Store your recovery phrase secure and redudant
I have designed a new redundant Ledger Recovery Sheet. I am always a little afraid to lose my
recovery sheet or that somebody else can find it.
So I designed a new recover sheet.
My requirements was
- redundant in case if I lose it
- safe that it is not possible to recover with only one sheet.
The result was the 2 of 3 recovery sheets.
You need at least 2 sheets to get the 24 words recovery phase
- You can lose one sheet and you can still recover the ledger
- If a thief has only one sheet it is not possible to recover the ledger and coins
Reason for Safety:
One sheet has 16 words of 24 words. One word has 2048 possibilities or 11 Bit.
24 words * 11 Bit = 264 Bit
256 Bit master key and 8 Bit hash checksum
So 8 words have to be guessed:
This means for a brute force attack: 8*11Bits – 8 Bit CS = 80 Bit
2^80 = 1.21 e+24 attempts.
If an ASIC can calculate up to 15000 GHashes/s then my estimation is up to 2500 years.
Do you have tips to store these 3 recovery sheets?
My idea was:
Use 3 different locations for the recovery sheet:
Example: Home, office, online banking account, etc.
Template download and youtube video :
Be sure that nobody has access to 2 or more of your sheets!
Use of this procedure on your own risk!
Store the document in a safe place!