Status
Testing on Arc testnet· 5
As of 19 September 2026, Built on Arc tracks 5 projects observed on testnet on Circle's Arc. Arc mainnet has been live since 16 September 2026. The projects below have only been observed on testnet (chain 5042002) — the flow works end to end, but no mainnet activity has been observed yet. When we see production use on mainnet, the entry moves to Live and is re-dated.
| # | Project | What it builds on Arc | Role | Status | Links | Checked |
|---|---|---|---|---|---|---|
| 01 | AArcWorldLaunchpads, NFT & Meme · Games | One developer's suite of Arc-testnet apps — NFT mint, virtual card, land, games — not a directory. | Deploys | Testnet | 2026-09-02 | |
| 02 | HHinkalDeveloper Infrastructure · Privacy | Confidential-settlement protocol live on several chains; lists Arc Testnet as supported in its own docs. | Serves | Testnet | 2026-09-02 | |
| 03 | LLunexExchanges & Trading · DEXs | A StableSwap AMM for Arc stablecoin pairs; testnet TVL reported, not independently confirmed. | Deploys | Testnet | 2026-09-02 | |
| 04 | OOrixaLaunchpads, NFT & Meme · Launchpads | A curated NFT launchpad/marketplace for Arc, observed on testnet only. | Deploys | Testnet | 2026-09-02 | |
| 05 |  Ormi LabsDeveloper Infrastructure · Indexing & explorers | Listed by Circle for Arc; real-time and historical indexing for high-throughput apps. | Serves | Testnet | 2026-09-19 |
Questions
Is a testnet deployment a launch?
No. It means the integration works against a test network. No real customer funds are involved until the entry moves to Live.
How is status 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. Live can become Inactive if activity stops.
Does paying change where a project appears?
No. Paid entries are labelled Listing, sit in the same ranked order as everything else, and use rel="sponsored". Payment never affects status, flags, evidence or the Editor's Index.
