Newest 'bip38' Questions - Bitcoin Stack Exchange

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]

Solving puzzles for bitcoin.

I entered the rabbit hole more than two years ago. There is not a single day I would not contemplate about Bitcoin and what it means to humanity.
People like @aantonop and @saifedean really gave me a completely new perspective on my day-to-day life. What is and what is not important. Topics like what is money, corrupted pyramid corporate and government structures, time preference, freedom, you name it, are stuck in my head.
After receiving so much from the rich community, I started thinking to myself: “Ask no longer what Bitcoin can do for you — ask what you can do for Bitcoin”.
I was looking around how easily one can get some bitcoin in the bitcoin way. No KYC/AML, age, nationality or other restrictions. All that ads clicking and questionnaire filling were just shady scams. Therefore, I have decided to change that.
I am starting a website where I place puzzles and give a little bitcoin as a reward. There is no registration; no stupid bs. http://www.thebitcoinbounties.com/
How it actually works:
Some little bitcoin is sent to an address with private key protected by a password (BIP38 encrypted). Anyone can get the password by solving a puzzle, swipe it and send it to his own wallet, therefore claiming the reward. Technically, it is a paper wallet, so it really must be spent completely. I have written down two ways how to claim it: https://www.thebitcoinbounties.com/claim-your-reward/. So there is a hint for those how are not that bitcoin savvy.
Ethics and Verifiability.
Anyone can just visit the site, solve the puzzle and get the reward. This way there are no limitations on age, race, county of origin, if you are a human or bot... Like it should be in the bitcoin world.
However, the true is, this is mainly for those who cannot go to exchange and buy some. I hope that these small amounts can change people’s lives in the future.
Even if the bounty was claimed, you could always verify your guesses and that bitcoins are not recycled for next bounties.
Last words:
I do not have a strict budget, time schedule or clean plan we it will go. There is still the first puzzle sitting and nobody has taken the bounty. We will see if this post can kick it a bit 😊.

To all Bitcoin community, thank you.
submitted by bjyYR7ZZvOX371k5 to Bitcoin [link] [comments]

Groestlcoin September 2019 Development Release/Update!

For a more interactive view of changes, click here
In our current world; bordering on financial chaos, with tariff wars, Brexit and hyperinflation rife, you can count on Groestlcoin to consistently produce innovation that strikes to take the power away from the few and into the many, even after a full five and a half years of solid development.
Here is what the team has already announced in the last 3 months since the last development update:

What's Being Released Today?

Groestl Nodes

What am I?

Groestl Nodes aims to map out and compare the status of the Groestlcoin mainnet and testnet networks. Even though these networks share the same protocol, there is currently no way to directly compare these coins in a single location. These statistics are essential to evaluate the relative health of both networks.

Features

Source - Website

Groestlcoin Transaction Tool

What am I?

This is a tool for creating unsigned raw Groestlcoin transactions and also to verify existing transactions by entering in the transaction hex and converting this to a human-readable format to verify that a transaction is correct before it is signed.

Features

SourceDownload

Groestlcoin AGCore

What am I?

AGCore is an Android app designed to make it easier to run a Groestlcoin Core node on always-on Android appliances such as set-top boxes, Android TVs and repurposed tablets/phones. If you are a non-technical user of Groestlcoin and want an Android app that makes it easy to run a Groestlcoin Core node by acting as a wrapper, then AG Core is the right choice for you.

What's Changed?

Source - Download

Groestlcoin Electrum

What's Changed?

Android Electrum-Specific

OSXWindowsWindows StandaloneWindows PortableLinux - Android
Server SourceServer Installer SourceClient SourceIcon SourceLocale Source

Android Wallet – Including Android Wallet Testnet

What am I?

Android Wallet is a BIP-0032 compatible hierarchial deterministic Groestlcoin Wallet, allowing you to send and receive Groestlcoin via QR codes and URI links.

V7.11.1 Changes

Groestlcoin Java Library SourceSource - DownloadTestnet Download

Groestlwallet

What am I?

Groestlwallet is designed to protect you from malware, browser security holes, even physical theft. With AES hardware encryption, app sandboxing, keychain and code signatures, groestlwallet represents a significant security advance over web and desktop wallets, and other mobile platforms.
Simplicity is groestlwallet's core design principle. Because groestlwallet is "deterministic", your balance and entire transaction history can be restored from just your recovery phrase.

iOS 0.7.3 Changes

Android v89 Changes

iOS SourceAndroid Source - Android DownloadiOS Download

Groestlcoinomi Released

What am I?

Groestlcoinomi is a lightweight thin-client Groestlcoin wallet based on a client-server protocol.

Groestlcoinomi v1.1 Desktop Changes

Groestlcoinomi Android v1.6 Changes

Groestlcoin Java Library SourceAndroid Source
Android DownloadWindows DownloadMac OS DownloadLinux Download

Groestlcoin BIP39 Tool

What's Changed?

Source - Download
submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

Best way to invest in Bitcoin?

I have a decent amount of cash stored and would like to drop a significant amount of my surplus into bitcoin for the long haul. what is the most efficient and secure way to do so?
submitted by BravesFan777 to BitcoinBeginners [link] [comments]

Groestlcoin Christmas Release!

Groestlcoin Dec 2018 Christmas Release Update

As per usual the 3 months has been all hand-on-deck, helping to bring further adoption utilities to Groestlcoin. The markets have been red but as always that doesn't stop the show from going on with regards to the development since the last release update on 24th September. Here's a recap of what has happened so far:

Recap:

What’s New Today?

Groestlcoin on Trezor Model T

As of the latest version of the Trezor Model T firmware, Groestlcoin is now officially supported! The Trezor Model T is the next-generation cryptocurrency hardware wallet, designed to be your universal vault for all of your digital assets. Store and encrypt your coins, passwords and other digital keys with confidence. The Trezor Model T now supports over 500 cryptocurrencies.

Blockbook MainNet & TestNet Block Explorer

Blockbook is an open-source Groestlcoin blockchain explorer with complete REST and websocket APIs that can be used for writing web wallets and other apps that need more advanced blockchain queries than provided by groestlcoind RPC.
Blockbook REST API provides you with a convenient, powerful and simple way to read data from the groestlcoin network and with it, build your own services.

Features:

Blockbook is available via https://blockbook.groestlcoin.org/ Testnet: https://blockbook-test.groestlcoin.org/ Source code: https://github.com/Groestlcoin/blockbook

Edge Wallet

Groestlcoin has been added to the Edge wallet for Android and iOS. Edge wallet is secure, private and intuitive. By including support for ShapeShift, Simplex and Changelly, Edge allows you to seamlessly shift between digital currencies, anywhere with an internet connection.

Features:

Android: https://play.google.com/store/apps/details?id=co.edgesecure.app
iOS: https://itunes.apple.com/us/app/edge-bitcoin-wallet/id1344400091?mt=8
Direct Android: https://edge.app/app

CoinID Wallet

We are excited to announce that Groestlcoin has been added to CoinID! With integrated cold and hot wallet support, and a host of other unique wallet features, CoinID can easily become your go-to wallet for storing Groestlcoin. More details can be found here: https://coinid.org/s/groestlcoin-wallet-overview.pdf

Features

Android: https://play.google.com/store/apps/details?id=org.coinid.wallet.grs
iOS: https://itunes.apple.com/us/app/grs-wallet-for-coinid/id1439638550

Groestlcoin Sentinel - Windows Released

Groestlcoin Sentinel is the easiest and fastest way to track balances of your Groestlcoin addresses.
Features
You can download it using the links below.
Download the Windows Wallet (64 bit) here: https://github.com/Groestlcoin/Groestlcoin-Sentinel-Windows/releases/download/1.0/SentinelSetup_x64.msi
Download the Windows Wallet (32 bit) here: https://github.com/Groestlcoin/Groestlcoin-Sentinel-Windows/releases/download/1.0/SentinelSetup_x86.msi
Source code: https://github.com/Groestlcoin/Groestlcoin-Sentinel-Windows/

Groestlcoin BIP39 Tool 0.3.9 Update

The Groestlcoin BIP39 tool is an open-source web tool for converting BIP39 mnemonic codes to addresses and private keys. This enables the greatest security against third-party wallets potentially disappearing – You’ll still have access to your funds thanks to this tool.
What’s New
Download the Groestlcoin BIP39 tool here: https://github.com/Groestlcoin/bip39/archive/master.zip
Source code: https://github.com/groestlcoin/bip39
Or use hosted version: https://groestlcoin.org/bip39/

Electrum-GRS 3.2.3 Update

Electrum-GRS is a lightweight "thin client" Groestlcoin wallet Windows, MacOS and Linux based on a client-server protocol. Its main advantages over the original Groestlcoin client include support for multi-signature wallets and not requiring the download of the entire block chain.
What’s New

Electrum + Android Version 3.2.3:

Android: https://play.google.com/store/apps/details?id=org.groestlcoin.electrumgrs
Windows & OSX: https://github.com/Groestlcoin/electrum-grs/releases/
Linux:
sudo apt-get install python3-setuptools python3-pyqt5 python3-pip python3-dev libssl-dev sudo pip3 install groestlcoin_hash sudo pip3 install https://github.com/Groestlcoin/electrum-grs/releases/download/v3.2.3/Electrum-grs-3.2.3.tar.gz electrum-grs
GitHub Source server: https://github.com/Groestlcoin/electrumx-grs
Github Source server installer: https://github.com/Groestlcoin/electrumx-grs-installer
Github Source client: https://github.com/Groestlcoin/electrum-grs

Groestlcoin ivendPay Integration

ivendPay and Groestlcoin cryptocurrency have announced the start of integration.
IT company ivendPay, the developer of a universal multicurrency payment module for automatic and retail trade, intends to integrate Groestlcoin cryptocurrency — one of the oldest and the most reputable Bitcoin forks into the payment system. Groestlcoin is characterized by instant transactions with almost zero commission and is optimal for mass retail trade where micropayments are mostly used.
According to Sergey Danilov, founder and CEO of ivendPay, Groestlcoin will become the 11th cryptocurrency integrated into the payment module. The first working vending machines for the sale of coffee, snacks and souvenirs, equipped with ivendPay modules, served the visitors of the CryptoEvent RIW exhibition at VDNKh in Moscow and accepted Bitcoin, Go Byte, Dash, Bitcoin Cash, Ethereum, Ethereum Classic, Zcash, Bitcoin Gold, Dogecoin and Emercoin. ivendPay terminals are designed and patented to accept payments in electronic money, cryptocurrencies and cash when connecting the corresponding cash terminal. Payment for the purchase takes a few seconds, the choice of the payment currency occurs at the time of placing the order on the screen, the payment is made by QR-code through the cryptocurrency wallet on the smartphone.
The interest in equipping vending machines with ivendPay terminals has already been shown by the companies of Malaysia and Israel, where first test networks would be installed. ivendPay compiles a waiting list for vending networks interested in buying terminals and searches for an investor to launch industrial production. According to Sergey Danilov, the universal payment terminal ivendPay for the vending machine will cost about $500. The founder of ivendPay has welcomed the appearance of Groestlcoin among integrated cryptocurrencies, as it is another step towards the realization of the basic idea of digital money - free and cross-border access to goods and services for everybody.
submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

Attention anyone with a significant sum of money on an exchange or other web wallet

  1. Go to https://www.bitaddress.org and save the page to a USB stick.
  2. Get a secure, completely offline computer.
  3. Put the USB stick in this computer and open up the page.
  4. Go to the Paper Wallet tab and check the BIP38 box.
  5. Enter a secure pass phrase (write it down someplace safe) and generate your paper wallets.
  6. Print the wallets.
  7. Withdraw your funds from the exchange to the "Load and Verify" QR code.
  8. Put the paper wallet somewhere safe.
Congratulations!
Now you won't become one of these people:
http://www.reddit.com/Bitcoin/comments/1rrnrg/39917_bitcoins_stolen_from_users_of_sheep_market/
http://www.reddit.com/Bitcoin/comments/1rs0bq/woke_up_to_an_email_from_mt_gox_there_has_been_a/
http://www.reddit.com/Bitcoin/comments/1fnna1/53_bitcoins_were_just_stolen_from_my_mt_gox/
http://www.reddit.com/Bitcoin/comments/1li3v9/102_btc_stolen_of_my_blockchain_can_anything_be/
http://www.reddit.com/Bitcoin/comments/1g4vwk/100_bitcoins_stolen_from_my_mtgox_account/
http://www.reddit.com/Bitcoin/comments/1rexob/bitcoin_payment_processor_bips_attacked_over_1m/
http://www.reddit.com/Bitcoin/comments/hzgja/computer_compromised_and_bitcoins_worth_500000/
http://www.reddit.com/Bitcoin/comments/1rjd9d/1295_bitcoins_stolen_in_heist/
http://www.reddit.com/Bitcoin/comments/1r9rtp/i_just_had_39_btc_stolen_from_my_mtgox_account/
If you do choose to leave any bitcoins online, use 2-Factor-Authentication!!!
Thanks to Amanojack for this disclaimer:
Do your own research about change addresses and other technical aspects before attempting to retrieve bitcoins from your paper wallets.
Thanks to kilorat for this reminder:
PRACTICE! Go through all the steps, then make sure you can load up the private key with a wallet software. Then once you know that you are doing it right, destroy the address and make a new one for real.
submitted by PotatoBadger to Bitcoin [link] [comments]

what features do you want in a wallet?

Hello!
Lawrence here, cofounder of GreenAddress, a bitcoin platform that aims to make bitcoin transactions and storage easier, safer and faster.
It has been brought to my attention that this subreddit has quite some power users and that we may be able to offer some features that better cater for traders :)
Is there something specific to your trading activity (as well as normal activity) that you would like to find in a wallet?
Our api and wallets (for windows/mac/linux/android/ios/web) currently features:
We are also integrating instant confirmation with a number of exchanges (and payment processors,ATMs, etc) to allow for instant deposits and withdrawals.
Any suggestion or feature request very welcome!!
Thanks!
Lawrence
edit: grammar and accidentally some words
submitted by BitFast to BitcoinMarkets [link] [comments]

If you don't own the keys, you don't own any Bitcoins

Honestly, how often does this need to be posted? All these people getting their coins stolen from blockchain.info, didn't you learn your lesson from Mt.Gox? I know, I know, blockchain.info is not an exchange. It doesn't matter, you need to own the private key and make sure no one else has access to it. That's the only way your coins are secure. Are you going to post your ATM PIN online?
For long term savings, print a BIP38 paper wallet on an offline computer & printer. If you don't want to go thru the hassle, buy trezor or piper wallet. (I like piper because it let's me print wallets for friends)
For spending, get yourself Breadwallet on iOS or mycelium on android.
DO NOT LEAVE YOUR MONEY ONLINE, ANYWHERE. Not Coinbase, Not Circle, not BlockChain.info, not anywhere but your own wallet created by you. Otherwise, what's the point of owning bitcoin? You're giving the power away by handing your keys to someone else.
submitted by JuryNightFury to Bitcoin [link] [comments]

Advice for Securing Private Segwit Keys needed

I finally found the time to move my BTC to Segwit addresses before doing so I wanted to clarify some security concerns. I know there are many disucssions about this issue. Still I have some questions.
My general strategy is to generate keys only on a linux live system that runs in memory of a machine with no internet connection.
First rule is for me to remember my private keys. In my head they can't be stolen. however they can easily be lost once I am sick or once I die. There is obviously also the possibility that I just forget the key.
Therefor my second strategy is to have some backup of an encrypted version of the key. So I use BIP38 to encrypt my keys with an extremly long passphrase and have some paper printouts of the encrypted keys which I can distribute to several geographically seperated locations. As far as I understand I could even post these printouts here on reddit since they cannot possibly be bruteforced once the passphrase is long enough (which it is)
Just to make sure: When importing the private keys to electrum in this clean linux live system. I can also encrypt the electrum wallet file. which can also be stored on a hard disk and is extremly useless for people without my passphrase. This enables me to even store the keys on a remote server or if I decide to trust Google/Dropbox whomever...I could also post the text of the encrypted wallet file here on reddit as a backup. The idea: The likelihood for the data to be lost will be very small.
However the same problem arises: Without me and the information of the passphrase the private Keys cannot be decrypted.
So what methods do u use to protect your passphrase or share it with trusted family members and so on...?
I know multisig wallets could resolv the problem but in this case I would have to trust several people not to come together and steal my funds. Also I would have to trust them to keep their privat keys very save or be able to pass the private keys on to people in case they are sick or die. The problem is that the people I trust most are not particular tech savvey. (rather the opposite)
Asking these questions and describing the problems I even have the shocking feeling that spreading bitcoins on multiple exchanges might be even more secure :(
Happy for advice and input.
submitted by renepickhardt to Bitcoin [link] [comments]

Easy cold storage for all who keep money on exchanges

There is no reason to trust a third party such as an exchange with your money. Here is how anyone can make their own secure cold storage. All you need is a computer, a blank 1 GB or larger USB drive or a disc burner and either a printer or two or three USB drives of any size. This is not perfect security but it's a lot better than Gox.
Download http://www.linuxliveusb.com and make a bootable USB drive, I suggest Ubuntu and use 64 bit if your motherboard has uEFI. Alternatively, you can download an ISO of the distribution and burn it to a disc. Save a copy of https://www.bitaddress.org/bitaddress.org-v2.8.1-SHA1-a6e63f2712851710255a27fa0f22ef7833c2cd07.html to a USB drive by going to the website and doing File > Save As (HTML only) from your browser. Shutdown and disconnect from the Internet by unplugging any network cables, if applicable, from your computer. Boot the Linux drive and choose to try Linux in live mode. Insert the other drive and copy bitaddress.org.html from your other USB drive to your Home folder and verify the checksum of bitaddress.org.html by opening Terminal and typing shasum bitaddress.org.html, which should give you a result of a6e63f2712851710255a27fa0f22ef7833c2cd07. Double-click the HTML file to open and click on Paper Wallet. Click BIP38 Encrypt, enter a passphrase (do not forget your password!) and click Generate. Either click Print and make two or more copies or select Print to File, format PDF and save this PDF on the other two or three USB drives. Write down your Bitcoin addresses so you can send money to them and check the balance on https://blockchain.info. Shutdown your computer and remove any USB drives before plugging in the network cable. Keep one or two of the USB drives or paper wallets at home and at least one offsite such as at work or in a safety deposit box.
submitted by bitpar to Bitcoin [link] [comments]

08-28 23:32 - 'Question: If I convert all my BCH to BTC today, must I really expose myself through paying approximately $200 per coin in tax? USA.' (self.Bitcoin) by /u/Djndjdppok removed from /r/Bitcoin within 0-7min

'''
I've been considering trading, but I'm not so sure I want to force myself into a situation where I must essentially declare all crypto holdings. I'd rather wait and see what future regulations require. Bitcoin isn't in a bank. It's in my head and on my computer. This is a matter of personal safety for me. Like hiding cash under a mattress, I truly need to keep it hidden. This isn't because I'm a tax-evading criminal. It's because any leak at all is a serious safety concern.
I bring this up because I recently exposed myself to some degree. I lost a USB drive containing some identifying info in the form correspondence I plan to use to prove cost basis when the time comes for me to pay tax on my BTC holdings. I also had some BIP38 paper wallets on that drive with very strong passwords. The drive was unencrypted. Until this point I had only cared about encrypting private keys, but since losing this drive and considering the implications, I am now very careful about my personal info as well. I don't want to be a target of the $5 wrench attack. I don't want my house broken into while I'm gone. And I don't want family harrased nor kidnapped.
If I exchange all my BCH for BTC, must I really pay short term gains This year? That would basically tie a bitcoin holdings lower bound to my name. I'd like to trade all of it, but I'm not so keen on choosing between tax evasion and privacy. Any thoughts?
'''
Question: If I convert all my BCH to BTC today, must I really expose myself through paying approximately $200 per coin in tax? USA.
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Author: Djndjdppok
submitted by removalbot to removalbot [link] [comments]

Can i create a multisig HD wallet on an offline computer?

I usualy store my bitcoins on bip38 paper wallets created on an offline computer. I currently have some bitcoins on a exchange for far too long and I thought this is a good time to upgrade my personal Banking system.
Is it possible to create a multisig HD wallet on a computer not connected to the internet? Can I also password protect a multisig wallet (different password for earch address)?
submitted by shibe05 to Bitcoin [link] [comments]

Mechanics of buying bitcoins

I don't understand the exact process of buying bitcoins. http://www.reddit.com/BitcoinBeginners/comments/23mkh9/buying_bitcoin_with_money_already_in_paypal/ says that no one will use PayPal because you can do a fake chargeback. Ok, so no paypal.
If I go to an online site and, say, want to buy $100 of bitcoin, what is to stop someone from taking my money and never giving me bitcoins? How exactly does it work?
Step 1: I go to site X, set up an account with an online wallet
Step 2: I send $100 from my bank???? to ????
... somehow someone trustworthy takes my $100 and puts the BTC equivalent into my online wallet
Step 9: I immediately move the BTC from my online wallet to an offline one (since BTC exchanges seem to get hacked every year or two).
Other questions:
  1. I don't plan to keep any money in online wallets. I guess the best thing to do is to transfer from my offline wallet to online right before I want to spend BTC. Correct?
  2. I am not that happy about having to download a 14GB blockchain for bitcoin, so I also want to use LiteCoin (it does seem better in other ways too), as well as play around with Dogecoin. Any suggestions about this? Do LiteCoin wallets use different software from BitCoin wallets? I assume that I can store both on the same raspberry Pi.
  3. If I make a wallet using BitAddress.org, can I later encode it with BIP38 or do I have to do this when I create it? (The reason for this question is that I'm thinking of using Armoury, and they don't support BIP38.) Can only paper wallets be encrypted with BIP38?
submitted by mk_gecko to BitcoinBeginners [link] [comments]

03-06 20:17 - '1. - Correct although whilst creating these in a wallet you will only see the public address. You usually need to go through an extra step to view the private key for the public address . In Bitcoin Core you have to export t...' by /u/trousercough removed from /r/Bitcoin within 1-6min

'''
    • Correct although whilst creating these in a wallet you will only see the public address. You usually need to go through an extra step to view the private key for the public address . In Bitcoin Core you have to export the private key with a certain command in the terminal. This is presumably done to make it less likely for a user to copy and paste their private key publicly. The same goes for Monero although the software is quite different and there are some extra features with that coin. For Bitcoin I suggest Electrum wallet for PC, Mycelium for Android and Breadwallet for iOS.
    • Correct. I suggest using bitaddress.org ( download their tool from github ) and TAILS. Create BIP38 encrypted wallets for extra security. Verify everything you download with official signatures. Google is your friend here..
    • Correct. You may view this habit as not ' putting all your eggs in one basket. ' If one wallet is compromised then you only lose a portion of your coins, not the whole lot.
    • Correct you can use this method.
    • Correct. You will pay a commission for every exchange although you may consider registering with an exchange that trades both Bitcoin and Monero. That way you can go straight from cash to Monero and cut out some fees.
Hope this helps.
'''
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Author: trousercough
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Please sticky: how to secure your coins without paper or printers

Apologies for the smartass headline.
This question gets asked a lot, so I thought I'd throw together a rough guide. Please feel free to pole holes in it.
When you hold bitcoin anywhere on the Internet (Coinbase, exchanges, etc) there is always a counterparty risk. This tutorial shows how to create a secure wallet that doesn't need to be printed out.
1) Go to bitaddress.org and download the whole page as an HTML file to your computer. Close your browser.
2) Turn off all networking on your computer. Ethernet, WiFi, etc.
3) Open your local copy of the downloaded bitaddress.org in your browser. Go to the paper wallet tab. Check/select BIP38 encryption.
4) Type in a long passphrase for the encryption. It should be really funky. "I cant get no satisfaction" is a bad choice. Song lyrics, movie dialogue, book passages are generally bad choices. Throw in some capital letters and maybe some numerals or special characters, but don't make it so funky that you can't remember it. If you forget the passphrase, you lose all your bitcoin.
5) Generate 1 or more paper wallets. Copy and paste the public and encrypted private keys into a text file. If you want to also save the QR codes, right-click and choose View Image, then save the result as a file with the extension .png. You now have one or two text files, and .png files for the QR codes if you saved these also.
6) CLEAR THE CACHE ON THE BROWSER. After this, it's safe to re-connect to the Internet.
7) Make multiple copies of everything you just created, text and image files. Copy to more than one machine. If you have Gmail, email them to yourself. If you have cloud storage, put them there. Remember, the two ways to lose your coins are to lose the encrypted private key, or to forget the passphrase.
8) Fund your new wallet(s) by sending your online bitcoin to the public address(es). Confirm that they have been funded by checking their balance(s) on blockchain.info.
That's it!
submitted by palalab to Bitcoin [link] [comments]

Guide: Step by Step Secure Bitcoin Paper Wallet

I am not an expert but i wrote this step by step guide to create a paper wallet. Feel free to point out if i am doing it wrong.
  1. Download Ububtu (http://www.ubuntu.com/download/desktop)
  2. Create a bootable USB stick ( http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-windows)
  3. Boot from the bootable USB. and choose "Try Ubuntu" option.
  4. Once you are in Ubuntu, open firefox and go to https://www.bitaddress.org/ and then disconnect from the internet (disconnect routeunplug ethernet cable).
  5. Click the "Paper Wallet" tab.
  6. Enter the number of wallets you wish to generate.
  7. Check the "BIP38 Encrypt" checkbox and enter a passphrase with special characters, numbers, upper and lowercase letters etc. You will need this passphrase to spend/redeem your bitcoins so MAKE SURE you remember this and WRITE IT DOWN on paper.
  8. Click the "generate" button and it will generate paper wallet(s) with "private key" and "bitcoin address".
  9. Print your wallet(s) on your home (wifi disabled) printer. Don't use your office or public printer.
  10. Now you can send your bitcoins to this "bitcoin address".
When you wish to redeem these coins, you can simply import the private key of the wallet in any online wallet like blockchain.info, coinbase or the Mt.Gox exchange.
Note: The BIP38 encryption adds an additional layer of security to your wallet so in case your paper wallet gets stolen or your private key is exposed, the thief will still need your passphrase to spend your coins.
*Edit: I have edited this tutorial to add additional steps for BIP38 encryption.
submitted by classna to Bitcoin [link] [comments]

Issue with Coinbase "paper wallet import" function.

Just want to share my recent experience of using Coinbase with everyone. This post is rather long so please bear with me.
On 05-Nov-14, redditor “MyDixieWreck4BTC” kindly posted a contest in which a BIP0038 encrypted wallet was posted with a very easy password (which was actually his/her username).
http://www.reddit.com/Bitcoin/comments/2ldjpa/2919_bits_bip38_encrypted/
I saw the contest and was lucky to solve it. I was so happy so I logged in to my coinbase wallet and use the paper wallet import function to import the 2,919 bits. It was successful! However, something very strange happened: There were still 19 bits remained in the wallet! Paper wallet sweep should take everything.
https://blockchain.info/address/1PGRG3C4HNr1KY7N3RFVVmBn6T8tA21gRw
As I am relatively new to bitcoin, and my Coinbase wallet displayed the pending transaction, I thought I will just wait until the 2,919 bits is confirmed in my wallet before thanking MyDixieWreck4BTC for the nice contest. (Thank you for the contest, MyDixieWreck4BTC!)
http://imgur.com/gCm1Cns
However, the transaction remained “pending” for 24 hours and after that disappeared! I was very surprised and so I contacted Coinbase support. After a number of email exchanges, Coinbase support concluded that:
“It appears that for the wallet sweep in question Coinbase was able to initiate a transaction. At the time this happened, the wallet may have still technically held a balance. However, other parties also initiated transactions (as you know), and it appears that their transactions reached confirmation first on the Bitcoin network, leaving your Coinbase transaction unable to be confirmed, since the funds were no longer present.
When a transaction is unconfirmed for 24 hours we remove it from the transaction list automatically, I apologize for any inconvenience this may cause.
That being said, it is not due to a bug with our sweeping procedure, but it is the nature of how bitcoin transactions are created. Many transactions for the same funds can be created at the same time, but only the fastest transaction will be considered valid. We are committed to constantly improving the way Coinbase generates and propagates transactions, but we are limited by the Bitcoin protocol in these matters.”
I am rather disappointed by Coinbase support’s response. If someone else was faster to sweep the wallet, Coinbase’s system shouldn’t have shown the “pending” transaction. Although this was only a $1 equivalent transfer, I just want to share this with everyone and sincerely hope that Coinbase will seriously address the issue.
submitted by bitcoin6518 to Bitcoin [link] [comments]

Wallet For Bitcoin - Being safe with crypto currency (2020 Crypto Hot Tub Talk) Bitcoin - YouTube BITCOIN PRIVATE KEY HACK TOOL 2020 Eyeline Crypto Trading - Official Presentation - YouTube How to purchase bitcoin with Cointree

BIP stands for Bitcoin Improvment Protocol – meaning if you have an idea to make Bitcoin better you can draft it up and if it’s accepted by the community they will start using it. So BIP38 is just the 38th proposal submitted to the Bitcoin Improvement Protocol which is currently adopted by Bitcoin users for protecting their private keys. BIP steht für Bitcoin Improvment Protocol - was bedeutet, wenn du eine Idee hast, Bitcoin besser zu machen, kannst du es ausarbeiten und wenn es von der Community akzeptiert wird, werden sie es benutzen. So ist BIP38 nur der 38. Vorschlag, der dem Bitcoin Improvement Protocol vorgelegt wird, das derzeit von Bitcoin-Nutzern zum Schutz ihrer privaten Schlüssel angenommen wird. Bitcoin is one of the most important inventions in all of human history. For the first time ever, anyone can send or receive any amount of money with anyone else, anywhere on the planet, conveniently and without restriction. It’s the dawn of a better, more free world. Why our Exchange is NON-HACKABLE. Most of the world’s top most exchanges use third party API for faster crypto transactions ... Get Minter (BIP) price, charts, volume, market cap, exchange list and more. 🔥 Out Now 🔥 We've just published the CoinGecko Q3 2020 Crypto Report! Yield farming, the NFT trend and so much more 🔎 EN . Language . English Deutsch Español Français Italiano język polski Limba română Magyar nyelv Nederlands Português Svenska. Tiếng việt Türkçe ру́сский 日本語 ... 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 ...

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Wallet For Bitcoin - Being safe with crypto currency (2020 Crypto Hot Tub Talk)

Cracking Bip38 Encrypted Private Keys of Bitcoins Cracking bitcoin!!!! EASY MONEY! NO CLICK BAIT (2018) Online BitCoin Cracker - 100% Working Why Trump Is No Threat To Bitcoin - Blockstack ICO SEC ... COMING SOON! Email Chad: craigs1669 @ gmail dot com / +1 773- 829 -0737 It is important to understand that in an affiliate plan that offers a crypto trading ... BITCOIN PRIVATE KEY HACK TOOL 2020 #Blockchain hello, guys, I am here with the #private Key #Hacking tool #BTC you can find private key of BTC address by using the software. Download tool: https ... This is a how to video on creating bitcoin paper wallets. While there are other more secure ways of creating paper wallets for bitcoin, the method that I sho... Here I demonstrated transferring Bitcoin from one exchange to another. The concept is just sending bitcoin from one wallet to another. The reason for transferring from exchanges varies, for ...

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