# Wormhole

Announced · [Bridges and cross-chain](https://builder.registrai.cc/ecosystem/bridges/) · Last reviewed 2026-10-20

Open-source cross-chain messaging and token-transfer infrastructure. Named among crosschain providers in Circle's 2025-10-28 Arc testnet announcement; Arc is registered as chain id 71 in the Wormhole TypeScript SDK.

[Website](https://wormhole.com) · [X @wormhole](https://x.com/wormhole) · [GitHub](https://github.com/wormhole-foundation) · [Docs](https://wormhole.com/docs)

## Status

- First announced 2025-10-28

Evidence: [Circle launches Arc public testnet](https://www.arc.io/pressroom/circle-launches-arc-public-testnet) · [Wormhole on arc.io ecosystem](https://www.arc.io/ecosystem/wormhole)

## Sources

1. [Circle launches Arc public testnet](https://www.arc.io/pressroom/circle-launches-arc-public-testnet) (2026-10-20)
2. [Wormhole SDK chain constants](https://raw.githubusercontent.com/wormhole-foundation/wormhole-sdk-ts/main/core/base/src/constants/chains.ts) (2026-10-20)
3. [Wormhole website](https://wormhole.com) (2026-10-20)
4. [wormhole on arc.io ecosystem](https://www.arc.io/ecosystem/wormhole) (2026-10-20)

[Suggest a correction](https://builder.registrai.cc/ecosystem/wormhole/correct/) · [How we publish](https://builder.registrai.cc/how-we-publish/) · [Arc ecosystem](https://builder.registrai.cc/ecosystem/)

Source: https://builder.registrai.cc/ecosystem/wormhole/ · Registrai, builder.registrai.cc, CC BY 4.0