/eth/v2/beacon/blocks/{block_id} REST API Endpoint

SSZ Response Support

This endpoint also supports SSZ (SimpleSerialize) responses. Set Accept: application/octet-stream in the request header to receive an SSZ-encoded payload instead of JSON. SSZ responses are smaller and faster to parse, and are useful for consensus-layer clients and indexers.

curl -X GET "YOUR_QUICKNODE_ETHEREUM_URL/eth/v2/beacon/blocks/{block_id}" \
    -H "Accept: application/octet-stream" \
    --output block.ssz

Path Parameters

block_id

string

REQUIRED

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Returns

version

string

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data

object

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message

object

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slot

string

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proposer_index

string

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parent_root

string

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state_root

string

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body

object

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signature

string

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Request

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curl -X GET "https://docs-demo.quiknode.pro/eth/v2/beacon/blocks/head" \
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  -H "Content-Type: application/json" \
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  -H "Accept: application/json"

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curl -X GET "https://docs-demo.quiknode.pro/eth/v2/beacon/blocks/head" \
2
  -H "Content-Type: application/json" \
3
  -H "Accept: application/json"

1
async function main() {
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    const response = await fetch('https://docs-demo.quiknode.pro/eth/v2/beacon/blocks/head', {
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        method: 'GET',
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        headers: {'Content-Type': 'application/json', 'Accept': 'application/json'}
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    })
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    const data = await response.json()
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    console.log(data)
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}
9

10
main()

1
async function main() {
2
    const response = await fetch('https://docs-demo.quiknode.pro/eth/v2/beacon/blocks/head', {
3
        method: 'GET',
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        headers: {'Content-Type': 'application/json', 'Accept': 'application/json'}
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    })
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    const data = await response.json()
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    console.log(data)
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}
9

10
main()

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import requests
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import json
3

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url = "https://docs-demo.quiknode.pro/eth/v2/beacon/blocks/head"
5

6
headers = {
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  'Content-Type': 'application/json',
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  'Accept': 'application/json'
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}
10

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response = requests.request("GET", url, headers=headers)
12

13
print(response.text)

1
import requests
2
import json
3

4
url = "https://docs-demo.quiknode.pro/eth/v2/beacon/blocks/head"
5

6
headers = {
7
  'Content-Type': 'application/json',
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  'Accept': 'application/json'
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}
10

11
response = requests.request("GET", url, headers=headers)
12

13
print(response.text)

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

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uri = URI("https://docs-demo.quiknode.pro/eth/v2/beacon/blocks/head")
6

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request = Net::HTTP::Get.new(uri)
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request["Content-Type"] = "application/json"
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request["Accept"] = "application/json"
10

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response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
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  http.request(request)
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end
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puts response.body

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

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uri = URI("https://docs-demo.quiknode.pro/eth/v2/beacon/blocks/head")
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request = Net::HTTP::Get.new(uri)
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request["Content-Type"] = "application/json"
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request["Accept"] = "application/json"
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response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
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  http.request(request)
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end
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puts response.body

Response

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{
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  "version": "fulu",
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  "execution_optimistic": false,
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  "finalized": false,
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  "data": {
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    "message": {
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      "slot": "14114189",
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      "proposer_index": "1660070",
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      "parent_root": "0x135a0798fa8e27424e078ea2ff7c34784ed74c48eccd025a2ddb26592884b3c8",
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      "state_root": "0x4d083b32036d09f04cfc26af83d9f8c5e6d84f37b416a89334da912452039f75",
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      "body": {
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        "graffiti": "0x0000000000000000000000000000000000000000000000000000000000000000"
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      }
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    },
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    "signature": "0xb1c39ef8dfccb963b3e741c9f0650b1ec51b663d953f3515589a578324f0dc8df7a46df84f763ffaad3ef9e01f42f185123c6ecccc0398b07d234a18402b57e6e9f5218ce1d50b0c3fa3cabbf99477c6f65a1130983e559bb32665369eded6ef"
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  }
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}

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{
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  "version": "fulu",
3
  "execution_optimistic": false,
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  "finalized": false,
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  "data": {
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    "message": {
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      "slot": "14114189",
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      "proposer_index": "1660070",
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      "parent_root": "0x135a0798fa8e27424e078ea2ff7c34784ed74c48eccd025a2ddb26592884b3c8",
10
      "state_root": "0x4d083b32036d09f04cfc26af83d9f8c5e6d84f37b416a89334da912452039f75",
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      "body": {
12
        "graffiti": "0x0000000000000000000000000000000000000000000000000000000000000000"
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      }
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    },
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    "signature": "0xb1c39ef8dfccb963b3e741c9f0650b1ec51b663d953f3515589a578324f0dc8df7a46df84f763ffaad3ef9e01f42f185123c6ecccc0398b07d234a18402b57e6e9f5218ce1d50b0c3fa3cabbf99477c6f65a1130983e559bb32665369eded6ef"
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  }
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}

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