What about the tax implications of every transaction being a taxable event?

Are you tracking all of this for tax purposes? These transactions all have to be reported to the IRS even for stable coins. This is the biggest thing making crypto payments a non-starter. What's the story here from the end-user's perspective?

I as an individual have no interest in stacking stable coins if when I spend them to businesses, I have to meticulously track each transaction and report it. Whatever you're doing for businesses doesn't seem like it would solve this problem for individuals, if you're even solving it for businesses themselves that is.