bitcoin-infrastructure-sparrow
Sparrow Wallet: power-user desktop wallet for Bitcoin. PSBT-first, HW wallet support, multisig coordination, CoinJoin (Whirlpool fork), PayJoin, BIP47. USE WHEN: power-user wallet workflows, evaluating Sparrow vs Specter / Electrum.
What this skill does
# Sparrow Wallet Java desktop Bitcoin wallet by Craig Raw. Power-user oriented: detailed UTXO control, PSBT-first, multisig, HW wallet support. Repo: `github.com/sparrowwallet/sparrow`. ## Features - **Single-sig + multi-sig** wallets. - **HW wallet support** via HWI: Trezor, Ledger, Coldcard, BitBox02, Jade, Passport, Keystone, SeedSigner, Krux, Specter DIY. - **Airgap** via animated QR (BCUR), microSD. - **Multiple backends**: Bitcoin Core, Electrum (electrs/Fulcrum/ ElectrumX), Bitcoin Knots. - **PSBT** comprehensive editor. - **PayJoin** (BIP78). - **BIP47 PayNyms** support. - **CoinJoin** (Whirlpool fork — limited since Samourai shutdown). - **Tor** via SOCKS5 proxy. ## Detailed UI - **Coin control**: explicit input selection per tx. - **Transaction inspector**: full PSBT, scripts, witness. - **Address verification**: per-device confirmation flow. - **Wallet backups**: encrypted .mnemonic / descriptor exports. ## Multisig Supports cross-vendor multisig with descriptor-based config. Excellent UX for HW wallet signing rounds. ## Setup Download installer for Mac/Windows/Linux. Configure Bitcoin Core or Electrum server in settings. Optionally enable Tor. ## Compared | Aspect | Sparrow | Specter Desktop | Electrum | |--------|---------|------------------|----------| | Language | Java | Python + Vue | Python | | HW wallet support | best | rich | partial | | PSBT detail | richest | rich | basic | | Multi-sig UX | top | top | OK | | Mobile | no | no | yes (legacy) | | Privacy features | strong | strong | basic | ## Use cases - **Power users** with mixed HW wallet setups. - **Multi-sig custody**. - **Privacy-conscious** workflows (PayJoin, PayNyms, Tor). ## Common issues - **Java JVM**: requires Java 17+; bundled installer recommended. - **CoinJoin since Samourai shutdown**: Whirlpool fork has limited liquidity; some users moved to Wasabi. - **Tor connection**: ensure Sparrow's Tor proxy port matches your Tor instance. ## See also - [specter-desktop/SKILL.md](../specter-desktop/SKILL.md) - [electrum-wallet/SKILL.md](../electrum-wallet/SKILL.md) - [../hardware/hwi/SKILL.md](../../hardware/hwi/SKILL.md) - [../privacy/coinjoin/SKILL.md](../../privacy/coinjoin/SKILL.md) - [../privacy/payjoin/SKILL.md](../../privacy/payjoin/SKILL.md)
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