Blockchain Data Streaming & Indexing

QuickNode's real-time blockchain data streaming infrastructure enables applications to ingest and index on-chain events with guaranteed delivery, millisecond-level latency, and comprehensive historical backfills across 90+ networks.

Real-Time Event Streaming

Streams Platform: Real-time blockchain event ingestion with guaranteed delivery and built-in reorg handling. Configure precise filters to capture specific events including transfers, smart contract interactions, NFT mints, token swaps, and custom event signatures. Filter by addresses, topics, transaction types, and value thresholds.

Delivery Infrastructure: Stream data to webhooks, Amazon S3, Google Cloud Storage, or custom destinations. Support for batch processing and individual event delivery with configurable retry logic and automatic failover for zero data loss.

Reorg Protection: Automatic chain reorganization detection and handling ensures data consistency. Events are held until block confirmation depth requirements are met, with configurable confirmation thresholds.

High-Performance Solana Streaming

Yellowstone gRPC: Ultra-high-performance Solana data streaming using gRPC protocol with sub-millisecond latency. Stream thousands of updates per second with minimal resource consumption, ideal for high-frequency trading, MEV strategies, and real-time analytics.

Advanced Capabilities: Subscribe to blocks, account updates, transactions, and slot production events. Protobuf encoding reduces bandwidth usage by 50-70% compared to JSON-RPC. Single connection supports multiple concurrent subscriptions with independent flow control.

Automatic Recovery: Reconnection handling with state recovery ensures no data loss during network interruptions. Configurable buffer sizes and optional gzip compression.

Historical Data Backfills

Complete History Access: One-click historical data backfills retrieve complete blockchain history in sequence with the same delivery guarantees as live streams. Range-based queries for specific block ranges with guaranteed sequential delivery and automatic pagination.

Flexible Processing: Batch processing options allow reconstruction of past activity or synchronization of new systems using the same trusted pipeline with progress tracking.

Instant Blockchain Alerts

Webhook Notifications: Instant alerts for critical on-chain events with guaranteed delivery. Track wallet addresses, smart contract events, and transaction patterns across all major blockchain networks.

Smart Filtering: Pre-configured templates for common contract types including ERC-20, ERC-721, ERC-1155, and DeFi protocols. Custom filters based on transaction value thresholds, gas prices, and complex logical conditions.

Security & Monitoring: HMAC signature verification, IP whitelisting, and TLS encryption. Real-time dashboard showing webhook success rates, failed deliveries, and performance metrics.

Data Transformation

Built-in Parsers: Common event types including ERC-20 transfers, ERC-721 NFT events, and DEX swaps. Custom transformation functions for specialized use cases with optional data enrichment.

Structured Formats: Transform raw blockchain data into queryable formats with consistent schemas across networks.

Use Cases

Powers wallet applications with real-time balance updates, DeFi analytics platforms monitoring protocol activity, NFT marketplaces tracking mints and sales, trading bots responding to on-chain events, block explorers indexing blockchain data, compliance systems monitoring suspicious transactions, and exchange deposit detection systems.