Coconut Vault: Bitcoin Signer
Nonce Lab Inc.
Coconut Vault — Offline Bitcoin Signer for Complete Self-Custody
Coconut Vault keeps your private keys secure in a fully air-gapped environment.
Sign PSBTs (Partially Signed Bitcoin Transactions) without any internet connection.
Designed for those who take Bitcoin security seriously, Coconut Vault uses hardware-level protection (HSM / Secure Enclave) to isolate your private keys from the OS and other apps.
Key Features
• QR-based PSBT signing (fully offline)
• Hardware security module protection for private keys
• Compatible with Coconut, Sparrow, BlueWallet, and Nunchuk watch-only wallets
• Auto lock & memory zeroize when network is detected
• Selectable operation modes (Signing-only / Secure storage)
Your keys. Your vault. Your Bitcoin — Coconut Vault.
Coconut Vault keeps your private keys secure in a fully air-gapped environment.
Sign PSBTs (Partially Signed Bitcoin Transactions) without any internet connection.
Designed for those who take Bitcoin security seriously, Coconut Vault uses hardware-level protection (HSM / Secure Enclave) to isolate your private keys from the OS and other apps.
Key Features
• QR-based PSBT signing (fully offline)
• Hardware security module protection for private keys
• Compatible with Coconut, Sparrow, BlueWallet, and Nunchuk watch-only wallets
• Auto lock & memory zeroize when network is detected
• Selectable operation modes (Signing-only / Secure storage)
Your keys. Your vault. Your Bitcoin — Coconut Vault.
Developer email
hello@noncelab.com
Developer website
https://www.coconut.onlReleased
Oct 21, 2025
Current version
2.1.2
Android version
8.0
Screenshots
