Class BtcTxOutputTemplate

Creates a new output template for use in a Bitcoin transaction.

Get the recipient address

Check if the output is malleable (can be modified)

Add amount to the output

Checks if the output is valid according to basic Bitcoin transaction rules.

This method performs several checks to ensure the output is properly formed:

1. For locked outputs:

   • Ensures that a non-zero amount is specified.
   • Throws an error if the amount is zero, as locked outputs must always have a valid amount.

2. For all output types:

   • Checks if the output has a non-zero amount (via hasAmount() method).
   • Verifies that the address is not an empty string.

Note: This method does not perform exhaustive validation. For more thorough checks, consider implementing a separate, comprehensive validation method.

Special considerations:

• OP_RETURN outputs might require different validation logic (not implemented here).
• Zero-amount outputs for certain special cases (like Ephemeral Anchors) are not considered valid by this basic check. Implement custom logic if needed for such cases.

Locks the output, preventing further modifications to its amount.

This method sets the malleability of the output to false. Once called, the output amount cannot be changed. If the output is already locked, this method has no effect.

Typical use cases include:

• Finalizing a transaction before signing
• Ensuring that certain outputs (like recipient amounts) are not accidentally modified

An amount must be specified before locking. This is to prevent locking an output with a zero amount, which could lead to invalid transactions.

Set a new amount for the output

Subtract amount from the output