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Project Bitcoin

Keystone 3

Keystone 3 hardware signer firmware releases.

Project pageLatest release
223 Stars
87 Forks
6
Releases tracked
GitHub releases
Source type
16 days
Avg cadence
May 2026
First tracked
15d ago
Latest

Release history

Bitcoin release Aug 12, 2026

Keystone 3 3.0.4

Keystone 3 adds Solana CLI support and Lace Wallet integration for BTC/ADA management, optimizes transaction parsing across firmwares
Bitcoin release Jul 27, 2026

Keystone 3 3.0.2

Keystone 3 Cypherpunk edition adds Zcash Ironwood upgrade support and batch PCZT signing, irreversible from other firmware variants
Bitcoin release Jul 21, 2026

Keystone 3 3.0.0

Keystone 3 3.0.0 improves passcode recovery flow, strengthens security policies, and optimizes AR calculations across Web3, BTC-only, and Cypherpunk firmware variants
Bitcoin release Jun 29, 2026

Keystone 3 2.5.0

Keystone 3 improves entropy validation and passcode verification across firmware variants, adds ZEC management via Vizor for Cypherpunk edition
Bitcoin release Jun 15, 2026

Keystone 3 2.4.6

Keystone 3 2.4.6 adds Babylon derive context hash support for Bitcoin staking workflows
Bitcoin release May 26, 2026

Keystone 3 2.4.4

Keystone 3 2.4.4 adds Zcash support with SLIP39 33-word Shamir Backup and fixes device verification screen loading issues