Billfodl FAQ

What is Billfodl? What is it used for? Why do I need it?

Billfodl is the most secure way to store your private data offline, safe from hackers and internet thieves. It’s an almost indestructible object that backs up your data (cryptocurrency private keys, passwords, wallet recovery seeds, etc) the old fashioned way - through good ole raw material engraving and no need to trust any third-party.

My seed is 157 letters, but Billfodl only has space for 96. What do I do?

Don’t worry! You can still store you your seed securely on Billfodl. The way the recovery seeds work is such that you only need the first 4 letters of each word in the seed. For example, if your seed had the words:

witch collapse practice feed shame open despair creek road again ice lease

Then you would arrange your tiles to look like this:

witc coll prac feed sham open desp cree road agai ice leas

If you ever need to recover your private data, you would just input the first four letters into any major crypto wallet (MyCelium, Jaxx, Ledger, Trezor, etc). For how to do that, see:

• Trezor
• Ledger
• Blockstream Green: When you load up the Chrome App on a desktop the first thing it asks is for your to enter your seed phrase.

For more info, see our blog post on why you only need 4 letters for each word.

My Wallet is asking for the entire word, but I only recorded the first 4 letters in my Billfodl. Where do I find what the whole word is?

While rare, some wallets do ask for the entire word. The list of full words can be found here. Only one word on the list will start with the first 4 letters in your Billfodl.

Is there a set-up demonstration video I can watch?

There sure is! Check it out below! 

Compatibility with Hardware Wallets

Does the Ledger Nano X Work with Billfodl?

Yes, you can use the Billfodl to back up any ledger device, including the nano x

Does the Ledger Nano S Work with Billfodl?

Yes, you can use the Billfodl to back up any ledger device, including the Nano S.

Does the Trezor One Work with Billfodl?

Yes, you can use the Billfodl to back up any Trezor device, including the Trezor One.

Does the Trezor Model T Work with Billfodl?

Yes, you can use the Billfodl to back up any Trezor device, including the Trezor Model T.

Does the Keepkey Work with Billfodl?

Yes, you can use the Billfodl to back up a keepkey device.

Does Billfodl support all key types?

Indeed it does! We only have one product, and it was designed to support all private key types: Hexadecimal, Alpha-Numeric (Wallet Import Format), and 12, 18, and 24 word seed phrases.

We designed it so there was no confusion for our clients. It doesn’t matter what kind of key or password you are storing.

What is Billfodl made of? Can it withstand the effects of fire, flooding, or EMP blasts?

TL;DR: it’s made of 316 Marine-Grade stainless steel and yes, it can survive all of that:

We even had it tested at a U.S. Department of Transportation munitions testing facility to see how it would hold up. It was subject to two consecutive 600 gallon jet fuel fires.

Read the results of that test!

SPOILER: It survived fine.