can gain access.

But the idea of truly being able to sustain the transmission of bitcoin transactions if the internet were knocked offline has been hotly debated in bitcoin forums.

Whether online or not, Bauerle advises bitcoin owners to store their digital assets on a hard drive rather than in the cloud. "Custody is part of the problem here," he said.