dag_getHeads RPC Method

Parameters

This method does not accept any parameters

Returns

This method returns nothing

Request

1
curl -X POST "https://docs-demo.fantom.quiknode.pro/" \
2
  -H "Content-Type: application/json" \
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  -d '{
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  "jsonrpc": "2.0",
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  "method": "dag_getHeads",
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  "params": [],
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  "id": 1
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}'

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

1
import { ethers } from "ethers";
2

3
async function main() {
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    const provider = new ethers.JsonRpcProvider("https://docs-demo.fantom.quiknode.pro/");
5
    const response = await provider.send("dag_getHeads", []);
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    console.log(response);
7
}
8

9
main();

1
import { ethers } from "ethers";
2

3
async function main() {
4
    const provider = new ethers.JsonRpcProvider("https://docs-demo.fantom.quiknode.pro/");
5
    const response = await provider.send("dag_getHeads", []);
6
    console.log(response);
7
}
8

9
main();

1
from web3 import Web3, HTTPProvider
2
w3 = Web3(HTTPProvider('https://docs-demo.fantom.quiknode.pro/'))
3
response = w3.provider.make_request("dag_getHeads", [])
4
print(response)

1
from web3 import Web3, HTTPProvider
2
w3 = Web3(HTTPProvider('https://docs-demo.fantom.quiknode.pro/'))
3
response = w3.provider.make_request("dag_getHeads", [])
4
print(response)

1
import { createPublicClient, http } from 'viem'
2

3
async function main() {
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    const client = createPublicClient({
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        transport: http('https://docs-demo.fantom.quiknode.pro/')
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    })
7

8
    const result = await client.request({
9
        method: 'dag_getHeads',
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        params: []
11
    })
12

13
    console.log(result)
14
}
15

16
main()

1
import { createPublicClient, http } from 'viem'
2

3
async function main() {
4
    const client = createPublicClient({
5
        transport: http('https://docs-demo.fantom.quiknode.pro/')
6
    })
7

8
    const result = await client.request({
9
        method: 'dag_getHeads',
10
        params: []
11
    })
12

13
    console.log(result)
14
}
15

16
main()

1
import { Core } from '@quicknode/sdk'
2

3
const core = new Core({
4
  endpointUrl: "https://docs-demo.fantom.quiknode.pro/",
5
})
6

7
core.client
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  .request({
9
    method: 'dag_getHeads',
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    params: []
11
  })
12
  .then(res => console.log(res))

1
import { Core } from '@quicknode/sdk'
2

3
const core = new Core({
4
  endpointUrl: "https://docs-demo.fantom.quiknode.pro/",
5
})
6

7
core.client
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  .request({
9
    method: 'dag_getHeads',
10
    params: []
11
  })
12
  .then(res => console.log(res))

1
const body = {
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    jsonrpc: '2.0',
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    method: 'dag_getHeads',
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    params: [],
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    id: 1
6
}
7

8
async function main() {
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    const response = await fetch('https://docs-demo.fantom.quiknode.pro/', {
10
        method: 'POST',
11
        headers: {'Content-Type': 'application/json'},
12
        body: JSON.stringify(body)
13
    })
14
    const data = await response.json()
15
    console.log(data)
16
}
17

18
main()

1
const body = {
2
    jsonrpc: '2.0',
3
    method: 'dag_getHeads',
4
    params: [],
5
    id: 1
6
}
7

8
async function main() {
9
    const response = await fetch('https://docs-demo.fantom.quiknode.pro/', {
10
        method: 'POST',
11
        headers: {'Content-Type': 'application/json'},
12
        body: JSON.stringify(body)
13
    })
14
    const data = await response.json()
15
    console.log(data)
16
}
17

18
main()

1
import requests
2
import json
3

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

6
payload = json.dumps({
7
  "jsonrpc": "2.0",
8
  "method": "dag_getHeads",
9
  "params": [],
10
  "id": 1
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)

1
import requests
2
import json
3

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

6
payload = json.dumps({
7
  "jsonrpc": "2.0",
8
  "method": "dag_getHeads",
9
  "params": [],
10
  "id": 1
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)

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

5
uri = URI("https://docs-demo.fantom.quiknode.pro/")
6

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "dag_getHeads",
11
  params: []
12
}
13

14
request = Net::HTTP::Post.new(uri)
15
request["Content-Type"] = "application/json"
16
request.body = JSON.generate(payload)
17

18
response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
19
  http.request(request)
20
end
21

22
puts response.body

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

5
uri = URI("https://docs-demo.fantom.quiknode.pro/")
6

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "dag_getHeads",
11
  params: []
12
}
13

14
request = Net::HTTP::Post.new(uri)
15
request["Content-Type"] = "application/json"
16
request.body = JSON.generate(payload)
17

18
response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
19
  http.request(request)
20
end
21

22
puts response.body

Response

1
{
2
  "jsonrpc": "2.0",
3
  "id": 1,
4
  "result": [
5
    "0x0000000000000000000000000000000000000000000000000000000000000000"
6
  ]
7
}

1
{
2
  "jsonrpc": "2.0",
3
  "id": 1,
4
  "result": [
5
    "0x0000000000000000000000000000000000000000000000000000000000000000"
6
  ]
7
}

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