chain_getBlockHash - Moonriver RPC Method
Get block hash by number on Moonriver. Essential for historical queries on the Moonbeam canary network on Kusama for real-world testing of EVM dApps.
Returns the block hash for a given block number on Moonriver.
Use Cases
- Historical queries - Convert block numbers to hashes
- Block navigation - Navigate blockchain history for production-grade dApp testing, early feature deployment, and Kusama-based EVM applications
- Data indexing - Build block number to hash mappings
Request Parameters
Block number. If omitted, returns latest block hash
Response Body
Code Examples
curl \
-X POST \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "chain_getBlockHash",
"params": [1000000],
"id": 1
}'import { ApiPromise, WsProvider } from '@polkadot/api';
const provider = new WsProvider('');
const api = await ApiPromise.create({ provider });
// Get hash for specific block number
const blockNumber = 1000000;
const blockHash = await api.rpc.chain.getBlockHash(blockNumber);
console.log(`Block ${blockNumber} hash:`, blockHash.toHex());
await api.disconnect();import requests
def get_block_hash(block_number=None):
url = ''
params = [block_number] if block_number is not None else []
payload = {
'jsonrpc': '2.0',
'method': 'chain_getBlockHash',
'params': params,
'id': 1
}
response = requests.post(url, json=payload)
return response.json()['result']
block_hash = get_block_hash(1000000)
print(f'Block hash: {block_hash}')Related Methods
chain_getBlock- Get block by hashchain_getHeader- Get block header
chain_getBlock - Moonriver RPC Method
Retrieve block data by hash on Moonriver. Essential for accessing block headers and extrinsics on the Moonbeam canary network on Kusama for real-world testing of EVM dApps.
chain_getFinalizedHead - Moonriver RPC Method
Get the finalized block hash on Moonriver. Essential for confirmed state queries on the Moonbeam canary network on Kusama for real-world testing of EVM dApps.