Does #Bitcoin support offline transactions in any form? By that I mean let’s say I put 5 Bitcoins in my wallet on a phone . What’ are the tech barriers and concerns that stop me doing phone:phone transactions let’s say via Bluetooth offline and just syncing with the network when I have connectivity again? Isn’t this something we need to be more resilient?
Discussion
Are you referring to Simple Payment Verification? It is referred to in the original white paper but I’m not aware of any implementations.
https://thebitcoinmanual.com/articles/btc-simple-payment-verification/
Bitcoin SV has been promoting the concept of SPV and has a LiteClient toolbox available.