Signing Bitcoin Transactions with Bitcoind IBitcoin-cli '

As you have discovered, the creation and signing of Bitcoin transactions withBitcoindI Bitcoin-cli ‘may be a bit ticklish. In this article, we will explore the differences between these two tools and provide detailed instructions on how to sign Bitcoin transactions using these APIs only.

Why doesn’t he work?

Before you dive into the solution, we briefly talk about why signing transactions could fail with Signrawtransation. The main reasons are:

• Private key format : a private key used to sign transactions in bitcoin-cli 'must be in a specific format, which is different from the format that expects API Createrawtransation.

• Key format :Bitcoindexpects your private keys in PEM format, while API Createrawtransationrequires them in PGP format.

Signing transactions withbitcoin-cli ‘

To sign Bitcoin transactions using only bitcoin-cli ', you will need:

• Create a new wallet: usebitcoin-cli ‘to create a new wallet.

• View your private key: Turn your private key from the PEM Format to the PGP format using -W , for example:

`Bash

Bitcoin -Cli -w /path/to/your/Key.pem

`

4

• Sign the transaction: useSignrawtransationto sign the transaction.

Here's an example of a code clip showing how to sign a transaction using onlybitcoin-cli ‘:

`Bash

Create a new wallet

Bitcoin -Cli -w /path/to/your/Key.pem Createaddress

Veline your private key

Bitcoin -Cli -w /path/to/your/Key.pem -c Privatekey.pgp

Create a transaction with a newly created wallet

Transaction = Bitcoin -cl -w /path/to/your/Key.pem Createrawtransation 0x1234567890ABCDEF

Sign the transaction

Transactionsig = Bitcoin -Cli -w /Path/to/your/KEY.PEM SIGNRAWTRANSACTION “Your_Transation_hash_here”

`

Signing transactions withBitcoind

To sign Bitcoin transactions using onlybitcoind, you will need:

• Create a new wallet: usebitcoindto create a new wallet.

• View your private key: Turn your private key from the PEM Format to the PGP format using-W , for example:

Bash

Bitcoind -Q -w /path/to/your/Key.pem Imprisonkey

`

4

• Sign the transaction: useSIGNTRANSACTIONto sign the transaction.

Here's an example of a code clip showing how to sign a transaction using onlybitcoind:

Bash

Create a new wallet

Bitcoind -Q -w /path/to/your/Key.pem Imprisonkey

Create a transaction with a newly created wallet

Transaction = Bitcoind -Q Createrawtransation 0x1234567890ABCDEF

Sign the transaction

Transactigsig = Bitcoind -Q Signtransation “Your_transation_hash_here”

`

Conclusion

The signature of Bitcoin transactions withbitcoindI Bitcoin-cli` can be achieved with only these APIs, but requires a certain format of a private key and a key format. Following the steps listed in this article, you should now have the necessary knowledge to create and sign Bitcoin transactions using any tools.

Remember that you are always safe to use your own private keys and follow the best practices for their handling.

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