I just got a Trezor T - i’m using Shamir backup
I want to know the master seed phrase as well as the shamir shares.
How do i accomplish this?
I just got a Trezor T - i’m using Shamir backup
I want to know the master seed phrase as well as the shamir shares.
How do i accomplish this?
There isn’t any master phrase. The shares themselves are your backup.
In particular, there is no way to convert a Shamir backup into a BIP-39 12- or 24- word single backup that you could import into a different wallet. You can only import into Shamir-compatible wallets.
If what you want is to have both (a) a 3-of-5 (or another) set of shares that you distribute to your friends, and (b) a single phrase that you yourself can use to recover the Trezor, that can be done by using SuperShamir:
This will give you 6 shares in total: 5 of them have the same 3 first words, the 6th has the same 2 first words but a different third one. This sixth share alone is enough to recover your wallet. If you lose it, you will need to complete a quorum of 3 out of the 5 remaining shares.
Thank you so much for this.
How do i go about implementing this on the device i already have setup with regular shamir.
Is the second group also a 20 word phrase? In an ideal world i would like to have a 12 world phrase i remember and then a group with a separate set of shares which i can give to friends.
Unfortunately, Trezor does not currently support a way to regenerate shares of an existing secret.
You would need to set up a completely new SuperShamir backup with the configuration that you want, and move your funds to the newly generated addresses.
(This can be done with a single Trezor, although the process is quite long:
Yes, the second group is also 20 words.
But yours is the first good idea I heard that involves memorizing a mnemonic That’s something to be discouraged in the typical case, because the human memory is not reliable enough for this purpose. But if you have a “backup of a backup” in the form of the other set of shares, that would work quite well.