# hypha > The distributed substrate Entities, ops, snapshots, and locks across your machines — the connective layer between nodes and workloads. ## Table of Contents ### Tutorials - [Your first entity](/hypha/tutorials/first-entity.md) ### How-to - [Build and test](/hypha/how-to/run-the-tests.md) - [Read the ledger](/hypha/how-to/read-the-ledger.md) ### Explanation - [Architecture](/hypha/explanation/architecture.md) - [Entities, ops, snapshots](/hypha/explanation/model.md) - [Boundary with sepia and peregrin](/hypha/explanation/boundary.md) ### Reference - [Crates](/hypha/reference/crates.md) - [Environment](/hypha/reference/environment.md) - [Wire API](/hypha/reference/wire-api.md) ### Other - [Getting started](/hypha/getting-started.md) - [Untitled](/hypha/public/api/static.files/SourceSerif4-LICENSE-a2cfd9d5.md)