Asset Registry

This page is the per-asset record behind every listed pool leg: the deployed token address, its decimals, the NXR feed the mark is signed under, and the ERC-20 quirks an integrator has to handle. Assets are grouped by the core they sit in: a core holds legs alike enough to share a curve and correlated enough that their inventory nets against each other rather than accumulating on one side (Pool Composition). The faucet twins that exist only to mint the hub asset are listed separately. Open it when you need to know what a symbol on the app actually is, or which feed id a given mark is bound to.

ChainchainIdRegistry status
Arc Testnet5042002Live. Rosters, feed ids and decimals below track its deployment manifests

Rosters are per chain; MITCH feed ids are not (§1). Deployed addresses per chain: see §7.

1. Feed routes

  • NXR feed <SYM>-USDC · MITCH <u64>: the MITCH instrument id NX Rates signs the feed under. That id is the record key on the signed push path - it is what the signature binds, identical on every chain. NXR aggregates the source venues and signs the resulting mark itself (Oracle Price-Push Security).
  • CEX-agg <sym>: NXR multi-exchange aggregate on the named symbol vs USDC.

Feed names are not denominations: USDS and PYUSD sign USDT-basis instruments, and the fiat and equity legs sign X-USD, so those marks carry a small USD/USDC basis that scales one-for-one with a USDC depeg.

2. Stable core (5)

AssetAddressDecNXR feedNotes
USDC0x36000000000000000000000000000000000000006USDC-USD · MITCH 452687840255410176Official Circle testnet token on Arc; base of every pool
USDT0x878e27566Ab9E32534e306C26388dFcE82D0AB466USDT-USDC · MITCH 451698500104617984No bool returns; approve-race guard (approve to 0 first)
USDS0x66dbe40c8dc03f2C9e7A187F253e8889A03640c818USDS-USDC · MITCH 448399965221289984
USD10x0326748d09eD77D8C15fbf04d6277aE4CAF033f318USD1-USDC · MITCH 442022797780189184
PYUSD0xeE12a7072779a4ab85f2DD2a1E163DbF164291f96PYUSD-USDC · MITCH 445981039640182784

3. Crypto core (7)

Volatile legs of the crypto pool; USDC and USDT above serve as its stable legs.

AssetAddressDecNXR feedNotes
WETH0x89A9cD1dd6DE3ab7152EF9c7C5496c2946334D0D18WETH-USDC · MITCH 438724262896861184CEX-agg ETH
WBTC0xF36eEe851bf3e76E464609a717bAE4a239A8cC7b8WBTC-USDC · MITCH 453457718709059584CEX-agg BTC
CBBTC0xbAA18E707E7b7fE9d1c0e4CeA61603035cb30C558CBBTC-USDC · MITCH 436635190804086784Own feed id, same BTC mark as WBTC
BNB0x49C710167A4b486F20f9437485D865D65380631018BNB-USDC · MITCH 434436167548534784CEX-agg BNB; pre-standard ERC-20 (2017), throws instead of returning false; mainnet addr metadata only
XAUT0x432A3248e91d8B6fd41A487dE8886E0B44Fb7a6D6XAUT-USDC · MITCH 454557230336835584CEX-agg XAUT
PAXG0x96f953bAC2FF3829B4a526cacd858A5a22327E0318PAXG-USDC · MITCH 454447279174057984
EURC0x89B50855Aa3bE2F677cD6303Cec089B5F319D72a6EURC-USDC · MITCH 439219043129360384Official Circle testnet token on Arc; an FX cross, not a metal/crypto commodity; sits in both the crypto and FX cores

4. FX core (4 fiat legs; USDC and EURC above are its other two members)

Non-USD fiat stablecoins. Each marks against its own currency, not a $1 peg, and each carries an independent breaker feed on refOracle. All are 18-decimal mocks with no mainnet counterpart.

AssetAddressCurrencyDecNXR feedNotes
QCAD0x626eb915d4a4136F7c00352A54378d3A322488daCAD18QCAD-USDC · MITCH 456096546615721984Ref-oracle bound
AUDF0x35c625c07ed4a9123ab863f6e8722c9210c808A3AUD18AUDF-USDC · MITCH 456206497778499584Ref-oracle bound
JPYC0xA1fe5aDcB5f5DD1c21d372D18E7dF7fa5bfbc09eJPY18JPYC-USDC · MITCH 456426400104054784Ref-oracle bound
KRW10xee7D69C52c2F183A0389374E82ca841c5a463573KRW18KRW1-USDC · MITCH 456536351266832384Ref-oracle bound

JPYC and KRW1 mark far from parity, which is why the FX pool sizes every leg from the real ceremony mark rather than defaulting to a peg.

5. Equities (10 listed legs)

Tokenised stock mocks, no mainnet counterpart. Listed on the stocks-pool roster, bound on the oracle, and funded (Pool Composition).

AssetAddressDecNXR feedNotes
INTC0xd7A6216738Eba05C0ee47ff478e307bE5A94Dc9518INTC-USDC · MITCH 7687117506347008
AMD0x3e04aa20170944d29681a475Bb3dd0a1Bb421cCb18AMD-USDC · MITCH 166457972359168
NVDA0xA4816856b8144ad1bb5a555A9Afa8B0f4B9FC8D018NVDA-USDC · MITCH 11205554715230208
ASML0x56520a1D0F047e748AA042975D95B6B3CD203a4d18ASML-USDC · MITCH 1134028204802048
SPCX0xf782226BB4B4C6F57F24D17a34c5C041482b4bE218SPCX-USDC · MITCH 14102767854419968
AVGO0x0458D9Fc5bd31b5Af3018Be9CfE91ecF4ABf9a7e18AVGO-USDC · MITCH 1947666809356288
TSLA0xBA76ce34AC2c65813ee2c11F34Ad1523fE43CBac18TSLA-USDC · MITCH 15075835645001728
MSFT0x83E43A65ce9E5aE1872a2363eD74D67C5A30fdb518MSFT-USDC · MITCH 10007087040954368
ORCL0x56F81D0831b9352e023266b72F38b4657baA32E818ORCL-USDC · MITCH 11425457040785408
META0x2767f2e94a7cF7935d59DdD7A5A30138369846e218META-USDC · MITCH 9930121227010048

The ten names were picked by measured tick activity on the venue feed, not by general popularity. Re-measure before changing the roster.

6. Faucet twins

Two extra mocks exist so the faucet can mint the hub asset: USDC.b (listed on all four pools) and EURC.b (FX and crypto pools). Both are 18-decimal mocks; the official Circle tokens behind them are 6-decimal and not faucet-mintable. The .b suffix appears in the ERC-20 name and symbol only - display metadata, not a different asset.

They own no feed, by design: a feed nothing pushes fails closed at ttl. Instead each rides a feed the keeper already services - USDC.b off USDT-USDC, EURC.b off EURC-USDC - so USDC.b carries a small permanent basis against native USDC (~7 bp measured 2026-08-20). That is a shared-feed artifact, not a depeg. Authoritative membership is the per-pool receipt records in the deployment manifests.

7. See also