Send transaction

POST

wss://btc-testnet.nownodes.io/wss/{api_key}

Calls the sendTransaction method over a WebSocket connection.

Connection URL:

Copied!

wss://btc-testnet.nownodes.io/wss/{{api_key}}

Open the connection, then send the message below as a text frame.

Example:

Copied!

wscat -c 'wss://btc-testnet.nownodes.io/wss/YOUR_API_KEY'
> {"id":"13","method":"sendTransaction","params":{"hex":"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"}}

A transaction the backend rejects returns an error object instead, for example {"id":"13","data":{"error":{"message":"-22: TX decode failed. Make sure the tx has at least one input."}}}.

Body

application/json

object

Parameters

api_keystringrequiredpath

Your NOWNodes API key.

Response

200OK

A successful response.

Send transaction

curl -X POST 'wss://btc-testnet.nownodes.io/wss/{api_key}' \
  -H 'Content-Type: application/json' \
  -d '{
    "id": "13",
    "method": "sendTransaction",
    "params": {
      "hex": "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"
    }
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("wss://btc-testnet.nownodes.io/wss/{api_key}");
const result = await provider.send("sendTransaction", {
  "hex": "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"
});
console.log(result);

require 'eth'
require 'json'
require 'net/http'

uri = URI('wss://btc-testnet.nownodes.io/wss/{api_key}')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "sendTransaction",
  "params": {
    "hex": "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"
  },
  "id": 1
}'

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

puts JSON.parse(response.body)

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("wss://btc-testnet.nownodes.io/wss/{api_key}"))
response = w3.provider.make_request("sendTransaction", {
  "hex": "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"
})
print(response)

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("wss://btc-testnet.nownodes.io/wss/{api_key}"),
});

const result = await client.request({
  method: "sendTransaction",
  params: {
  "hex": "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"
},
});

console.log(result);

const endpoint = "wss://btc-testnet.nownodes.io/wss/{api_key}";
const apiKey = "YOUR_API_KEY";

async function nownodesRequest(payload) {
  const response = await fetch(endpoint, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "api-key": apiKey,
    },
    body: JSON.stringify(payload),
  });

  return response.json();
}

const result = await nownodesRequest({ jsonrpc: "2.0", method: "sendTransaction", params: {
  "hex": "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"
}, id: 1 });
console.log(result);

const response = await fetch('wss://btc-testnet.nownodes.io/wss/{api_key}', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "id": "13",
      "method": "sendTransaction",
      "params": {
        "hex": "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"
      }
    }),
});

const data = await response.json();

import requests

payload = {
  "id": "13",
  "method": "sendTransaction",
  "params": {
    "hex": "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"
  }
}

response = requests.post('wss://btc-testnet.nownodes.io/wss/{api_key}', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('wss://btc-testnet.nownodes.io/wss/{api_key}')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "id": "13",
    "method": "sendTransaction",
    "params": {
      "hex": "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"
    }
  }'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

Request Body

{
  "id": "13",
  "method": "sendTransaction",
  "params": {
    "hex": "01000000000102d0f61583a3df6814cc3a04265f8704d6d988a3e07908ba4a8abde28af28815e20000000000ffffffff7f7a0402e92791c8309a780140f02b9026393c2a1979cc5903185a36527e8bc60000000000ffffffff0188130000000000001976a914efd22fbfea12156ba1e52fbe419c98b208cd649288ac02473044022068326ae5035ac154c42453b36cee662c4baac7e01f09c3eda57d341d815b4b110220767fc33fef7f63bc6191dff44efaa077f48602bc8490a1a726cf2eecc7b1cbd901210383ef818e79781019cd7cf5b04553448fca672c710fef26421fc0f1ec1f14d97c02483045022100d80206dbc52b740d14dc920d30844c8b886ffb220595a7e498ac39ef9fc77da902205e7b336e2a8c30bf3e6afae802f88d18cb9eed40f538f6efecc9e0d849405c30012102dc1612eec3528b44d6dd24a6f46b07c2318a6c90cfe8912fe27b42cb87cbddfd00000000"
  }
}

200

{
  "id": "13",
  "data": {
    "result": "e9b286c573ab64edf1446d166c45ef76659fb1ecd1d13298cf07b4d09fc06d17"
  }
}