Decoding Solana Program Data: Extracting the Transaction Amount

Solana is an open-source decentralized application (dApp) platform that uses Proof of Stake (PoS) consensus and a new Turing-complete programming language called Rust. One of Solana’s key features is its ability to store program data in a compressed, base58-encoded format. However, extracting this data and converting it into a usable transaction amount can be a challenge.

Problem:

When you run a Solana program on the mainnet, it stores the program state in a binary file. To access this data, you need to read the binary file and extract the relevant information. Unfortunately, Solana does not provide built-in functions or APIs to do this directly.

Solution: Using the solana-program library

Fortunately, there is an open-source library called solana-program that provides a simple interface for interacting with Solana programs. This library allows you to read and write program data in a compressed base58 encoded format.

Here is an example of how you can use this library to extract the transaction amount from a solana program:

Install dependencies

Before you begin, make sure you install the required dependencies:

pip install solana-program

Code example:

from solana.program import entry_point, program_id
@entry_point ("get_account")
def get_account(program_id, account_index):





Load the program data from a file
with open(f"{program_id}/data", "rb") as f:
program_data = f.read()

Decode the base58 encoded data
decoded_data = solana_program.decode_base64(program_data)

Extract the transaction amount (assuming it is stored in the last byte)
transaction_amount = date_decoded[-1]
return transaction_amount

Run the entry point when a new account is created or updated
entry_point("main", get_account)

How ​​it works:

• The get_account function accepts two arguments: program_id and account_index. These represent the program ID and the current account index.

• The function loads the program data from a file using open.

• The decoded data encoded in base58 is read into a variable decoded_data.

• We assume that the transaction amount is stored in the last byte of the program data. In this case, we extract it using decoded_data[-1].

• Finally, we return the extracted transaction amount.

Tip:

• Make sure to adjust the program_id and account_index values ​​according to your Solana configuration.

• This example assumes a simple program that stores the transaction amount in the last byte of the data. Depending on your specific use case, you may need to modify this approach.

• Please note that this is a simplified example and you should consider additional error handling and security measures when working with sensitive program data.

By following these steps, you can successfully extract the transaction amount from a Solana program using the solana-program library.