I don’t know enough about ecash still 🙊
Discussion
I think it’s a bearer asset can can be transferred without an internet connection. I saw nostr:npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg share a note of him doing that on the airplane. ✈️
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nostr:note1fld3qp9nn3hatg2l97a0xtv07p0ustfvjucrnsxf7kphkk37fweq5zzv2f