Blockbook API Data Access

Access balances, transactions, blocks, and address data through a unified, indexed API — no full node or custom indexer required.

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30+

Blockbook networks

24/7

Support

99,95%

Uptime

200ms

Response time

NOWNodes Blockbook API Benefits

Access indexed blockchain data optimized for fast, read-heavy queries.

Faster read performance

Get faster and more consistent responses for data-heavy queries compared to standard RPC endpoints.

Unified API

Use the same API structure across different networks, reducing integration complexity and maintenance costs.

Reduce infrastructure costs

Access historical blockchain data without deploying, syncing, and maintaining your own indexing infrastructure.

Indexed blockchain data

Query balances, transactions, blocks, and address history from pre-indexed data — no raw node scans or heavy RPC calls.

Blockbook Explorer across multiple networks

Ethereum Classic

Blockbook API Use Cases

Wallets

Access balances, transaction history, and address activity through a fast, indexed API. Ideal for wallet apps that require reliable read access across multiple blockchains.

Explorers

Build blockchain explorers with fast address and transaction lookups powered by indexed data — without running your own indexing infrastructure.

Analytics

Query historical blockchain data at scale for analytics, reporting, and compliance use cases. Get consistent, structured data across multiple networks.

Trading

Build blockchain applications faster using a unified, indexed API for balances, transactions, blocks, and address data — without maintaining nodes or custom indexers.

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More than an RPC node provider

Dedicated Blockbook nodes

Reach out to deploy blockbook nodes for any supported blockchain — even if the network is not available in shared access. We’ll provide pricing and deployment timelines tailored to your requirements.

Unlimited RPS Access

Handle high-throughput workloads with no request-per-second limits on all paid plans. Ideal for explorers, indexers, trading tools, and production-grade dApps.

Guaranteed 99.95% uptime

Reliable performance under any load — with failover nodes, global redundancy, and smart load balancing built in. We ensure stable performance and deliver on our SLA.

24/7 support

Our support team consists of experienced technical experts always ready to help. With a clear SLA, we guarantee fast, clear help, with first responses in under 3 minutes.

One API. +120 blockchains

One RPC provider — +120 blockchains and thousands of tokens. We regularly add new chains, including by request from our users. Check list of nodes.

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Trusted by

Infrastructure partner — TOKEN2049 Origins 2026

200 developers built on NOWNodes at once.

NOWNodes provides RPC infrastructure across 120+ blockchain networks. At TOKEN2049 Origins we powered the 36-hour Multichain Infrastructure Challenge, including a Cardano devnet our team provisioned in under an hour.

200 builders
36 hours
<1h Cardano devnet

TOKEN2049

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Exodus has used NowNodes since 2022 as a cost-effective alternative to running some of our own expensive in-house nodes. The NowNodes support team has always been responsive and friendly, consistently providing quick resolutions to any issues we've encountered.

We have been working with NOWNodes from the very beginning – and through all these years the service has been impeccable. The team has been ready to meet our strenuous requirements in 100% of cases and if anything strokes our fancy, NOWNodes always delivered – no questions asked. We're planning on using NOWNodes for years to come – and we hope the company keeps growing in the future. Good job, NOWNodes!

NOWNodes has been consistently and reliably providing RPC service for 50+ of the blockchains supported by Trust Wallet for several years now. On top of the wide number of chains they already listed, the team has always been open to adapt to our specific needs and add extra slider and chains when asked

NOWNodes is our esteemed partner and one of the best providers out there on the market. Their work ethic and due diligence are impeccable!

NOWNodes has provided hybrix with a high availability and quality service product for over a year now. We would recommend this API provider to anyone looking for proper RPC connections to blockchain services.

NOWNodes have been very helpful every and supportive with any questions we have had and the service is perfect.

We've used the API service of NOWNodes for over a half year now and they have been simply magnificent with their service delivery. The API calls are efficient and their support is always a DM away from resolving issues that need attention.

Running campaigns with NOWNodes has been smooth and effective. The team is responsive, collaborative, and easy to work with. Looking forward to more successful initiatives together.

Your team and all engineers from Nownodes to provide us good service, program API, and support.

FAQ

What is Blockbook API?

Blockbook API is a read-optimized, indexed blockchain API that allows you to query balances, transactions, blocks, and address history through a unified interface. Unlike standard RPC endpoints, Blockbook works on pre-indexed blockchain data, making it ideal for data-heavy use cases such as wallets, explorers, analytics, and monitoring tools — without running your own node or indexer.

How is Blockbook different from RPC?

Standard RPC provides raw access to a blockchain node, optimized for validation and transaction submission. It is not designed for fast or complex read queries.
Blockbook is optimized for reading blockchain data. It uses indexed data to deliver faster, more consistent responses for queries like address balances, transaction history, and historical lookups — making it a better alternative to RPC for read-heavy workloads.

Which blockchains support Blockbook?

Blockbook API is available for 30+ blockchain networks, including major ecosystems such as Bitcoin, Ethereum, Polygon, Arbitrum, BSC, Litecoin, and many others. The list of supported Blockbook networks is constantly expanding. You can check the full and up-to-date list on this page or in the documentation.

Can I get Blockbook API for free?

Yes. You can access all supported RPC networks, including Blockbook interfaces, under throughput limits with free Start plan. By upgrading to a paid plan, you unlock unlimited RPS access to WebSocket (WSS) connections, Blockbook WebSocket interfaces, and other APIs with no RPS limitations.