Solana Transaction Introspection

Deserialize signed Solana transactions into instructions, signers and blockhash from Ed25519Instruction data for use in payment channels and other L2 settlement scenarios.

Features

• Deserialize Transactions onchain: Deserialize Ed25519Instruction data into a SignedTransaction
• Return signers: List signers of Ed25519Instruction to validate in your program

Data Structures

SignedTransaction

A struct representing the signed transaction, containing the following fields:

• header: A SignedTransactionHeader including the number of signers and readonly accounts.
• signers: A vector of unique public keys representing the signers of the transaction.
• recent_blockhash: The blockhash at the time the transaction was created.
• instructions: A vector of SignedTransactionInstruction structs representing the transaction's instructions.

SignedTransactionHeader

A struct that holds metadata about the transaction:

• signers: Number of writable signers.
• readonly_signers: Number of readonly signers.
• readonly: Number of readonly accounts.

SignedTransactionInstruction

A struct representing a single instruction in the transaction:

• program_id: The program ID associated with this instruction.
• accounts: A vector of public keys representing the accounts involved in the instruction.
• data: A vector of bytes representing the instruction data.

Usage

To deserialize a signed transaction from bytes:

use solana_program::pubkey;
use solana_signer_transaction::SignedTransaction;

fn main() {
    let transaction_bytes = [/* Ed25519Instruction data */];
    let transaction = SignedTransaction::from_bytes(&transaction_bytes).unwrap();

    // Access transaction components
    println!("{:?}", transaction.signers);
    println!("{:?}", transaction.recent_blockhash);
    println!("{:?}", transaction.instructions);
}

Testing

Unit tests are included to verify the correctness of deserialization.

Running Tests

cargo test

License

This project is licensed under the MIT License. See the LICENSE file for details.