One device · Storage only

Engrave 0 holds
your keys.
That's the whole job.

A hardware wallet designed to store the private keys of cryptocurrencies, NFTs, and other crypto-based assets — offline, in your hands. There is no exchange here, no trading desk, no swap button. Just storage.

See Engrave 0 — $149 How it works
OFFLINE KEYS: SECURED NO RADIO ENGRAVE 0 BKS-001 · Air-gapped · Secure element
✓ Stores keys

Generates and holds private keys offline, inside a secure element that never exposes them.

✕ No buying or selling

We don't sell crypto. We sell one piece of hardware that protects it.

✕ No exchange or trading

No swaps, no on-ramp, no brokerage — none of it exists on this site or in the device.

✕ No custody

We never see, hold, or recover your keys, seed phrase, or funds. Only you can.

How it works

Three steps, then it stays offline

Engrave 0 is meant to be set up once and left alone. Order matters here — each step depends on the one before it.

01 — Generate

Keys are born on the device

The secure element creates your private keys internally. They are never typed into a computer, never transmitted, and never leave the chip.

02 — Engrave

Stamp the recovery phrase

Your 24-word phrase goes onto the included titanium plate with the punch kit. Paper burns and fades; the plate doesn't.

03 — Sign

Approve by QR, never by cable

Transactions are scanned in and signed on-screen, then scanned back out. No Wi-Fi, no Bluetooth, no USB data path exists.

Specification

Engrave 0, in full

Connectivity
None. Air-gapped — QR camera and display only.
Secure element
EAL6+ certified chip, on-device key generation
Display
1.9" monochrome, sunlight readable
Recovery
BIP39 24-word phrase, optional passphrase
Assets supported
Bitcoin, Ethereum & EVM chains, NFTs, ERC-20 tokens
In the box
Device, titanium plate, punch kit, tamper seal, guide
Body
Anodized aluminum shell, tamper-evident seam
Power
Replaceable coin cell — no charging, no cable
Firmware
Open source, reproducible builds, signed updates
Warranty
2 years on hardware defects
Also in the shop

Two things that aren't a wallet

Cotton and ceramic. Same opinion about keys.

BKS-M01

"Not Your Keys" Tee

Heavyweight cotton, small chest print, BKS serial tag on the sleeve. Black or graphite, XS–XXL.

$28View
BKS-M02

Cold Storage Mug

12oz ceramic, "my keys never touched the internet" wrapped around the rim. Dishwasher safe.

$18View
Questions

What people ask first

Can I buy crypto through BitKeyShop?

No. We sell hardware only. BitKeyShop does not offer purchasing, selling, exchanging, trading, staking, or lending of any cryptocurrency, NFT, or digital asset, and there is no integrated exchange in the device or in this site.

Do you ever have access to my keys or funds?

Never. Keys are generated on the device and stay there. We don't store seed phrases, we can't recover them, and we can't move anything held in a wallet you control. If you lose both the device and the engraved plate, no one — including us — can restore access.

What does "air-gapped" actually mean here?

The device has no Wi-Fi, no Bluetooth, no cellular radio, and no USB data lines. It communicates only by showing and scanning QR codes, so there is no wired or wireless path an attacker can reach across.

Why a titanium plate instead of paper?

Paper is the weakest part of most self-custody setups — it burns, soaks, fades, and gets thrown out. A stamped titanium plate survives fire and flood and stays readable for decades.

Do you ship outside the United States?

Yes. Orders ship worldwide in plain, unbranded packaging to reduce the risk of interception. See shipping & returns for timelines and duties.

One device. One purpose.

Engrave 0 ships with the titanium plate and punch kit included.