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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How do exchanges automate transfer of Bitcoin from a cold storage wallet?

Most exchanges use Cold Storage to store the bulk (approx. 95%) of their user assets. Only a relatively small amount (approx. 5%) of funds are held in their Hot Wallet. My question is, what process is ...
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Is it possible that malicious bitcoin wallet providers provide pre-generated private-keys for users?

We trust wallets like Ledger, Trezor, and etc. We believe the math that the randomly generated private keys are safe. But could it be possible that the private keys you thought are “generated” are ...
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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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Safest way of long term holding

I am considering holding Bitcoin for the long term. I have learned a few basics about the blockchain and BTC mechanisms, but still unable to find a complete guide on how to safely store bitcoin. How ...
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131 views

How to create a signed transaction offline using electrum?

I remember that on Electrum, it used to have a Preview button inside the Send tab. By clicking the Preview button I could export the unsigned transaction, and then sign it. I cannot find this button ...
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119 views

Transactions for multiple crypto-currency coins in cold storage without downloading full block-chains

I've searched on the internet and still unable to understand the usage of cold storage. Actually, I want to buy a few types of low price crypto currency coins and save them in my personal devices or ...
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Why does all cold/offline storage setup require three steps?

I was reading about cold/offline storage and from what I have seen all clients seem to work the same. Requiring you to create the transaction on the online computer, getting it to the offline computer ...
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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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Should I be using the “encrypt wallet” feature in Bitcoin Core?

All my wallet.dats have no password. However, the internal hard disk where the "live" one is located is encrypted, and so are the offline storage devices where I have my "cold" ...
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167 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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177 views

Are Hardware Wallets (i.e, Ledger Nano X) Safer than Software-Based Cold Storage Wallets?

I'm looking into purchasing Ledger Nano X as a cold storage hardware solution. What benefits does Nano X (or other hardware wallets) provide over software based cold storage solutions? Why not install ...
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“Hot”, “Cold” & “Warm” Storage Wallets? [duplicate]

I've seen a number of sites advertise they support "hot", "warm" and "cold" wallet storage solutions (the only thing I haven't seen so far are "frozen" wallets)....
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Glacier create-deposit-data raise error

I would like to create a cold storage with Glacier protocol but calling create-deposit-data script fails. Following this tutorial: https://glacierprotocol.org/docs/deposit/generate-cold-storage-data/ ...
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Is my cold wallet still cold?

I created a new wallet.dat on a dedicated, secured machine with Bitcoin Core. Then I encrypted it. Then I sent my "fortune" of coins to it. Then I backed the file up by putting it on all my ...
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How to send bitcoin from an offline Bitcoin Core that doesn't have a synced balance?

I am setting up a cold wallet. How can I generate a signed raw transaction from bitcoin core wallet that controls some bitcoins? PS: I generated the wallet using getnewaddress in console from the ...
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How do I make a Bitcoin “memory wallet” (or paper wallet without paper)?

I'd like to see a video tutorial that explains in detail how to make a paper wallet without paper, AKA, a "memory wallet" -- thx.
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What is the best way to generate bitcoin wallet?

I am trying to create a cold storage, and I'm becoming so paranoid about everything on software and hardware (also afraid of myself forgetting/losing the wallet) related to the setup. I have read some ...
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Which one is safer for a cold storage bitcoin-core or electrum?

Since bitcoin core and electrum uses different method in generating the wallet (BIP39 & BIP32). I wonder which one is the safer option to use for cold storage?
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Is there anything wrong using a cold wallet from BitKey in watch-only mode on my normal desktop Electrum?

I followed the instruction for cold-offline in BitKey and created my cold wallet on a USB key with BitKey burned and booted from a CD-ROM. I noted the encryption password and the seed phrase on a ...
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Question: Docker alternative to Tails OS for generating Bitcoin addresses securely for cold storage

I am exploring options to generate Bitcoin private keys and addresses in most secure ways, using Ian Coleman's BIP39 tool. https://iancoleman.io/bip39/ The most recommended OS seems to be Tails OS for ...
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Security of online Electrum wallet after deleting wallet file

I just created an Electrum wallet using my computer which is connected to the Internet. Suppose I send my bitcoin from an online exchange to that wallet, then delete the wallet file. Are there any ...
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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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standard bitcoin wallet vs segwit or native segwit

I bitcoin holder, 1 years ago I bought trezor and ledger and keep on my device bitcoin and ehternum. I noticed that my bitcoin adress is segwit and standard bitcoin adress started with 1... I ...
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how to generate or calculate a key pair from a seed?

Using, for example, the electrum wallet, how, exactly, is the key pair, and hash address, generated from a paper or metal wallet? Assuming libsecp256k1 was employed.
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How to generate a very secure wallet with Electrum?

For a poor-mans glacier protocol, looking for: One private key – an alphanumeric string used to secure the funds The cold storage address – an alphanumeric string designating the virtual “location” of ...
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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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106 views

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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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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How to accelerate the long time for bitcoin-core to sync the blockchain? [duplicate]

How can I accelerate: the process of sync'ing bitcoin-core for console usage? Pokey internet. Can't I sync recursively and in the background? Just looking to learn by playing and using console ...
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1answer
59 views

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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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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2k views

Is there a cold storage option for altcoins? [closed]

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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Signing a bitcoin transaction OFFLINE fails

I know this subject has been discussed quite a lot, but after several days looking for this to work, I give up. I want to create a transaction on a view-only wallet which is connected to the internet ...
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What kinds of wallets are there?

Can I get short a explanation about cryptocurrency cold/hot wallets? Are there more kinds?
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does 24-word recovery seed recover just bitcoins or all coins?

I keep Bitcoins, Bitcoin Cash, Bitcoin Gold, Ethereum (via My Ethereum Wallet) and Litecoins on a Trezor. Question 1: In the event that my Trezor is lost or destroyed, will my 24 word recovery ...
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Re: Old bitcoin address fro BCH and BSV claiming

I have a BTC address from 2013 when I bought my BTC, it is a paper wallet (the BTC have been moved), but I want to claim my BCH and BSV (Is this correct I can also claim BSV?) and move it to my trezor....
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Why hasn't cold storage (offline signing) been supported by Bitcoin Core (GUI) up till now (0.19.0.1)?

Is there any deep reason not to support this? Or is this merely a "good idea, but no volunteers" situation? By the way, although Bitcoin Core had supported BIP32 several years ago, it uses hardened ...
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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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how to get bitcoin off an exchange?

As a corollary to asking how to transfer from cold storage, how is bitcoin first put into a paper, or other wallet, when it originates on an exchange? My primary concern is more getting the coins out ...
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154 views

How can I turn off sending of bitcoins?

I use Bitcoin Core v.0.17 on the server. I want to only be able to receive, and prevent sending. How can I turn off sending of bitcoins through bitcoind, bitcoin-cli or bitcoin.conf?
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do i get a new private key for every transaction that I transfer to my cold storage

If I buy crypto in little bits at a time and I transfer to the cold storage wallet every time I buy some, would a get different private keys for each transfer? how to keep track of all those keys? ...
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68 views

How does Sentinel check Blockchain?

I've been very happy to hodl my Bitcoin on a paper wallet (coinglacier.org) and using Sentinel to view the balance of my addresses (using extended public key). Sentinel is an awesome app, it provides ...
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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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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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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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465 views

What really happen when user moves fund between Main Account and Trading Account in HitBTC?

I am building a crypto exchange and I wonder how HitBTC exchange (https://hitbtc.com/) is handling "Main account" and "Trading account", as the image below: According to them, Main Account is like ...
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1k views

Multi coin paper wallet generator?

Is there a site where I can generate paper wallets for multiple cryptocurrency addresses?
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crypto currency exchange and cold storage

Most of the crypto currency exchanges use cold storage for depositing bitcoins. I was wondering if they maintain a cold storage for individual user or if they have one large cold storage for all users?...
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Is it possible to send coins WITHOUT importing private key?

I have a cold storage wallet that I periodically move funds into. I want to be able to send funds out of the wallet quickly. Right now, I have to keep a clean VM up with the full blockchain, then ...
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What they stored in cold wallet? All bitcoins anyone owned is already in blockchain

I just want to understand what actually they store in the cold wallet because all bitcoins anyone owned is already in the blockchain. Do they store the private key of users in cold wallet?