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Questions tagged [cold-storage]

Secure method of storing Monero such that the private key remains "cold" or never connected to a "hot" wallet or Internet connected device. Cold-storage could include the use of a paper wallet or a hardware wallet to store the private keys

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1answer
29 views

How to perform cold signing with JS?

How can I construct a transaction using a watch only wallet RPC and cold sign using any nodejs library? In the end, I have to send this to the blockchain using the daemon or watch only wallet RPC.
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1answer
40 views

How to send Monero from a cold (paper) wallet via RPC?

I'm generating a wallet address and keys with http://moneroaddress.org. But how can I create, sign and send transactions with NodeJS from this cold wallet?
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0answers
20 views

Android mobile app 'cold' wallets that allow cold signing TXs, saving the file to an SD card and loading updates into it by file?

Can anyone suggest Android mobile app cold wallets that allow cold signing TXs, saving the file to a micro SD card and loading updates into it by file in said SD card? I would be doing this on a ...
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1answer
54 views

Can I generate a spend-proof with a cold-wallet?

I am trying to create a spend-proof on a cold-wallet (an air-gapped laptop), but thought that the wallet might need a connection to a node to create it. Is it possible to exchange data between a view-...
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2answers
37 views

Error with `import_outputs` : `“Failed to decrypt outputs: Failed to authenticate ciphertext”`

We are creating our hot and cold wallets from json files. The cold wallet-json file looks something like this: { "version": 1, "address": "...
2
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1answer
180 views

How does the get_reserve_proof command work?

The documentation of the command is as follows Command usage: get_reserve_proof (all|<amount>) [<message>] Command description: Generate a signature proving that you own at least ...
0
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1answer
31 views

Generating one time use 2FA accounts error

When trying to generate cold wallets using the "Ice Cold Storage, One-Time-Use 2FA Account"; I ran into an error when trying to generate the address. I created a randomly generated address first, but ...
2
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1answer
270 views

Check the Balance of Cold Storage Address - Block Explorer

I’ve realized, if you want to check the balance of a cold storage address, you can setup a view only wallet in the Monero GUI client. How does this compare with using Onion Monero Blockchain ...
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0answers
47 views

Improvements on generating monero wallets securely?

My current process of generating monero wallets: Use an air-gapped RaspberryPi Use monero-wallet-cli to generate a wallet Record mnemonic on paper only Record partial address for reference on paper (...
2
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1answer
78 views

Is it possible to fake the date of arrival of funds?

Let's say I claim I've had X Monero for 1 year in my account and truth is I just received that amount X to my account yesterday. If I'm giving away all (private) keys to that person, he could see the ...
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1answer
157 views

Where can I get a printable version of a Monero Paper Wallet to be used as gifts?

There doesn't seem to be any printable paper wallets like bitaddress.org but for Monero. I only found ones that generate 24 word seeds for your wallet which you have to write down manually. I want to ...
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1answer
242 views

How to pay the import fee from MyMonero.com for a paper wallet?

My current balance shows 0 XMR on MyMonero.com since my account was not yet synced with the blockchain. However, to import transactions, you must pay a fee. I don't have the monero-wallet-cli to use ...
3
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1answer
90 views

Can view-only wallet create unsigned tx via RPC call?

Can I use RPC to get back a string representing the unsigned tx file? I'd like to split an unsigned tx into QR codes, and I'd like my app to run the process instead of parallel user interaction with ...
2
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1answer
557 views

Best practices to keep Monero wallet secure

I'm using a read-only wallet on a computer connected to the Internet, a dedicated local server for the Monero node and I keep on a USB key the full wallet as cold storage to use it only in case. Also, ...
4
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1answer
267 views

How can I submit a transaction created in --do-not-relay mode?

I've created a transaction in wallet started with --do-not-relay switch. It landed in raw_monero_tx file. How can I push it to the network using wallet software? I know about online pushers but want ...
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1answer
77 views

Cold wallet - got the 1 and L mixed up in private view key

I just created a cold wallet on moneroaddress.org I sent some Monero to the wallet. I then tried to check the balance, which required my private view key. It said view key was wrong. I am pretty ...
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2answers
200 views

How long does it take for the coins to go from cold storage into a hot wallet?

I have some monero in a Cold Wallet (paper wallet), I downloaded the Wallet GUI. The wallet is now fully synched... And filled in the 25 word seed, and the block-height (one day before I sent the ...
2
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1answer
127 views

Reading Signed/unsigned tx files

I'd like to transfer files between cold and hot wallets via QR codes. Python can't seem to decode/encode the bytes in the unsigned tx file. Can someone confirm they are mostly binary, and some sort of ...
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0answers
75 views

Error using “import_outputs”: failed to authenticate ciphertext

I'm trying to set up offline signing using CLI. My setup is as follows: I have a fully synced (via remote node) view only wallet on Mac OS X and I have a cold wallet set up on Raspberry Pi (OS: Ubuntu ...
2
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1answer
103 views

Is my hot wallet the only view wallet and my cold wallet the one created offline?

I am a little confuse and concern about my wallet security. I've created a wallet using moneroaddress.org, I went offline and generated a new wallet I saved all my keys and erased my browser history, ...
3
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1answer
151 views

Official encrypted wallet generator

I'd like to make a cold storage wallet such that if it is found it will appear to be an empty wallet unless a password is used to decrypt it. This site xmr.llcoins.net was recommended by moderators, ...
2
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1answer
841 views

Raspberry pi cold wallet safety

I don't have an old computer to make an air gap. I do have a raspberry pi from 2012 though. If I made a new SD card with fresh OS would this be safe enough to make cold wallets on? It would be easy to ...
3
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2answers
183 views

Maximizing privacy when dealing with pre RingCT outputs

When spending from a cold storage wallet with multiple pre RingCT (and no post RingCT) outputs what are the best privacy practices? Spending in this context means the eventual moving of these funds ...
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0answers
208 views

Spending partial amounts from a Monero paper wallet / priv send key using the Monero cli without another computer?

How would one go about spending from a Monero paper wallet / priv send key using the Monero Cli? I want to create unique pub/priv addresses for my users and let them deposit their coins to this ...
4
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1answer
297 views

Cold transaction signing with GUI

Is it possible to safely complete a cold transaction signing process with the official GUI instead of the CLI process described here?
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1answer
723 views

Using the monero cli or gui, how do you sweep all the coins from a private key into your own address?

Lets say I printed out a paper wallet for monero and put it on my website. Now I want to sweep all the coins from this wallet into my own address. How can this be done in the cli and gui? Then I want ...
3
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1answer
2k views

How to check balance of Cold Storage Monero Wallet, easily, when privacy of balance is not an issue?

I am aware similar questions have been asked - but I could not find the exact answer I seek. In the situation of: The user has a cold storage wallet, made on an airgapped computer, and has written ...
2
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0answers
54 views

I only see a part of the transferred amount with my viewkey

I send an XMR amount from an exchange to a cold address. Using the tool xmrchain.net/tx/... I wanted to check if the transaction went well with the viewkey. I only see about 1/3 of the amount as ...
3
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1answer
236 views

Cold Storage, to Hot, to cold?

If I created a paper wallet, then installed the Monero GUI on a PC and imported the wallet from the mnemonic seed... Could I just delete the Monero GUI wallet and wouldn't it just go back to being ...
2
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0answers
54 views

How can I set up cold storage and sign transactions offline? [duplicate]

Need 10 upvotes to post the response with links etc...
15
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4answers
22k views

How can I check the balance of a Monero paper wallet?

If I securely generate a paper wallet address and mnemonic seed, for example using www.moneroaddress.org, and I send a bunch of funds to this paper wallet, how can I check the balance to ensure ...
4
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1answer
749 views

Importing a paper wallet to GUI

I have a paper wallet that I made from moneroaddress and wanted to import it to the GUI. Can I import it by starting up the GUI and clicking, "restore wallet from 25 word mnemonic seed," and entering ...
2
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1answer
215 views

Error with transaction on the blockchain

Today I experienced the strangest error while sending moneros from one wallet to another. So thought I would share and see if anyone knows what was the cause or could shed anymore light on it. Sent ...
7
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1answer
159 views

Can a transaction signed by a cold wallet be broadcast sometime far in the future?

Could someone sign a transaction, encrypt it with a (2,3) Shamir's Secret Sharing scheme with one key to signer, one to trustee and one to beneficiary? Then after death sometime years from now could ...
3
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1answer
365 views

Verifying an AEON transaction sent to cold storage

How can I verify the receipt of AEON sent to cold storage? Does AEON have a view key tool similar to this XMR check transaction tool or this Signed Outputs Public Keys Checker described in this ...
5
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0answers
226 views

Unable to spend from cold storage

I am unable to spend from my offline cold storage, I can see the coins as available on the watch-only wallet. Using the transfer command, I am able to generate an unsigned transaction file. This file ...
6
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3answers
911 views

How can I put my Aeon in Cold Storage?

Has a tutorial been made for putting Aeon in cold storage?
2
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1answer
161 views

Unable to import outputs

I'm following the instructions on here https://monero.stackexchange.com/a/2916 to set up a cold and hot wallet. In the hot wallet I ran export_outputs outs which successfully generated the with the ...
3
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2answers
124 views

How can I check if a key image has been imported into a view wallet?

How can I check if a key image has been successfully imported into a view wallet, particularly a cold wallet that has never spent any of the funds it has received?
4
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2answers
333 views

Verifying Tx to cold wallet

Having some trouble. I have made a few transactions to hot wallets just fine. Balances reflect transactions. Also sent tx to cold storage wallet addresses. Using https://xmrchain.net/ I can see ...
3
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1answer
174 views

Is a cold paper wallet more secure than a cold wallet generated with the CLI or GUI?

There are several posts explaining different approaches to generating an offline wallet. The consensus seems to be that a cold paper wallet is the most secure, but can someone explain why?
12
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4answers
50k views

Is there a tool for making secure cold wallets?

There is a quite long and complex guide on how to make a secure 'cold' or offline wallet on reddit. Is there a quicker and more simple way to do this that takes less time and is less complicated, but ...
4
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3answers
2k views

How to create a view-only wallet for the GUI?

Say I have a cold storage wallet, is there any way I can make a view only wallet with GUI?
12
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1answer
5k views

How to create a cold storage & watch-only wallet

Using monero-wallet-cli, I want to safely create a cold storage wallet and make a watch-only counterpart which I later want to use on my Windows PC to monitor the balance. How can I do this?
5
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1answer
98 views

New Wolfram Warptangent 10.1 cold wallet transaction signing mechanism

According to the Wolfram Warptangent, Point Release 1 notes, Monero has improved and fixed the cold wallet transaction signing mechanism What improvements were made? What are the new cold wallet ...
4
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2answers
1k views

How to create a 12 word brain wallet seed that is compatible with monero-wallet-cli?

I know there is https://xmr.llcoins.net/addresstests.html and https://moneroaddress.org/ but are these good enough rng for creating seed? I hear you could do roll a 6 sided dice 100 times for good ...
1
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1answer
281 views

Can I use a copy of a blockchain created on Mac OS X, on an offline Ubuntu (ARMv7) box?

I created a wallet on an offline/air-gapped Ubuntu box, but my main computer is a Mac. If I want to sync the offline Ubuntu wallet to check the balance, can I use the blockchain created on my Mac? If ...
9
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1answer
2k views

What data do the wallet files contain?

I see 3 files with the name of my wallet: wallet-name, wallet-name.keys, wallet-name.address.txt What is stored inside them? Does the wallet store the public and private keys and nothing else? Or ...
6
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2answers
74 views

Can I retroactively add the spendkey to a watch only wallet?

If yes, how can this be done? The reason being that I want to spend the balance, but I don't want to set the wallet up again and sync it as this takes a while. It's just a time saver I'm hoping for.
2
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1answer
287 views

How to send funds with a watch-only and cold wallet set up?

So I have a cold wallet set up with an online watching only. My question is how do i go about sending funds with this set up? As well as updating the cold wallet balance if that's necessary. This is ...