Youd need to keep track of the items value at the time you sold them and declare that.
Much the same as you would any other transaction as a company.
Possibly capital gains tax on the rise in value of btc when you come to sell them. Or correspondingly a loss.
But if the business pays all appropriate taxes, and I only bring in my 1%, do I still need to pay taxes on all the money that's passed through my hands? or do I just tabulate my total gain over the course of the year and pay on that amount?