executing-plans
executing-plans
Use when executing an implementation plan in the current session as the implementer yourself — your human partner chose inline execution, or no subagent tool is available
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bitcoin-hardware-keystone
bitcoin-hardware-keystoneKeystone 3 Pro: airgap HW wallet with QR + microSD, color touchscreen, multi-currency support, fingerprint auth. USE WHEN: integrating Keystone, evaluating mid-priced HW options.
Independent GitHub snapshot · Automated classification · Original documentation governs
Documentation de la Skill
GitHubname: bitcoin-hardware-keystone description: | Keystone 3 Pro: airgap HW wallet with QR + microSD, color touchscreen, multi-currency support, fingerprint auth. USE WHEN: integrating Keystone, evaluating mid-priced HW options. allowed-tools: Read, Grep, Glob
Keystone 3 Pro
QR-based airgap hardware wallet by Keystone (formerly Cobo Vault). The product name is "Keystone 3 Pro", not "Keystone Pro 3". As of September 2026 the line is: Keystone 3 Pro (plus co-branded and NFT-customized variants of the same hardware), the Keystone Tablet / Tablet Plus steel seed backups, and ForgeBox, a build-it-yourself developer board.
Hardware
- 4-inch color touchscreen.
- Battery-powered.
- Three secure element chips; seed phrases and fingerprint data live in separate chips.
- PCI-grade anti-tamper: disassembly is detected and wipes the device (self-destruct), so the secure elements are not a user-removable module.
- Fingerprint sensor.
- Camera for QR scanning.
- microSD slot.
Connectivity
- No USB / Bluetooth for signing. QR + microSD only.
- USB only for charging + firmware updates.
Firmware editions
Same hardware, three firmware builds, cross-upgradable at or above the installed version. Versions as of September 2026:
| Edition | Latest | Scope |
|---|---|---|
| Multi-coin | 3.0.8 (Sep 2026) | BTC + 5,500+ assets |
| Bitcoin-only | 3.0.4-BTC (Aug 2026) | Bitcoin only |
| Cypherpunk | 3.0.4-CYPHERPUNK (Aug 2026) | BTC, ZEC, XMR |
Devices ship on multi-coin; flash Bitcoin-only to drop the altcoin parsers.
Currencies
Multi-coin firmware: Bitcoin, Ethereum, Cosmos, Solana, etc. Bitcoin-focused features:
- BIP39 seed.
- BIP44/49/84/86.
- Multisig support.
- PSBT signing.
Backup
- 24-word seed.
- Encrypted microSD backup.
- Optional Shamir Backup (SLIP-39).
Compatible wallets
- Sparrow.
- BlueWallet.
- Nunchuk.
- BitMask.
- Keystone Nexus, the vendor companion app (the "Companion app"
branding was retired;
keyst.one/companion-appnow redirects to the home page, as of September 2026).
Compared to other airgap options
| Aspect | Keystone 3 Pro | Coldcard Q | Passport |
|---|---|---|---|
| Touchscreen | Yes | Yes | Yes |
| Multi-coin | Yes (BTC-only build exists) | BTC only | BTC only |
| Fingerprint | Yes | No | No |
| Price | Mid | High | High |
| Open-source firmware | Partial | Partial | Yes |
Limitations
- Multi-coin = more attack surface than BTC-only; mitigated by flashing the Bitcoin-only firmware edition.
- Open-source partial — some components closed.