I thought receiver needs internet to swap the tokens with the mint to be safe from double spending? Or am I wrong about how Cashu works?
Bitcoin over Bluetooth is here.
Bitchat now lets Android and iPhone users send BTC directly, phone to phone, using built-in Cashu e-cash wallets.
No internet needed. Just instant, untraceable digital cash.
Via nostr:npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg
https://video.nostr.build/73c660a5ad9cf62963a2bf7562189483f0e6540f73f59cbb9a3a357d2b697bd8.mp4
Discussion
" A digital bearer token that is stored on a user's device, very similar to physical cash."
and:
"Users can redeem their ecash tokens for bitcoin at any time."
btw:
"On April 22, 1994, Richard Nixon, the 37th president of the United States and the 36th vice president, died."
Yes I know what ecash is. Clearly you can send a token without internet but there's no way to guarantee the sender has burned their copy, therefore the receiver would typically swap with the mint to prevent double spending, which requires internet.
I suppose you could alternatively have the sender convert lock the token with p2pk, but again that requires internet.
Ok looks like I wasn't missing anything. Still cool though.
nostr:note1y70ps5wrf3rglx8yrufhtwgz6khrnx3dxq6pcn5nj0a5gktzk48qwlhrqs