Bitcoin: Why does my PSBT’s input script not have a pub key?

The mystery of the public key that misses in its PSBT

As a Bitcoin developer or user, you are probably familiar with the concept of public keys and private keys. In this article, we will deepen why your PSBT (public script transmission) may be losing a public key.

Understanding PSBTs and private keys

A PSBT is a script that contains information on how to transmit a bitcoin transaction on the network. It is essentially a coded message that describes which action to take when transaction transaction. Each PSBT line represents a specific operation, such as “defining recipient” or “Create Signed Exit”.

Private keys, on the other hand, are used to check and sign Bitcoin transactions. They are generated using the digital signing algorithm of the elliptical curve (ECDSA) with a specific public key.

Why may your PSBT be losing a public key?

There are several reasons why your PSBT may be losing a public key:

• Private Key Failure : If you do not have a corresponding private key for one of the operations on your PSBT, Bitcoin will still try to use it. However, this may lead to problems trying to transmit transactions.

• Use of Incorrect Private Key

  : If you are using the wrong switch for an operation or omission to specify which private key is being used, Bitcoin may not be able to generate the scripts needed for transmission transactions.

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How to identify and correct the problem

To solve this problem, follow these steps:

• Check your private keys ECDSA

  : Make sure you have the correct private key for each operation on your PSBT. If you are not sure where to find your private keys or how to generate new ones, consult your wallet documentation or contact a support expert.

• Check your use of public key : Make sure you have specified the correct private key for each operation and that it is not being omitted on the PSBT.

Example of how your PSBT may seem

Here is an example of how your PSBT can be:

`PSBT

0101020304A12F34D5E6C7B8A9C

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