Three signs between the door and the coin
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1 / Check in
Scan the live code on the host's screen, or let the host tap your phone. The code changes every 15 seconds.
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2 / Pool SOL
While the doors are open, every checked-in wallet can put SOL in the spot's pool. Take it back until the last minutes.
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3 / Born
When the doors close the coin is created and bought with the whole pool in one instruction. Everyone who was there holds it at one price.
Presence is a signature, not a GPS dot
Proof
The host's device signed
A check-in lands only with a code the host's registered device signed for this spot in this 15 second window.
Soft signal
GPS is a hint on this page
Your location only draws the dot on the map. Nothing on chain reads it.
Answerable
Hosts put up a bond
A host who signs for people who were not there can lose the bond. An arbiter decides that, and says so on chain.