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Minibits | 8 months ago (raw) | root | parent | reply | flag 
 I think you'd scan / nfc the receiver pubkey in an offline use case (if receiver is unknown to you).
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the axiom | 8 months ago (raw) | root | parent | reply | flag 
 How does doublespend protection work in that case? Doesn't sound doable. You can still reuse the same token to pay multiple people.
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Minibits | 8 months ago (raw) | root | parent | reply | flag 
 As I think of it, you're right - scheman provides ability for the receiver to be offline.

For sender to be offline as well, he would need to prepare the locked token upfront in order to get mint's sig.
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the axiom | 8 months ago (raw) | root | parent | reply | flag 
 OK, that makes sense.

Still an interesting property.

As long as the receiver trusts the same mint.