Parameters

BlockHash

string

The hash of the block for which you want to retrieve the header information. If not provided, the request will return the header of the latest block on the chain

Returns

result

object

An object representing the header information of the requested block:

parentHash

string

The hash of the parent block, which is the previous block in the chain

number

string

The block number or height in the blockchain sequence

stateRoot

string

The root hash of the state trie after applying the block's transactions

extrinsicsRoot

string

The root hash of the trie containing the extrinsics (transactions) in the block

digest

array | object

An array containing additional data attached to the block, such as logs

logs

array

An array of digest log entries (hex strings)

Request

1
curl https://docs-demo.dot-mainnet.quiknode.pro/ \
2
 -X POST \
3
 -H "Content-Type: application/json" \
4
 --data '{"method":"chain_getHeader","params":[],"id":1,"jsonrpc":"2.0"}'
5

1
curl https://docs-demo.dot-mainnet.quiknode.pro/ \
2
 -X POST \
3
 -H "Content-Type: application/json" \
4
 --data '{"method":"chain_getHeader","params":[],"id":1,"jsonrpc":"2.0"}'
5

1
var myHeaders = new Headers();
2
myHeaders.append("Content-Type", "application/json");
3

4
var raw = JSON.stringify({
5
  "method": "chain_getHeader",
6
  "params": [],
7
  "id": 1,
8
  "jsonrpc": "2.0"
9
});
10

11
var requestOptions = {
12
  method: 'POST',
13
  headers: myHeaders,
14
  body: raw,
15
  redirect: 'follow'
16
};
17

18
fetch("https://docs-demo.dot-mainnet.quiknode.pro/", requestOptions)
19
  .then(response => response.text())
20
  .then(result => console.log(result))
21
  .catch(error => console.log('error', error));

1
var myHeaders = new Headers();
2
myHeaders.append("Content-Type", "application/json");
3

4
var raw = JSON.stringify({
5
  "method": "chain_getHeader",
6
  "params": [],
7
  "id": 1,
8
  "jsonrpc": "2.0"
9
});
10

11
var requestOptions = {
12
  method: 'POST',
13
  headers: myHeaders,
14
  body: raw,
15
  redirect: 'follow'
16
};
17

18
fetch("https://docs-demo.dot-mainnet.quiknode.pro/", requestOptions)
19
  .then(response => response.text())
20
  .then(result => console.log(result))
21
  .catch(error => console.log('error', error));

1
import requests
2
import json
3

4
url = "https://docs-demo.dot-mainnet.quiknode.pro/"
5

6
payload = json.dumps({
7
  "method": "chain_getHeader",
8
  "params": [],
9
  "id": 1,
10
  "jsonrpc": "2.0"
11
})
12
headers = {
13
  'Content-Type': 'application/json'
14
}
15

16
response = requests.request("POST", url, headers=headers, data=payload)
17

18
print(response.text)
19

1
import requests
2
import json
3

4
url = "https://docs-demo.dot-mainnet.quiknode.pro/"
5

6
payload = json.dumps({
7
  "method": "chain_getHeader",
8
  "params": [],
9
  "id": 1,
10
  "jsonrpc": "2.0"
11
})
12
headers = {
13
  'Content-Type': 'application/json'
14
}
15

16
response = requests.request("POST", url, headers=headers, data=payload)
17

18
print(response.text)
19

1
require "uri"
2
require "json"
3
require "net/http"
4

5
url = URI("https://docs-demo.dot-mainnet.quiknode.pro/")
6

7
https = Net::HTTP.new(url.host, url.port)
8
https.use_ssl = true
9

10
request = Net::HTTP::Post.new(url)
11
request["Content-Type"] = "application/json"
12
request.body = JSON.dump({
13
  "method": "chain_getHeader",
14
  "params": [],
15
  "id": 1,
16
  "jsonrpc": "2.0"
17
})
18

19
response = https.request(request)
20
puts response.read_body
21

1
require "uri"
2
require "json"
3
require "net/http"
4

5
url = URI("https://docs-demo.dot-mainnet.quiknode.pro/")
6

7
https = Net::HTTP.new(url.host, url.port)
8
https.use_ssl = true
9

10
request = Net::HTTP::Post.new(url)
11
request["Content-Type"] = "application/json"
12
request.body = JSON.dump({
13
  "method": "chain_getHeader",
14
  "params": [],
15
  "id": 1,
16
  "jsonrpc": "2.0"
17
})
18

19
response = https.request(request)
20
puts response.read_body
21

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