Parameters

BlockNumber

integer

The block number for which you want to obtain the corresponding block hash. If not provided, the request will return the hash for the latest block

Returns

result

string

The block hash of the specified block number

Request

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

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

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

4
var raw = JSON.stringify({
5
  "method": "chain_getBlockHash",
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_getBlockHash",
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_getBlockHash",
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_getBlockHash",
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_getBlockHash",
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_getBlockHash",
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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