/blocks/head/header REST API Endpoint

Path Parameters

Query Parameters

finalized

boolean

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Returns

number

string

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parentHash

string

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stateRoot

string

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extrinsicRoot

string

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digest

object

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logs

array

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preRuntime

array

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seal

array

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consensus

array

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Request

1
# AssetHub (default) - for head block header from AssetHub parachain
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curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/blocks/head/header?finalized=true' \
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--header 'Accept: application/json'
4

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# Polkadot Relaychain - for head block header from Relaychain (requires /rc prefix)
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curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/rc/blocks/head/header?finalized=true' \
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--header 'Accept: application/json'

1
# AssetHub (default) - for head block header from AssetHub parachain
2
curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/blocks/head/header?finalized=true' \
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--header 'Accept: application/json'
4

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# Polkadot Relaychain - for head block header from Relaychain (requires /rc prefix)
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curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/rc/blocks/head/header?finalized=true' \
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--header 'Accept: application/json'

1
// For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
2

3
const myHeaders = new Headers();
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myHeaders.append("Accept", "application/json");
5

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const requestOptions = {
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  method: "GET",
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  headers: myHeaders,
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  redirect: "follow"
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};
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  fetch("https://docs-demo.dot-mainnet.quiknode.pro/blocks/head/header?finalized=true", requestOptions)
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    .then((response) => response.text())
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    .then((result) => console.log(result))
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    .catch((error) => console.error(error));
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1
// For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
2

3
const myHeaders = new Headers();
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myHeaders.append("Accept", "application/json");
5

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const requestOptions = {
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  method: "GET",
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  headers: myHeaders,
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  redirect: "follow"
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};
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  fetch("https://docs-demo.dot-mainnet.quiknode.pro/blocks/head/header?finalized=true", requestOptions)
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    .then((response) => response.text())
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    .then((result) => console.log(result))
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    .catch((error) => console.error(error));
16

1
import requests
2
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
3

4

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url = "https://docs-demo.dot-mainnet.quiknode.pro/blocks/head/header?finalized=True"
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payload = {}
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headers = {
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  'Accept': 'application/json'
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}
10

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response = requests.request("GET", url, headers=headers, data=payload)
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print(response.text)
13

1
import requests
2
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
3

4

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url = "https://docs-demo.dot-mainnet.quiknode.pro/blocks/head/header?finalized=True"
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payload = {}
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headers = {
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  'Accept': 'application/json'
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}
10

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response = requests.request("GET", url, headers=headers, data=payload)
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print(response.text)
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1
require "uri"
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require "net/http"
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# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
4

5

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url = URI("https://docs-demo.dot-mainnet.quiknode.pro/blocks/head/header?finalized=true")
7

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https = Net::HTTP.new(url.host, url.port)
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https.use_ssl = true
10

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request = Net::HTTP::Get.new(url)
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response = https.request(request)
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puts response.read_body
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1
require "uri"
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require "net/http"
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# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
4

5

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url = URI("https://docs-demo.dot-mainnet.quiknode.pro/blocks/head/header?finalized=true")
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https = Net::HTTP.new(url.host, url.port)
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https.use_ssl = true
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request = Net::HTTP::Get.new(url)
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response = https.request(request)
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puts response.read_body
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