I think it would depend a lot on who has the power in said product. The business model of the product. If it's tailored towards workers, it could be as simple

I think it would depend a lot on who has the power in said product. The business model of the product. If it's tailored towards workers, it could be as simple as a key that you, the employee, could revoke at any time, making the centralized data void. Something like rainbow.me For the b2b model... well it could be like equifax I guess? Offer to provide that service to the business to check the data, while allowing the user to revoke it at any time, for a small fee paid in the crypto of your choice perhaps paid by the business for accessing the data.