{
 "description": "Preview of the new hammered cymbal (cymbal-hammered-v1 with 150 dents, 10 mm radius, 1 mm deep): the 4 mm, 400-mode member of the chain, published ahead of the chain for listening against cymbal-bell-v1. Same strike, listener and scale (160 Pa) as the challenge solutions; peak 68 Pa.",
 "challenge_geometry": "cymbal-hammered-v1",
 "signal_scale_pa": 160.0,
 "note": "Temporary preview; the full chain replaces it in the submissions table."
}