CREATE A BITCOIN TRANSACTION

ENTER UP TO SEVEN TXIDS WITH UNSPENT OUTPUTS
	Enter one txid for each UTXO to serve as inputs funds to the transaction.
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Previous transactions that contain unspent transaction outputs (UTXOs) are used to fund a new transaction. Private keys for each UTXO are needed to sign the raw transaction. This can be done online here after additional transaction details are added, or for higher security (recommended), the raw transaction can be signed using your own bitcoin client or related software tools.

BITCOIN core command line: ./bitcoin-cli signrawtransaction 'rawtransactionhex' null 'privatekey'

https://coinb.in/#sign A Open Source Browser Based Bitcoin Wallet.
https://libbitcoin.info/ A C++ Bitcoin toolkit library.
https://bitkey.io/ Bitcoin Swiss Army Knife in a verifiably secure self-contained Live CD/USB.
https://../create-sign-bitcoin-transactions-golang

Already have a raw bitcoin transaction ready to broadcast? Head over to the bitcoin node.