Chaindeck is a deck of square cards used for storing secret information. You arrange the cards in a specific way before writing the secret on the sides of the deck. Shuffling the cards will scramble the information, making it not possible to read. You can rearrange the cards any time to be able to read the secret again.

Chaindeck offers a unique solution to a common problem: how to securely store your seed phrase. While there are other options available, such as digital storage or physically written notes, these methods come with high risks and potential security vulnerabilities. They do not stop other people from being able to read your secret if they ever have possession. With Chaindeck, you have a non-digital encryption solution that offers a balance between convenience and security, so you can feel confident that your secret phrase is safe.

Yes.

Place the arranged deck inside the sleeve box to make it easy to hold the deck together.

Each print/batch of Chaindeck has different random numbers on the cards. Chaindeck is printed in small batches.

Yes. There are many ways to combine multiple decks. Simplest way to combine them would be to stack them after arranging the cards on each deck separately.

This depends on your handwriting and how much space you want to leave blank. The sides of the deck will have a total area close to a quarter of a standard letter size paper. However, remember that you will need to write legibly on uneven surfaces.

Each card is 7 cm x 7 cm (2.75 inch x 2.75 inch). The 100 cards measure about 3.5 cm thick.

Chaindeck cards are printed on professional standard card stock.

You will need a black or dark colored marker to record your seed phrase. Even though the face of the cards are black, the sides of the deck are white.

Chaindeck orders ships within 1-3 business days.

Currently we only ship to US.

We are working to expand globally. Please contact us at info@chaindeck.xyz if you don't want to wait, and we will try to arrange a custom order to your destination.

You can return unused items in accordance with our Return Policy within 15 days of order delivery. We also give refunds if the product has any defects, as outlined in our Return Policy.