Bitcoin's volatility makes pricing hard
Imagine pricing a cup of coffee at 0.000004 BTC on Monday. By Friday, that same amount might be worth half as much , or double. Businesses cannot plan around this, and most people won't quote prices in a unit that can swing 10% in a day.
This is not a flaw in Bitcoin. Volatility is what you see when a fixed-supply asset is being price-discovered across the entire world over decades. But it is a real friction for anyone who wants to use Bitcoin as money right now.
Meet ₿C , Bitcoin Currency
₿C is a unit of account derived entirely from Bitcoin's own price history. It is computed as the cumulative average of every daily Bitcoin price going back to the genesis block in 2009. No institution controls it. No one can change it. It is simply mathematics applied to the public record.
₿C is Bitcoin in dollar terms.
Today, one ₿C is worth roughly $18,700 USD , about one-fifth of Bitcoin's current spot price. That gap will close slowly, over years and decades, as today's high prices are absorbed into the long-run average.
Because it averages across 6,000+ days of history, ₿C barely flinches when Bitcoin has a good or bad week. A 40% crash in Bitcoin spot moves ₿C by less than one-twentieth of one percent on that day. Over the long run, as Bitcoin's price climbs, ₿C climbs too , gradually and predictably.
₿C is not a stablecoin. It does not peg to a dollar or any government currency. It is a unit of account , derived from Bitcoin's entire USD price history , that appreciates steadily with Bitcoin's long-run trajectory while absorbing short-term volatility entirely.
Price it, save it, spend it, invest it
Every monetary system needs three things: a unit of account, a store of value, and a medium of exchange. ₿C makes all three possible on Bitcoin. And for institutional capital markets , pension funds, sovereign wealth managers, corporate treasuries , there is a fourth instrument designed for the way they already operate.
The ₿ond and ₿ILL share the same foundation , ₿C denomination, Bitcoin reserve backing, and dual-condition maturity , but serve different audiences. The ₿ond is non-tradable by design, optimized for retail savers who never want to see a mark-to-market loss. ₿ILL is tradable on secondary markets, issued in fungible tranches, and structured for institutional portfolio integration. Think of it like I-Bonds vs. TIPS: same thesis, different wrapper.
An open foundation
The BTCADP price standard and the ₿C protocol are published as public domain under CC BY-NC-ND. Anyone can implement them, build on them, or critique them with proper attribution.
The instruments described here are proposals, not products. They exist to demonstrate that a stable, common unit of account between fiat and Bitcoin unlocks things that were not previously possible , and that every instrument built on it mechanically strengthens Bitcoin itself.
Ready to go deeper? The rest of the site covers the technical specification, the full ₿C paper, case studies, and the research behind each instrument.