Why I'm building this

I'm Joe. I build audit, compliance, and attribution systems professionally: the kind of software where a number that cannot show its work is a liability, and where "trust me" is not an acceptable answer to "where did this figure come from."

I also know what a five-figure skin inventory feels like from the inside, because several people close to me hold one, and I watched October 2025 happen to them. Paper value halved in hours. The group chats went from screenshots of gains to one question asked twelve different ways: what is this actually worth now? Nobody had an answer, because every tool they used was built to display prices, not to keep books.

That bothered me more than it probably should have. Skins are a real asset class now: a seven billion dollar economy, real money in, real money out, real tax consequences, and the record-keeping standards of a hobby forum. The exact discipline I apply at work, lot-level records, source-attributed valuations, reconciliation that ties out, simply does not exist for it.

So fy_nance is not a startup pivot or a trend chase. It is the same muscle I already use every day, pointed at an asset class I care about, for people I know by name. The brokerage statement and the tax software for skins. Honest numbers, shown with their work, every time.

The name, if you are wondering: CS maps carry the de_ prefix, and a carat is the unit you weigh precious things in. Your inventory qualifies. It deserves to be weighed properly.

The research that shaped the product is public on the research page. If you want to reach me directly, write to joe@fy-nance.com. I read replies myself.