Keystone Promo Code & Bonuses August 2026
The air-gapped signer power users pair with MetaMask
- Founded
- 2018
- Headquarters
- Hong Kong
- Official site
- keyst.one
- Codes checked
- 2026-08-10
Keystone (formerly Cobo Vault) carved its niche as the signer of choice for DeFi power users: a four-inch touchscreen shows fully decoded transaction data, and native integrations with MetaMask, Rabby and major multisig setups make it the air-gapped half of a hot-wallet workflow.
Its store runs launch discounts, refer-a-friend credits and periodic codes through partner communities; the Keystone 3 Pro with triple secure-element architecture is the current flagship.
Current Keystone deals & programs
Partner community codes
Codes distributed through DeFi communities and reviewers trim the flagship's price periodically.
Referral credits
Existing owners share links granting store credit to both sides on new device purchases.
How to redeem a Keystone offer
Order from keyst.one directly
Add the code in the checkout discount field
Confirm the adjusted price and complete payment
Verify the anti-tamper packaging and initialize offline
Keystone: what readers ask
Why do DeFi users prefer Keystone?
Blind signing is the biggest DeFi attack vector; Keystone's screen decodes contract calls so you see what a transaction actually does before approving it from cold storage.
Does Keystone work as a MetaMask hardware wallet?
Yes — pair via QR codes; MetaMask composes transactions, Keystone signs them air-gapped. Rabby and several multisig platforms integrate the same way.
What does the third secure element add?
The 3 Pro splits key operations across three certified chips from different vendors, so compromising one supplier's silicon cannot expose the seed.
Are older Keystone models still supported?
Firmware support continues for prior generations, which also see clearance pricing when new hardware ships — a solid value entry point.