Manifests only at precise meridian moments—when sun reaches peak alignment over the continental divide—as twin beams of light (alpenglow gold from Court peaks, frontier copper from Aerie valleys) that intersect and crystallize into binding seal patterns. These seals appear as double-helix scale formations that merge Court formality (geometric precision) with Aerie fluidity (organic curves), visible only to those who have earned recognition from both traditions. The oath-marks glow faintly during subsequent trials, growing brighter with each worthy achievement until they become permanent at season's culmination.

Acts as the living contract between ancient mountain powers and worthy challengers, binding both parties to honor what was earned across all sixteen trials—the mountains must remember, and the recognized must continue proving their worthiness, creating an eternal cycle of obligation that transcends any single season and prevents either Court or Aerie tradition from revoking recognition once the meridian seal is placed.