What is actually being built on Arc
Arc mainnet has been live since 16 September 2026. Every project here is checked against a source and dated — so you can see what is running on mainnet, what is still on testnet, and what has only been announced.
Directory
How we rank| # | Project | What it builds on Arc | Role | Status | Links | Checked |
|---|---|---|---|---|---|---|
| 91 | Listed by Circle for Arc; a stablecoin-native FX exchange on the chain. | Deploys | Live on Arc | 2026-09-28 | ||
| 92 | Listed by Circle for Arc; a composable API for moving and converting money at scale. | Serves | Live on Arc | 2026-09-28 | ||
| 93 | HHinkalDeveloper Infrastructure · Privacy | Confidential-settlement protocol live on several chains; lists Arc Testnet as supported in its own docs. | Serves | Testnet | 2026-09-02 | |
| 94 | Listed by Circle on the Arc ecosystem page as a bank partner; no integration detail published. | Integrates | Live on Arc | 2026-09-28 | ||
| 95 | Stablecoin wallet for African remittances; Circle's directory still lists it as Hurupay. | Integrates | Announced | 2026-09-02 | ||
| 96 | IICEBanks & Enterprises · Founding validatorsFounding validator | Founding validator named in Circle's Arc mainnet release; exchange-side use not yet detailed. | Integrates | Announced | 2026-09-02 | |
| 97 | IIMCExchanges & Trading · Market makers | Named in Circle's Arc testnet release; institutional market making exposure to Arc. | Integrates | Announced | 2026-09-02 | |
| 98 | IInvescoBanks & Enterprises · Asset managers | Named in Circle's Arc testnet release; asset manager exploring tokenized fund settlement. | Integrates | Announced | 2026-09-02 | |
| 99 | Listed by Circle for Arc; the yen stablecoin issuer making JPYC available on Arc. | Issues | Live on Arc | 2026-09-28 | ||
| 100 | Day-one integration named by Circle; market making for Arc stablecoin pairs. | Integrates | Live on Arc | 2026-09-28 | ||
| 101 | Day-one integration named by Circle; exchange support for Arc deposits and withdrawals. | Integrates | Live on Arc | 2026-09-28 | ||
| 102 | Listed by Circle for Arc; Korean insurer exploring tokenised settlement. | Integrates | Live on Arc | 2026-09-28 | ||
| 103 | Listed by Circle for Arc; messaging endpoints so apps can move value in and out of Arc. | Serves | Live on Arc | 2026-09-28 | ||
| 104 | Day-one integration named by Circle; hardware wallet support for Arc accounts. | Serves | Live on Arc | 2026-09-28 | ||
| 105 | Listed by Circle for Arc; cross-border settlement for Chinese merchants and marketplaces. | Integrates | Announced | 2026-09-02 | ||
Questions
Which Arc does this site cover?
Built on Arc covers Circle's Arc, the stablecoin-native Layer-1 blockchain (mainnet chain ID 5042; testnet 5042002) that launched mainnet on 16 September 2026. It does not cover the ARC token, Aave Arc (a 2022 permissioned lending pool), Arc Raiders, Azure Arc or the Arc web browser.
Is Arc mainnet live?
Yes. Circle's Arc mainnet launched on 16 September 2026 (chain ID 5042). Built on Arc tracks which projects are observed on mainnet, which are only on testnet, and which have only been announced.
How is a project's status on Arc decided?
Status reflects what we observed on the date shown, not what a project announced. Every entry carries a dated source you can open and check yourself.
Is Built on Arc affiliated with Circle?
No. Built on Arc is an independent directory of projects building on Circle's Arc blockchain, not affiliated with, endorsed by or sponsored by Circle Internet Group.