dYdX Chain token holders are voting on a protocol upgrade that would reroute the chain’s dollar collateral rails to Circle-issued USDC on Injective. The proposal, numbered 400 and labeled “dYdX Chain Software Upgrade v9.9,” opened for voting on November 13 and is scheduled to close on November 16. If approved, the upgrade is expected near November 17 or 18 at block height 114,220,000.

The change forms part of a broader effort to establish Injective USDC as the canonical representation of the stablecoin across the Cosmos ecosystem. More than $80 million in USDC remains on the Noble network that Circle is retiring. A bank query of dYdX Chain’s existing USDC denom showed approximately 67.89 million units, or about $68 million, that would be the first large balance shifted under the new module.

What the Upgrade Changes

Release v9.9.0 introduces an x/canonicalusdc module. User balances, open positions, trading, subaccounts, and fees continue to use the same USDC denom. The module records whether each unit is backed by Noble USDC or by Injective USDC identified as erc20:0xa00C59fF5a080D2b954d0c75e46E22a0c371235a.

Once migration mode activates, new deposits are accepted only through Injective. Deposits originating on Noble, including those routed via CCTP or Noble auto-forwarding addresses, are rejected and refunded on Noble. Withdrawals may still exit as either Noble or Injective USDC while residual Noble backing is cleared. Governance retains the ability to disable Noble withdrawals after that residual reaches zero. If the on-chain float is ever not fully backed by Canonical USDC, deposits and withdrawals pause automatically while trading continues.

Circle’s Noble Wind-Down Timeline

Circle stopped new Mint issuance to Noble on October 13, 2026. CCTP burn limits began tightening later in October. Full termination of Circle Mint and CCTP access for Noble is targeted for January 12–13, 2027, following a snapshot of remaining balances. The dYdX upgrade is intended to complete the collateral-rail transition before that deadline.

Native USDC and CCTP support on Injective became available earlier in 2026. Circle’s regulated affiliates issue the token for MultiVM use. Skip:Go has offered a guided migration path from Noble USDC (USDC.n) to Injective USDC (USDC.inj) since mid-September, typically requiring two signatures.

Ecosystem Progress Beyond dYdX

Cosmos Hub has already completed its community-pool migration of approximately 566,067 USDC.n to the Injective version through governance Proposal 1060 and a community multisig in early November. Injective, Circle, Cosmos Labs, dYdX, and other partners have coordinated the handoff so that the Circle-issued token on Injective becomes the default version recognized by wallets, routers, and exchanges across the interchain.

Public dashboards recently showed roughly $75.5 million of USDC still residing on Noble itself, placing the residual in the $80 million-plus range cited as awaiting migration. dYdX’s $68 million share represents the next substantial block scheduled for the new rail.

Operational Details for Users

After the upgrade, deposits must arrive via Injective. An Injective address is required for primary withdrawals. A temporary Noble withdrawal path remains available until the old backing is fully drained. Holders of USDC.n on other Cosmos chains can continue using the Skip:Go interface to convert to the Injective version before Circle’s January pause.

All timelines remain subject to the outcome of the dYdX vote, validator upgrade coordination, and any final adjustments from Circle. Official channels from the relevant foundations will publish any schedule changes. The proposal keeps the peg promise intact while altering the issuance network that stands behind the collateral used by one of Cosmos’s largest perpetual venues.