Crate lifiswap_btc 

LiFi SDK - Bitcoin chain provider.

This crate provides a Bitcoin-specific implementation of the [lifiswap::Provider] trait for UTXO-based Bitcoin transactions using PSBT (BIP-174) signing.

Architecture

• BtcProvider — implements [lifiswap::Provider] for Bitcoin (ChainType::UTXO)
• BtcSigner — trait abstracting PSBT signing (local keypair, hardware wallet, etc.)
• KeypairSigner — local private-key based signer for server/CLI usage
• BlockchainApi — REST API client for mempool.space with multi-backend fallback

Example

use bitcoin::key::PrivateKey;
use bitcoin::Network;
use lifiswap_btc::{BtcProvider, KeypairSigner};

let key = PrivateKey::generate(Network::Bitcoin);
let signer = KeypairSigner::new(key, Network::Bitcoin);
let provider = BtcProvider::new(signer);

Structs

BlockchainApi

Bitcoin blockchain REST API client with multi-backend fallback.

BtcProvider

Bitcoin chain provider using the bitcoin crate and public REST APIs.

KeypairSigner

Local private-key based Bitcoin signer.

Traits

BtcSigner

Abstracts Bitcoin PSBT signing, allowing different backends (local keypair, hardware wallet, remote signer, etc.).