xaut.cool

Methodology

xaut.cool tracks the total supply of Tether Gold (XAUT) using only on-chain data. We query smart contracts directly — no APIs, no third-party aggregators, no off-chain data.

What we track

XAUT exists in two forms: native XAUT issued directly by Tether on Ethereum and BNB Chain, and XAUT0 bridged to other chains via LayerZero's OFT (Omnichain Fungible Token) standard.

Supply calculation

Native chains

NativeSupply = totalSupply() − sum(treasury balanceOf())

We call totalSupply() on the XAUT token contract, then subtract the balance held by known Tether treasury addresses. Treasury balances represent pre-minted tokens that have not yet entered circulation.

Bridged chains (XAUT0)

BridgedSupply = OFT totalSupply()

On each destination chain, we call totalSupply() on the XAUT0 OFT contract. This represents XAUT that has been bridged from a native chain.

Total supply

Total = sum(NativeSupply) across native chains only

Bridged supply is not added to the total because it is backed 1:1 by native XAUT locked in the LayerZero OAdapter contract on Ethereum. Counting both would double-count.

Treasury addresses

We subtract the following known Tether addresses from the total supply:

  • 0x5754284f345afc66a98fbb0a0afe71e0f007b949 — Tether Treasury (Ethereum)

Bridge accounting

The XAUT0 bridge uses LayerZero's OFT standard. Native XAUT is locked in the OAdapterUpgradeable contract on Ethereum (0xb9c2321BB7D0Db468f570D10A424d1Cc8EFd696C), and an equivalent amount of XAUT0 is minted on the destination chain. When redeemed, XAUT0 is burned and native XAUT is unlocked.

Units

1 XAUT = 1 troy ounce of gold. We support four display units:

  • Troy ounces (oz) — the native unit of XAUT
  • Grams (g) — 1 oz = 31.1035 g
  • Scudo — Tether's fractional unit, 1 oz = 1,000 scudo
  • USD — calculated using the live gold price

Data freshness

Supply data is polled from all chains every 5 minutes. Historical snapshots are stored for chart visualization. The gold price is fetched from CoinGecko with a Chainlink oracle fallback.

Disclaimer

xaut.cool is an independent, third-party tracker. We are not affiliated with Tether, Tether Gold, or any token issuer. Data is provided as-is from on-chain sources. For official transparency data, visit gold.tether.to.