Questions tagged [hardware-wallet]

A hardware wallet stores one's private keys in a secure hardware device.

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Is it possible to send BTC directly to a hardware wallet (such as Trezor) simply by plugging the hardware wallet to a USB port?

This question is about how standalone a hardware wallet (such as Trezor) is. Or in other words, what other components, if any, does it depend on. So this is about what other components are needed for ...
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How to add bip38 on DIY hardware wallet?

I'm making a DIY hardware wallet with arduino. I'm trying to understand how to implement the BIP38 passphrase. As I understand it, it's best practice to not store this on the hardware device. In this ...
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Can private keys be physically extracted from a Ledger hardware wallet?

The Ledger company says that their chips are super safe so that even if some electronic engineers get your Ledger wallet, they cannot get your private key. But is that true? For example, if I stole ...
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Is it better to encrypt the mnemonic or hash it? Hardware wallets

I'm making an Arduino hardware wallet, I'm curious about best security practices for storing the mnemonic phrase. Would it be better to encrypt it then let the user view it with the pin. Or store a ...
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Is it ok to use dices to generate seed for trezor on coldcard?

Coldcard's derive entropy function doe snot have dice method. The only way to generate a seed using dices on coldcard is on "import seed". Is it ok if I use this feature and generate a new ...
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What is extended master key fingerprint on coldcard?

On coldcard on Advanced -> View Identity, there's extended master key fingerprint I though this was the xpub from my seed, but even after I changed seeds, it remained the same. What is it?
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How do many public keys correspond to one private key?

I have read online that hardware wallets can generate new public keys to facilitate transactions. Ie if someone has BTC on an exchange and they want to send that BTC in different installments to a ...
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Is this scheme for multisig audit of Trezor + Coldcard ok?

My plan is to make a multisig between coldcard and trezor. I want to audit and verify that I indeed own the 2 keys of these wallets, using a raspberry pi zero (no wifi/bluetooth by definition) on a ...
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Trezor backend development , blockbook installation error

I am running my own node bitcoin core , mainnet and testnet , with trezor custom backend Blockbook, so that i can access my nodes wallet, send tx. on trezor wallet. I am not able to sync the chain ...
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Is there a way to tell that our bitcoin is safe after we put it in a hardware wallet for cold storage after 3 or 5 years?

If I consolidated 1 bitcoin into an address using a hardware wallet, and put it in cold storage. Can I know after 3 to 5 years that the bitcoin is safe? So far the research I have is: can I go to ...
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Is our hardware wallet safe if the PC or Mac has 3rd party apps?

For example, our PC or Mac might have 3rd party apps installed, such as Pixelmator, GIMP, or VLC player. They are usually considered to be safe apps. However, is it true that when using a hardware ...
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459 views

How long can popular hardware wallets last in cold storage?

Consider the Ledger and Trezor hardware wallets: how long could they last in a typical bank safety deposit box? If the answer needs specifics, assume the following: Temp: 20C Humidity: 50% RH ...
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If the “wallet seed keywords phrase” is all that's needed to restore a hardware Bitcoin wallet, isn't backing that up a nightmare security-wise?

I buy a Trezor. I put all my coins on it. It has me type out the "wallet seed", which is a series of English words in the right order, onto a paper. And maybe I even buy a metallic card ...
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What does bitcoin.org mean when they say about Coldcard Wallet “the final software was not built deterministically like Bitcoin Core”?

I am looking at hardware wallets to store my Bitcoins, and Coldcard Wallet Mk3 seems like a great option. However, at looking at info about it at bitcoin.org, it says that the software is not built ...
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Do hardware wallets store the wallet.dat redundantly inside? If not, are there such hardware wallets?

I'm baffled by how "cheap" the existing hardware wallets look and seem. They seem to have been made "at a budget", with no real high-end version available. If I owned something ...
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Am I really understanding how the “Trezor Model T”, and hardware wallets in general, work?

Getting increasingly paranoid about losing my coins, I've yet again (for probably the 20th time by now) went looking for hardware wallets. The only semi-reasonable one seems to be the two Trezors. All ...
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Can I use coldcard wallet to multisig between it and another wallet?

I want to use coldcard wallet + another device, possibly a smartphone, for multisignature. Ideally I'd like to use Coldcard + Bitpay. I've found tutorials on coldcard multisig: https://www.youtube.com/...
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How do I make multisig transactions using hardware wallets truly trust minimized?

I am experimenting with multisig transactions using hardware wallets. Is there some general guidance on what I should and shouldn't do to make the process truly trust minimized?
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What is the difference between PSBT support in Coldcard and Trezor?

The 10x Security Bitcoin Guide says that the only two hardware wallets support BIP174 (partially signed Bitcoin transactions, or PSBT). However, this Reddit thread says that "You can use PSBT ...
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How does a hardware wallet interact with the bitcoin network?

I tried to understand the principle how the hardware wallet sends transactions to another Bitcoin address since it is not connected via full node to the blockchain. I found this answer: How do ...
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Starting bitcoind for the express purpose of creating a wallet?

Referencing this solution: My favorite method: grab out a old/unused pc/mac install a linux over usb (maybe Talis) (make sure your USB stick is clean!) download a recent version of bitcoin-core (...
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What needs to be written down for a paper wallet?

I'm installing bitcoin-core with snap on Ubuntu for a dry-run at generating a paper wallet. Perhaps naively, I thought to "write down" something like: nicholas@mordor:~/bitcoin$ nicholas@...
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Are all 'metal wallets' functionally equivalent?

Within the context of wallets, is it correct that a metal bitcoin wallet needs to store both public and private keys? I'm looking at some metal wallets and want to clarify that the're all basically ...
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distinction in types of wallets: on a device, physical medium or in a program? [duplicate]

What is the distinction between a paper wallet, cold storage, and off-line storage? Perhaps I'm naively lumping them together. To my understanding, a wallet is: A cryptocurrency wallet is a device,1 ...
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What exactly is the benefit of buying a hardware wallet for Bitcoin?

Let's say I invest in a physical Bitcoin wallet. They aren't exactly free, so it's going to cost me money, effort, time and energy (to set it up and put coins on it). Then what? It's not like I can ...
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387 views

If hardware wallet provider disappears, can I still manage my coins?

I don't fully understand how hardware wallets work, there are two major brands, I will not name them. I see they give you a seed and you can restore from that seed, but... I understand these wallets ...
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117 views

Electrum paper wallet exploit

I want to generate a paper wallet with Electrum using my personal computer that I've been using for a few years now, meaning that I'm online with it daily. I know that the optimal solution is to use a ...
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1answer
580 views

How do hardware wallets communicate with the outside world?

Hardware wallet has more security than software wallet because they store private key in offline hardware, which online attackers cannot access. Thus, they sign in the hardware and then send the ...
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Is it possible to use Bitcoin-core for multisig? Can it handle change addresses?

I have tried to import three xpub in a watch-only wallet as keypool with importmulti and a multisig output descriptor and to fill the first address with some BTCs. When I try to spend the newly ...
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What is the threat model of a Bitcoin HSM / Hardware Wallet?

There are many devices available which purport to allow for the secure storage of Bitcoin in adversarial environments, such as compromised computers or potentially untrusted host devices such as ...
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1answer
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Handwritten paperwallet or hardwarewallet to store Bitcoins?

Most people I talk to are convinced that a hardware wallet is the safest place to hold your Bitcoins. But I'm not so sure if it's not safer if I create offline on a non compromised fresh system the ...
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Can hardware wallets actually display the amount of funds leaving your control?

It would seem the answer is no, because the hardware wallet is not a full node and cannot know the total value represented by the input transactions. It must trust the host software for this. Am I ...
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Can TREZOR sign transaction with input address beyond gap limit?

Suppose I use TREZOR with Electrum or Bitcoin Core HWI and significantly change the gap limit to, let's say, 100 000 addresses. I then receive BTC to my 999 999-th address and want to send them ...
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How can i verify my txs with my own full node?

Hey i run a full bitcoin+lightning node on a rpi. Can anyone eli5 me how can i verify my own tx if send some coins from an exchange to a public address i control? Lets say i plug in my hw, send some ...
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206 views

How do I know that my Ledger HW Wallet is using receive addresses for my wallet and not another remote wallet?

I'm a paranoid newb, I bought a hardware wallet (Ledger nanos) and have transferred funds to it. I noticed that it generates P2SH addresses, so how could I know if the script hashed is spendable by my ...
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Bitcoin on a cloud-based hardware security module (HSM) by AWS

As far as I know AWS does not support the secp256k1 on their cloud-based hardware security module (HSM) called CloudHSM. Gemini is using CloudHSM for their hot wallet. How is it possible to ...
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Review sites for the hardware wallets? [closed]

As I understand it there are four (4) hardware wallets produced currently (2018). Which businesses, web sites, or academic papers in the field review and compare the security of these devices? Is ...
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If anyone with your seed phrase can generate your wallet private keys, what is the advantage of a hardware wallet?

When you start using a cryptocurrency hardware wallet, you get to write down a seed phrase in some physical medium (paper, metal, etc.) so you can regain access to your funds if you lose the hardware ...
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Does Bitcoin have a physical equivalent like US dollars do?

I can send US dollars electronically and they get recorded electronically at my bank. However I can also get a piece of paper to represent different amounts. For example, my bank will give me a '...
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How does my hardware wallet know what my “account” balance is?

There must be a request to wallet provider's server with full node where they will check it. But what is sent?
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485 views

Can the Large Bitcoin Collider project 'break' into offline hardware wallets like the Nano Ledger S?

Let's say the Large Bitcoin Collider manages to guess the private key of a particular Nano Ledger S. Can they then 'spend' or 'steal' the Bitcoins on the Nano or 'send' them to another wallet?
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Possibility of hardware wallets being 'unsupported' in the future?

I was reading online about getting a hardware wallet/vs a paper wallet, and some comments online were mentioning that "Tech changes so quickly that in 16 years the hardware wallet might be completely ...
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3k views

How are Ledger Nano S private keys protected?

I've read quite some material but it boils down that there "is a chip" on Ledger Nano S and the private key never leaves it. But what I would like to know is the following. Is it encrypted? If so, ...
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Is a Trezor hardware wallet dependent on wallet.trezor.io?

A review of the Trezor hardware wallet says: In order to access your coins, you would simply do so by connecting your TREZOR to your computer and power up the TREZOR wallet interface at https://...
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General-Purpose Hardware Wallet

Fundamentally, crypto-currency hardware wallets are just devices that securely generate public/private key pairs, and sign input data when approved using a password and physical approval mechanism, ...
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What is the 25th word in a mnemonic seed when used on a ledger nano s?

By default ledger nano s generates a 24 word mnemonic. What is the 25th word feature? Is the the passphrase they are talking about?
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How to get Ledger Nano S to work in an Ubuntu VirtualBox?

I installed the ledger manager on Ubuntu VirtualBox, but I can't see any of my USB devices. My host OS is Windows 10. How do I get this to work?
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What are those bitcoin mining hardware doing 24/7? [closed]

What are those hardware doing? Which open-source or closed source software to use on those? I want to buy one of those hardware for my learning and programming. Any advise?
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Is it 'safe' to store hashed values of my mnemonic seed phrase on my computer?

I am setting up my hardware wallet, and have written down my mnemonic seed phrase physically, but also want a way of accessing it from my computer. If I add all the seed words together, and hash it ...
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P2SH in Hardware wallet?

I am designing a hardware wallet and the software that will work with it. I plan to provide P2PKH transactions support in the software for hardware wallet to sign. Is it mandatory to support P2SH ...