Questions tagged [hardware-wallet]

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

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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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Is HWI support for QR-code based HW possible?

I was listening to interveiw with COBO vault hardware wallet creator and at some point, he mentioned that because COBO is QR-code (sd card option) connected only (non-USB), it can't be supported by ...
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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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1answer
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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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1answer
81 views

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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1answer
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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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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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368 views

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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1answer
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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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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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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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1answer
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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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3answers
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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 ...
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Bought a used ledger nano s from Amazon / Ebay. How do you factory reset the Ledger Nano S?

I just bought a used ledger nano s from amazon and ebay. What is the best method of wiping this device and factory reset it? What are some other precautions before using this used device?
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What will happen to my bitcoin if my Ledger or any bitcoin hardware wallet will damaged?

I want to buy a hardware wallet for storing bitcoin because it is safe than an online wallet but at the same time, I am thinking that what will happen to my stored bitcoin if my hardware wallet ...
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1answer
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Is it possible to design a hardware wallet that can allow operation of a routing Lightning node with the security level of a hardware wallet?

I'm wondering if its possible to design a hardware wallet such that it can be used for a Lightning node that routes payments for their channel partners such that their funds can never be stolen even ...
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1answer
194 views

Can I use a single Hardware Ledger for multiple coins

I am about to buy a hardware ledger to store my coins but I was wondering if I would be needing one ledger per coin I own or if one can hold all or some.
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1answer
95 views

Hardware wallet without a hardware wallet

I want to do some research in order to purchase a hardware wallet. Until I have decided what to do, I would like to transfer my bitcoin balance out of the exchange that I am currently using. I want to ...
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524 views

Recovering BCH sent to BTC Ledger Nano S Wallet [closed]

I've looked at existing relevant threads, but still I didn't got the right solution for my situation, so raising this request. This case is perhaps somewhat different because it relates specifically ...
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1answer
1k views

Sending Bitcoin between paper wallet and hardware wallet offline

Good morning, I'm just beginning this journey into crypto currencies. Right now, I've got my Bitcoin in a wallet at Coinbase. I'd like to keep my Bitcoin in a paper wallet. I think from Coinbase to ...
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936 views

Using a dedicated phone as “hardware wallet”

Is there anything inherently insecure about using a dedicated Android phone as a "hardware wallet"? A dedicated phone implies: a clean ROM without gapps, i.e. Lineage OS without root full phone ...
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518 views

Unable to send raw transaction: mandatory-script-verify-flag-failed

When I send a raw transaction I get an error: 16: mandatory-script-verify-flag-failed (Signature must be zero for failed CHECK(MULTI)SIG operation) Raw transaction that I send: ...
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1answer
4k views

Testing Ledger Nano S wallet seed

Can I test that I've correctly recorded the seed by "restoring" my wallet in a desktop wallet like Electrum by using the seed given to me by my Nano S? It would mirror my hardware wallet, correct? ...
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1answer
273 views

How to get a VanityGenerated public address for a hardware wallet? (Ledger Nano S)

I recently bought a Nano Ledger S and have not opened or set it up yet. I read that you can use a VanityGen to create a Vanity public address. How would I do this for my Nano Ledger, if I want to make ...
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2answers
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Hardware wallet - Claiming forked currencies

I'm considering purchasing a hardware wallet for my cryptos (ledger or trezor) and was wondering how one might claim a forked crypto if these devices don't provide the private keys or add support for ...
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Cold storage, transferable to hardware wallet

As far as I understand, hardware wallets generate a deterministic key space using standard algorithms: starting with a (random) passphrase (and more security tokens?), they are able to rebuild the ...
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1answer
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How to develop and then sell my own Bitcoin Hardware Wallet? [closed]

Okay so basically I have a good idea for a bitcoin hardware wallet, i'm just looking for information on how to go about creating it? Do I need to create my own programs/programming for literally ...
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1answer
465 views

How can I use a hardware wallet with a pool

This might be a totally dumb question but I am trying to understand bitcoin mining, I hope I am bearable. I am trying to figure out if I can use a hardware wallet with a mining pool. I have an ...
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1answer
820 views

What happens when a hardware wallet, like Trezor, suffers a hardware damage?

What happens when my hardware wallet e.g. http://trezor.io stops working? It would be great if someone could outline the procedure. And if there are multiple ways I would like to compare by ...
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495 views

Trezor; How is it true cold storage if their is a recovery seed?

I don't understand how a Trezor is considered cold storage if you can lose it, and then recover your keys through their recovery seed and another Trezor. Where are the keys coming from? Where are ...
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2answers
1k views

Is there a cold storage option for altcoins?

Is it possible to create a paper wallet for altcoins offline and send your altcoins there? I can only buy altcoins from online exchanges like bitrexx but I feel it's really risky to keep large ...
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5answers
931 views

Encrypting wallet manually instead of using hardware wallet

i am new to this community and like to know why one should prefer a hardware wallet instead of using encryption algorithm like AES-256 along with PKDF2 to secure crypto wallets ? i currently hold btc ...
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952 views

Can I send bitcoin from paper wallet directly to hardware wallet?

Can I send bitcoin from my paper wallet to my hardware Ledger wallet without using blockchain wallet?
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3k views

How to make totally secure Bitcoin transactions?

So, I'm wondering if my system of protecting my bitcoin is totally secure. If I have an old laptop, and I boot into tails linux from a flash drive, and download electrum on there, and only ever ...
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Restoring a hardware wallet

Sure this asked many times before and is available but I cannot find it! I understand that all that is stored on a hardware wallet is private and public keys etc. My lack of understanding arises when ...
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How to know balance in Ledger Nano S?

Ledger wallets have a single static address where to send BTC to, but when looking at the details of the transactions, it is always recorded as different receiving addresses. Looking up the static ...
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1answer
367 views

How do Bitcoin Altcoin Hardware wallets work?

From my understanding the hardware wallet contains your private key inside the device. When using a hardware wallet, the gui wallet on the computer or phone creates the transactions, but does not ...
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What is the easiest way (user experience wise) to get xpub?

I'v got monitoring app going for my hardware wallet and am planning to release it to public. Biggest pain point right now is asking users to enter their xpub key. It can be done, but there is no ...