Files
hash-wallet/cw_bitcoin
SerhiiandGitHub 7b2c9d5130 CW-1193-Add-batch-fetching-of-transactions-to-Electrum (#3104)
* support batched Electrum calls and processing for update transactions

* add timeout handling

* Revert "add timeout handling"

* adjust batch sizes and add chunk error handling

* fix merge conflict

* add fallback from batch fetching to single-call flow
2026-04-13 19:22:05 +02:00
..
2026-03-11 04:26:57 +02:00
2026-03-17 15:19:06 +01:00
2026-03-17 15:19:06 +01:00

cw_bitcoin

Bitcoin-family Electrum wallet implementation used by Cake Wallet (BTC, LTC and derivatives).

Features

  • Electrum client and wallet with address/UTXO management and snapshots.
  • Derivation via BIP‑39; receive/change chains with per-coin configs.
  • Create/sign/broadcast transactions; PSBT helpers and payjoin support.
  • Transaction history, priorities, and size-based fee calculations.
  • Hardware wallet support for BTC/LTC.

Getting started

Use the module via app services (see bitcoin_wallet_service.dart, litecoin_wallet_service.dart). Ensure Electrum nodes are configured for the target coin.

final wallet = await BitcoinWallet.create(
  mnemonic: '...',
  password: 'secret',
  walletInfo: walletInfo,
  unspentCoinsInfo: unspentCoinsBox,
  encryptionFileUtils: encryption,
);

Usage

Send BTC with medium priority:

final feeRate = wallet.feeRate(BitcoinTransactionPriority.medium);
final pending = await wallet.createTransaction(
  outputs: [BitcoinTransactionOutput(address: 'bc1...', amount: 50000)],
  feeRate: feeRate,
);
final txHash = await pending.commit();

See lib/ for wallet/services, PSBT, and payjoin utilities.