🔥Seedkeeper🔥 Hardware device to safely store your seed

[Tibu]

I just see this on my local board, Husna sharing this tool, I still don't know how it work, when the function still uses electronics as media for storing the seed, is that function can still be hacked from the internet even if it is offline?. (cookie, history and etc)

Is available for storing besides BIP39 seed such as Electrum seed?, because when I read how-to, there is generate a random seed, when different seed (electrum) from the default (BIP39), I doubt it will generally not as usual and make the confused when use for restoring it.

What material? SS304, Titanium, or PVC (ATM Card)?

how to restore when forget PIN CODE?

Your Seedkeeper card is protected by a PIN code: a 4-16 characters password used to unlock it

Seedkeeper is "offline". If you generate a masterseed "on chip", it's completly air-gapped. Meaning the hosting computer, neither the user is able to see it.
Of course, if you use our Seedkeeper-tool to generate a new seed or import an existing one and your computer has a keylogger, you might be compromised.

You can store any seed on the device.

Cards are made out of PVC like your ATM card.

If you forgot your PIN code, you wont be able to recover it. It's a security measure. But Seedkeeper-Tool comes with a one click backup solution. So you can initialize several Seedkeeper cards with different PIN code and import the same backup on each one.

How many digits codes? is that Seedkeeper have a number 0 for a pin?. because I'm just a little bit uncomfortable, Trezor hasn't Number 0 to create a pin which is my favorite number.

Why you don't make it like another seed keeper using steel?, the function will be more perfect, we don't need to worry about fire and we can keep it on a wood cupboard. And I don't know why we need to PIN for each mnemonic phrase where PIN/Password is we can use for an additional phrase using the same mnemonic seed to create another wallet/address.

Regarding the PIN code, you dont need a dedicated PIN for each seed you want to save in the Seedkeeper memory.
The PIN is unique, from 4 to 16 chars and can include 0-9 but also a-Z or any other char. You will be able to put "ImInLoveWith0" as a PIN code.
This code is needed everytime you want to access the chip memory.

Using a metal plate instead of the PVC will not be more secure or wont last longer in time. And metal plate isnt suitable for NFC communication. Seedkeeper card is NFC ready, the antenna is hidden in the PVC layers.

[1714641520]

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[1714641520]

1714641520

[Tibu]

For French speaking people, we hosted a Space a few days back.

Topics:
- Security,
- Seed storage,
- Best practice


Here is the link: https://twitter.com/i/spaces/1BdGYylepNDGX?s=20

[Tibu]

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Seedkeeper Software Ecosystem
A bunch of hardware and open source software solutions to assist you in your BTC journey.
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Seedkeeper works in conjunction with an open-source, lightweight software client.
Here is the Seedkeeper software ecosystem: https://satochip.io/setup-use-seedkeeper-on-desktop/

[Tibu]

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Seedkeeper can help you to...
Solve your cryptocurrency inheritance problem.
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What's the crypto inheritance problem?


To better understand the challenges you’ll face when passing on your crypto assets to your children, let’s take a look at the technical aspects specific to this field.
The tangible representation of a cryptocurrency such as Bitcoin can be explained by cryptography and key pairs. Public and private key pairs play a fundamental role, serving as the means to secure and control ownership of digital assets within blockchain-based systems.
Let’s break down how they work and why they are crucial for possessing cryptocurrencies in this article.

Read more

[Tibu]

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New release : Seedkeeper-Tool v0.1.3
Patch BIP39 seed import wizard to a Satochip (#12)
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Context
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A bug in SeedKeeper-Tool v0.1.2 and previous versions is affecting the import of a seed in a Satochip card.

Because of this bug, when importing a (BIP39) mnemonic from the SeedKeeperTool wizard to a Satochip card (in plaintext), the mnemonic type is not identified correctly,
and the wrong seed derivation algorithm (the one normally used for Electrum mnemonic) is used.
Consequently the addresses derived from the seed are not compatible with standard BIP39 as should be expected.

The bug only affected the user of SeedKeeper-Tool v0.1.2 (and previous versions) who used SeedKeeperTool
to import a BIP39 seed in a satochip card in plaintext (through the "Import a Secret" menu, then "Mnemonic phrase" option).

That bug was patched in SeedKeeper-Tool v0.1.3.


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Who is affected?
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If you are not sure whether you are concerned, you can confirm that your are affected by this bug by following this procedure:

- Open your hardware wallet in Electrum-Satochip, then check balance and generated addresses
(you can also go to "Wallet" in the menu, then select "Information" option and copy the "Master Public Key").
- Create a new Electrum software wallet by importig your BIP39 seed in Electrum. Check the balance and adresses (or the Master Public Key as in the first step).

If the balances and addresses (or equivalently, the Master Public Keys) do not match between the hardware and software wallets, you are affected by the bug.


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My wallet is affected, what should I do?
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If you are affected by the bug and have access to your wallet, it is recommended to transfer all your funds to a new wallet with the correct seed import format to ensure compatibility in the future.

However, if you only have your seed backup for an affected wallet and need to recover the funds, you can use the SeedKeeperTool-patch12 to recover your wallet,
by following the procedure described in the next section.

This small utility (SeedKeeperTool-patch12) allows a user affected by this bug
to recover a wallet derived from the BIP39 seed with the non-standard derivation, either to a new Satochip card, or through Electrum.



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How to use the SeedKeeperTool-patch12
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Install the python script dependencies:

Code:

python -m pip install -r requirements.txt

Run the script:

Code:

'python SeedKeeperTool-patch12.py': python SeedKeeperTool-patch12.py

Based on your seed, the script will generate masterseed, xpriv, ypriv and zpriv that can be used to set up a wallet.

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Recover through a Satochip card

Use the latest SeedKeeperTool release to import the masterseed into a Satochip.

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Recover through electrum (for Bitcoin only)

Provide the BIP39 backup and (optionally) passphrase when prompted by the tool.
The tool will then generate the xpriv, ypriv and zpriv corresponding to your mnemonic, as derived (in a non-standard way) using the electrum derivation.
The xpriv is used for legacy wallet (BIP32 derivation path m/44h/0h/0h). The zpriv is used for segwit wallet (BIP32 derivation path m/84h/0h/0h).
The ypriv is used for p2sh-segwit wallet (BIP32 derivation path m/49h/0h/0h).

Launch electrum (https://electrum.org/) and create a new wallet using the wallet creation wizard (see also the printscreens in folder):

- Create new wallet: choose "Standard wallet"
- Keystore: choose "Use a master key"
- Create a keystore from a master key: enter the xpriv/ypriv or zpriv then click next

Your wallet generated from the seed with the non-standard derivation algorithm should be created.


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Contact
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Telegram: https://t.me/Satochip
Twitter: https://twitter.com/satochip
Website: https://satochip.io
GitHub: https://github.com/Toporin
Youtube: https://www.youtube.com/channel/UCPmmfB5PpuwMtha9mbaRNlg