Questions tagged [coldstorage]

Storing a wallet offline, i.e. making the private keys inaccessible from the web. This is e.g. implemented through use of Paper and Hardware Wallets.

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Is https://www.bitaddress.org/ safe to create a paperwallet?

I want to create a paper wallet for cold storage and am not sure of the best way to do that. I heard of https://www.bitaddress.org/, but is it safe if booted from an offline PC? Thank you!
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287 views

How to generate a paper wallet?

What do you find the best way to generate a paper wallet for BTC? I've heard of this one: https://keybase.io/warp/warp_1.0.9_SHA256_a2067491ab582bde779f4505055807c2479354633a2216b22cf1e92d1a6e4a87....
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How can I generate a Bitcoin address from a 12 word seed without using a computer?

I have a 12 word seed and I want to generate an address without exposing it to any computers. How can I accomplish this?
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Why is it safer to keep your bitcoins offline than online on Coinbase?

I'm trying to think of a good way to store my bitcoins somewhere but I can't really think of a way to do it without 1) having something physical (eg. USB key) that can get lost or destroyed 2) having ...
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Multi coin paper wallet generator?

Is there a site where I can generate paper wallets for multiple cryptocurrency addresses?
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How to create Ethereum brain address? [closed]

I have used bitaddress.org to create a brain wallet for my Bitcoin. Now I would like to create a brain wallet for my Ethereum using Bitcoin Improvement Proposals (BIP) 32/39/44/49 technologies. Is ...
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536 views

Recommended way of printing a cold wallet

I'm considering making cold paper wallets (for multiple cryptocurrencies) for offline storage in a safe deposit box. Before accessing the safe deposit box, my identity is checked and I must show my ...
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376 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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Which wallets support spending partial amounts of btc from a cold storage address?

Which wallets let you spend partial amounts from your btc address from a cold storage address without the need to import / sweeping it? I know mycellium has the feature, but I'd like to know if there ...
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732 views

Method of spending LTC Litecoin from a paper cold wallet?

I know mycellium has a feature for BTC where you can spend partial amounts from a Bitcoin cold paper wallet. Is there something like this for a LTC Litecoin cold paper wallet? I just want to spend a ...
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Forks/ alternative coins and paper wallets

So I have some bitcoin on paper wallets purchased at ATMs well prior to the bitcoin cash split. I have only kept cold-storage paper thus far, but recently purchased a Ledger Nano S. My question is, ...
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Use trezor securely

I'm trying to figure out how to use a Trezor for my needs. I'd like to have different "layers" of security, so my plan is to use this setup (less secure on top): Online wallet for every day usage (1%)...
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How to setup USB Cold Storage for Bitcoin and Monero?

Is it possible to keep many currencies (Bitcoin, Monero...) on one USB drive? If not, how can I setup USB Cold Storage for Bitcoin and Monero?
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Is there a paper wallet for all crypto-currencies?

I am relatively new to crypto-currencies and I am just wondering if there is inherently a paper wallet for all crypto-currencies made? Do they all have public and private keys that you can write down ...
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How to safely use cold storage

I am relatively new to cryptocurrencies and would like your feedback on how to safely generate paper wallets for BTC, ETH, LTC and XMR tokens. I intended to follow these steps: Download and install ...
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How to securely store Bitcoin server-side?

I am working on a web application that needs to hold users Bitcoin for an extended amount of time (escrow-like scenario), and I was wondering what are some good steps/precautions and principles (dos &...
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How to backup paper wallet digitally

I'd like to move some bitcoin off an exchange and into a paper wallet for long term storage, but looking for ways to backup the keys in case of theft/fire/stupidity. My thought was to (on a new ...
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'Deposit account' for repetitive bitcoin payments

I am looking for something that would allow me to offer a general "deposit" address (like for payments through my website, services I offer etc.). I am using Electrum as cold storage solution (with a ...
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Electrum Holding Bitcoin Long Term Seed

I am sure this has been asked before but I want to be absolutely sure before I start: Using the Electrum Software I have created a basic default wallet on my desktop. I have a good deal of money ...
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Securely encrypting a cold storage wallet

I'm going to buy bitcoin to exchange BRL to CAD currency, as it's gonna be a great amount I'm concerned about the security of my wallet. I don't want to use a physical backup like paper or device ...
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1answer
700 views

API to send bitcoins from paper/cold wallet?

I am making a program which will take a .wif private key, and send all funds from the wallet represented by the key to a certain address. I need this to be fully automated, but I can't seem to find ...
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327 views

Receive at Watching Only Wallet

I am a little foggy about the Watching Wallet copy in Armory. I have received BTC in my Watching only wallet. Is there anything that I need to do now to get those to the Cold Storage Wallet or is the ...
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new Bitcoin Core (0.13.2) as Cold Storage Wallet?

What are the instructions (in GUI or CLI) to setup and use the new Bitcoin Core (0.13.2) as Cold Storage Wallet? OS is Ubuntu 16.04.
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How to install Electrum wallet in an offline Linux computer?

So I want to play with the Electrum wallet, but as Cold Storage. Then what I plan to do is to install a raw Ubuntu 16.04 LTS into a computer "A" which I will never plug to the internet. So, with ...
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Can I use Electrum seed as a paper wallet?

Based on what I've read so far I'm pretty sure that what I want to do should work, but I'd like to get some confirmation to make sure I won't be causing myself issues by screwing something up if I'm ...
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Does Trezor have any shortfalls security-wise?

Or do you have a recommendation for another cold wallet?
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Why wipe all BTC from an imported address?

I've read a couple blog entries and tutorials on how to spend BTC that are "stored" on a piece of paper. They all suggested importing the private key into e.g. blockchain.info's wallet (or any ...
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Is holding funds in a Bitcoin paper wallet safe?

If you received lots of bitcoins, like 100, and you are not comfortable holding them in your personal blockchain wallet, is it preferable to move them and hold them in a paper wallet for safety ...
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What is the risk of using wallet.dat files for long term cold storage?

i created these wallet.dat files on an offline machine in 2014 using QT. I've sent coins to the receiving addies over the years. these files are bip38 encrypted. do i need to do anything to these ...
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850 views

Safely transferring bitcoins from wallet.dat to cold storage

A similar question was asked by me in 2014, but I did not find the answer satisfactory back then, and I hope some things changed since in the last two or so years. I have a wallet.dat file with some ...
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What is the safest physical to store a private key only to be accessed after death?

Assume that my friend would like to encrypt his Bitcoin private key(s) and safely store them in a secret location. This located would only be identified to heirs after death in his will. Should he put ...
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Is it safer to use one type of hardware wallet of several?

I know that there are several brands of hardware wallets with open source firmware that are considered safe. Is it better to just one that is safe and you are most familiar with? Or would hedging by ...
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1k views

How can I hold Bitcoins safely in the long term?

Say I wished to hold a lot of bitcoins for many years as an investment. My worry would be about the long term safety of the different wallet mechanisms. If it's a website - what if it goes bust or ...
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What is the best method for creating a paper wallet?

I am looking to move some of my bitcoins from cold storage to a paper wallet. I have heard that metal stamping is one of the better long term strategies since paper can burn or fade. Any other ...
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Transfer coins from Armory paper backup without Armory

I have an armory offline installation on a USB stick with Ubuntu. From this wallet I have a paper backup. To access my funds I tried to install Armory on Mac OS and Windows 7 with no luck. The best ...
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280 views

Cold storage for bitcoins

I'm planning to store some bitcoins in cold storage. I'm doing a very simple setup, no complicated algorithms, no wallets... Here is my plan Create an air-gapped machine with a Linux distro. The ...
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Hot wallet and cold wallet

If you have a online site that accepts bitcoin deposits and users can withdraw their balance, Is it possible to have the deposits go to the watch-only address of a cold storage and the withdraws come ...
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Estate planning: how can I ensure my bitcoins are inheritable?

What are good ways to ensure my bitcoins can be inherited by my family when I die or become permanently incapacitated? I think there are probably two significantly different situations to account for,...
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Cold storage companies?

I was curious to know if anyone knows of any bitcoin business that stores people's wallets offline? I'm looking to diversify my backup methods for cold storage and am wanting to send my backups to a ...
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How can I tell if files from coldpi are backdoored?

I'm trying to install Armory on a Raspberry Pi. I have tried installing the [Offline Bundle] for RaspberryPi (armhf) from http://bitcoinarmory.com but I'm getting compile errors on Raspbian. I also ...
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Using Armory Watch-Only wallet in Electrum?

Is it possible to import a Watch-Only wallet that was made in Armory into Electrum? I like to use Armory for cold storage but like Electrum more for hot wallets because it's lightweight and you never ...
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How would one go about generating a BIP-38 encrypted vanity address for cold storage?

I want to generate a vanity address with BIP-38 encryption for a cold storage paper wallet, how would I go about securely making one? From what I've found, generating a vanity address with Vanitygen ...
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Encrypting Bitcoin private keys instead of printing out paper

I follow the procedure of making a cold storage wallet: downloaded copy of bitaddress.org using an off-line computer booted with Ubuntu from CD. Instead of printing out the private keys and ...
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How do I prevent the standard Bitcoin client from sending some of my Bitcoins to a change address?

I found somebody that imported a paper wallet with 100BTC then used 2BTC BUT the other 98BTC were sent to a change address. Why and how can I prevent this; how can I enter a custom change address?
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How can I install a bitcoin wallet on Kali Linux?

I got Kali Linux installed on my laptop and I want to install a good bitcoin wallet to store my bitcoins offline.As I know,top 5 best bitcoin wallets would be Bitcoin Core (the first offline wallet),...
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BIP38 or Brain wallet?

I have seen many videos about paper wallets and different ways to store BTC. And I have choose to store using a cold wallet (paper wallet). But I am not sure what option I should choose: a normal ...
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How can an online wallet be more secure than paper wallets or cold storages?

Recently, after I was reading that some bitcoin early adopter lost 750 BTC due to theft from his macbook, I was looking for the most secure storage solution for my coins. I already know about paper ...
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How to securly move bitcoins from a wallet.dat file to a paper wallet? [duplicate]

I have an old wallet.dat file with a few Bitcoins. It is stored in an isolated computer that is not connected to the internet. I would like to get rid of the wallet.dat file, and move all the ...
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Coinbase Security

Does anybody know how cold is the Coinbase cold storage? I'm not really into Coinbase but when I read about their cold storage I become a little bit skeptical: for example, how do they process ...
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What is the equivalent of cold storage or paper wallet for NXT?

I want to be able to secure my NXT in cold storage. What are some ways of doing this? Since NXT is only accessible via a brain wallet, I can just store the passphrase on a paper, but what if I ...