Crate rustywallet_tx 

rustywallet-tx

Bitcoin transaction building, signing, and serialization.

Features

• Build transactions with multiple inputs and outputs
• Automatic coin selection
• Fee calculation (vsize-based)
• Sign P2PKH and P2WPKH inputs
• Serialize transactions for broadcasting

Quick Start

use rustywallet_tx::prelude::*;
use rustywallet_keys::prelude::PrivateKey;

// Create a UTXO
let utxo = Utxo {
    txid: [0u8; 32],
    vout: 0,
    value: 100_000,
    script_pubkey: vec![0x00, 0x14, /* ... 20 bytes ... */],
    address: "bc1q...".to_string(),
};

// Build transaction
let unsigned = TxBuilder::new()
    .add_input(utxo)
    .add_output(50_000, vec![/* scriptPubKey */])
    .set_fee_rate(10) // 10 sat/vB
    .build()
    .unwrap();

println!("Fee: {} sats", unsigned.fee());

Signing

use rustywallet_tx::{sign_p2wpkh, Transaction};
use rustywallet_keys::prelude::PrivateKey;

let private_key = PrivateKey::random();
let mut tx = unsigned.tx;

// Sign P2WPKH input
sign_p2wpkh(&mut tx, 0, 100_000, &private_key).unwrap();

// Serialize for broadcast
let hex = tx.to_hex();

Re-exports

pub use error::TxError;

pub use error::Result;

pub use types::Transaction;

pub use types::TxInput;

pub use types::TxOutput;

pub use types::Utxo;

pub use fee::estimate_vsize;

pub use fee::calculate_fee;

pub use fee::estimate_fee;

pub use fee::is_dust;

pub use script::build_p2pkh_script;

pub use script::build_p2wpkh_script;

pub use script::build_p2tr_script;

pub use script::hash160;

pub use script::is_p2pkh;

pub use script::is_p2wpkh;

pub use script::is_p2tr;

pub use coin_selection::select_coins;

pub use sighash::sighash_legacy;

pub use sighash::sighash_segwit;

pub use sighash::sighash_type;

pub use builder::TxBuilder;

pub use builder::UnsignedTx;

pub use builder::InputInfo;

pub use signing::sign_p2pkh;

pub use signing::sign_p2wpkh;

pub use signing::sign_all;

Modules

builder

Transaction builder.

coin_selection

Coin selection algorithms.

error

Error types for transaction operations.

fee

Fee calculation utilities.

prelude

Prelude module for convenient imports.

script

Script building utilities.

sighash

Sighash calculation for transaction signing.

signing

Transaction signing.

types

Core transaction types.