Here is an article on how to get transaction signatures when using Solana’s send_and_confirm_transactions_in_parallel():

Getting Transaction Signatures with send_and_confirm_transactions_in_parallel()

In your recent posts, you successfully implemented send_and_confirm_transactions_in_parallel() using the TPU client. However, when you call this function, it does not automatically generate transaction signatures for each transaction in the batch.

If you need to get the transaction signature(s) after sending and confirming transactions in parallel, you need to make sure that your TPU client is configured correctly and that you handle any errors or exceptions correctly.

The problem with send_and_confirm_transactions_in_parallel()

send_and_confirm_transactions_in_parallel() is an asynchronous function that sends multiple transactions at the same time using the TPUClient. While this approach can be effective, it does not automatically generate transaction signatures. Instead, each transaction will have its own signature when it is submitted and confirmed.

Solution: Manually Obtaining Transaction Signatures

To manually obtain transaction signatures, you will need to:

• Submit each transaction individually using TPUClient.

• Wait for each transaction to be confirmed before generating a signature.

• Store or print the generated signatures if necessary.

Here is an example of how you can implement this in Python:

from solana.publickey import PublicKey
import time
def get_signature(tx_id, account_key):









Send the transaction using TPUClient and wait for it to confirm
client = TPUClient()
tx_response = client.send_and_confirm_transactions_in_parallel(
[
{"id": tx_id, "account_key": account_key},
],
timeout=60 
Wait up to 1 minute before generating a signature
)
if not tx_response:
return None

Generate the transaction signature
signature = client.get_transaction_signature(tx_id)

Returns the generated signature as a string
return str(signature)

Example usage:
tx_id = "some_tx_id"
account_key = "some_account_key"
signature = get_signature(tx_id, account_key)
print(f"Transaction signature for {tx_id}: {signature}")

Tips and Variations

• Make sure to handle any exceptions that may occur during transaction processing.

• If you need to generate signatures in bulk, consider using a loop to send transactions and wait for confirmations before generating signatures.

• You can also use the TPUClient.get_transaction_signatures() method to retrieve the generated signatures directly from the server.

By following these steps and tips, you should be able to get transaction signatures when you use send_and_confirm_transactions_in_parallel() with your Solana application.