Wherry
1
Owner
2
Phone
3
Shop
Play
Courier
Online · devnet
✓
Owner
· lock $40
→
✓
Phone
· pay offline
→
3
Shop
· check + collect
Next: Play →
Opening the shop…
Done: you paid with no signal and the shop got its money
Bonus: Play, buy a game power-up offline →
The same offline payments buy an in-game item, with a bonus drop you can prove was fair.