Replying to Avatar calle

if you're the merchant and have Internet, you don't need to trust anyone. the payer can remain offline.

generally, one party having internet is enough to prevent double spending
Avatar
ODELL 6mo ago 💬 5

also this is a surprisingly common situation throughout the world

merchant has internet, customer does not

Reply to this note

Please Login to reply.

Discussion

Avatar
calle 6mo ago

yes, merchant usually doesn't move, customer does!

Avatar
gandlaf21 6mo ago 💬 2

what about the traveling salesman 👳

Avatar
rfc 6mo ago

His customers are hopefully in there own homes and offices 😂

There isn't a way for an offline sender to lock ecash to an offline receivers public key, right? (assuming sender has the exact tokens denominations needed)

Avatar
gandlaf21 6mo ago

one of them has to be online

Avatar
gandlaf21 6mo ago

the opposite could also exist, tho probably less common:

vending machine (offline) - customer mobile (online)

in that case, customer/sender can create offline verifiable tokens

Avatar
ynniv 6mo ago

This was a specific design goal for my Bitcoin Deposits proposal. Always-online vault pays an invoice based on onion message for the invoice and max fee signed by the deposit private key. Potentially a single NFC tap by an offline customer

Avatar
rfc 6mo ago

This is going to take off unbelievably in Africa, we haven't seen anything yet.