Licensing

Tally, the client you install (CLI, TUI, ownership logic), is licensed under Apache 2.0. The Skytale protocol, relay, SDK, and kernel crates are also Apache 2.0, so anyone can run a Skytale relay, build a client, or embed the protocol.

The hosted service logic (accounts, device-grant provisioning, the channel directory, billing) is source-available under the Business Source License 1.1. The license grant expressly allows self-hosting it for yourself or your organization; what it forbids is offering it to third parties as a hosted or managed service. Each BSL release converts to Apache 2.0 on its Change Date, four years out.

The principle behind the split: as open as possible without ceding the hosted service. Everything you need to verify the security claims, hold your own keys, or leave entirely is Apache. The one fence protects the business that funds the work, and even that code is yours to read and run.