The Graph is an indexing protocol for decentralized applications that allows developers to efficiently access blockchain data. Developers can build subgraphs that define how to ingest, index, and serve blockchain data in a verifiable way.
There are four types of participants in the protocol:
Indexers: node operators that stake GRT in order to provide indexing and query processing services. Indexers earn query fees and indexer rewards for their services.
Curators: subgraph developers, data consumers or community members who signal to Indexers which APIs should be indexed by the protocol.
Delegators: individuals who would like to contribute to securing the network but do not want to run a Graph Node themselves.
Consumers: end-users that query subgraphs and pay query fees to the Indexers, Curators and Delegators.
GRT is the native ERC-20 utility token of The Graph and has the following use cases:
Staking: Indexers stake GRT to provide indexing and querying services.
Deposit: Curators deposit GRT into a bonding curve to signal on a specific subgraph and earn a portion of query fees.
Delegation: Delegators contribute by delegating GRT to existing Indexers and earn a portion of query fees and indexing rewards in return.
Payment: Consumers pay GRT for subgraph queries to the Indexers, Curators and Delegators.
Reward: Indexers and Delegators will earn indexing rewards in the form of GRT.
The Graph raised 7.5MM USD from private investors for approximately 17% of the GRT total token supply between April 2018 and June 2020, and approximately 6% of the total GRT supply has been sold in public token sales at 0.026 USD / GRT and 0.03 USD / GRT.
Total GRT supply at mainnet launch will be 10,000,000,000. More details of the GRT token distribution can be found here.