Bitcoin TX Builder

What it does

• •Takes one or more UTXOs (txid, vout, value, private key) as inputs.
• •Takes one or more destination addresses and amounts as outputs.
• •Signs every input with the corresponding private key and finalizes the transaction.
• •Outputs the raw signed transaction hex, ready to broadcast.

Use cases

• •Construct a transaction manually without a full wallet application.
• •Understand how inputs, outputs, and signatures come together in a raw Bitcoin transaction.
• •Test transaction construction on testnet before using mainnet funds.