Arbitrum

Enjoy a full range of core RPCs and historical APIs on Arbitrum with Blast API!

Blast offers high performance APIs for Arbitrum, a full stack blockchain scaling suite comprising Arbitrum One, a layer-2 rollup chain which allows cost-efficient dApp deployment.

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Benefits of Arbitrum
EVM Equivalency
Through its equivalency to the layer 1 Ethereum, Arbitrum inherits its enhanced security, also leveraging time-tested fraud proofs through their rollup architecture.

About Arbitrum

Arbitrum is a set of Ethereum L2 scaling technologies developed with the Arbitrum Nitro tech stack (upgraded as of late to Arbitrum Stylus), comprising Arbitrum One and Arbitrum Nova. Although Ethereum is the first cryptocurrency to enable Turing-complete stateful smart contracts, both its scalability and anonymity are constrained, which is why the Arbitrum suite was created in response to these developer pain-points.

Arbitrum One is the first Arbitrum Rollup Chain deployed on the Ethereum mainnet and is now available on Blast. It is completely trustless, inheriting Ethereum's base-layer security guarantees without adding new trust assumptions.
Arbitrum One is an excellent option for decentralized banking and other applications requiring L1-level trustlessness. Arbitrum One was launched publicly in 2021. Shortly after its deployment, prominent Ethereum protocols like Uniswap, Curve, Aave, and Sushi implemented their smart contracts on Arbitrum One. On August 31, 2022, the network underwent a significant upgrade to the Nitro stack, enhancing throughput and reducing gas costs. Arbitrum public endpoints for both Mainnet and Testnet are available in Blast API.

Free public APIs for Arbitrum

Arbitrum One Mainnet

Go to Public API Page
Arbitrum One, a L2 optimistic rollup chain, employs the Arbitrum Rollup protocol and integrates with Ethereum's Layer 1 (L1) chain.

Public RPC Endpoint

Public WSS Endpoint

Playground

MethodDocumentation
eth_blockNumber

Parameters

eth_blockNumber

Returns the number of the most recent block

eth_blockNumber response

Returns the number of the most recent block

resultnumber

An integer value of the current block number the client is on

Request

curl -X POST https://arbitrum-one.public.blastapi.io \
-H 'Content-Type: application/json' \
-d '{"jsonrpc":"2.0","id":0,"method":"eth_blockNumber"}'
See all Public APIs

Get started and claim your Arbitrum Sepolia tokens!

Arbitrum Sepolia Testnet Faucet

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Enter your wallet address in the designated box below and hit the “Claim“ button. Once you've claimed the first distribution of tokens, you will be able to claim again by tweeting with our template and pasting the tweet's URL in the second box. Happy testing!

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Blast Features for Arbitrum Developers

Pay on chain

With the Blast Multichain Payment solution, you can pay on-chain, simply using USDT & USDC to get instant access to premium RPC endpoints straight from your non-custodial wallet!

Included with all plans

Debug & Trace APIs

TThe Debug API gives Arbitrum developers access to several non-standard RPC methods, which will allow them to inspect, debug and set certain debugging flags during runtime. The Trace API provides detailed information about specific transactions on Arbitrum Network, including origins, destinations, and associated data. Debug & Trace APIs are enabled starting with the Developer plan.

Included with Developer, Startup, Enterprise & Pay As You Go plans

Builder API

The Builder APIs are a suite of powerful API endpoints providing access to more comprehensive and better structured blockchain data on the Arbitrum blockchain. You can start using the Builder APIs with the Free plan.

Included with all plans

Archive Nodes

These nodes retain all historical transaction information on the Arbitrum blockchain from the genesis block to the present, enabling users to query and retrieve any past information. The Archive Nodes feature is enabled starting with the Developer plan.

Included with Developer, Startup, Enterprise & Pay As You Go plans

Frequently Asked Questions

What is Arbitrum Stylus?

Arbitrum Stylus is the tech stack that powers the Arbitrum One, Arbitrum Nova, and Arbitrum Orbit chains. Upgraded from Arbitrum Nitro, Stylus adds a coequal virtual machine where EVM contracts still function just like they would on Ethereum. Developers can explore Stylus with help from the Bware Labs Faucet for Arbitrum Stylus.

What are some use cases for Arbitrum?

Given its high throughput and low costs, Arbitrum's enhanced scalability can help with deploying a wide range of dApps such as DeFi Projects, NFTs, Gaming Projects and dApps using Cross-chain Connected Contracts.

Where do I get support if my Arbitrum APIs do not work properly?

No matter your technical issue, our dedicated engineering support team is at your service 24/7 on the Bware Labs Discord server.

How much does it cost to build on Arbitrum using Blast?

No matter if you're just starting in blockchain development or your dApp is readying for Mainnet, the Blast Pricing Plans are designed to cater to your project's necessities in a cost-sensitive manner. Check out more details or contact us on our pricing page.

Where can I find resources to start building on Arbitrum?

Getting started with developing on Arbitrum by using Blast APIs is straightforward. You can follow the instructions in our documentation.

Blast Resources for Arbitrum Developers

Getting started with developing on Arbitrum by using Blast APIs is straightforward. You can follow the instructions in our documentation to set up your development environment and start building.

Core API DocumentationBuilder API Documentation

Arbitrum Articles

Introducing Arbitrum Sepolia Testnet: The Latest Addition to Blast API’s Available Endpoints
ArbitrumSepolia Testnet

Introducing Arbitrum Sepolia Testnet: The Latest Addition to Blast API’s Available Endpoints

The blockchain space is a dynamic and ever-evolving ecosystem, constantly pushing the boundaries of what’s possible. As the demand for scalable, efficient, and developer-friendly solutions grows, so does the need for innovative networks and testnets. Enter Arbitrum Sepolia, the latest addition to Blast’s impressive lineup of supported networks. In this article, we’ll explore what Arbitrum […]

Blast Team

3 min read
Arbitrum APIs now available on Blast
Arbitrum

Arbitrum APIs now available on Blast

#BUIDLers! You can now access Arbitrum’s suite of scaling solutions using the power and reliability of Blast! Good news, Web3 space explorers! We have officially integrated Arbitrum and Arbitrum Nova within Blast! Arbitrum is a set of Ethereum Layer 2 scaling technologies developed with the Arbitrum Nitro tech stack, comprising Arbitrum One and Arbitrum Nova. […]

Blast Team

2 min read