This section of the docs contains guides and reference material for the three basic components of the system: the Arvo kernel, the Vere runtime and Azimuth, the PKI and identity system on the Ethereum blockchain.
While most of the app-related documentation is in the Userspace section, the Kernel documentation is a useful reference when interacting with Vanes from apps.
Kernel
Guides and reference material about Urbit's kernel Arvo, and its kernel modules called Vanes.
Runtime
Urbit's runtime is called Vere. It interprets compiled Nock, handles I/O, and manages state checkpoints and the event log.
Identity
Urbit's indentity system and public-key infrastructure is called Azimuth, and lives on the Ethereum blockchain.