They stated their intent was "to see how your algorithms made decisions" that sounds like its your secret sauce. They didn't ask for escrow of source code shou

They stated their intent was "to see how your algorithms made decisions" that sounds like its your secret sauce. They didn't ask for escrow of source code should you go bankrupt. Have your people interacting with them be confident enough to tactfully state they will walk away from the PoC if that is a condition. Coca-cola hasn't revealed theirs, why should you? Ask more questions about if they are seeing things in the analytics results that don't look correct... that might be their concern if they are basing business decisions on your software.