Please ELI5: BIP 39/HD Wallets : Bitcoin

09-09 11:02 - 'You download Electrum, opened a new "Standard wallet", and then selected "I already have a seed"? In the options, after entering your 12 word seed, did you select BIP39 seed? / That is exactly how I can restore my Blockchain wal...' by /u/Aerygor removed from /r/Bitcoin within 5-15min

'''
You download Electrum, opened a new "Standard wallet", and then selected "I already have a seed"? In the options, after entering your 12 word seed, did you select BIP39 seed?
That is exactly how I can restore my Blockchain wallet with Electrum.
Edit: and fill in your seed without commas, just the words separated by 1 space.
'''
Context Link
Go1dfish undelete link
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Author: Aerygor
submitted by removalbot to removalbot [link] [comments]

Need some help here

So I sent myself funds from a crypto site and accidentally sent bitcoin cash to a bitcoin address. I have the 12 word phrase and I've done the bip39 recovery tool and couldn't find the address with the private key. On the transaction it shows a new cash address (format:cashaddr) but my legacy address is the bitcoin address. Also, I tried getting through with electron cash but it's only in watch mode. Im emailing support but they're taking awhile. My question is, Is there anything I can do or am I out of luck?
submitted by 48halos to btc [link] [comments]

Danger: Be Careful with Samourai Wallet

The BIP39 derivation key from some versions looks like to be wrong. Previously, I had used the same paper backup to recover it (18 months ago) from an old phone that broke the screen.
Recently I migrated my phone (which bricked) to a new one. Both the backup and the BIP 39 did provide the same set of addresses.
I asked the Support, and for the second time (the first time I payed more than 300$ in fees due to a Replace by Fee order was called as a CPFP without my previous consensus), I had a terrible experience with them, they did not even reply explaining possible solutions.
The aforementioned explanation is what I suggest that happened due to some experience I have as developer.
Another thing I asked them was to provide to me the releases of the previous versions and they said they would not provide that on email. They suggest me to look at their github release (I believe I would be able to compile their project and try to create the Android Apk, but I did not try because it would surely consume time, and luckily I had the option to try with the old screen broken phone).
The repaired old phone had the software installed and configured, then, with the pin I was able to rescue the bitcoins.
In summary, from now on, I do not plan to use none of the softwares developed by them anymore. The communication is terrible and lost my credibility.
I understand that the software is not Beta but some core features should already be stable.
In this sense, it is surely hard to me to keep trusting in their team.
Use hardware or paper wallets (generate public keys offline and save them) if you want to hold as a reserve. If you have recommendation for a trustable Android one it would be good to hear.
submitted by vncoelho to Bitcoin [link] [comments]

A puzzle to celebrate the Halving! Solve it to win the ~0.03 BTC inside.

A puzzle to celebrate the Halving! Solve it to win the ~0.03 BTC inside.
(EDIT now worth ~0.05 (Thanks anon!))
Hello fellow Bitcoiners!
I have hidden the seed to a wallet containing ~0.03 (+ 0.02) BTC inside of my latest album. (It's not much, I am a robot of simple means)
Solve it then sweep the keys!


'Bifurcations' by Logic Beach is a Lo-Fi, Synth-Glitch, experimental project I've put together to celebrate the halving and to have a bit of fun. You will need the Lossless versions of the songs to solve this thing. (download the .wav files).
https://preview.redd.it/fvtegar2xdy41.png?width=2486&format=png&auto=webp&s=f02aef55825dccb854c4826dd00aa5a17d70c60e
Also, check out the Video.
The album is free on BandCamp (just enter $0.00), however if you'd like to make the contest more interesting, I am putting all proceeds into the contest wallet.
If you sweep it make a post here detailing how you solved it! or remain anonymous... I'll post the solution when it's solved.
Adress: bc1qj7467e7r5pdfpypm03wyvguupdrld0ul2gcutg


After due consideration (and constant requests), I have decided to extend this contest until June 21st.

Here is a recap of what is known with some new info:
  • The video has only two words for you. The first is 'Tree' from track 8 and another from track 9. the rest of the video is IRRELEVANT as is the album cover. it was just fun for me to make and watch along with the music, sorry if it ruined your life.
  • You are searching for 12 seed words in the bip39 format. No need to calculate any words.
  • There is an order hidden here. It is not in the lengths of songs or hidden in the rhythms of songs. "hidden" is hardly the right word for how it's placed in this album.
  • Three track names may help you in your search: songs 2,4, and 5
  • Chaos and Logistic maps or any kind of advanced mathematics will not aid you. This is 'Simple'
  • c = 300,000 km/s
  • In track three you may have to make a '-leap' of sorts
  • Morse code will only help you in tracks 1 & 2 visually and audibly
  • There are two words each in tracks 5, 6, and 7.
Alright, final hints here:
*The word in song two is BOMB. It is spelled in Morse by the drums as they pick back up. *The order is also 'hidden' in song 2 *it may be worth looking above and below the speed of light;)
Contest ends tomorrow at 17:00gmt
I'll include some last hints because nobody had found these words.
*Nothing to see in the spectra, nothing to hear in the song. It hexes me to give this one away! Hexadecimal. Bytes. It's there in the data, just make sure you view the data in the right orientation.
*Spectragraphic eyes: You see the two signals in the lowest part of the spectra here? Almost sounds like thunder!
That's it! Some one solved it! 18 confirmations at time of this edit. Well, I will post the solution if you guys are interested.
Nobody reached out to me so I take it they want to stay anonymous.
submitted by logic_beach to Bitcoin [link] [comments]

I restored the wallet - zero balance!

Update: My bad! I forgot the bip39 password!
I have Samourai 0.99.08-gb (version from Samourai homepage) running on one phone. I now installed Samourai 0.99.95t from Goole Play on another phone. There I restored the wallet with the exact same 12 word seed. That was many days ago. Yet, on the new phone it shows no transactions and a zero balance.
How can Samourai exist if the simplest (and most crucial) of all features of any Bitcoin wallet - wallet restore - does not work!?
How can I restore the wallet from the old phone to a new one?
Edit: I restored the same wallet to a fresh mycelium install. Same result there, with same rx addresses as in current Samourai! So the problem seems to be Samourai version 0.99.08-gb!
submitted by Amichateur to Samourai [link] [comments]

Find the seed hidden in this album and win 0.05 BTC! It's still unsolved!

I have hidden the seed to a wallet containing ~0.05 BTC inside of my latest album. (It's not much, I am a robot of simple means)
Solve it then sweep the keys!


'Bifurcations' by Logic Beach is a Lo-Fi, Synth-Glitch, experimental project I've put together to celebrate the halving and to have a bit of fun. You will need the Lossless versions of the songs to solve this thing. (download the .wav files).
https://preview.redd.it/fvtegar2xdy41.png?width=2486&format=png&auto=webp&s=f02aef55825dccb854c4826dd00aa5a17d70c60e
Also, check out the Video.
The album is free on BandCamp (just enter $0.00), however if you'd like to make the contest more interesting, I am putting all proceeds into the contest wallet.
If you sweep it make a post here detailing how you solved it! or remain anonymous... I'll post the solution when it's solved.
Adress: bc1qj7467e7r5pdfpypm03wyvguupdrld0ul2gcutg


After due consideration (and constant requests), I have decided to extend this contest until June 21st.

Here is a recap of what is known with some new info:
submitted by logic_beach to Bitcoin [link] [comments]

Here's my suggested new Trezor setup checklist.

  1. Read the manual: https://wiki.trezor.io/
  2. Upgrade FW to the latest release
  3. Initialize it and write down your seed
  4. Create a 5 or 6 word passphrase using BIP39, or diceware
  5. Ensure your passphrase is less than 50 characters
  6. Enable PIN and passphrase on your device and write it down as well.
  7. (Optional) Create a guessable pin and enable it as your wipe PIN
  8. Enable Account Labeling as a safeguard to mistyped passphrases.
  9. Create a guessable second passphrase (with labeling) as your decoy wallet)
  10. Print your xpub) and keep it with your seed / pin / passphrase
  11. Do a dry-run recovery to ensure your wrote the seed down correctly.
  12. Perform a wipe-device to ensure that recovery brings the proper labeling / xpubs back.
  13. Set up Trezor Password Manager to hold your passwords.
  14. Add Trezor as your U2F device (security key) for your exchanges
  15. Create some SSH keys with your Trezor
  16. (Linux only) Create a GPG key with your Trezor
  17. Move 10% of your coins off of the exchange to your Trezor decoy wallet.
  18. Move the other 90% of your coins to the real (non-decoy) wallet
  19. If thieves ask for your pin and passphrase, give the wipe-pin or decoy-passphrase.
submitted by brianddk to TREZOR [link] [comments]

Ethos wallet issue with transaction fees

Hey guys, so I've made a post on ethos_io but nothing came of it, so I thought to post here in case anyone can help. In case you want to look over that thread here it is: https://www.reddit.com/ethos_io/comments/hrssa4/sending_btc_to_another_wallet_fees/
In short, I have about 100 euro worth of BTC in ethos smart wallet, and now I've decided since its apparently an abandoned project to move to a different one. However, when I get to the screen where I can select the speed of my transaction, even on the cheapest option I get the message that the fees would exceed current balance or something along those general lines.
I've dug around a bit on Google and I found two sites (both links in the other thread) that state the transaction fee for the bitcoin network to be around 1.2 USD. Obviously this is way less than what I have in my wallet and to be frank, Im panik a bit because it wont let me move my bitcoin off the wallet. The app hasnt been updated for a long time, since 2019 I think, so waiting for an update to fix this isnt an option, and Im not too optimistic on contacting their support, if it still exists.
That being my situation, what do you think I can do to get the bitcoin off ethos wallet and onto a new one. By the way, I dont think there is an option to view the keys in ethos, so I cant go that route I think.
I hope there is a way to solve this, 100 euro for me right now is quite a lot of money. Thanks in advance!
Edit: just thought to add a screenshot of the transaction s reen https://imgur.com/a/x4yt98B
Edot 2 (solution): redditofuse's answer solved my problem for me :) on mobile so forgive formatting.
"It looks like Ethos Wallet doesn't use a standard derivation path. Try this recovery tool while offline: https://support.ethos.io/support/solutions/articles/35000082707-how-to-use-the-bip39-recovery-tool also, don't use Blockchain.com to sweep the BTC. Use the recovery tool to find your private keys for each address you have BTC on. Sweep each private key into a new Coinomi wallet. You then should be able to restore the Coinomi wallet onto the Ledger wallet, or you could create a new wallet on the Ledger, and send the BTC from Coinomi to the Ledger."
submitted by promitheas17j to Bitcoin [link] [comments]

After a year of learning & coding I'm super excited to announce the release of Moonshine, a Bitcoin wallet

Github: https://github.com/coreyphillips/moonshine
Website: moonshinewallet.com
iOS: https://apps.apple.com/us/app/moonshine-wallet/id1449385577?ls=1
Android: https://play.google.com/store/apps/details?id=com.kisswallet
Moonshine's key features include:
Special shout-out to the beta testers, amazing developers and people in this space! I sent this message in the last beta build prior to release, but in case you didn't see it:
Thank you for the amazing encouragement, support and critical feedback you have provided throughout the development of Moonshine. I'm constantly surprised how wonderfully supportive and helpful this community is. I have learned so much from everyones sheer willingness to share their knowledge and support. Thank you for helping me learn. Thank you for making Moonshine a joy to develop. Thank you for being awesome.
Now that Moonshine is released I'm looking forward to implementing new features, continue working on bug fixes and ramping up development of it's Bitcoin Lightning-enabled variant, Moonshine Lightning. There's no better way to learn than to build.
Onwards & Upwards!
Edit: Thank you for the gold!
submitted by corey_phillips to Bitcoin [link] [comments]

HowTo: Create and Spend a Electrum Segwit 3of3 Multisig wallet with Trezors

I wrote a simlar post in Bitcoin about creating a MS wallet without a Trezor, this guide will focus on creating a 3of3 MS wallet with three Trezor's. Hopefully it should be obvious how to extend this to N-of-M for any value of N or M. You can also use this as a blueprint to do MS with non-HW Electrum wallets like Android.
It should be noted that this is the most general case method for setting this up. This allows to replace non-HW Electrum wallets into this procedure where HW-wallets are referenced. For the far simpler method, just pick Cosign with hardware device instead of Cosign with key as I outline here. If you choose Cosign with HW you can do the entire process in one wallet file in one session.
The main advantage of multisig is that it reduces the risk of one compromised seed exposing all your funds. Although this is exceedingly complicated, the added layer of complications make it all the more difficult to compromise your funds. Most of the complexity is on the initial wallet setup. Sending is only a bit more complicated, and Receiving is the same as it would be for any electrum wallet.
We will be creating three wallets here, and each will use a Trezor with its own seed, passphrase, and public key (Zpub). If your just wanting to play with this process you could use one Trezor with three different passphrases. Electrum will treat this like three different wallets, since... well since it is. The Zpubs will be calculated by Electrum.
For all references to wallet passphrases or encryption passwords, I highly recommend you generate six-word passphrases. Three simple ways to construct a six-word passphrase would be to either use EFF diceware long wordlist to roll for 6 words, or create a short six-word BIP39 seed and use that as a passphrase, or create a random Electrum seed and use the last 6 words. You will need to take care that all six-word passphrases are equal or less than 50 characters. Longer passphrases can produce some unexpected results. Whenever you need to create a passphrase or password from here on out, create a six-word string as described above.
Assuming your have your Trezors initialized with passphrases enabled, our first order of business will be ensuring the authenticity of Electrum. For the PC's this must be done with PGP/GPG following the procedure spelled out on the Electrum website, or the secondary docs. It is absolutely critical that you are certain your using the correct ThomasV key. As of the time of this writing, the "correct" ThomasV key was:
ThomasV PGP: 6694 D8DE 7BE8 EE56 31BE D950 2BD5 824B 7F94 70E6
Once your Electrum install is validated, here is excruciating detail on creating and spending from a 3of3 multisig wallet. This assumes you have passphrases enabled on all your Trezors and that each has a unique name. For simplicity I will simply refer to their names at "trez-1", "trez-2", and "trez-3"

Three Wallet Creation passes

Do the following first for "trez-1", then for "trez-2" and finally for "trez-3". The order is VERY important:
  1. Wallet->New, name your wallet
  2. Then insert your Trezor ("trez-1", "trez-2", or "trez-3")
  3. Choose Multisig Wallet, then 3of3
  4. Choose Use a hardware device
  5. Select device
  6. Craft (and record) a new 6 word passphrase
  7. Choose Native Segwit derivation
  8. Record Zpub
  9. Unplug your Trezor ("trez-1", "trez-2", or "trez-3")
  10. Choose Add Cosigner Key
  11. Wait at "Add Cosigner 2" dialog

Distribute Zpubs to Finish Wallet Creation

When completing the setup for each wallet below you will be prompted for a wallet encryption password. I recommend you craft a unique six-word string as described above. If Electrum asks to reconnect to your HW wallet simply say "No". You will notice that the order is the reverse of the previous portion. As before, the order is VERY important,.
  1. Swap over to your trez-3 wallet
  2. Click "Enter Cosigner Key"
  3. Enter trez-1 Zpub
  4. Click "Enter Cosigner Key"
  5. Enter trez-2 Zpub
  6. Swap over to your trez-2 wallet
  7. Click "Enter Cosigner Key"
  8. Enter trez-3 Zpub
  9. Click "Enter Cosigner Key"
  10. Enter trez-1 Zpub
  11. Swap over to your trez-1 wallet
  12. Click "Enter Cosigner Key"
  13. Enter trez-2 Zpub
  14. Click "Enter Cosigner Key"
  15. Enter trez-3 Zpub
You can now close each wallet file.
You should now have recorded:
Keep the 12 secrets secure, separate and safe.

Receive funds into your 3of3 MS wallet

Receive just like any other wallet. All three wallets will watch the same set of addresses

Spend funds from your 3of3 MS wallet

  1. Create a TXN as you normally would on your first device
  2. In the TXN dialog hit "Preview" instead of Send
  3. In the Preview screen hit "Sign", then "Export"
  4. Copy the TXN over to your second device
  5. On your second device click Tools->Load Transaction
  6. Enter your partially signed TXN
  7. Verify the Status reads "Partially signed (1/3)"
  8. In the Preview screen hit "Sign", then "Export"
  9. Copy the TXN over to your third device
  10. On your third device click Tools->Load Transaction
  11. Enter your partially signed TXN
  12. Verify the Status reads "Partially signed (2/3)"
  13. In the Preview screen hit "Sign", then "Broadcast"

Conclusion

Certainly more complicated than a non MS wallet, but a lot more secure. Also be aware that the Segwit MS TXNs are about 40% larger than the native Segwit TXNs, so this does generate some additional cost in TXN fees.
submitted by brianddk to TREZOR [link] [comments]

BIP 85: Deterministic Entropy From BIP32 Keychains

BIP 85 defines a way to use a master seed XPRV to derive new BIP39 mnemonic for all your wallets, you can find the pull request here. This BIP will soon be implemented in the ColdCard firmware (pull request merged in master). The principle is to use a derived seed from the master one as randomness to generate new BIP 39 mnemonics on your ColdCard and use them as seed of other wallets.
In practice the implications is less seeds to backup because the mnemonic were derived from the same master key, you don't need to backup the words of your other wallets. This means that you will need to only backup the derivation path used to derive the mnemonics and the master key.
You will basically need to backup only one seed, the one of the (air-gapped) ColdCard you used to derive the mnemonics !
I find this really cool !
The limitation is that you still have to backup the seed of the wallets that don't use BIP32 derivation path like the one of LND.
submitted by Pantamis to Bitcoin [link] [comments]

Sign Into Websites Using Your Crypto Wallet Instead of a Password

good news, everybody!
This is my first post on Reddit and it's in fact a repost from another blogging platform where I activate already.
I was excited since I saw this announcement and I thought to myself what kind of approach should have for this kind of story, but the time passed and nothing brilliant came in my mind and then I figured that the simple things are the best.
So: what are you saying about not being necessary anymore to use or remember a password for logging into different services from websites?
Just remember you have to make online payments, log into your streaming providers, games, utility services, etc. Instead of filling every time a password, you will be able to receive a QR code which will allow to make the login possible.
Look what the Marty Bent podcaster said:
“No more remembering unique passwords for separate sites. No more creating unique email addresses for different services. No more having to worry about the site you are interacting with having your data stolen from them. Pure, self-sovereign control of your accounts across the Internet. No usernames, passwords, or identifying information other than the public key that is derived upon sign up.”
There are more solutions that I discovered:
  1. LNURL protocol
  2. MyDigiPassword - from digibyte development
  3. SQRL
  4. WebAuthn
  5. BitID
If the firts two seems to be more reliable, the last three has some flaws, like vulnerability of anti phishing attacks (for SQRL and BitID) or too complex (WebAuthn). The time will demonstrate which is the best.
In two words (rather minutes), this is how it works:
https://youtu.be/XncWhLni-Ok
Let's see what LNURL people says about it:
The basic idea is that each wallet has a seed, which is a random value (you may think of the BIP39 seed words, for example). Usually from that seed different keys are derived, each of these yielding a Bitcoin address, and also from that same seed may come the keys used to generate and manage Lightning channels. What lnurl-auth does is to generate a new key from that seed, and from that a new key for each service (identified by its domain) you try to authenticate with.
So, from the seed of your wallet will be generated different keys for your different websites you access, so nobody will now you are the same person using all of this services.
I hope this material was useful.
If not, please do a comment, it will help me to develop myself in the future
submitted by ovidiuchise to Crypto_General [link] [comments]

trezor help !!

Hi,
I lost my trezor and will take some times tile i get new one i been having time to access to my funds (bitcoin) tried lot of things then i found they are bip49 i found my adress and when try to backup in blockchain site i don t see my funds .
Any advise on any trusted wallet i can use my privat key that can access to my funds .
Ps : i use bip39-standalone.html to get privat keys of the wallets i have funds using mnemonic !
Any advise will help . Thank you
submitted by StructureMiserable59 to BitcoinBeginners [link] [comments]

lost trezor

Hi,
I lost my trezor and will take some times tile i get new one i been having time to access to my funds (bitcoin) tried lot of things then i found they are bip49 i found my adress and when try to backup in blockchain site i don t see my funds .
Any advise on any trusted wallet i can use my privat key that can access to my funds .
Ps : i use bip39-standalone.html to get privat keys of the wallets i have funds using mnemonic !
Any advise will help . Thank you
submitted by StructureMiserable59 to Bitcoin [link] [comments]

Find the seed hidden in this album and win 0.05 BTC! It's still unsolved!

I have hidden the seed to a wallet containing ~0.05 BTC inside of my latest album. (It's not much, I am a robot of simple means)
Solve it then sweep the keys!

'Bifurcations' by Logic Beach is a Lo-Fi, Synth-Glitch, experimental project I've put together to celebrate the halving and to have a bit of fun. You will need the Lossless versions of the songs to solve this thing. (download the .wav files).
https://preview.redd.it/fvtegar2xdy41.png?width=2486&format=png&auto=webp&s=f02aef55825dccb854c4826dd00aa5a17d70c60e
Also, check out the Video.
The album is free on BandCamp (just enter $0.00), however if you'd like to make the contest more interesting, I am putting all proceeds into the contest wallet.
If you sweep it make a post here detailing how you solved it! or remain anonymous... I'll post the solution when it's solved.
Adress: bc1qj7467e7r5pdfpypm03wyvguupdrld0ul2gcutg

After due consideration (and constant requests), I have decided to extend this contest until June 21st.
Here is a recap of what is known with some new info:
submitted by logic_beach to bitcoinpuzzles [link] [comments]

Ferrum Network Community Update — December 8, 2019

Dear Community,
What an exciting and jammed pack few weeks it has been — with the launch of staking, the 2Key Network partnership, and a major Kudi update — to name a few!
But as the profile of Ferrum continues to grow, it is essential we never stray from the fundamentals that got us this far: hard work, transparency, and a commitment to community.
In this community update, we provide a recap of the last few weeks, and look ahead to a few initiatives we are planning.
Business Update
With the release of the FRM Flexible Staking platform, we took that opportunity to kick the marketing into high gear. These marketing efforts paid off, and we were fortunate to be picked up by top influencers like Teh Moonwalker, Oddgems, and Micro Cap Gems. Here’s what happened the past few weeks.
Tech Update
For those who missed the Tech Update from our CEO Naiem Yeganeh, PhD, here are some highlights:
First Kudi Update
The First Kudi team on the ground in Nigeria continues to make significant progress.
What’s Next
It is critical we capitalize on the attention we have garnered from the team and community efforts, and to start 2020 with a bang. Here are some of the upcoming initiatives we are working on.
Flexible ERC-20 Staking v0.2
We are strongly considering launching another round of staking. We are taking the lessons learned from the first round and improving the experience. Community feedback will be key to make version two even better, so expect to see a series of polls in the coming days.
A Trading Community
A strong group of FRM traders who post technical analysis on social media is great for exposure and great for liquidity. We are currently laying the groundwork to build a trading community to come up with initiatives like trading competitions and special trading rewards. Anyone interested in joining such a community should PM Ian on Telegram.
FRM on Kudi
We have been working hard to add FRM and ETH to the Kudi app so our users can buy it directly with Naira. This will also open up additional utilities for the FRM token, including a premium membership program that will reward users for holding the token and using the app. More details to follow.
Expansion into other Markets
As you may know, one part of our business model is to partner with top notch teams in emerging markets where our fiat gateway + payments app technology can be successful.
We are happy to report that we have started to work with such a team in Brazil and they are in the early stages of launching their own product powered by Ferrum Network. More news to follow.
Conclusion
Thank you all for your continued support of Ferrum Network. 2019 was a really special year that we will never forget. But together we can make 2020 even better!
Very truly yours,
The Ferrum Network Team
Ferrum Network Links:
Website: https://ferrum.network/
Telegram: http://telegram.ferrum.network
Twitter: http://twitter.ferrum.network
LinkedIn: http://linkedin.ferrum.network
YouTube: http://youtube.ferrum.network
Reddit: http://reddit.ferrum.network
Bitcoin Talk: http://bitcointalk.ferrum.network
Facebook: http://facebook.ferrum.network
Github: https://github.com/ferrumnet/
Instagram: http://instagram.ferrum.network
submitted by tentbobert to FerrumNetwork [link] [comments]

Bitcoin / Cryptocurrency Security Is It Possible to Add a Second Layer?

I am kind of new to crypto, less than 1 year. Recently I am playing with Ledger Nano S. I understand that we can openly share the public key, like the bitcoin address. Because there is no way to extract private key from public key.
I understand that I have the back up for my private keys. But still don't feel very safe.
I mean, let's say, by any chance, someone stole my back up phrase, then they can easily steal my crypto and I don't even know it until I check my balance. I know I have to keep my back up phrase safe and private, but there is a chance right?
Other than that, what if, by such a small probability that someone draw 24 random words from BIP39 word list, and it happens to be the same with my back up phrase? I know the probability is very very very low, but still, not 0, right?
I am thinking that, is it possible, in future, crypto like bitcoin, incorporate another layer of security besides private key witness, for example, when anybody move my bitcoin with my private key (I mean the move on blockchain, not within exchange), I will receive an email notification immediately, which has an approval link. Without clicking the approval link, my crypto still can not be spent although it was signed by private key. Just like withdraw from binance or coinbase. Google authenticator is the first layer, the link in email is the second layer. Is it possible in the near future? Or any crypto work like this way please?
submitted by chilianlin87 to Bitcoin [link] [comments]

Best exchange for tiny amounts of fork coins? (BCH, BSV, etc)

A buddy of mine had a pre-SegWit BIP39 seed from a couple years back. I helped him figure it out and sweep his coins to a new bech32 address. For my trouble, he told me I could keep the keys and use them to claim the various Bitcoin forks that have popped up since he bought those coins.
It's not a lot of money by a long shot. My guess is that BCH BSV and BTG combined will net me maybe 20 bucks. But I'm stuck inside on account of this coronavirus thing so I figure I may as well tinker around with blockchains and get myself a 12 pack outta all this. As a boredom buster if nothing else
The problem is the amounts are really small, too small to meet the minimum threshold at Changelly. Also, I know there are a lot of Bitcoin forks but I can't find an exchange that supports half of them. Is there a good exchange for this sort of thing? Preferably without KYC so I don't have to wait for all that to go through? I was hoping to swap them out for BTC or LTC
submitted by spirtdica to CryptoCurrency [link] [comments]

Groestlcoin 6th Anniversary Release

Introduction

Dear Groestlers, it goes without saying that 2020 has been a difficult time for millions of people worldwide. The groestlcoin team would like to take this opportunity to wish everyone our best to everyone coping with the direct and indirect effects of COVID-19. Let it bring out the best in us all and show that collectively, we can conquer anything.
The centralised banks and our national governments are facing unprecedented times with interest rates worldwide dropping to record lows in places. Rest assured that this can only strengthen the fundamentals of all decentralised cryptocurrencies and the vision that was seeded with Satoshi's Bitcoin whitepaper over 10 years ago. Despite everything that has been thrown at us this year, the show must go on and the team will still progress and advance to continue the momentum that we have developed over the past 6 years.
In addition to this, we'd like to remind you all that this is Groestlcoin's 6th Birthday release! In terms of price there have been some crazy highs and lows over the years (with highs of around $2.60 and lows of $0.000077!), but in terms of value– Groestlcoin just keeps getting more valuable! In these uncertain times, one thing remains clear – Groestlcoin will keep going and keep innovating regardless. On with what has been worked on and completed over the past few months.

UPDATED - Groestlcoin Core 2.18.2

This is a major release of Groestlcoin Core with many protocol level improvements and code optimizations, featuring the technical equivalent of Bitcoin v0.18.2 but with Groestlcoin-specific patches. On a general level, most of what is new is a new 'Groestlcoin-wallet' tool which is now distributed alongside Groestlcoin Core's other executables.
NOTE: The 'Account' API has been removed from this version which was typically used in some tip bots. Please ensure you check the release notes from 2.17.2 for details on replacing this functionality.

How to Upgrade?

Windows
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer.
OSX
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), run the dmg and drag Groestlcoin Core to Applications.
Ubuntu
http://groestlcoin.org/forum/index.php?topic=441.0

Other Linux

http://groestlcoin.org/forum/index.php?topic=97.0

Download

Download the Windows Installer (64 bit) here
Download the Windows Installer (32 bit) here
Download the Windows binaries (64 bit) here
Download the Windows binaries (32 bit) here
Download the OSX Installer here
Download the OSX binaries here
Download the Linux binaries (64 bit) here
Download the Linux binaries (32 bit) here
Download the ARM Linux binaries (64 bit) here
Download the ARM Linux binaries (32 bit) here

Source

ALL NEW - Groestlcoin Moonshine iOS/Android Wallet

Built with React Native, Moonshine utilizes Electrum-GRS's JSON-RPC methods to interact with the Groestlcoin network.
GRS Moonshine's intended use is as a hot wallet. Meaning, your keys are only as safe as the device you install this wallet on. As with any hot wallet, please ensure that you keep only a small, responsible amount of Groestlcoin on it at any given time.

Features

Download

iOS
Android

Source

ALL NEW! – HODL GRS Android Wallet

HODL GRS connects directly to the Groestlcoin network using SPV mode and doesn't rely on servers that can be hacked or disabled.
HODL GRS utilizes AES hardware encryption, app sandboxing, and the latest security features to protect users from malware, browser security holes, and even physical theft. Private keys are stored only in the secure enclave of the user's phone, inaccessible to anyone other than the user.
Simplicity and ease-of-use is the core design principle of HODL GRS. A simple recovery phrase (which we call a Backup Recovery Key) is all that is needed to restore the user's wallet if they ever lose or replace their device. HODL GRS is deterministic, which means the user's balance and transaction history can be recovered just from the backup recovery key.

Features

Download

Main Release (Main Net)
Testnet Release

Source

ALL NEW! – GroestlcoinSeed Savior

Groestlcoin Seed Savior is a tool for recovering BIP39 seed phrases.
This tool is meant to help users with recovering a slightly incorrect Groestlcoin mnemonic phrase (AKA backup or seed). You can enter an existing BIP39 mnemonic and get derived addresses in various formats.
To find out if one of the suggested addresses is the right one, you can click on the suggested address to check the address' transaction history on a block explorer.

Features

Live Version (Not Recommended)

https://www.groestlcoin.org/recovery/

Download

https://github.com/Groestlcoin/mnemonic-recovery/archive/master.zip

Source

ALL NEW! – Vanity Search Vanity Address Generator

NOTE: NVidia GPU or any CPU only. AMD graphics cards will not work with this address generator.
VanitySearch is a command-line Segwit-capable vanity Groestlcoin address generator. Add unique flair when you tell people to send Groestlcoin. Alternatively, VanitySearch can be used to generate random addresses offline.
If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then VanitySearch is the right choice for you to create a more personalized address.
VanitySearch is a groestlcoin address prefix finder. If you want to generate safe private keys, use the -s option to enter your passphrase which will be used for generating a base key as for BIP38 standard (VanitySearch.exe -s "My PassPhrase" FXPref). You can also use VanitySearch.exe -ps "My PassPhrase" which will add a crypto secure seed to your passphrase.
VanitySearch may not compute a good grid size for your GPU, so try different values using -g option in order to get the best performances. If you want to use GPUs and CPUs together, you may have best performances by keeping one CPU core for handling GPU(s)/CPU exchanges (use -t option to set the number of CPU threads).

Features

Usage

https://github.com/Groestlcoin/VanitySearch#usage

Download

Source

ALL NEW! – Groestlcoin EasyVanity 2020

Groestlcoin EasyVanity 2020 is a windows app built from the ground-up and makes it easier than ever before to create your very own bespoke bech32 address(es) when whilst not connected to the internet.
If you're tired of the random, cryptic bech32 addresses generated by regular Groestlcoin clients, then Groestlcoin EasyVanity2020 is the right choice for you to create a more personalised bech32 address. This 2020 version uses the new VanitySearch to generate not only legacy addresses (F prefix) but also Bech32 addresses (grs1 prefix).

Features

Download

Source

Remastered! – Groestlcoin WPF Desktop Wallet (v2.19.0.18)

Groestlcoin WPF is an alternative full node client with optional lightweight 'thin-client' mode based on WPF. Windows Presentation Foundation (WPF) is one of Microsoft's latest approaches to a GUI framework, used with the .NET framework. Its main advantages over the original Groestlcoin client include support for exporting blockchain.dat and including a lite wallet mode.
This wallet was previously deprecated but has been brought back to life with modern standards.

Features

Remastered Improvements

Download

Source

ALL NEW! – BIP39 Key Tool

Groestlcoin BIP39 Key Tool is a GUI interface for generating Groestlcoin public and private keys. It is a standalone tool which can be used offline.

Features

Download

Windows
Linux :
 pip3 install -r requirements.txt python3 bip39\_gui.py 

Source

ALL NEW! – Electrum Personal Server

Groestlcoin Electrum Personal Server aims to make using Electrum Groestlcoin wallet more secure and more private. It makes it easy to connect your Electrum-GRS wallet to your own full node.
It is an implementation of the Electrum-grs server protocol which fulfils the specific need of using the Electrum-grs wallet backed by a full node, but without the heavyweight server backend, for a single user. It allows the user to benefit from all Groestlcoin Core's resource-saving features like pruning, blocks only and disabled txindex. All Electrum-GRS's feature-richness like hardware wallet integration, multi-signature wallets, offline signing, seed recovery phrases, coin control and so on can still be used, but connected only to the user's own full node.
Full node wallets are important in Groestlcoin because they are a big part of what makes the system be trust-less. No longer do people have to trust a financial institution like a bank or PayPal, they can run software on their own computers. If Groestlcoin is digital gold, then a full node wallet is your own personal goldsmith who checks for you that received payments are genuine.
Full node wallets are also important for privacy. Using Electrum-GRS under default configuration requires it to send (hashes of) all your Groestlcoin addresses to some server. That server can then easily spy on your transactions. Full node wallets like Groestlcoin Electrum Personal Server would download the entire blockchain and scan it for the user's own addresses, and therefore don't reveal to anyone else which Groestlcoin addresses they are interested in.
Groestlcoin Electrum Personal Server can also broadcast transactions through Tor which improves privacy by resisting traffic analysis for broadcasted transactions which can link the IP address of the user to the transaction. If enabled this would happen transparently whenever the user simply clicks "Send" on a transaction in Electrum-grs wallet.
Note: Currently Groestlcoin Electrum Personal Server can only accept one connection at a time.

Features

Download

Windows
Linux / OSX (Instructions)

Source

UPDATED – Android Wallet 7.38.1 - Main Net + Test Net

The app allows you to send and receive Groestlcoin on your device using QR codes and URI links.
When using this app, please back up your wallet and email them to yourself! This will save your wallet in a password protected file. Then your coins can be retrieved even if you lose your phone.

Changes

Download

Main Net
Main Net (FDroid)
Test Net

Source

UPDATED – Groestlcoin Sentinel 3.5.06 (Android)

Groestlcoin Sentinel is a great solution for anyone who wants the convenience and utility of a hot wallet for receiving payments directly into their cold storage (or hardware wallets).
Sentinel accepts XPUB's, YPUB'S, ZPUB's and individual Groestlcoin address. Once added you will be able to view balances, view transactions, and (in the case of XPUB's, YPUB's and ZPUB's) deterministically generate addresses for that wallet.
Groestlcoin Sentinel is a fork of Groestlcoin Samourai Wallet with all spending and transaction building code removed.

Changes

Download

Source

UPDATED – P2Pool Test Net

Changes

Download

Pre-Hosted Testnet P2Pool is available via http://testp2pool.groestlcoin.org:21330/static/

Source

submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

How secure is my plan: I want to generate a long-term cold storage wallet using Ian Colemans tool and regular dice

Hi there!
I have been into Bitcoin for a few years now, but I took a break from the topic and didn't keep up to date with the latest technology. When I was still active, paper wallets were still the hot new stuff!
I do own a Trezor Model T, but I want to be EXTRA paranoid and not trust the hardware wallet to generate a wallet for me. The chances of this are slim, but what if the hardware was modified to generate a wallet that another party has access to?
Now, I want to generate a highly secure long-term cold storage wallet for a relatively large amount of Bitcoin and only rely on myself. I already read quite a bit about the topic, but because of my inexperience I have a hard time understanding just how secure the method really is.
Then I found this video:
https://www.youtube.com/watch?v=j5nejoEGWFw
He generates the mnemonic by rolling dice and putting in the results as entropy into Ian Coleman's tool. From that, I created a plan that currently looks like this:
  1. How do I use the test vectors to validate Ian Colemans tool and where can I find them?
  2. Are regular dice rolls "secure enough" for this in terms of entropy and the guess of somebody guessing it?
  3. Does it make sense to use some more sources of randomness, like keyboard mashing and data from https://www.random.org that I have copied offline?
  4. Can I simply import the generated mnemonic into a hardware wallet like Trezor?
  5. Is the mnemonic (24 words) really enough to restore the wallet or do I need something else?
  6. Are change addresses handled with this or will some spare change be sent to other addresses I (maybe) dont control?
  7. Is there any way somebody could get access to my wallet if I only access it from the Trezor Wallet website and without exporting the private keys anywhere?
Thank you guys for your help, I really appreciate it! :)
submitted by climateimpact827 to BitcoinBeginners [link] [comments]

Question about some old seeds I found - I need your expert opinions!

I found some old seeds.
1) I found two seeds that are each 12 words. I opened up electrum and I clicked that I already have a seed. I entered in my seed words. I had to change it to be BIP39 address in order for electrum to allow me to click next. But when I logged in nothing really happened. No transactions. No coins. Did I do this right? Neither of those seeds show anything received or sent which doesn't seem correct. I think one of these was to a jax wallet and the other may have been to a "blockchain" account.

2)I also found a log in/password for CRYPTSY but I assume that they already stole all my stuff. I've known about that for a while. Any news on this? Pretty sure I'd be retired because I was holding a ton of DARKCOIN which became DASH but whatever.

3) I also found a log in for what I wrote as "blockchain wallet". But when I go to blockchain.net or blockchain.com it asks me for both a "wallet ID" which I don't have. I just have a password. https://login.blockchain.com/#/login
When I tried to use the "lost email" link and I punched in my emails it doesn't seem like I received anything to my known emails. Any thoughts?

4) I also have a seed that doesn't make any sense. It has 17 words. One of the words is written poorly by me as "donner". Another one of the words is written as "hogans". Wtf? What could this seed have gone to?

5) I have a written down log in/ password for a website called "CRYPTOLIFE.NET". I don't remember using that site at all and if you asked me today I would say that I had never heard of it. But here it is in my writing - a log in - next to the word "cryptolife.net". I went to their website and I couldn't figure out how to log in.

My impression is that there may be nothing here. If my memory serves me I had taken all the bitcoin out of these wallets/exchanges and put everything on cryptsy. However, there could be some dust or maybe like .05 bitcoin or something and I'd love to retrieve it. Any ideas?

Thanks for the help team!
submitted by Benjamincito to BitcoinBeginners [link] [comments]

PSA: Guide on how to recover your lost Segwit coins using Electron Cash

How to get your recovered SegWit funds using Electron Cash

Background

Thousands of BCH on thousands of coins that were accidentally send to Segwit 3xxx addresses were recovered by BTC.TOP in block 582705.
This was a wonderful service to the community. This had to be done quickly as the coins were anyone can spend and needed to be sent somewhere. This all had to be done before thieves could get their dirty paws on them.
So.. How were they recovered? Did BTC.TOP just take the coins for themselves? NO: They were not taken by BTC.TOP. This would be wrong (morally), and would open them up to liability and other shenanigans (legally).
Instead --BTC.TOP acted quickly and did the legally responsible thing with minimal liability. They were sent on to the intended destination address of the SegWit transaction (if translated to BCH normal address).
This means BTC.TOP did not steal your coins and/or does not have custody of your funds!
But this does mean you now need to figure out how to get the private key associated with where they were sent -- in order to unlock the funds. (Which will be covered below).
Discussions on why this was the most responsible thing to do and why it was done this way are available upon request. Or you can search this subreddit to get to them.

Ok, so BTC.TOP doesn't have them -- who does?

You do (if they were sent to you)! Or -- the person / address they were sent to does!

HUH?

The Segwit transactions have a bad/crazy/messed-up format which contains an output (destination) which contains a hash of a public key inside. So they "sort of" contain a regular bitcoin address inside of them, with other Segwit garbage around them. This hash was decoded and translated to a regular BCH address, and the funds were sent there.
Again: The funds were forwarded on to a regular BCH address where they are safe. They are now guarded by a private key -- where they were not before (before they were "anyone can spend"). It can be argued this is the only reasonable thing to have done with them (legally and morally) -- continue to send them to their intended destination. This standard, if it's good enough for the US Post Office and Federal Mail, is good enough here. It's better than them being stolen.

Ok, I get it... they are on a regular BCH address now. The address of the destination of the Tx, is it?

Yes. So now a regular BCH private key (rather than anyone can spend) is needed to spend them further. Thus the Segwit destination address you sent them to initially was effectively translated to a BCH regular address. It's as if you posted a parcel with the wrong ZIP code on it -- but the USPS was nice enough to figure that out and send it to where you intended it to go.

Why do it this way and not return to sender?

Because of the ambiguity present-- it's not entirely clear which sender to return them to. There is too much ambiguity there, and would have led to many inputs not being recovered in a proper manner. More discussion on this is available upon request.

Purpose of this guide

This document explains how to:
Complications to watch out for:

Step 1: Checking where your coins went

To verify if this recovery touched one of your lost coins: look for the transaction that spent your coins and open it on bch.btc.com explorer.

Normal aka "P2PKH"

Let’s take this one for example.
Observe the input says:
P2SH 160014d376cf1baff9eeed943d58551d53c48377adb98c 
And the output says:
P2PKH OP_DUP OP_HASH160 d376cf1baff9eeed943d58551d53c48377adb98c OP_EQUALVERIFY OP_CHECKSIG 
Notice a pattern?
The fact that these two highlighted hexadecimal strings are the same means that the funds were forwarded to the identical public key, and can be spent by the private key (corresponding to that public key) if it is imported into a Bitcoin Cash wallet.

Multisig aka "P2SH"

If the input starts with “P2SH 220020…”, as in this example, then your segwit address is a script -- probably a multisignature. While the input says “P2SH 22002019aa2610492ee2c18605597136294596d4f0f9bc6ce0974ed3a975d65da4ca1e”, the output says “P2SH OP_HASH160 21bdc73fb15b3bb7bd1be365e92447dc2a44e662 OP_EQUAL”. These two strings actually correspond to the same script, but they are different in content and length due to segwit’s design. However, you just need to RIPEMD160 hash the first string and compare to the second -- you can check this by entering the input string (after the 220020 part) into this website’s Binary Hash field and checking the resulting RIPEMD160 hash. The resulting hash is 21bdc73fb15b3bb7bd1be365e92447dc2a44e662, which corresponds to the output hex above, and this means the coins were forwarded to the same spending script but in "non-segwit form". You will need to re-assemble the same multi-signature setup and enough private keys on a Bitcoin Cash wallet. (Sorry for the succinct explanation here. Ask in the comments for more details perhaps.)

No match -- what?!

If the string does not match (identically in the Normal case above, or after properly hashing in the Multisig case above), then your coins were sent elsewhere, possibly even taken by an anonymous miner. :'(

Step 2: How To Do the Recovery

Recover "Normal" address transactions (P2PKH above)

This is for recoveries where the input string started with “160014”.
Option 1 (BIP39 seed):
Option 2 (single key):
Option 3 (xprv -- many keys):
Code:
mkey = "yprvAJ48Yvx71CKa6a6P8Sk78nkSF7iqqaRob1FN7Jxsqm3L52K8XmZ7EtEzPzTUWXAaHNfN4DFAuP4cdM38yrE6j3YifV8i954hyD5rhPyUNVP" from electroncash.bitcoin import DecodeBase58Check, EncodeBase58Check EncodeBase58Check(b'\x04\x88\xad\xe4'+DecodeBase58Check(mkey)[4:]) 
Option 4 (hardware wallet):

How to Recover Multisignature wallets (P2WSH-in-P2SH in segwit parlance)

This is for recoveries where the input string started with "220020.
Please read the above instructions for how to import single keys. You will need to do similar but taking care to reproduce the same set of multisignature keys as you had in the BTC wallet. Note that Electron Cash does not support single-key multisignature, so you need to use the BIP39 / xprv approach.
If you don’t observe the correct address in Electron Cash, then check the list of public keys by right clicking on an address, and compare it to the list seen in your BTC wallet. Also ensure that the number of required signers is identical.
submitted by NilacTheGrim to btc [link] [comments]

Optional BIP39 passphrase in bitcoin wallet. - YouTube BIP39 Bitcoin Private Key and Aeternity Key Translate Help ... diybitcoinhardware - YouTube Bip39: le Crypto Wallets. Was hat es mit den 12 oder 24 Wörter auf sich? BIP32, BIP39, BIP44

Now live, Satoshi Pulse. A comprehensive, real-time listing of the cryptocurrency market. View prices, charts, transaction volumes, and more for the top 500 cryptocurrencies trading today. People who are paying attention to the ongoing Bitcoin fork debate might have noticed that the community speaks a lot about a term called “BIP”.. You will see abbreviations of such BIPs (like SegWit, SegWit2x, BIP 141, BIP 91, etc.) littered all over the internet. And it’s no exaggeration in saying that these terms don’t help most users because they don’t understand what the heck a ... Bitcoin Improvement Proposals. Contribute to bitcoin/bips development by creating an account on GitHub. BIP39 Mnemonic phrase is a list of words that store all the information needed for the recovery of a Bitcoin wallet.Usually, a wallet generates a mnemonic backup phrase by itself, so that the user could write it down on paper. If the user’s computer is broken or its hard disk is damaged, he will be able to upload the same wallet and use the paper backup copy to get his Bitcoins back. Bitcoin News BIP39 Bug Does Not Affect Bitcoin Wallet Balances, Fix Is Imminent JP Buntinx · February 23, 2017 · 11:00 am. Bank Sponsored. Find a bug in any software is not all that uncommon ...

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Optional BIP39 passphrase in bitcoin wallet. - YouTube

Bitcoin improvement proposal (BIP) 91, solved bitcoins scaling problem by adding a piece of code to each new block of bitcoins they generate. Will bitcoin Sp... Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Keep all your crypto safe & upgrade to a Ledger Nano X Hardware Wallet https://shop.ledger.com/pages/ledger-nano-x?r=5243ecbb8427 Alternatively, if you prefe... Uno dei primi aspetti a generare confusione nei neofiti sono quelle "12 o 24 paroline" che vengono presentate alla generazione del primo #wallet di #bitcoin o #ethereum. Abbiamo parlato in passato ... bip 396 12 words, 18 words, 24 words, scrambled words into a valid mnemonic.

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