The generative-music alarm bell rang in 2023, when the deep-faked duet “Heart on My Sleeve”  by “Drake” and “The Weeknd” sped past millions of streams before anyone could trace its source. The stunt made one thing brutally clear: labels could no longer police every upload, much less every model, in real time. Two years on, the industry’s strategy has flipped from whack-a-mole enforcement to supply-chain surveillance. Detection code is now being baked into every layer of the p