GCX (Global Copyright Exchange) is a dataset licensing service for AI‑driven music, offering ethically sourced and copyright‑cleared premium datasets ideal for tasks like music generation, source separation, music recommendation, and MIR. Launched by Rightsify in 2023, it provides over 4.4 million hours of audio and 32 billion metadata-text pairs, totaling more than 3 petabytes, comprising MIDI, stems, and WAV files with rich descriptive metadata (key, tempo, instrumentation, chord progressions, etc.). Datasets can be licensed “as is” or customized by genre, culture, instruments, and more, with full commercial indemnification. GCX bridges creators, rights holders, and AI developers by streamlining licensing and ensuring legal compliance. ...