I’d like to do some research on this. My goal is to make possible someone using Meshtastic send a signed bitcoin transaction to a bitcoin node. And this BTC node would be connected to a Meshtastic node. In a censorship scenario it would be possible to have multiple of those nodes around and have bitcoin available too much personal risk. I’ve seen a guy sending files on YouTube via Meshtastic, but he didn’t show/share the source code. 

 It looks like this might be an option for sending small files over Meshtastic:
https://github.com/landandair/Meshtastic_File_Transfer 

 Thanks.