In practice, you'll have created a billion-dollar SaaS corporation and helped write legislation. The fundamental issue is that data quality and handling practices mean this information will always be "truthy". At a base level your input comes from an office clerk who's medium-engaged in the process and who's asked for quantity over quality.

The entire financial network (imho, from my perspective, etc etc) is "best effort" and mutual agreements. Nobody involved wants to cast a string to a legal agreement.