You are standing in the marsh where the record begins. Every wisp on this water is a real theft, sized by what was taken. Drift close. Click a wisp and it blooms.
Dark Marsh is one of three properties in a single ecosystem, and this page says so plainly. All three doors stand on the same graded dataset of crypto theft incidents, rooted here in the Marsh. This is the source door, where the scale of the record is something you feel standing in the water. The other two doors present the same record in different ways.