Blockchain Data Indexers for Live & Historical Streaming

Built for Your Chain and Everyone Building on It 🪙

01

Streaming live and historical data

Enable low-latency infrastructure for real-time analytics and automation, Sync full chain history in minutes

02

Custom Filtering Logic

Specify the data you want to stream, with custom logic to meet your business logic

03

Cursor-based data streaming

Streams can start from any block. No data gets lost after reconnections

04

Database integration

Transformed data streamed directly into SQL-compatible databases

05

No vendor lock-in

Full control and ownership of your data layer, hosted your way

06

Reuse cached outputs

Stores intermediate results to save time and reduce costs

07

Parallel processing

Splits workloads across workers for fast, scalable indexing

08

Purpose-built for complex environments

Designed to offer flexible and extensible features beyond standard tools

🌐

Serving Protocols That Outgrow Standard Infra

How Blum Scales with Custom Data Streaming

Our Substreams layer powers Blum’s platform with real-time data streaming, fast historical processing, and scalable performance.

Data streams directly from modified nodes, gets transformed, and is pushed straight into databases. The system supports parallel processing, smart caching, and handles chain reorgs.

Discuss Your Needs with an Expert Read Case Study

Chains

EVM | Solana | TON

Results

10,000 RPS

Processing

Under 500ms

Track record

71M+
DeFi Users

Infrastructure behind products used by over 71 million people.

$2.5B
Market Cap

Supporting chains and apps with a combined market cap of $2.5B.

8 Years
in Web3

Shipping production-ready blockchain systems since 2017.

150
Developers

Web3-native team, 150 engineers deep — in house, not outsourced.

SwapX

Haust Network

K9finance DAO

Haven1

Wert

NEO

ICP

XDC

SwapX

Haust Network

K9finance DAO

Haven1

Wert

NEO

ICP

XDC

What makes our way different🚥

	Substreams
Reorg handling	✅ Stream notifications
Data streaming	✅
Sink data anywhere	✅
Custom server-side filtering	✅ Rust functions
High-speed parallel data processing	✅
Transaction traces	✅
Non-EVM networks support	✅
Open Source	✅

	Goldsky Mirror
Reorg handling	✅ Stream notifications
Data streaming	✅
Sink data anywhere	✅
Custom server-side filtering	⚠️ SQL queries only
High-speed parallel data processing	❌
Transaction traces	✅
Non-EVM networks support	✅
Open Source	❌

	Envio HyperSync
Reorg handling	✅ Stream notifications
Data streaming	✅
Sink data anywhere	✅
Custom server-side filtering	⚠️ Limited
High-speed parallel data processing	❌
Transaction traces	✅
Non-EVM networks support	❌
Open Source	❌

	Envio HyperIndex
Reorg handling	✅ Internally during processing
Data streaming	⚠️ GraphQL only
Sink data anywhere	⚠️ Postgres only
Custom server-side filtering	✅ TypeScript functions
High-speed parallel data processing	✅
Transaction traces	✅
Non-EVM networks support	❌
Open Source	❌

	Subgraph
Reorg handling	✅ Internally during processing
Data streaming	⚠️ GraphQL only
Sink data anywhere	⚠️ Postgres only
Custom server-side filtering	✅ AssemblyScript functions
High-speed parallel data processing	❌
Transaction traces	❌
Non-EVM networks support	❌
Open Source	✅

Read our blockchain indexing deep dive

We’ve covered all indexing approaches in detail — what works, what breaks, and why

Dive in Request a demo

	Substreams	Goldsky Mirror	Envio HyperSync	Envio HyperIndex	Subgraph
Reorg handling	✅ Stream notifications	✅ Stream notifications	✅ Stream notifications	✅ Internally during processing	✅ Internally during processing
Data streaming	✅	✅	✅	⚠️ GraphQL only	⚠️ GraphQL only
Sink data anywhere	✅	✅	✅	⚠️ Postgres only	⚠️ Postgres only
Custom server-side filtering	✅ Rust functions	⚠️ SQL queries only	⚠️ Limited	✅ TypeScript functions	✅ AssemblyScript functions
High-speed parallel data processing	✅	❌	❌	✅	❌
Transaction traces	✅	✅	✅	✅	❌
Non-EVM networks support	✅	✅	❌	❌	❌
Open Source	✅	❌	❌	❌	✅

⚡

Substreams
performance at a glance

Over 99.9%

Uptime

Up to 150,000 blocks/second

Indexing speed

Sub-second

Latency

50%

Cost reduction

⚙️ How it works

Modified Nodes

Modified to stream raw data

Maintain high availability with multiple nodes

Stream data into storage buckets

Buckets

Cache and store data as flat files

Use S3-compatible cloud storage

Supply stored data to Firehose

Firehose

Extracts data from buckets

Streams data via gRPC to user

Supports cursor and reorg notifications

gRPC

Efficient binary streaming protocol

Switch between historical and live block data

Independent of tech stack or language

Substreams

Eliminates data overfetching

Processes developer-defined data filters

Convert blocks and cached inputs into structured outputs

Parallel processing with cached storage

SQL Sink

Apply custom data transformations

Stream transformed data into databases

Handles chain reorgs within DB

🛠

Built for Every App
on Your Chain

📈 DeFi

AI, DEXs, perpetuals, lending, prediction markets, meme pads

🤖 Trading products

Bots, portfolio trackers, analytics tools

📊 Analytics

Explorers, aggregators, dashboards, signals, market insights