Base Sepolia Denim activated — October 21, 2026

Denim activated on Base Sepolia on October 21, 2026, replacing Flashblocks with canonical 200ms blocks. Flashblocks subscriptions and the "pending" block tag no longer provide preconfirmation data on Sepolia. Use canonical blocks and state instead. Base Mainnet continues to use Flashblocks until its own Denim activation, which is targeting November 2026.

See the Denim migration steps.

Parameters

address

string

REQUIRED

The address from which the transaction count to be checked

blockNumber

string

REQUIRED

The block number as a string in hexadecimal format or tags. The supported tag values include earliest for the earliest/genesis block, latest for the latest mined block, pending for the pending state/transactions, safe for the most recent secure block, and finalized for the most recent secure block accepted by more than 2/3 of validators

Returns

result

The integer of the number of transactions sent from an address encoded as hexadecimal

Request

1
curl -X POST "https://docs-demo.base-mainnet.quiknode.pro/" \
2
  -H "Content-Type: application/json" \
3
  -d '{
4
  "jsonrpc": "2.0",
5
  "method": "eth_getTransactionCount",
6
  "params": [
7
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
8
    "latest"
9
  ],
10
  "id": 1
11
}'

1
curl -X POST "https://docs-demo.base-mainnet.quiknode.pro/" \
2
  -H "Content-Type: application/json" \
3
  -d '{
4
  "jsonrpc": "2.0",
5
  "method": "eth_getTransactionCount",
6
  "params": [
7
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
8
    "latest"
9
  ],
10
  "id": 1
11
}'

1
import { ethers } from "ethers";
2

3
async function main() {
4
    const provider = new ethers.JsonRpcProvider("https://docs-demo.base-mainnet.quiknode.pro/");
5
    const response = await provider.send("eth_getTransactionCount", [
6
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
7
    "latest"
8
]);
9
    console.log(response);
10
}
11

12
main();

1
import { ethers } from "ethers";
2

3
async function main() {
4
    const provider = new ethers.JsonRpcProvider("https://docs-demo.base-mainnet.quiknode.pro/");
5
    const response = await provider.send("eth_getTransactionCount", [
6
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
7
    "latest"
8
]);
9
    console.log(response);
10
}
11

12
main();

1
from web3 import Web3, HTTPProvider
2
w3 = Web3(HTTPProvider('https://docs-demo.base-mainnet.quiknode.pro/'))
3
response = w3.provider.make_request("eth_getTransactionCount", ["0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001","latest"])
4
print(response)

1
from web3 import Web3, HTTPProvider
2
w3 = Web3(HTTPProvider('https://docs-demo.base-mainnet.quiknode.pro/'))
3
response = w3.provider.make_request("eth_getTransactionCount", ["0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001","latest"])
4
print(response)

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

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

8
    const result = await client.request({
9
        method: 'eth_getTransactionCount',
10
        params: [
11
          "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
12
          "latest"
13
        ]
14
    })
15

16
    console.log(result)
17
}
18

19
main()

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

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

8
    const result = await client.request({
9
        method: 'eth_getTransactionCount',
10
        params: [
11
          "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
12
          "latest"
13
        ]
14
    })
15

16
    console.log(result)
17
}
18

19
main()

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

3
const qn = new QuicknodeSdk({})
4

5
const result = await qn.rpc.call(
6
  'eth_getTransactionCount',
7
  [
8
  "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
9
  "latest"
10
],
11
  undefined,
12
  'https://docs-demo.base-mainnet.quiknode.pro/'
13
)
14

15
console.log(result)

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

3
const qn = new QuicknodeSdk({})
4

5
const result = await qn.rpc.call(
6
  'eth_getTransactionCount',
7
  [
8
  "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
9
  "latest"
10
],
11
  undefined,
12
  'https://docs-demo.base-mainnet.quiknode.pro/'
13
)
14

15
console.log(result)

1
import asyncio
2
from quicknode_sdk import QuicknodeSdk, SdkFullConfig
3

4
async def main():
5
    qn = QuicknodeSdk(SdkFullConfig(api_key=None))
6
    result = await qn.rpc.call(
7
        "eth_getTransactionCount",
8
        [
9
            "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
10
            "latest"
11
        ],
12
        endpoint_url="https://docs-demo.base-mainnet.quiknode.pro/",
13
    )
14
    print(result)
15

16
asyncio.run(main())

1
import asyncio
2
from quicknode_sdk import QuicknodeSdk, SdkFullConfig
3

4
async def main():
5
    qn = QuicknodeSdk(SdkFullConfig(api_key=None))
6
    result = await qn.rpc.call(
7
        "eth_getTransactionCount",
8
        [
9
            "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
10
            "latest"
11
        ],
12
        endpoint_url="https://docs-demo.base-mainnet.quiknode.pro/",
13
    )
14
    print(result)
15

16
asyncio.run(main())

1
require "quicknode_sdk"
2

3
qn = QuicknodeSdk::SDK.from_config(api_key: nil)
4

5
result = qn.rpc.call(
6
  method: "eth_getTransactionCount",
7
  params: [
8
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
9
    "latest"
10
  ],
11
  endpoint_url: "https://docs-demo.base-mainnet.quiknode.pro/"
12
)
13

14
puts result

1
require "quicknode_sdk"
2

3
qn = QuicknodeSdk::SDK.from_config(api_key: nil)
4

5
result = qn.rpc.call(
6
  method: "eth_getTransactionCount",
7
  params: [
8
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
9
    "latest"
10
  ],
11
  endpoint_url: "https://docs-demo.base-mainnet.quiknode.pro/"
12
)
13

14
puts result

1
use quicknode_sdk::{QuicknodeSdk, SdkFullConfig};
2

3
#[tokio::main]
4
async fn main() -> Result<(), Box<dyn std::error::Error>> {
5
    let qn = QuicknodeSdk::new(&SdkFullConfig::keyless())?;
6
    let result = qn
7
        .rpc
8
        .call(
9
            "eth_getTransactionCount",
10
            Some(serde_json::json!([
11
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
12
    "latest"
13
])),
14
            None,
15
            Some("https://docs-demo.base-mainnet.quiknode.pro/".into()),
16
        )
17
        .await?;
18

19
    println!("{result}");
20
    Ok(())
21
}

1
use quicknode_sdk::{QuicknodeSdk, SdkFullConfig};
2

3
#[tokio::main]
4
async fn main() -> Result<(), Box<dyn std::error::Error>> {
5
    let qn = QuicknodeSdk::new(&SdkFullConfig::keyless())?;
6
    let result = qn
7
        .rpc
8
        .call(
9
            "eth_getTransactionCount",
10
            Some(serde_json::json!([
11
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
12
    "latest"
13
])),
14
            None,
15
            Some("https://docs-demo.base-mainnet.quiknode.pro/".into()),
16
        )
17
        .await?;
18

19
    println!("{result}");
20
    Ok(())
21
}

1
const body = {
2
    jsonrpc: '2.0',
3
    method: 'eth_getTransactionCount',
4
    params: ["0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001","latest"],
5
    id: 1
6
}
7

8
async function main() {
9
    const response = await fetch('https://docs-demo.base-mainnet.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: 'eth_getTransactionCount',
4
    params: ["0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001","latest"],
5
    id: 1
6
}
7

8
async function main() {
9
    const response = await fetch('https://docs-demo.base-mainnet.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.base-mainnet.quiknode.pro/"
5

6
payload = json.dumps({
7
  "jsonrpc": "2.0",
8
  "method": "eth_getTransactionCount",
9
  "params": [
10
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
11
    "latest"
12
  ],
13
  "id": 1
14
})
15
headers = {
16
  'Content-Type': 'application/json'
17
}
18

19
response = requests.request("POST", url, headers=headers, data=payload)
20

21
print(response.text)

1
import requests
2
import json
3

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

6
payload = json.dumps({
7
  "jsonrpc": "2.0",
8
  "method": "eth_getTransactionCount",
9
  "params": [
10
    "0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001",
11
    "latest"
12
  ],
13
  "id": 1
14
})
15
headers = {
16
  'Content-Type': 'application/json'
17
}
18

19
response = requests.request("POST", url, headers=headers, data=payload)
20

21
print(response.text)

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

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

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "eth_getTransactionCount",
11
  params: ["0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001","latest"]
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.base-mainnet.quiknode.pro/")
6

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "eth_getTransactionCount",
11
  params: ["0xDeaDDEaDDeAdDeAdDEAdDEaddeAddEAdDEAd0001","latest"]
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": "0x27221c4"
5
}

1
{
2
  "jsonrpc": "2.0",
3
  "id": 1,
4
  "result": "0x27221c4"
5
}

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