Crypto Flexs
  • DIRECTORY
  • CRYPTO
    • ETHEREUM
    • BITCOIN
    • ALTCOIN
  • BLOCKCHAIN
  • EXCHANGE
  • TRADING
  • HACKING
  • SLOT
  • CASINO
  • SUBMIT
Crypto Flexs
  • DIRECTORY
  • CRYPTO
    • ETHEREUM
    • BITCOIN
    • ALTCOIN
  • BLOCKCHAIN
  • EXCHANGE
  • TRADING
  • HACKING
  • SLOT
  • CASINO
  • SUBMIT
Crypto Flexs
Home»BITCOIN NEWS»wallet – Create and sign transactions locally in Ruby
BITCOIN NEWS

wallet – Create and sign transactions locally in Ruby

By Crypto FlexsMay 13, 20242 Mins Read
Facebook Twitter Pinterest LinkedIn Tumblr Email
wallet – Create and sign transactions locally in Ruby
Share
Facebook Twitter LinkedIn Pinterest Email

So I’m using public node for Bitcoin node integration and previously I used sendtoaddress method to build, sign and broadcast transactions on the node. But now the sendtoaddress method is not allowed on public nodes due to privacy reasons due to private key disclosure, so we have to create, sign and broadcast the transaction locally offline. I’m using Ruby on Rails (openware/peatio). Here is my code so far: I am using the Bitcoinrb gem ( https://rubygems.org/gems/bitcoinrb ).

TESTNET_BASE_URL = "https://blockstream.info/testnet/api/address/".freeze
MAINNET_BASE_URL = "https://blockstream.info/api/address/".freeze



def create_transaction!(transaction, options = )
  env = @currency.dig(:key)&.include?('testnet') ? "testnet" : "mainnet"
  ::Bitcoin.chain_params=(env)
  key = ::Bitcoin::Key.new(priv_key: @wallet.fetch(:secret))
  url = @currency.dig(:key)&.include?('testnet') ? TESTNET_BASE_URL : MAINNET_BASE_URL
  response = URI.open(url + "#@wallet(:address)/utxo")
  utxos = JSON.parse(response.read)
  trx = build_trx(utxos.first, transaction.to_address, transaction.amount)
  trx = sign_transaction(trx, @wallet.fetch(:secret))


  signed_trx = client.json_rpc(:sendrawtransaction, "hexstring": trx.to_payload.bth, maxfeerate: 0)
  Rails.logger.warn  "-=-=-=sendrawtransaction-=-=- #signed_trx.inspect -=-=-=-=-=-=-=-=" 
  signed_trx
rescue Bitcoind::Client::Error => e 
  raise Peatio::Wallet::ClientError, e
end

def sign_transaction(tx, private_key)
  key = Bitcoin::Key.new(priv_key: private_key)
  tx.inputs.each_with_index do |input, index|
    script_pubkey = Bitcoin::Script.to_p2pkh(key.pubkey)
    input.script_sig = script_pubkey
  end
end

def build_trx(utxo, recipient_address, amount)
  tx = Bitcoin::Tx.new
  tx_in = Bitcoin::TxIn.new(out_point: Bitcoin::OutPoint.new(utxo("txid"), utxo("vout").to_i))
  tx.inputs << tx_in
  tx_out = Bitcoin::TxOut.new(value: amount.to_f, script_pubkey: Bitcoin::Script.to_p2pkh(recipient_address))
  tx.outputs << tx_out
  tx
end

However, the output of sendrawtrasnaction is:

"statusCode":403,"errorCode":"btc.blockchain.broadcast.error","message":"Unable to broadcast transaction.","cause":"Request failed with status code 500","dashboardLog":"https://dashboard.tatum.io/logs?id=663f683a798bb0f969fc3760"

Please let me know if I need to do it any other way. If I’m doing something wrong or missing something, I’d appreciate some help.

Share. Facebook Twitter Pinterest LinkedIn Tumblr Email

Related Posts

Cardano founder says Chainlink quotes ‘ridiculous price’ to them.

September 3, 2025

The US government posts GDP data on Bitcoin block chain.

August 28, 2025

Ether ETF is a comeback of $ 280 million, with bitcoin leaked stripes hit on the 5th.

August 22, 2025
Add A Comment

Comments are closed.

Recent Posts

Cardano founder says Chainlink quotes ‘ridiculous price’ to them.

September 3, 2025

Acurast launches ‘Staked Compute’ and challenges AWS, Azure and Google Cloud using the distributed smartphone network.

September 3, 2025

Solana-packee blockchain manually spreads

September 3, 2025

Bybit Card Launches In Europe With Unmatched 20% Cashback

September 3, 2025

GiftlyCard.com Recognized As Verified And Secure By Independent Review Sites

September 3, 2025

Embodying “Simple Mining, Smart Gains” For Effortless Crypto Accumulation

September 3, 2025

TOKEN2049 Singapore stops all records with the world’s largest Web3 event with 25,000 attendees in unprecedented demand.

September 3, 2025

Simultaneously Mine Dogecoin (DOGE), Ripple (XRP), And SOL

September 3, 2025

Simultaneously Mine Dogecoin (DOGE), Ripple (XRP), And SOL

September 3, 2025

Cango Inc. Announces August 2025 Bitcoin Production And Mining Operations Update

September 2, 2025

BitMine Immersion (BMNR) Announces Release Of August Investor Presentation And Latest Video Message From Tom Lee, Chairman

September 2, 2025

Crypto Flexs is a Professional Cryptocurrency News Platform. Here we will provide you only interesting content, which you will like very much. We’re dedicated to providing you the best of Cryptocurrency. We hope you enjoy our Cryptocurrency News as much as we enjoy offering them to you.

Contact Us : Partner(@)Cryptoflexs.com

Top Insights

Cardano founder says Chainlink quotes ‘ridiculous price’ to them.

September 3, 2025

Acurast launches ‘Staked Compute’ and challenges AWS, Azure and Google Cloud using the distributed smartphone network.

September 3, 2025

Solana-packee blockchain manually spreads

September 3, 2025
Most Popular

Cardano (ADA) Loses Top 10 Cryptocurrencies Spot Due to Tron’s Growth

August 19, 2024

Top 10 Tips for Every Bitcoin Multisig Beginner

April 27, 2024

Explains the future of fiat currency, digital dollar payments, and cryptocurrency in one word.

November 26, 2023
  • Home
  • About Us
  • Contact Us
  • Disclaimer
  • Privacy Policy
  • Terms and Conditions
© 2025 Crypto Flexs

Type above and press Enter to search. Press Esc to cancel.