Clench Wallet

Clench Wallet 암호화폐 및 거래 앱 대상 Android 설명

Clench is a Bitcoin-only, non-custodial Bitcoin wallet for Android. It uses Bitcoin Dev Kit and stores wallet data locally on the device.

Wallet features:

• Create single-sig and multisig wallets.
• Import watch-only wallets from descriptors.
• Create or restore BIP-39 seed phrase wallets with an optional passphrase.
• Use native SegWit, nested SegWit, legacy, and Taproot script types.
• Connect to Electrum servers, including personal servers and Tor SOCKS5 routes.
• Use coin control, UTXO freezing, labels, batch payments, RBF fee bumping, CPFP, cancel replacement attempts, raw transaction import, and sweep flows.
• Run node diagnostics for Electrum route, Tor mode, TLS pinning, server version, and tip height.

Hardware-wallet features:

• Exchange PSBTs by animated QR, BBQr, an intentional NFC tap, microSD/user-selected file import, or signed-return import where supported.
• Clench does not communicate with signing devices over USB or Bluetooth. A signer may still use USB for power.
• Work with QR-based signers such as SeedSigner, Keystone, Foundation Passport, and Blockstream Jade.
• Work with Coldcard Q, Coldcard Mk4, and Coldcard Mk5 transfer paths.
• Check Tapsigner NFC Tap Protocol status.
• Sweep SATSCARD active slots with certificate verification and explicit CVC-authenticated unseal confirmation.
• TAPSIGNER setup, verification, xpub import, multisig policy import, and encrypted backup are available; direct payment signing is a temporary software limitation.
• Require explicit broadcast confirmation after hardware-wallet signing.

Security and privacy features:

• Encrypt keys with Android Keystore.
• Encrypt the local wallet database with SQLCipher.
• Protect wallet access with PIN and biometric authentication where available.
• Validate signed PSBTs and finalized transactions before broadcast.
• Avoid analytics, advertising SDKs, Firebase, Google Play Services, crash reporting services, and account sign-in.

Network use is limited to wallet sync and optional user-triggered fee or price data lookups.

Clench is free software under the MIT License.