eth_getBlockTransactionCountByNumber
curl --request POST \
--url https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300 \
--header 'Content-Type: application/json' \
--data '
{
"jsonrpc": "2.0",
"method": "eth_getBlockTransactionCountByNumber",
"id": 1,
"params": [
"0x6ecf0b4"
]
}
'import requests
url = "https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300"
payload = {
"jsonrpc": "2.0",
"method": "eth_getBlockTransactionCountByNumber",
"id": 1,
"params": ["0x6ecf0b4"]
}
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
jsonrpc: '2.0',
method: 'eth_getBlockTransactionCountByNumber',
id: 1,
params: ['0x6ecf0b4']
})
};
fetch('https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'jsonrpc' => '2.0',
'method' => 'eth_getBlockTransactionCountByNumber',
'id' => 1,
'params' => [
'0x6ecf0b4'
]
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300"
payload := strings.NewReader("{\n \"jsonrpc\": \"2.0\",\n \"method\": \"eth_getBlockTransactionCountByNumber\",\n \"id\": 1,\n \"params\": [\n \"0x6ecf0b4\"\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300")
.header("Content-Type", "application/json")
.body("{\n \"jsonrpc\": \"2.0\",\n \"method\": \"eth_getBlockTransactionCountByNumber\",\n \"id\": 1,\n \"params\": [\n \"0x6ecf0b4\"\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n \"jsonrpc\": \"2.0\",\n \"method\": \"eth_getBlockTransactionCountByNumber\",\n \"id\": 1,\n \"params\": [\n \"0x6ecf0b4\"\n ]\n}"
response = http.request(request)
puts response.read_body{
"jsonrpc": "<string>",
"id": 123,
"result": "<string>"
}Optimism node API
eth_getBlockTransactionCountByNumber | Optimism
Optimism API method that retrieves the number of transactions in a block, identified by its number. Chainstack Optimism reference.
POST
/
efb0a5eccd2caa5135eb54eba6f7f300
eth_getBlockTransactionCountByNumber
curl --request POST \
--url https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300 \
--header 'Content-Type: application/json' \
--data '
{
"jsonrpc": "2.0",
"method": "eth_getBlockTransactionCountByNumber",
"id": 1,
"params": [
"0x6ecf0b4"
]
}
'import requests
url = "https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300"
payload = {
"jsonrpc": "2.0",
"method": "eth_getBlockTransactionCountByNumber",
"id": 1,
"params": ["0x6ecf0b4"]
}
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
jsonrpc: '2.0',
method: 'eth_getBlockTransactionCountByNumber',
id: 1,
params: ['0x6ecf0b4']
})
};
fetch('https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'jsonrpc' => '2.0',
'method' => 'eth_getBlockTransactionCountByNumber',
'id' => 1,
'params' => [
'0x6ecf0b4'
]
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300"
payload := strings.NewReader("{\n \"jsonrpc\": \"2.0\",\n \"method\": \"eth_getBlockTransactionCountByNumber\",\n \"id\": 1,\n \"params\": [\n \"0x6ecf0b4\"\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300")
.header("Content-Type", "application/json")
.body("{\n \"jsonrpc\": \"2.0\",\n \"method\": \"eth_getBlockTransactionCountByNumber\",\n \"id\": 1,\n \"params\": [\n \"0x6ecf0b4\"\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n \"jsonrpc\": \"2.0\",\n \"method\": \"eth_getBlockTransactionCountByNumber\",\n \"id\": 1,\n \"params\": [\n \"0x6ecf0b4\"\n ]\n}"
response = http.request(request)
puts response.read_body{
"jsonrpc": "<string>",
"id": 123,
"result": "<string>"
}Optimism API method that retrieves the number of transactions in a block, identified by its number. This method allows for understanding the transaction volume within a specific block without needing to load the entire block’s data.
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Parameters
blockNumber— the number of the block for which the transaction count is being queried, encoded as a hexadecimal string.
Response
result— the number of transactions in the specified block, encoded as a hexadecimal string. This includes all transactions that were part of the block at the time it was mined.
Use case
Theeth_getBlockTransactionCountByNumber method is useful for applications that monitor blockchain activity, such as wallets, block explorers, or analytics platforms. It can help these applications quickly gauge the level of activity within specific blocks or over a range of blocks.Last modified on June 22, 2026
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