The Name Registry

Overview of domains on Solana

Solana can be viewed as a key-value database, where everything, including domains, is uniquely identifiable by a public key. The data inside a domain account contains an object called the Name Registry. The Name Registry is made of a header and payload.

Name Registry

Name Registry Struct

Header

The header contains three public keys that define the domain's properties:

• Parent: Represents the parent domain in the hierarchy.

• Owner: Indicates the entity that has control over the domain.

• Class: A special key that enables advanced use-cases, such as third-party verification in a badge system.

Data: Flexible Data Storage

The data section can hold arbitrary binary data. Its length is set during domain registration, and the domain owner can decide what to store in this part of the Name Registry.

In simple terms, the Name Registry data structure provides a way to organize and store information about a domain on Solana, including its relationships, ownership, and any additional data the owner wishes to include.