> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.
# eth_getBlockByNumber | Hyperliquid EVM
> Returns information about a block by its number.
This method is available on Chainstack. Not all Hyperliquid methods are available on Chainstack, as the open-source node implementation does not support them yet — see [Hyperliquid methods](/docs/hyperliquid-methods) for the full availability breakdown.
The `eth_getBlockByNumber` JSON-RPC method returns information about a block by its number. This method is essential for retrieving block data when you know the block number, commonly used for sequential block processing, blockchain synchronization, and historical data analysis.
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## Parameters
The method takes two parameters:
1. **Block number** - The number of the block to retrieve
2. **Full transaction objects** - Whether to return full transaction objects or just hashes
### Parameter details
* `blockNumber` (string, required) — Block identifier: `"latest"`, `"earliest"`, `"pending"`, or a specific block number in hexadecimal
* `fullTransactionObjects` (boolean, required) — If `true`, returns full transaction objects; if `false`, returns only transaction hashes
## Response
The method returns detailed information about the specified block, or `null` if the block is not found.
### Response structure
**Block object:**
* `number` — Block number as a hexadecimal string
* `hash` — The 32-byte hash of the block
* `parentHash` — Hash of the parent block
* `timestamp` — Block timestamp as a Unix timestamp in hexadecimal
* `gasLimit` — Maximum gas allowed in this block
* `gasUsed` — Total gas used by all transactions in the block
* `transactions` — Array of transaction hashes or full transaction objects
* `miner` — Address of the block miner/validator
* `difficulty` — Block difficulty (may be 0 for some consensus mechanisms)
* `totalDifficulty` — Total difficulty of the chain until this block
* `size` — Block size in bytes as a hexadecimal string
* `extraData` — Extra data field of the block
* `nonce` — Block nonce (if applicable)
* `receiptsRoot` — Root hash of the receipts trie
* `stateRoot` — Root hash of the state trie
* `transactionsRoot` — Root hash of the transactions trie
### Block number formats
**Special identifiers:**
* `"latest"` — Most recent block
* `"earliest"` — Genesis block (block 0)
* `"pending"` — Pending block being mined
**Hexadecimal numbers:**
* `"0x0"` — Genesis block
* `"0x1"` — Block 1
* `"0x9d0c37"` — Block 10,291,255 (decimal)
## Hyperliquid-specific considerations
### System transactions
**HyperCore transactions:**
* Blocks may contain system transactions that originate from HyperCore
* Use `eth_getSystemTxsByBlockNumber` to retrieve system transactions specifically
* System transactions are separate from regular user transactions
* Important for complete block analysis and understanding network activity
### Block processing
**Sequential access:**
* Process blocks sequentially for complete chain analysis
* Handle missing blocks gracefully in case of gaps
* Use block numbers for efficient sequential processing
* Track last processed block for incremental updates
**Block number formats:**
* `"latest"` — Most recent block
* `"earliest"` — Genesis block (block 0)
* `"0x1a4"` — Specific block number in hexadecimal (420 in decimal)
## Example request
```shell Shell theme={"system"}
curl -X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["0x9d0c37",false],"id":1}' \
https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274/evm
```
## Use cases
The `eth_getBlockByNumber` method is essential for applications that need to:
* **Blockchain synchronization**: Download and process blocks sequentially
* **Block explorers**: Display block information and enable navigation
* **Analytics platforms**: Collect block data for network analysis
* **Transaction monitoring**: Track transactions within specific blocks
* **Historical analysis**: Study past blockchain states and events
* **Audit systems**: Verify blockchain integrity and transaction history
* **Development tools**: Debug and test blockchain applications
* **System transaction analysis**: Analyze both regular and HyperCore system transactions
* **Network monitoring**: Track block production and network health
* **Integration services**: Provide block data to external systems
Block numbers are sequential. If a block number doesn't exist (e.g., future block), the method returns `null`. On Hyperliquid, blocks may contain system transactions from HyperCore - use `eth_getSystemTxsByBlockNumber` to retrieve these separately.
## OpenAPI
````yaml /openapi/hyperliquid_node_api/evm_eth_get_block_by_number.json post /evm
openapi: 3.0.0
info:
title: Hyperliquid EVM API - eth_getBlockByNumber
version: 1.0.0
servers:
- url: >-
https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274
security: []
paths:
/evm:
post:
summary: eth_getBlockByNumber
description: Returns information about a block by its number.
requestBody:
required: true
content:
application/json:
schema:
type: object
required:
- jsonrpc
- method
- params
- id
properties:
jsonrpc:
type: string
enum:
- '2.0'
default: '2.0'
description: JSON-RPC version
method:
type: string
enum:
- eth_getBlockByNumber
default: eth_getBlockByNumber
description: The RPC method name
params:
type: array
description: 'Parameters: [blockNumber, fullTransactionObjects]'
default:
- '0x9d0c37'
- false
id:
type: integer
default: 1
description: Request identifier
example:
jsonrpc: '2.0'
method: eth_getBlockByNumber
params:
- '0x9d0c37'
- false
id: 1
responses:
'200':
description: Successful response with block information
content:
application/json:
schema:
type: object
properties:
jsonrpc:
type: string
description: JSON-RPC version
id:
type: integer
description: Request identifier
result:
type: object
properties:
number:
type: string
description: Block number as a hexadecimal string
hash:
type: string
description: Block hash
parentHash:
type: string
description: Hash of the parent block
timestamp:
type: string
description: Block timestamp as a hexadecimal string
gasLimit:
type: string
description: Gas limit for the block
gasUsed:
type: string
description: Total gas used by all transactions in the block
transactions:
type: array
description: >-
Array of transaction hashes or full transaction
objects
miner:
type: string
description: Address of the block miner
difficulty:
type: string
description: Block difficulty
totalDifficulty:
type: string
description: Total difficulty of the chain until this block
size:
type: string
description: Block size in bytes
extraData:
type: string
description: Extra data field of the block
example:
jsonrpc: '2.0'
id: 1
result:
number: '0x9d0c37'
hash: >-
0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef
parentHash: >-
0xabcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890
timestamp: '0x61bc8c3a'
gasLimit: '0x1c9c380'
gasUsed: '0x5208'
transactions:
- 0xabc123...
- 0xdef456...
miner: '0x0000000000000000000000000000000000000000'
difficulty: '0x0'
totalDifficulty: '0x0'
size: '0x220'
extraData: 0x
````