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Questions tagged [brain-wallet]

A brain wallet refers to the concept of storing Bitcoins in one's own mind by memorizing a mnemonic recovery phrase. If the mnemonic is not recorded anywhere, the Bitcoins can be thought of as being held only in the mind of the owner. If a brain wallet is forgotten or the person dies or is permanently incapacitated, the Bitcoins are lost forever.

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Import brainwallet.io Address to Bitcoin Core [duplicate]

A while ago I created an address and private key on brainwallet.io now I would like to add those to my bitcoin-qt wallet. I don't see an easy way to do that in the interface nor with the cli importXXX ...
William Rusnack's user avatar
1 vote
2 answers
612 views

How (un)safe is it to use non-random seed words?

Suppose someone chooses to use a seed (mnemonic) that is easy to memorise, like true kid true kid true kid true kid true kid true kid - using a passphrase, of course. The benefit is clear: he'd only ...
room101's user avatar
  • 11
0 votes
1 answer
347 views

Can I create my own 24 word system using JavaScript or Ruby?

Ledger Nano X has a 24 word system. So can I create this system on my own computer? And I can use 3 words, 9 words, 24 words, just by a method like the following? Say, for simplicity, if it is 3 ...
nonopolarity's user avatar
0 votes
1 answer
160 views

Transfer from old brainwallet to Trezor

I have an old Bitcoin brainwallet that I created a few years ago (before any forks) with almost 1 BTC in it. I know it's not a lot, but I decided to get a Trezor as a safer storage method. I now ...
J. Sutter's user avatar
2 votes
1 answer
1k views

How to create a brainwallet with bitcoinjs?

This is how to create a brainwallet with bitcore const Bitcore = require("bitcore-lib"); // const Mnemonic = require("bitcore-mnemonic"); // https://bitcore.io/api/lib/crypto let brainsrc= 'satoshi' ...
TSR's user avatar
  • 143
1 vote
1 answer
420 views

Benefits of generate address from sha256 hash than random address

Is there any benefits (eg: better security) of generate a address from SHA 256 hash vs generate a random hash? Generate adress from a SHA 256 hash var value = Buffer.from('correct horse battery ...
vincentsty's user avatar
0 votes
3 answers
2k views

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 ...
Yura's user avatar
  • 117
1 vote
4 answers
2k views

Generating a segwit (bc1) address from a brain wallet?

Are there any brain wallet generators that can generate segwit (bc1) addresses yet?
Patoshi パトシ's user avatar
4 votes
1 answer
1k views

The warpwallet challenge 2

here you can find a public challenge aimed to brute force a brain wallet private key, derived from 8 char long [a-zA-Z0-9] passphrase with a salt of "[email protected]". Is it possible to adapt an hashing ...
cesko80's user avatar
  • 41
0 votes
1 answer
387 views

Cryptocurrency Wallet Seed - mental backup?

Ok, so let's say I use a wallet that gave me a 12 word string as a seed. And I want to do a paper and "mental" backup - will write it down and will memorize the words. Where is the itch? Well, the ...
Admir T.'s user avatar
-1 votes
2 answers
1k views

Is there a litecoin / dogecoin scrypt brain wallet generator like the one made for BTC warp wallet?

Has there been other litecoin / dogecoin brain wallet implementations besides bitaddress? I don't feel bitaddress.org's brain wallet generator is secure enough as compared to Warp Wallet scrypt ...
Patoshi パトシ's user avatar
4 votes
3 answers
12k views

How does one create a brain wallet from a seed using SHA256?

How does one create a brain wallet from a seed using SHA256? Is this possible? Could you please explain using the example seed "coinbase is awesome" (no apostrophes)? What is the resulting address?
user289394's user avatar
1 vote
1 answer
1k views

Is there a javascript library for generating litecoin address from a string?

Is there a bitcoinjs equivalent for litecoin? I want to be able to generate a litecoin address using a long string.
Patoshi パトシ's user avatar
1 vote
2 answers
281 views

Are there any other brain wallet generators like warp wallet?

I'm looking for brain wallet implementations like warp wallet. Are there other brain wallet implementations that involve stressing the computer in order to generate a bitcoin address?
Patoshi パトシ's user avatar
0 votes
1 answer
183 views

Can you combine 2 of 3 brain wallet addresses to form a multi-address?

Is there a way to use 2 of 3 brain wallet addresses to create a multi-signature address? How can this be done? I was hoping to do this with warp wallet if that is possible or not. I'm assuming it ...
Patoshi パトシ's user avatar
3 votes
2 answers
1k views

Private Brain Key Generation and Public Address Not Matching Java

I am trying to generate a public and private key set from a input string in Java. (Yes I am aware this can be a dangerous practice) I am using bitcoinj for a outside library. I currently have: //...
John Down's user avatar
  • 131
5 votes
6 answers
3k views

Why are brain wallets not secure? People keep saying it, but explain to me why?

Everyone keeps saying brain wallets are insecure. Can someone explain to me WHY? What if I had a brain wallet that is 200 characters long which is the concatenation of all of my family members names ...
Patoshi パトシ's user avatar
4 votes
1 answer
208 views

Would it be wise and extra secure to use non-ascii characters in a brain wallet?

What are some pitfalls if you use non-standard ascii characters in your brainwallet? Say if you were to use asian language characters? Or even extended ascii characters (http://www.theasciicode.com.ar/...
Patoshi パトシ's user avatar
0 votes
1 answer
139 views

Can you use non-standard characters for creating a Bitcoin Brain Wallet?

Can you use non-standard characters to create a bitcoin brain wallet? Ex. Chinese characters, ascii characters using the numberpad with ALT key. Is there downsides to this?
Patoshi パトシ's user avatar
0 votes
2 answers
1k views

What is the max character limit when creating a Bitcoin Brain Wallet?

I'm thinking of using a brain wallet for btc storage. Yes i know all the talk about it being insecure. But what if I used a bunch of information that only I would know making a >100 character brain ...
Patoshi パトシ's user avatar
3 votes
3 answers
348 views

Is this brainwallet approach safe enough?

Let's suppose I derive a private-public keypair from a passphrase like this : long_and_complex_enough_but_yet_easy_to_remember_passphrase Now I wish to generate 100 more keypairs using same ...
Gustavo's user avatar
  • 31
8 votes
5 answers
3k views

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 ...
Tor's user avatar
  • 81
1 vote
1 answer
210 views

Compressed keys default for brainwallet?

I'm somewhat confused re compressed addresses... Assuming I were to make a brainwallet using "correct horse battery staple" as my passphrase gives 1JwSSubhmg6iPtRjtyqhUYYH7bZg3Lfy1T (uncompressed ...
Wizard Of Ozzie's user avatar
3 votes
1 answer
686 views

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 ...
Patoshi パトシ's user avatar
2 votes
1 answer
394 views

brainwallet.org Low Entropy Generation

I was reading that brainwallet.org uses low-entropy RNGs, so any address generated using their website will be unsafe. I used their website to make a cold storage address last December, and so far no ...
lurf jurv's user avatar
  • 2,714
3 votes
2 answers
2k views

Can ASIC miners easily be used to guess brainwallet passphrases?

After reading the Bitcoin wiki page for brainwallets it seems to me that mining equipment can be used to brute force brainwallet passphrases. Is this correct? "...so hackers can collectively try ...
Anders Braüner Nielsen's user avatar
2 votes
2 answers
354 views

What if the brain wallet is just a memorable private key itself?

A brain wallet usually applies a hash function on a passphrase to derive the private key. But what if the private key itself is memorable and we just use the private key as the brain wallet? For ...
uminatsu's user avatar
  • 1,079
1 vote
1 answer
198 views

Trying to calculate the strength of a brainwallet created with a custom diceware

I want to create a brainwallet using a custom diceware since I don't like the original one. Instead of 7776 words it has 46656 because I use 6 dice for each word instead of 5. So this is what I got ...
ChocoDeveloper's user avatar
6 votes
1 answer
3k views

Is there a way to generate a brain wallet from the command line or console?

Is there complete solution for console to generate brain wallet? Something like: echo "sausage" | xxd -r -p | sha256sum | awk '{print $1}' | rmd160 -x | blablabla I'm read this article: https://en....
0 votes
3 answers
1k views

Are there standardized ways of generating wallets from passphrases?

Brainwallet is a well-known tool that lets you generate an address from a passphrase. I think Brainwallet just performs a single SHA256 hash on the passphrase to get the 256-bit private key of the ...
Steven Roose's user avatar
  • 11.8k
1 vote
1 answer
238 views

Is there any statistical analysis of the security of a "Brain Wallet"?

Assume that a transaction is paid to a brain wallet address. (not P2SH, or M of N) Is there any statistical approximation (or tiers of approximation) of how secure a Brain Wallet is to A key ...
makerofthings7's user avatar
1 vote
2 answers
893 views

How are brain wallets generated?

How do sites like blockchain.info and bitaddress.org generate private keys by simply hashing a string? (the passphrase?) In this wiki article, https://en.bitcoin.it/wiki/...
pinhead's user avatar
  • 5,154
5 votes
2 answers
2k views

Compressed or uncompressed for brainwallet?

When creating a brain wallet, should I choose the compressed or uncompressed version? Why? What happens if I choose the uncompressed version (which is what the official client uses, right?), and ...
ChocoDeveloper's user avatar
0 votes
2 answers
154 views

Would this wallet backup system work?

I was thinking about a possibility to overcome the 'only stored on one PC' wallet problem! I erase or lose my PC, then I lose all my bitcoins. Suppose that the wallet, associated with an account ...
stighy's user avatar
  • 171
4 votes
2 answers
2k views

How long would it take to crack an 8-word brain wallet?

Assuming my private key for a bitcoin wallet is derived from SHA256(passphrase) and the passphrase is 8 words long, how long would it take the average attacker to crack my bitcoin wallet through a ...
DavyJonesFootLocker's user avatar
6 votes
1 answer
4k views

How do I consolidate all my BTC into a single address?

I'd like to archive all my coins in a single address (specifically the address for a "brain wallet"). What is the most effective way to combine all the outstanding balances into a given address?
makerofthings7's user avatar
15 votes
5 answers
5k views

How safe is a brain wallet?

Edit: The answer is that they are unsafe and have been attacked. Please don't use them! Brain wallets can be created with a (minimum 15 character) pass phrase at https://www.bitaddress.org There are ...
Highly Irregular's user avatar