  Artificial intelligence shows promise for solving many practical societal
problems in areas such as healthcare and transportation. However, the current
mechanisms for AI model diffusion such as Github code repositories, academic
project webpages, and commercial AI marketplaces have some limitations; for
example, a lack of monetization methods, model traceability, and model
auditabilty. In this work, we sketch guidelines for a new AI diffusion method
based on a decentralized online marketplace. We consider the technical,
economic, and regulatory aspects of such a marketplace including a discussion
of solutions for problems in these areas. Finally, we include a comparative
analysis of several current AI marketplaces that are already available or in
development. We find that most of these marketplaces are centralized commercial
marketplaces with relatively few models.
