How it will be possible to verify documents automatically? By image reorganization? I do not think we are living in 2030 or 2050 for effective results.
The main purpose of these services is to check the pictures and data related to customers and make sure that their names are not listed in the blacklists of the Interpol, OFAC, and PEP.
Where the number is limited "often less than 1000" it is better to hire people to do that, there are some experiments to do it automatically "Signature Campaigns" but I do not think it succeeded.
If you are not planning to pay using BTC or top 10 altcoins, I do not think you will find any interest.