The box says 96 kHz.
Recording sound means taking snapshots of it: 96,000 every second here. Two snapshots catch one cycle of a sound wave, so the highest pitch the disc can hold is half that: 48 kHz. The canvas below is that promise.
A real disc fills it.
The app reads the disc and draws every frequency it finds. A true 96 kHz master reaches the roof.
This one goes silent at 24.8.
The energy stops dead. Everything above the line is empty. More than half of what the box promised, never delivered.
Bigger file. Zero new detail.
Someone stretched a CD-sized master into a hi-res container. A CD tops out at 22.05 kHz. This disc goes quiet a touch above it, where CD-grade material lands. Enlarge its spectrogram: bigger blocks, nothing new.
The silence is the fingerprint.
Side by side, there’s no mistaking it. 19 of 103 discs measured so far carry this fingerprint. Every one is named below.