INSTANCE is a dataset of seismic waveforms and metadata suitable for machine learning analysis. It Includes:

A total of 1,159,249 3-channel waveforms from 54,008 earthquakes; 115 precomputed observable characteristics describe station, trace, source, path, and quality; 19 networks; 620 seismic stations.

Michelini, A., Cianetti, S., Gaviano, S., Giunchi, C., Jozinović, D., and Lauciani, V., INSTANCE – the Italian seismic dataset for machine learning, Earth Syst. Sci. Data, 13 (12), 5509 – 5544, doi:10.5194/essd-13-5509-2021
Credit for funding: Matteo Niccoli SWUNG slack channel

Link to the dataset:
Link to the LinkedIn post