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A blockchain indexer is a key piece of infrastructure required to power any Web3 ecosystem. It provides applications with access to a wide range of on-chain data through a flexible and optimized interface. One well-known example is The Graph, a popular blockchain indexer on Ethereum, which simplifies data availability for Web3 applications.

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Service Availability

The Blockchain Indexer service is available on the following blockchains:
ServiceBitcoinCardanoDogecoin
Blockchain IndexerAPI ReferenceAPI ReferenceAPI Reference

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Indexing Data

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Real-Time Data

Maestro’s blockchain indexer is specifically optimized for UTXO** ledger primitives** and focuses on delivering both real-time data liveness and data accuracy. Blockchains operate as an event-driven system with probabilistic transaction finality, meaning the ledger’s “ground truth” isn’t instantly finalized—it can take some time to reach global consensus.
Learn More: What are chain reorgs or rollbacks?
Accessing “real-time” onchain data requires rigorous data integrity checks. Traditional solutions, like adding a block buffer to indexers, only mitigate rollbacks by providing outdated data. Maestro has designed a system that handles rollbacks gracefully and in real-time, giving users live data without sacrificing data integrity. Let’s take a closer look at the components that make up the indexer:
  1. Indexer - Specialized pipelines that extract, match, and process on-chain information, including handling rollbacks.
  2. Storage - A data lake optimized for storing various types of data.
  3. Access - A REST API providing flexible and performant querying capabilities.

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Common Use Cases

Accurate and live on-chain data is critical for delivering an optimal user experience in blockchain applications. Some common use cases for blockchain indexers include:
  • Smart contract-based dApps – Time-sensitive DeFi apps like DEXs, NFT marketplaces, lending protocols, games, and metaverses.
  • Wallets and Decentralized IDs (DIDs) – Real-time UTxO states are crucial for Cardano wallets, cross-chain wallets, and DID systems.
  • Blockchain explorers – Analytics platform require reliable access to large sets of on-chain data.
  • Bridges & Web2 integrations – Blockchain bridges and integrations with traditional Web2 software require access to on-chain information.
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