Questions tagged [seed]

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20
votes
4answers
15k views

What is a DNS seed node vs a Seed Node?

I've seen references to both strewn around. Specifically, is there a bitcoin client running at the DNS seeds or seed nodes?
8
votes
4answers
5k views

Is 12-word seed phrase safe enough?

Is 12-word seed phrase (as used by Electrum for example) safe enough for generating an offline wallet? My understanding is this: 2048 words pool make 11 bits of entrophy per word. 12 words in seed ...
7
votes
1answer
741 views

How does the client know the number of keys and coins when recovering from a seed?

When I have a seed and use it to recover my keys, how does a client find out which keys I had and their respective amounts? To clarify, I understand how a deterministic key works and that we can ...
7
votes
2answers
5k views

What are seednodes?

A follow up from a comment on this answer. What are seednodes, and how do they differ from fallback nodes?
7
votes
2answers
8k views

Electrum: “restoring” a wallet from a seed

Suppose I set up a wallet with a deterministic seed passphrase. I then use it, moving bitcoins around, sending some change to change addresses. Electrum will apparently create more addresses when ...
6
votes
4answers
8k views

How do I import a Multibit HD wallet with seeds into Electrum?

I installed Electrum to replace the broken and intolerable Multibit HD. I entered my 18 seed words, but it wouldn't allow me to click Next. I clicked Options > BIP 39 and it enabled Next. It created ...
6
votes
1answer
2k views

How does Electrum make a keypair out of a seed?

Electrum uses a seed of 12 words to generate a keypair and then hierarchically generates addresses out of that keypair. I know how to generate hierarchic addresses from a keypair, but what I don't ...
5
votes
4answers
2k views

Does BIP39 mnemonic construction avoid repeating words?

Will all 24 words of a seed-phrase be unique by specification? Or is it possible for a word to occupy two positions (ie the word "tool" is #8 AND #20 in a valid, securely generated seed)
5
votes
2answers
2k views

Why does electrum need connection to server when recovering a wallet from a seed?

Why does electrum client need connection to server when recovering a wallet from a seed? Isn't the generation of private keys done locally?
5
votes
1answer
74 views

Does this explanation of the security of an electrum seed check out?

The explanation in question is given here and reproduced below as well: Electrum currently use the same wordlist as BIP39 (2048 words). A typical seed has 12 words, which results in 132 bits of ...
5
votes
1answer
335 views

Do we have to trust at least one DNS seed?

If I understand correctly, when new bitcoin node wants to join the network, it must be introduced by guiding nodes -- DNS seeds. DNS seeds can thereafter help new node discover more existing nodes. ...
5
votes
2answers
4k views

Why can the same 12 words produce different seeds in an Electrum wallet file?

I was looking through an Electrum wallet file (from Electrum 1.9.6 for Windows if it matters) trying to understand what information was contained in it, and I couldn't initially figure out exactly ...
4
votes
1answer
4k views

Testing Ledger Nano S wallet seed

Can I test that I've correctly recorded the seed by "restoring" my wallet in a desktop wallet like Electrum by using the seed given to me by my Nano S? It would mirror my hardware wallet, correct? ...
4
votes
1answer
20k views

How to recover an electrum wallet from seed

A service I used some years ago is shutting down. I withdrew some coin but it went to an old address. I believe it was my old electrum wallet that I only have the seed for. How to recover my bitcoin?
4
votes
1answer
4k views

How to generate specific private keys from 12-word backup and wallet address?

A single seed can lead to billions of addresses. Some wallets are unable to scan and find all used addresses. Is it a way to infer the private key from 12-word backup and wallet ID / (public key). ...
4
votes
1answer
1k views

Manually extracting ledger nano s wallet public / private keys using “Mnemonic Code Converter” from ledger

I have the following example seed: morning twist board pelican denial retire middle inherit evil ritual omit fade general toddler grace evoke recipe sad minor destroy public dawn scissors cube ...
3
votes
1answer
3k views

Where can I view my HD wallet seed in bitcoin core 13.2

Where/how do I view my seed in core 13.2? I understand that as of 13.0, the hd wallets are used by default.
3
votes
1answer
2k views

What is a mnemonic frequency analysis and why do I only need 4 letters of my seed words?

Cryptosteel only allows to store the first 4 letters of each word of my mnemonic seed, the FAQ tells me why: [...] you only need to assemble the first 4 letters of each word. Those 4 letters are ...
3
votes
1answer
1k views

What precisely are vSeeds “seednodes”, how to they work, how to create one for a new network?

In this question we have a superficial explanation of vSeeds (seednodes), from the Bitcoin wiki, we have: DNS Addresses Upon startup, if peer node discovery is needed, the client then issues DNS ...
3
votes
1answer
836 views

BIP 32 seed resulting in an invalid private key

everyone. For my final year project, I'm developing some Bitcoin/Bitcoin related technologies (BIP32, BIP 38, BIP39, Bas58Check encoding/decoding, etc) in pure Node.js (using only native libraries, ...
3
votes
1answer
134 views

GetAddr not returning connected node addresses

I am writing a simple program that connects to nodes in order to index them, kind of like blockchain.info nodes works. Doing this in GLang using the btcd/wire library to create the messages, the ...
3
votes
2answers
6k views

How do I import my 12 Breadwallet seed words into Electrum?

When I write them into Electrum during the restore from seed box, the Next button is disabled.
3
votes
2answers
541 views

Same seed from Electrum but generate different Bitcoin addresses

I am using Electrum 3.2.2, I have the wallet file generated from Electrum and a password to decrypt the file. There is an error whenever I am trying to send Bitcoin out of that wallet, so I decide to ...
3
votes
2answers
646 views

backing up 12 seed words vs wallet.dat

I installed electrum created my fist wallet and notice that instead of having to save a wallet.dat file, If I am right I just need to save/write 12 seed words. If I understand properly the seeds ...
3
votes
4answers
1k views

What's the difference between 12 word seed and 24 word seed?

Why was the format switched to 24 words for some newer wallets?
2
votes
2answers
1k views

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?
2
votes
1answer
639 views

BIP deterministic seeds, number of words and compatible wallets

I like to have a list of Bitcoin wallets that accepts various types of deterministic seeds. I have read that some seeds can not be imported in e.g. Electrum of other. So a list with following columns ...
2
votes
1answer
761 views

Why do all Electrum master public keys all start with xpub661MyMwAqRbc?

I was playing around generating wallets using the current version (2.6.4 on Mac OSX) and noticed that each new (standard) wallet I generated had the same start to the master public key: ...
2
votes
1answer
716 views

Importing 24 word mnemonic to bitcoin-qt

How can I import my 24 word mnemonic seed into bitcoin-qt? I think that I will have to convert it to some other format but I don't know how to do that nor what format to use. BIP 39 does not work.
2
votes
2answers
997 views

Is there another wallet that can restore from MultiBit's seed words?

We've had a lot of questions revolving around stuck transactions due to apparently non-existent fee estimation and unconfirmed balance bugs on MultiBit in the past weeks. Some get resolved by using ...
2
votes
1answer
508 views

If I restore my electrum wallet from seed will I lose my pending transaction

So I have seen everywhere that boosting fees can be a scam and I do not have enough techy knowledge to do so anyhow or for that matter to directly delete my transaction using pythonwallet. Whilst ...
2
votes
1answer
564 views

Do I understand correctly that mnemonic seeds are specific to individual wallet software and its versions?

I know mnemonic passphrases are used to derive a master key that can then be used to procedurally generate your addresses. If you lose everything except the mnemonic, you can regenerate everything and ...
2
votes
1answer
1k views

Adding fixed seed nodes as DNS doesn't seem to be available

I am pretty new to bitcoin and I am trying to create a private blockchain by using bitcoind -regtest -daemon. But the executable stops, giving this message: "Adding fixed seed nodes as DNS doesn't ...
2
votes
1answer
231 views

What properties does the DNSSeed list at bitseed.xf2.org attempt to have?

According to bitcoinstats.com: Except for bitseed.xf2.org the seeds aim to return nodes that are currently online and reachable. If the nodes are not aimed to be currently online and reachable, ...
2
votes
1answer
685 views

Address generator for Bitcoin wallet

As describe by Maxwell here in HD wallets assuming we have a key pair with private key SK.a and public key of PK.a and a seed s and a generator point G, we can generate a new key pair of (SK.b, PK.b) ...
2
votes
2answers
1k views

How does a Trezor passphrase prevent restoration of a wallet if an attacker knows the seed?

Trezor User Manual says if you forget the passphrase there will be no way to recover your bitcoins. Not even the Recovery seed. How is it that you (or an attacker who knows the seed) can't just ...
2
votes
1answer
158 views

Seed discovery for bitcoin core client

I just installed bitcoin core client (from github) and started the client. It took around 24 hours to install the full block chain. Where did the blockchain come from? How did did my bitcoin core ...
2
votes
1answer
299 views

Understanding a Wallet Restore

This is my first post on block chain related programming so please excuse my ignorance. I find the terminology in the BIP32 and BIP39 specs hard to understand so I'm trying to confirm my understanding ...
2
votes
1answer
262 views

Is the seed everything I need to recreate a wallet?

During creation of my wallet, I was given a list of 12 words ("the seed") that I scribbled somewhere. Let's assume that I lose all my storage, everything related to my wallet -- except for the seed. ...
2
votes
1answer
312 views

How to let a peer connect to a peer's peer?

I'm testing a new altcoin that I've created between several computers in LAN but encounter a situation as follow: Computer A's client connects to computer B's client through the B's IP in the ...
2
votes
1answer
231 views

Electrum: seed is 0 length . Lost seed

Its been months since Ive used my electrum wallet. When I try and send coin I get an invalid password message. Then when I go to my seed, I type in that same password and it takes me to the seed ...
2
votes
3answers
485 views

What is the secure, self-hosted wallet to redeem BTG (Bitcoin Gold)?

Hacking and being hacked is not cool I'm looking for a decent solution to redeem BTG. Ideally self-hosted and open source. I have 12 words seed phrase, BIP39, deterministic derivation path, etc... ...
2
votes
1answer
741 views

BTG wallet or exchange with BIP39 seed import

Can anyone recommend a Bitcoin Gold exchange or SPV wallet for Linux that supports importing wallets from a BIP39 seed? The best I’ve found so far is a fork of Electrum that supports BTG for Windows ...
2
votes
2answers
4k views

How to convert an Electrum 12 word seed to a private key?

How can I convert an Electrum 12 word seed to a private key? I heard Electrum has a special type of algorithm where the 12 word seed can't be used on other wallet software; is that true?
1
vote
1answer
197 views

How are 21 words seeds generated

Apologies for the noobie question. I was wondering how a range of wallet addresses (eg. BTC address 33ELbMhwHw5AaKHU4u3MzVSFvvK7aa7HZL) is algorithmically converted into seeds (eg. 12 words). Any help?...
1
vote
2answers
1k views

Is it possible to bruteforce the seed?

Is it true that the "seed words" bruteforce more reliable for to get profit than searching of a "random number" for to open some profitable outputs? The last one is impossible due to math, but the ...
1
vote
1answer
422 views

Mnemonic Phrase (BIP39) with Existing Seed Generating Library

The standard BIP39 does three things: 1) Generate 256+8 entropy 2) Generate sentence 3) Derive seed from sentence (using PBKDF2 with HMAC-SHA512). I wonder what would be the security implication ...
1
vote
1answer
334 views

General private/public key generation

Not sure if this is the correct forum to ask, but I couldn't find a general one for all cryptocurrencies I wanted to get an idea on how the whole cold-storage private/public key generation works for ...
1
vote
1answer
109 views

How Bitcoin node discovery work?

When you install Bitcoin client, how does it discover the nodes to get a copy of the blockchain? Are their seed nodes ? Are they vulnérables? SPOF ?
1
vote
1answer
538 views

Algorithm to go from seed to 20 (or more) addresses

I'm currently reading the Electrum sourcecode to figure out how to go from seed (12 words) to addresses (in usual format). Does someone have the big picture of this process in mind? More precisely I'...