Prometheus

While online dating sites constructed databases of compatible personality traits, Prometheus Industries collected data on organ compatibility for transplant purposes.
Every mail-in paternity check, medical biopsy, and blood test brought in more data.
Prometheus ingested every result and wove a complex web of names and organs.
At first, Prometheus offered up its data on voluntary donors to eliminate transplant rejections.
But after they demonstrated how successful their algorithms were, they quietly opened up the secret market to allow the wealthy and desperate to view donor resources not yet available.
Prometheus just offered the data. The illegal procurement agents operated independently.