Blast

GetBlock provides fast and reliable access to Blast nodes via JSON-RPC API. Connect to the Blast network without running your own infrastructure.

Blast is an EVM-compatible Layer 2 built on the OP Stack as an optimistic rollup, distinguished by native yield: bridged ETH and the USDB stablecoin auto-rebase, so holder balances grow over time without any transfer. It settles to Ethereum L1 and targets roughly two-second block times. Because Blast is EVM-equivalent, standard Ethereum contracts, JSON-RPC methods, and tooling such as Foundry, Hardhat, Ethers.js, and Viem work without modification. Native gas is paid in ETH.

Key Features

• EVM Equivalence: Bytecode-level compatibility with Ethereum; contracts and tooling port over unchanged

• Optimistic Rollup: Built on the OP Stack, settling to Ethereum L1 with fraud-proof security

• Native Yield: Bridged ETH and the USDB stablecoin auto-rebase, accruing yield directly into balances

• Yield Predeploys: Blast system contracts live at fixed 0x43... addresses (Blast yield config, USDB, rebasing WETH)

• Ethereum Tooling: Compatible with MetaMask, Foundry, Hardhat, Remix, Ethers.js, and Viem

• ETH Gas: Native gas is paid in ETH; an additional L1 data fee covers data availability on Ethereum

TECHNICAL DISCLAIMER: AUTHORITATIVE JSON-RPC API SPECIFICATION.

GetBlock's RPC API reference documentation is provided exclusively for informational purposes and to optimize the developer experience. Blast implements the standard Ethereum JSON-RPC interface; the canonical specification for these methods is the Ethereum JSON-RPC specification at ethereum.org, and Blast-specific behaviour is documented at docs.blast.io.

Network Information

Property	Value
Network Name	Blast
Chain ID	81457
Native Currency	ETH (auto-rebasing)
EVM Compatible	Yes
Settlement Layer	Ethereum L1 (optimistic rollup)
Block Time	~2 seconds
Finality	L1-backed after the challenge window
Native Yield	ETH and USDB auto-rebase

Base URL

Frankfurt, Germany

https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/

Supported Networks

Network	Chain ID	JSON-RPC	WSS	GraphQL	MEV protected (WebSocket)	MEV protected (JSON-RPC)	Frankfurt, Germany	New York, USA	Singapore, Singapore
Mainnet	81457	✅	✅	❌	❌	❌	✅	❌	❌
Sepolia	168587773	✅	✅	❌	❌	❌	✅	❌	❌

Quickstart

Javascript(Axios)

1

Setup project

mkdir blast-api-quickstart && cd blast-api-quickstart && npm init --yes

2

Install dependency

npm install axios

3

Add code

index.js

const axios = require('axios');

const url = 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/';

const payload = {
  jsonrpc: '2.0',
  method: 'eth_blockNumber',
  params: [],
  id: 'getblock.io'
};

axios.post(url, payload, {
  headers: { 'Content-Type': 'application/json' }
})
.then(response => {
  console.log('Latest block:', parseInt(response.data.result, 16));
})
.catch(error => console.error(error));

4

Run the script

node index.js

5

Reponse

{
    "jsonrpc": "2.0",
    "result": "0x25f7ad4",
    "id": "getblock.io"
}

Python(Request)

1

Setup project

mkdir blast-api-quickstart && cd blast-api-quickstart
python -m venv venv && source venv/bin/activate

2

Install dependency

pip install requests

3

Add code

main.py

import requests
import json

url = "https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_blockNumber",
    "params": [],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

4

Run the script

python main.py

Available API Methods

Chain & Client Info

Method	Description
web3_clientVersion	Client software version identifier
web3_sha3	Keccak-256 hash of hex-encoded data
net_version	Network ID as a decimal string
net_listening	Whether the node is listening for P2P connections
net_peerCount	Number of connected peers
eth_chainId	Chain ID per EIP-155
eth_blockNumber	Current chain tip block number
eth_syncing	Sync status, or false if fully synced

Gas & Fees

Method	Description
eth_gasPrice	Legacy gas price estimate in wei
eth_maxPriorityFeePerGas	Suggested EIP-1559 priority fee in wei
eth_feeHistory	Historical base fees and priority-fee percentiles

Account & State

Method	Description
eth_getBalance	ETH balance of an address at a given block
eth_accounts	Accounts owned by the client
eth_getStorageAt	Value at a specific contract storage slot
eth_getTransactionCount	Address nonce (transaction count)
eth_getCode	Deployed bytecode at an address
eth_getProof	Merkle-Patricia proof for account and storage

Blocks

Method	Description
eth_getBlockByHash	Block data by block hash
eth_getBlockByNumber	Block data by block number or tag
eth_getBlockTransactionCountByHash	Transaction count in a block, by hash
eth_getBlockTransactionCountByNumber	Transaction count in a block, by number
eth_getBlockReceipts	All transaction receipts for a block

Transactions

Method	Description
eth_getTransactionByHash	Transaction data by transaction hash
eth_getTransactionByBlockHashAndIndex	Transaction by block hash and index
eth_getTransactionByBlockNumberAndIndex	Transaction by block number and index
eth_getTransactionReceipt	Transaction receipt with status, gas, and logs

Execution & Simulation

Method	Description
eth_call	Execute a message call without a transaction
eth_estimateGas	Estimate gas required to execute a transaction
eth_createAccessList	Compute an EIP-2930 access list for a transaction

Filters & Logs

Method	Description
eth_newFilter	Create a log filter with address and topic criteria
eth_newBlockFilter	Create a filter for new block hashes
eth_newPendingTransactionFilter	Create a filter for pending transaction hashes
eth_uninstallFilter	Remove a previously created filter
eth_getFilterChanges	Poll new entries for a filter since the last poll
eth_getFilterLogs	Get all logs matching a log filter
eth_getLogs	Query logs matching criteria in one call

Transaction Submission

Method	Description
eth_sendRawTransaction	Submit a signed transaction to the network

WebSocket Subscriptions

Method	Description
eth_subscribe	Subscribe to newHeads, logs, newPendingTransactions, or syncing
eth_unsubscribe	Cancel an active subscription

RPC Module Discovery

Method	Description
rpc_modules	List available RPC modules and their versions

Debug & Trace

Method	Description
debug_accountRange	Enumerate accounts from the state trie
debug_batchSendRawTransaction	Submit multiple signed transactions in one call
debug_getBadBlocks	List recently rejected invalid blocks
debug_storageRangeAt	Enumerate storage slots of a contract
debug_traceBlock	Trace execution of a block by RLP
debug_traceBlockByHash	Trace all transactions in a block by hash
debug_traceBlockByNumber	Trace all transactions in a block by number
debug_traceCall	Trace a simulated message call
debug_traceTransaction	Trace execution of a mined transaction

Support

For technical support and questions:

• Support: [e-mail]

See Also

• Blast Documentation

• Ethereum JSON-RPC Specification

• Blastscan Explorer

• Blast Bridge

• Blast Website