Every fee buys
Bitcoin and gold
Weighted by risk and rebalanced every month. Burn $AURBIT any time and take your share of both.
Today's model: Bitcoin 40% · gold 60%
Built with Charlie Morris, founder of ByteTree
The calmer asset
gets more
Aurbit weights Bitcoin and gold by how much each one swings. Here is the rule run on the last 360 daily closes, up to Nov 12, 2026.
btc weight = (1/0.441) ÷ (1/0.441 + 1/0.292) = 39.87%
Kraken daily closes of BTC/USD and PAXG/USD (one PAXG is one troy ounce of gold), Nov 18, 2025 to Nov 12, 2026. Prices refresh hourly. The weight is clamped between 20% and 80%.
$1,000, three ways
A backtest of the weighting rule on historical prices: Bitcoin only, gold only, and the Aurbit basket, its weights reset every 30 days from the trailing 360 closes.
- Aurbit basket$888
- Bitcoin only$702
- Gold only$928
| End value | Return | Max drawdown | Volatility | |
|---|---|---|---|---|
| Aurbit basket | $888 | −11.2% | −28.8% | 29.0% |
| Bitcoin only | $702 | −29.8% | −42.4% | 44.2% |
| Gold only | $928 | −7.2% | −29.9% | 29.2% |
Backtest of the weighting rule on Kraken daily closes, Nov 12, 2025 to Nov 12, 2026 (365 days). No fees, slippage or burns; volatility is annualised from daily returns. The first reset used the 355 closes available before the start.
When Bitcoin swings,
gold gets more
The 30-day volatility of each asset, and the Bitcoin weight the rule would set on each day from the trailing 360 closes.
- Bitcoin volatility36.7%
- Gold volatility23.7%
- Bitcoin weight40%
Volatility is the standard deviation of the last 30 daily log returns, annualised. The weight is the rule run on the 360 closes up to each day; before Nov 17, 2025 it used the closes available, from 355. Kraken daily closes of BTC/USD and PAXG/USD, Nov 12, 2025 to Nov 12, 2026.
A memecoin with
a balance sheet
Connect to see your share after launch.
How a fee becomes
Bitcoin and gold
- 1
A trade pays a creator fee
Every buy and sell of $AURBIT on pump.fun pays a creator fee in SOL. Fee sharing sends all of it to the program's fee wallet, not to a person.
- 2
The fee wallet books it
The fee wallet is an address of the program. Each fee is split as it lands: 80% for the holders, 20% for the dev.
- 3
The keeper buys what is light
Anyone can call buy; our keeper does it every minute. The SOL goes through Jupiter into whichever asset is under its target, and the program checks the amount received against Pyth's price before it accepts the trade.
- 4
The vault holds it
Bitcoin lands as cbBTC and gold as XAUt0, in two token accounts owned by the treasury.
- 5
Burn to redeem
Burn any amount of $AURBIT and the program pays your share of the cbBTC, the XAUt0 and the SOL not yet spent, straight to your wallet. 10% of the share stays in the vault.
Charlie Morris
Founder of ByteTree, fund manager
Charlie has argued for years that Bitcoin and gold belong in the same portfolio: two scarce assets that rarely fall on the same day. His ETF holds both, weighted by risk so that neither one dominates the swings, and rebalances every month.
Aurbit puts that rule on chain. The fees of a memecoin buy the same two assets by the same method, and anyone holding the coin can burn it for their share of both.
Burn the coin,
keep the gold
Your share is your coins divided by the supply. 10% of every exit stays in the vault.
The coins are burned for good. You are paid cbBTC and XAUt0 into your wallet's token accounts, plus SOL for fees not bought yet. 10% of each leg stays in the treasury.
FAQ
What backs the coin?
Two token accounts owned by the program's treasury: cbBTC, Coinbase's Bitcoin on Solana, and XAUt0, Tether Gold at one token per troy ounce. Plus the SOL from fees that has not been spent yet. All of it is on chain and readable by anyone; the vault card above reads it every 15 seconds once the program is live.
Why Bitcoin and gold?
Both are scarce, both are held as a store of value, and they often move on different days: over the last 360 days the correlation of their daily returns was 0.40. Holding the two together has swung less than Bitcoin alone, as the backtest above shows.
How are the weights set?
Inverse volatility. Once a month the keeper takes the last 360 daily closes of BTC/USD and PAXG/USD from Kraken, measures the standard deviation of each one's daily returns and gives each asset a weight proportional to one over that number. The result is clamped between 20% and 80% and written to the program with the hash of the file holding every input. Today it would be Bitcoin 40%, gold 60%.
How do I redeem?
Connect a wallet on this page, type how many $AURBIT to burn and confirm. The program burns them and pays your share of cbBTC, XAUt0 and unspent SOL into your wallet in the same transaction. Your share is the coins you burn divided by the supply before the burn.
What is the 10% exit?
10% of every redemption stays in the vault. It is not paid to anyone: it raises the backing of every coin still held, so the holders who stay get a little more each time someone leaves.
What is the 20% dev share?
Of each creator fee, 20% is booked for the dev and paid in SOL; it pays for the keeper, the price updates and the site. The other 80% belongs to the holders and is only ever spent on Bitcoin and gold. The dev share never comes out of the vault.
Why are prices checked against Pyth?
Every buy is a swap on Jupiter, and a swap can be routed badly or through a pool someone has pushed. After the swap, the program reads Pyth's SOL, BTC and gold prices and rejects the buy if it received more than 2% less than fair value, or if a price is older than two minutes or too uncertain.
What happens on weekends?
The gold market closes from Friday evening to Sunday evening (New York), and Pyth's gold price pauses with it. Over the weekend the keeper buys only Bitcoin, still inside the target rule, and gold buying resumes when the market reopens. Redeeming works every day.