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This is just a concept, and the question is if it makes better offline money then eCash would do !?

I printed a small chip with a NTAG 424 inside.

It functions like a boltcard.

If you need to verify the balance you can do when you know the lightning server URL:

You can withdraw the Sats later !

But normally you would just send the balance if the receiver got a phone.

But you could trade the coins for goods if no one got a phone.

But a lot of trust would be needed.

What du you think ?

Good idea. I would try to make it thin as you could otherwise. Once 'spent' you could recycle the material if done right.

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the chip can also receive

so you can use it multiple times

its like a boltcard