USD reference rate

How this number is built

Derived from public marketplace listings, filtered to offers a normal buyer could actually transact against, then depth-weighted rather than taken from the cheapest sticker.

• Offers with a minimum purchase above 1B are thrown out. The cheapest sticker price on any given day almost always has a 3.5B–100B minimum attached — you cannot buy at that price at all without handing over a large sum up front, usually to an account with single-digit feedback. Requiring a big payment before the buyer has anything to go on is a well-worn set-up for a scam, so those listings are excluded outright rather than treated as the going rate.
• Sellers with at least 50 ratings and a 98% score.
• Priced as the blended cost of buying 10B straight down the book, not the cheapest listing. The cheapest qualifying seller often holds under 0.5B, so their price is real but untradeable at size.
• If the filtered book can't fill 10B, nothing is recorded for that poll. A gap is honest; a point derived from scraps would be indistinguishable from a real move later.

The methodology is fixed — changing it would make points before and after incomparable — but every raw poll is archived, so a different method can be back-computed over real history.