The `BigchainDB` class is defined here. Most node-level operations and database interactions are found in this file. This is the place to start if you are interested in implementing a server API, since many of these class methods concern BigchainDB interacting with the outside world.
`Block`, `Transaction`, and `Asset` classes are defined here. The classes mirror the block and transaction structure from the [documentation](https://docs.bigchaindb.com/projects/server/en/latest/data-models/index.html), but also include methods for validation and signing.
Base class for validation methods (verification of votes, blocks, and transactions). The actual logic is mostly found in `transaction` and `block` models, defined in [`models.py`](./models.py).
Entry point for the BigchainDB process, after initialization. All subprocesses are started here: processes to handle new blocks, votes, etc.
### [`config_utils.py`](./config_utils.py)
Methods for managing the configuration, including loading configuration files, automatically generating the configuration, and keeping the configuration consistent across BigchainDB instances.
## Folders
### [`commands`](./commands)
Contains code for the [CLI](https://docs.bigchaindb.com/projects/server/en/latest/server-reference/bigchaindb-cli.html) for BigchainDB.
### [`db`](./db)
Code for building the database connection, creating indexes, and other database setup tasks.
