Questions tagged [hardware-wallet]

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

17 questions with no upvoted or accepted answers
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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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381 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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64 views

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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1k views

How can I accelerate confirmations in ledger nano s?

I am using Ledger Nano S hardware wallet to store my bitcoins. Last week, for an experiment, I decided to send bitcoins to hitbtc currency exchange with zero btc fees. I was wondering how many hours ...
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218 views

Privacy risks with a hardware wallet

I'm trying to understand the privacy risks with a hardware wallet like a Trezor, Ledger, or similar. I understand the common workflow with these wallets is that you use an SPV bitcoin client which ...
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1answer
96 views

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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61 views

What is the security and trust model of an Opendime?

Opendimes use some entropy on the device in combination with some entropy added by the owner to generate private keys directly on the device. Until the device's seal is broken, it is claimed to be ...
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51 views

What is deterministic validation for hardware wallets?

On bitcoin.com, they mention that the Ledger Nano hardware wallet "while not open-source, .. can be deterministically validated." https://www.bitcoin.com/choose-your-wallet/ledgernano What does this ...
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72 views

Open Source Hardware For Air Gapped Computer?

I'm looking for vetted open source computer hardware that can run Armory air gapped. Anyone know of such vetted hardware sources?
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27 views

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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30 views

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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1answer
87 views

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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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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26 views

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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192 views

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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566 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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132 views

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 ...