Legal structure to have a verifiable track record

I've been trading for about 4 years and as I've become more successful one of my regrets is that I have no official track record to show. I'm wondering what people would think would be the most cost effective and simple structure to have that could in theory be audited and become GIPS compliant at a later date. An S corp wherein you are the only partner and all the tax implications of your trading flow back to you the same as if you were trading a personal brokerage account? The plan is to use this vehicle as a replacement for a taxable brokerage trading account, with the upside that at some point I could actually be like "here is my audited 20 year trading track record." Thoughts?