Discogs provides a general API for collecting artist information, which could be good as a way of genuinely collecting artist images.
Needs further investigation - ~so far my quick tests have given me blank artist image URLs. Perhaps they have taken the Last.fm approach of rejecting providing resources.~ This appears to be my inproper testing, FAQ specifies that image URLs are signed.
Discogs provides a general API for collecting artist information, which could be good as a way of genuinely collecting artist images.
Needs further investigation - ~so far my quick tests have given me blank artist image URLs. Perhaps they have taken the Last.fm approach of rejecting providing resources.~ This appears to be my inproper testing, FAQ specifies that image URLs are signed.