Also I have stumbled on this talk video from a conference is seems some time ago: https://media.ccc.de/v/35c3-9904-the_social_credit_system https://media.ccc.de

Also I have stumbled on this talk video from a conference is seems some time ago: https://media.ccc.de/v/35c3-9904-the_social_credit_system https://media.ccc.de/v/35c3-9904-the_social_credit_system and speaker also says that there is no one system but rather a large amount of smaller local systems with different sets of rules being trialed in different areas. So it seems more like trial and error and the best picks live on.