Event Listening: It subscribes to attestation-related events emitted by the EAS smart contracts.
Data Storage & Structuring: It processes and stores attestation data in a structured format, often using a database or a decentralized data indexing solution.
Efficient Querying: It allows users and applications to search and retrieve attestations/schemas efficiently, avoiding expensive on-chain lookups.
Filtering & Aggregation: It provides filtering options, allowing queries based on attester, recipient, schema, timestamps, etc.
Off-Chain Enhancements: the indexing service enriches attestation data by linking off-chain metadata or computing derived insights.