Circle has broadened the asset coverage of Gateway, its crosschain balance product, adding support for cirBTC and EURC on October 23, 2026. The two assets previously sat outside a system originally built around USDC.

The product's premise is straightforward: rather than tracking separate piles of the same token across a dozen blockchains, a user holds one unified balance per asset and spends it wherever it's needed. That design removes the need to manage fragmented holdings network by network — a chore that grows with every additional chain an application supports.

What Gateway does now

Funds become accessible in under 500 milliseconds once a deposit is finalized, according to the research findings — a window short enough to keep crosschain availability inside the pace of an interactive payment. The update also extends gas-free Nanopayments to cirBTC and EURC. Gas fees are the network charges users pay to process a transaction, and removing them matters most for small, frequent payments, where a fee can easily exceed the value being sent.

Circle is positioning the feature toward businesses, wallets and agentic applications — software agents that transact autonomously, often at high volumes and in small amounts.

Liquidity operates on an on-demand basis. Instead of pre-positioning capital on every chain, users draw it where and when it is required.

The service remains non-custodial, per the research findings, and users retain a 7-day trustless withdrawal option. In practical terms, there is a route to recover funds without depending on Circle's cooperation, at the cost of a one-week wait.

Cumulative transfers through Gateway surpassed $10 billion by mid-October 2026, according to the research. That milestone predates the October 23 expansion, so activity since then is the first to reflect cirBTC and EURC moving through the system.

The new assets and the path to this point

cirBTC is Circle's Bitcoin-backed token. Each unit is backed 1:1 by native Bitcoin held by a regulated Circle entity, and it launched on August 21, 2026 — roughly two months before gaining unified-balance support.

EURC is Circle's euro stablecoin, backed by full euro reserves and compliant with Mi, the European Union's Markets in Crypto-Assets framework. MiCA functions as the EU's rulebook for crypto issuers, and meeting its requirements is effectively a prerequisite for euro-denominated crypto operations in the bloc.

The Gateway expansion follows a September 2026 upgrade to CCTP, Circle's Cross-Chain Transfer Protocol, which enabled native EURC transfers across multiple blockchains, including Arc, Circle's own layer-1 network, and Ethereum.

The research further indicates that developers can adopt the new assets without significant changes to existing setups.

What it means for businesses and builders

Holding a single balance per asset trims the capital buffer required across chains. Money that once sat waiting on five different chains can sit in one place and move the moment it's called.

The arrival of a MiCA-compliant euro stablecoin gives European businesses a native-currency option, instead of routing every flow through a dollar conversion.

cirBTC serves a different use case. Many users want Bitcoin exposure inside applications that do not run on the Bitcoin network, and a 1:1 Bitcoin-backed token spendable across chains from one balance makes that exposure easier to apply in payments and treasury workflows.

One distinction deserves emphasis. Gateway itself is non-custodial, but cirBTC's backing depends on Bitcoin held by a regulated Circle entity. Users are still relying on Circle's custody of the underlying asset, even if the balance layer does not hold their funds. These are two separate trust questions, and conflating them would be a mistake.