Stablecoin issuers on Arc — the native pair, and who else is listed

Arc's native stablecoin pair is USDC and EURC, both issued by Circle — the same company that operates the chain. USDC is Arc's gas asset; EURC is Arc's other Circle-issued currency. Circle's own Arc documentation publishes a testnet contract address for EURC and states plainly that no mainnet address exists as of 2 Sep 2026. Beyond Circle's own pair, a handful of third-party stablecoin issuers — JPYC (Japanese yen), Forte's AUDF (Australian dollar), BDACS's KRW1 (Korean won), Luno's ZARU (South African rand), AllUnity and Avenia — appear on Circle's own Arc ecosystem partner page as of 2 Sep 2026, though that page is a BD-gated listing, not a technical confirmation of a live integration.

The native pair: USDC and EURC

Arc is built around Circle's own two regulated stablecoins. Circle's Built on Arc role is Issues (Stablecoins & Tokenized Assets → Stablecoin issuers), for both USDC and EURC. USDC functions as the chain's gas asset — every transaction fee on Arc is denominated and paid in USDC, using an EIP-1559-style base fee model, with a paymaster system that can allow fees to be sponsored in other stablecoins. That is a structural choice distinct from most EVM chains, where gas is paid in a separate, chain-native token with its own volatility profile; Arc ties network usage cost directly to a dollar-pegged asset. EURC is Circle's euro-denominated counterpart, and Circle's documentation lists it alongside USDC as one of the two currencies with published contract addresses on Arc.

Per Circle's own contract-addresses documentation, EURC has a testnet-only contract address (0x89B50855Aa3bE2F677cD6303Cec089B5F319D72a in the testnet reference); the documentation states explicitly: "All addresses on this page are for Arc Testnet. Mainnet addresses are not yet available." As of 2 Sep 2026 — two weeks before Arc's 16 September mainnet launch — Circle has not published a mainnet EURC contract address. USDC's mainnet address is likewise unpublished as of the same date; Circle's docs describe USDC's native gas balance directly rather than as a standard ERC-20 deployment, with a separate optional ERC-20 interface wrapper documented for testnet only.

EURC's regulatory status

EURC is issued by Circle Internet Financial Europe SAS, which Circle's own EURC page describes as "a licensed electronic money institution authorized to issue USDC and EURC as regulated e-money tokens under MiCA regulation in the EEA." That licensing sits under the EU's Markets in Crypto-Assets regulation, whose e-money token (EMT) provisions entered into application in June 2024 — meaning EURC has operated under an EU regulatory framework specific to euro-denominated stablecoins since that point. Circle's own page does not name the specific national regulator that granted the license or a specific grant date; Built on Arc will not attribute a regulator or date Circle itself doesn't publish. Treat "June 2024" as the confirmed regulatory milestone, and the specific license-grant date and granting authority as not independently confirmed as of 2 Sep 2026. This is regulatory description, not legal advice; anyone relying on EURC's compliance status for a business decision should confirm current status directly with Circle or qualified counsel, since MiCA implementation and supervisory practice continue to evolve.

The concentration point worth naming plainly

Arc is a chain where the operator and the issuer of its primary gas and settlement asset are the same company. Circle runs Arc's network, and Circle issues USDC and EURC — the two currencies that move through it and the currency every transaction fee is paid in. That is a structurally different arrangement from a chain like Ethereum, where the base asset (ETH) has no single issuer, or from a chain that adopted an existing third-party stablecoin as its gas token without also controlling the chain. Neither structure is inherently safer or riskier in the abstract, and Built on Arc is not rendering a verdict on it — but it is a real, analyzable concentration: Circle's decisions about USDC's reserve composition, redemption policy, or regulatory standing directly affect Arc's usability as a network, and Arc's health as a network directly affects demand for Circle's stablecoins. Institutions evaluating Arc for settlement infrastructure should treat that coupling as a factor in their own risk assessment, not as background noise.

Third-party stablecoin issuers: what's actually confirmed

Beyond Circle's own pair, Circle's Arc ecosystem page — a curated, invitation-based partner directory rather than an open marketplace — lists a "Stablecoin Issuers" category naming several non-Circle issuers as of 2 Sep 2026: JPYC (a Japanese yen-linked stablecoin), Forte AUD (AUDF, pegged to the Australian dollar), BDACS (issuer of KRW1, a Korean won token, described as Korea's institutional-grade digital asset custody provider), Luno (issuer of ZARU, a South African rand token), AllUnity (a regulated e-money institute) and Avenia (cross-border payment infrastructure spanning Brazil's PIX and global stablecoin flows). JPYC, Forte, BDACS and Luno carry the Issues role (Stablecoins & Tokenized Assets → Stablecoin issuers) per the canonical map; AllUnity and Avenia are not on that map but fit the same role definition and are tagged Issues pending confirmation. Role assignment is separate from confirmation status — none of the six has a confirmed live integration beyond this listing. Their presence on Circle's own ecosystem page is a genuine, sourced signal — Circle chose to list them — but it falls short of a press-release-level confirmation, a published contract address, or documented go-live status on Arc specifically. Built on Arc found no dedicated press release, integration announcement, or technical documentation for any of these six beyond that ecosystem-page listing as of 2 Sep 2026. Treat the list as "named partners," not "live issuers," until stronger evidence surfaces.

No other third-party stablecoin issuer with a sourced Arc commitment was found in this research pass.

What this means for someone evaluating Arc as settlement infrastructure

The practical stablecoin landscape on Arc at mainnet launch is, by the public record, Circle's own two currencies — USDC as gas and settlement asset, EURC as the euro counterpart, both with mainnet contract addresses still unpublished as of 2 Sep 2026. A small set of regional, non-dollar stablecoins have a first-tier relationship with Circle's own ecosystem marketing but not yet a confirmed technical or operational footprint. Anyone building for multi-currency settlement on Arc today should verify current contract addresses directly against docs.arc.io rather than relying on any address published before mainnet, since Circle's own documentation is explicit that testnet and mainnet addresses will differ.

Sources: - Circle: EURC overview and MiCA status - Arc contract addresses documentation - Arc ecosystem page - Arc stable fee design documentation

*Built on Arc is an independent directory. Arc is a Circle product; we are not affiliated with, endorsed by, or operated by Circle.*