Will you create a rating of mining companies based on the data entered in your blockchain?
Why do you think you need this rating? Do you want buyers to choose the most reliable mining company?
I think Karuschain is made for other purposes.
Karuschain makes it possible to check the goods that you already want to buy and should not advise you this or that company
On each precious metal there will be a code by which you can see all the information about the product in the blockchain?