Audius is a music streaming service built on the Open Audio Protocol, a community-run, open-source protocol for music distribution. Artists, labels and fans use it through web, iOS and Android apps. Artists upload their tracks directly. Developers can build apps on the open catalogue using a REST API and a JavaScript SDK, and "Log in with Audius" lets third-party applications sign users in with an Audius account. The protocol uses blockchain components, including Solana programs and Ethereum contracts for governance and staking.
The AUDIO token powers the ecosystem: infrastructure providers earn staking rewards for securing the catalogue. The Open Audio Foundation, a non-profit, supports development of the protocol. The Audius apps are published on GitHub under the Apache 2.0 licence. Because the protocol relies on infrastructure providers rather than a single operator, the storage location of content is not tied to one region or jurisdiction. The company behind Audius is based in the United States. For a European organisation, token-based governance differs from a conventional vendor relationship.