That’s the type of thing I’m thinking of. What about when the receiver is the one offline, though?

Undisciplined

Can bitcoin ever take a functional physical form? That's a question I don't know the answer to.

You can pay offline with ecash. But the receiver has to be online to verify the ecash note wasn't spend already.

But you could argue that's not bitcoin, only a bitcoin IOU.

bitcoin

On A Bitcoin Standard - Your Phone Dies - How Do You Pay?

SatsMate

> Can bitcoin ever take a functional physical form? That's a question I don't know the answer to.

You can pay offline with ecash. But the receiver has to be online to verify the ecash note wasn't spend already.

But you could argue that's not bitcoin, only a bitcoin IOU.