# Terminology

#### General

* *DID*: Decentralized identity is a method of identifying and authenticating persons and entities that does not rely on a centralized authority.
* *Brand DID*: A top-level DID in the Communities ID system. The holder of the Brand DID has the right to set up and manage the community's DID system.
* *User DID*: A second-level DID in the Communities ID system. Regular users join the corresponding community by minting a User DID.
* *Register*: Brand DID minting on non-Ethereum chains must first register an OmniNode on Ethereum to ensure multi-chain uniqueness.
* *OmniNode*: A universal node deployed on Ethereum.

#### Minting

* *Public Mint*: An open minting mode where anyone can mint a subordinate User DID.
* *NFT-gated Mint*: A mode where only those holding the corresponding Token can mint, set by specifying a token contract address.
* *Invited Mint*: A mode where an encrypted Signature must be entered to allow a specific address to mint a designated User DID.
* *Signer*: The owner of signature rights designated by Brand DID, capable of generating specific Signatures.
* *Signature*: When Signature Mint is enabled, regular users must obtain a Signature from the Signer to mint a corresponding name User DID.

#### Business Model

* *Token Locker*: A specific locker for staked tokens during User DID minting. Each Brand DID has its own Token Locker.
* *Commission Rate*:The commission rate set by the Brand DID holder for its User DID minting. When the Commission Rate is set at 10%, if Alice pledges 100 $APE to mint alice.bayc, 10 $APE will be transferred as a commission to the .bayc Brand DID Holder. The remaining 90 $APE will be pledged in the .bayc Token Locker.
* *Interface Fees*: Communities ID takes 10% from the Commission collected by Brand DID as interface fees.
* *Protocol Fees*: The fees incurred when a User DID holder interacts with their held User DID.
* *TVL:* Abbreviation of "total value locked". In Communities ID, it specifically refers to the total amount of tokens staked in the Token Locker.