Rui Zhang, Yafeng Lu, Katherine Adams, orge A. Sefair Haley Mellin, Miguel A. Acevedo, Ross Maciejewski
>It offers information on 497,796 exhibitions in 16,002 galleries, 289,677 exhibitions in 7568 museums, and 127,208 auctions in 1239 auction houses, spanning 143 countries and 36 years (1980 to 2016, fig. S1), allowing us to reconstruct the artistic career of 496,354 artists
Scarce Objects 
, Nick Szabo 2004
Lachlan Kermode