How It Works

Your Ballet card is a complete cold storage wallet. No setup. No seed phrases. The private key is yours — and only yours — from the very first moment.

How Ballet cold storage worksHow Ballet cold storage works

01 · The Card

Three components. One complete wallet.

Deposit Address
1

Deposit Address

Printed on the front as a QR code and in text format. Scan with any wallet or exchange to send crypto to cold storage. Nothing to install — just scan and send.

Private Key Entropy
2

Private Key Entropy

Printed on a yellow sticker in QR code and text format, sealed beneath a tamper-evident silver sticker. Only needs to be revealed when sending assets for the first time.

Passphrase Entropy
3

Passphrase Entropy

Laser-etched onto the card and concealed under a scratch-off strip. Only needs to be revealed when sending assets for the first time.

02 · Key Assembly

Two keys become one — in your hands.

Private Key
Entropy
+
Passphrase
Entropy
BIP38
Decryption
BIP38
Decryption
Full Private Key
Generated on your device, for the first and only time. Used to sign transactions when you send crypto out.

03 · The Manufacturing Process

Two factories. Two continents. Ballet never held your private key.

Ballet's patented Two-Factor Key Generation (2FKG) process ensures that no single person — not even a Ballet employee — can ever access your complete private key. The two components are generated by separate teams in separate countries, and no individual can hold both at once.

The US facility generates the passphrase on an air-gapped, offline computer and passes only an intermediate code — never the passphrase itself — to the China facility. The China facility uses that code to produce the encrypted private key entropy and derive the deposit address, without ever seeing the passphrase. Products are then shipped back to the US, where the passphrase is laser-etched onto the card and covered with a scratch-off strip. All digital data is deleted and overwritten immediately after.

The private key is never created at the factory. It only comes into existence when you open the card and combine both components yourself — on your device, for the first and only time.

Learn More
US Facility
Passphrase Entropy
China Facility
Private Key Entropy

The simplest way to own crypto, securely.

No seed phrases. No setup. No compromises. Open the box and start receiving crypto.