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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]

Putting the fun back into FUNgibility (full node, JM, and yield generator)

I'm new to BTC (<1 year) and not a blockchain guru, but I started stacking sats as an alternative investment. I'm not retiring off my crypto anytime soon, but its enough value that I want to increase my BTC security and competency (currently stored in an exchange wallet like a pleb). I was on the verge of moving everything into cold storage, but then I found JM through Googling keywords along the lines of "bitcoin income generation."
I've been studying up on JM for the last 48h, and decided to: build a full node, create a JM wallet, start running yield-generator. Even though it sounds like income will be zero or close to zero, I hope it will be a fun learning project.
I'm going to go out right now to buy some hardware components and will continue to update this thread after each milestone. I'm expecting to learn a lot through this process so I am making this post so that others can learn from my inevitable mistakes, and a place to ask for help if I run into problems.
Stay tuned for updates!

Update 1: Shopping completed. I'm going with a Raspberry Pi with 4GB of ram, 0.5TB external SSD to store the blockchain. I bought a couple of accessories to help me set up the environment (keyboard, mouse, lcd, usb hub). I also bought a pimoroni fan shim to make sure nothing overheats. I'll be using my windows laptop for initial setup as well. Next step is hardware setup and software environment (Raspian, fan service controller, and hdd partition). Image of all hardware components: https://imgur.com/aKlJ3LD
Update 2: Good success with the hardware portion of the project. After I got my OS running I immediately nuked my SD card by running fstab without reading man first - classic. I wasted an hour trying to recover, then reflashed my OS and got everything running. First I got the fan service controller working, then formatted external hdd for ext4 (came with ntfs from the store), setup firewall and tor, and installed bitcoind. The next step is to finish allowing my blockchain to sync, and then test all functionality before starting with joinmarket. Results: https://imgur.com/a/sE1f1ap
Update 3: It is taking a long time to fully sync to the network so I decided to install but not configure JM during this lag time. I successfully installed JM, but I decided to call it quits for today before editing joinmarket.cfg. I was hoping to be completely done today but I lost several hours due to my own incompetence. I should have enough time during the week to continue this project, so I will check back in tomorrow. Does anyone have advice on joinmarket.cfg settings for tor? Current status: https://imgur.com/1Tp7kJN
Update 4: After a long delay due to lack of time during work, I finally got everything working 100%. Due to privacy and security advice from friends, I will not be posting any specific information about my JM wallet, but it is up and running and able to submit and participate in coinjoins - very exciting! I'm going to start learning about payjoin next. Thank you to Joinmarket creators and community for helping me through this process... I will continue to provide new content in the future with any significant updates to either joinmarket code base or to my own setup.
submitted by FUNgibility21 to joinmarket [link] [comments]

Cryptocurrency Terms And Definitions - Common Crypto Words To Know

The blockchain community is not left out when it comes to the use of jargon and phrases. The use of words that look strange to those who are not involved in crypto is totally inevitable. It’s definitely going to be difficult for anyone not in this space to understand words like “ERC20, ICO or gas. So in order to help such people out, we have made a list of the most common cryptocurrency terms and definitions. Please sit back and enjoy your ride.

Cryptocurrency Terms And Definitions
One can categorize these terms into various parts. First of all, we will deal with general cryptocurrency terms and definitions.

Blockchain
Blockchains are distributed ledgers which are secured by cryptography. Everyone has access to read the information on every blockchain which means they are essentially public databases but the data update can only be done by the data owners. In the case of blockchains, data doesn’t remain on a single centralized server, they are copied across hundreds of thousands of computers worldwide. Projects such as Ethereum, Vechain, EOS etc. fall under this class of technology.
Mining: The means of trying to ‘solve’ the next available block. One needs huge amounts of computer processing power to carry this out effectively. There is always a reward for doing this.
Mining rig: A specially designed computer that processes proof-of-work blockchains such as Ethereum. They consist of multiple high-end graphic processors (GPUs) so as to maximize their processing power.
Node: This is a computer that has a copy of the blockchain and is working to keep it in a good shape.
PoW: The full meaning of this is Proof-of-work. The Ethereum network currently makes use of this algorithm.
PoS: Its full meaning is Proof-of-stake. It is the proposed future algorithm for Ethereum. Those that own ETH will be able to lock up all or a portion of their ether for a given amount of time in order to ‘vote’ and generate network consensus instead of mining in its current form. Stakeholders will get rewards in form of ETH by doing so.
Fork: This takes places when a certain blockchain splits into two different chains. This usually happens in the crypto space when new ‘governance rules’ are infused into the blockchain’s code.
Software wallet: A crypto-currency storage that exists purely on a computer as software files. You can generate these kinds of wallets for free from diverse sources. MyEtherWallet (MEW) is one of the most popular sources around.
Hardware wallet: A device that one can securely keep cryptocurrency. People often say that these wallets are the most secure way to store cryptocurrency. Examples of the most common hardware wallet models around are Ledger Nano S and Trezor.
Cold storage: This is a way of moving your cryptocurrency from an online wallet to an offline one, as a means of safekeeping them from hack. There are a lot of ways to carry this out. Some methods that are commonly used include:
· Using a hardware wallet to store your cryptocurrency.
· By printing out the QR code of a software wallet and keeping it somewhere which is safe.
· You can also move the files of a software wallet onto an external storage device such as USB drive and keeping it somewhere safe.

Trading Related Cryptocurrency Terms And Definitions
Exchange: These are websites where people trade (buy and sell) their cryptocurrencies. Some of the popular crypto exchanges we have around include Binance, Poloniex, Bittrex etc.
Market order / market buy / market sell: A sale or purchase which is made on an exchange at the current price. A market buy acquires the cheapest Bitcoin available on the order book while a market sell fills up the most high-priced buy order on the books.
Limit order / limit buy / limit sell: These are orders which are placed by traders to buy or sell a cryptocurrency when the price reaches a certain amount. They are pretty much like ‘for-sale’ signs you see on goods.
Sell wall / buy wall: Cryptocurrency traders are able to see the current limit buy and sell points using a depth chart. The chart’s graphical representation is very much like a wall.
FIAT: Refer to a government-issued currency. An example is the US dollar.
Whale: A person who owns huge amounts of cryptocurrency.
Margin trading: This is an act of increasing the intensity of a trade by using your existing coins. It is very risky for an inexperienced trader to partake in this. Stay safe!!
Going long: This is a margin trade that gives profit if the price goes up.
Going short: It is a margin trade that gives profit if the price goes down.
Bullish: Being optimistic that the price of cryptocurrency is going to increase.
Bearish: This is an expectation that the price of cryptocurrency is going to decrease.
ATH: This simply means All-Time-High. This is the highest point that has been reached by a particular coin or token. Take for instance, Bitcoin’s ATH is about $20,000 and this was achieved around December 2017 and January 2018.
Altcoin: A word used to qualify other cryptocurrencies which is not Bitcoin. Examples of altcoins are Ripple, NEO, EOS, Vechain, Electroneum etc.
Tokens: These are ‘currency’ of projects which are hosted on the ethereum network. They raise money by issuing their own tokens to the general public. Tokens have a significant use in the project's ecosystem. Examples of tokens are Enjin Coin (ENJ), Zilliqa (ZIL), OmiseGO (OMG), Augur (REP) etc.
ICO: The full meaning is Initial Coin Offering. This is synonymous to an IPO in the non-crypto world. Startups give out their own token in exchange for Bitcoin or ether.
Shilling / pumping: An act of advertising another cryptocurrency. It is mostly done in a way that tricks as many people as possible into believing that a coin or token will get to a higher price in the future.
Market Cap: This is the total value of a cryptocurrency. To calculate this, one has to multiply the total supply of coins by the current market price. You can get a run-down of several cryptocurrency projects on Coinmarketcap.
Stable coin: This is a cryptocurrency which has an extremely low volatility. You can use a stable coin to trade against the overall crypto market.
Arbitrage: A situation where a trader takes advantage of a difference in the price of the same coin / token on two different exchanges.
FOMO: Simply means Fear Of Missing Out. That overwhelming feeling that one needs to get on board when there is a massive rise in the price of a commodity. This is also applicable in the crypto space.
FUD: Fear, Uncertainty, and Doubt. It is a baseless negativity which is spread intentionally by someone or a group of people who want the price of cryptocurrency to decrease.
FUDster: A person who spreads FUD.
Pump And Dump: This happens when an altcoin gets a ton of attention, leading to a massive increase in price, and likewise followed by a big price crash of that altcoin.
ROI: Return on Investment. The percentage profit a trader makes on an initial investment (i.e. A 100% ROI simply indicates that a trader doubled his money).
TA: Trend Analysis or Technical Analysis. A way of examining current coin charts so as to make predictions for the next market movement.

Next, we will be moving on to crytocurrency terms and definitions that are ethereum related.
Dapp: Decentralized Application. It is an application that uses a decentralized peer-to-peer network like Ethereum smart contract as its back-end code.
Bagholder: A person who still holds on to a particular altcoin despite having a pump and dump crash.
Smart contract: This is a code that is deployed onto the Ethereum blockchain, it often helps with the direct interaction of how money flows from one point to another.
The Flippening: A future event showing the capacity of Ethereum’s market cap (or some other cryptocurrency) surpassing Bitcoin’s market cap, making Ethereum the most ‘valuable’ crypto-currency.
Gas: It is a measurement of the amount of processing needed by the ethereum network to execute a transaction. More complex transactions like deploying a smart contract onto the network requires more gas than sending ether from one wallet to another which is obviously a simpler operation.
Gas price: This is the amount of ether an initiator of a transaction is willing to spend for each gas unit on a transaction. The higher the gas price, then the faster the processing of the transaction.
Wei: It is the smallest denomination of ether.
Gwei: This is a denomination of ether (ETH). Gwei is the unit for measuring gas prices. 1 Ether = 1,000,000,000 Gwei (109).
MEW: MyEtherWallet is a site where users can generate ethereum wallets for free.

We also have a handful of cryptocurrency terms and definitions that are memes. See some of them below;
Hodl: People use this word when signifying that a person is keeping his coins / tokens for a long period of time. A couple of years back, someone on a Bitcoin forum made a post with a typo HODL in place of HOLD. Ever since then, this term has become one of the most popularly used term in crypto.
Mooning: In crypto, this term comes to play when the price of cryptocurrencies move up astronomically.
Lambo: This is highly synonymous with crypto. You can't leave out this word when discussing about cryptocurrency terms and definitions. This is the car we’re all goona buy when crypto makes us rich.
This is gentlemen: People use this phrase when pointing out positive things that are currently taking place in the cryptosphere.

Now that you are conversant with some of the commonly used cryptocurrency terms and definitions, you can now go out there and showcase your new crypto vocabulary to the world.
submitted by Satonova19 to u/Satonova19 [link] [comments]

using old phone for cold storage

I am a new bitcoiner of about two weeks and I have successfully bought $5 worth of bitcoin with a debit card using a coinbase account, then used an old offline phone to generate an offline bitaddress with public and private keys, transferred the money from coinbase to the cold wallet account with complete air gap data transfer, then saved all public and private key data to an existing sd card in the hand held offline device., then used the cold offline device to check balance of funds previously transfered from coinbase, using devices screen qr code, which I scanned with my online phone using the app "bit balance", I can now see on my phone the balances of my offline address without releasing the private key ever. . and then I transfered some of the the portable cold wallet funds back online to my Mycelium wallet using said Screen QR, . . The rest which I havent transferred back stayed in offline cold storage which is backed up to an sd card. Very easy to do once I figured it out.
Why? . . I am seeing a few advantages to this over a computer that generates offline paper wallet. one is security. . suppose I have funds on a paper wallet in my house, or I am using it to go to a coffee shop to make a transaction, . . suppose my house is robbed (yes I can keep paper wallets in a safe deposit box) , so suppose on the way to make a transaction at a coffee shop that my paper gets lost, (I stupidly drop it or my wallet gets pick pocketed) , or my house gets robbed. . with a paper wallet. . who ever finds the paper can immediately transfer funds, . so once i get to the coffee shop and realize i have lost the paper, by the time i go back home and get the backup info, the funds have had plenty of time to be transferred. . where as if i lost my cold phone wallet, the theif or luck person finding it must first unlock my phone with the screen unlock pattern, then passwords, encryption, etc, . giving me plenty of time to go back and get my backup and transfer those funds away myself first, . I also can backup all my info using a usb cord to an offline computer or sd card and also print paper copies myself, . then store those backups in a safe deposit box.
Another advantage is I can see is that in one small totally offline device, I can generate QR codes, save and record address2key generation, transfer data through air gap, create graphic paper wallets, and transfer that through sd card.,manage records of buys and sells for tax records, (and back up to sd) all one one small portable device.
How I did it. . . I used my wifes old samsung sch1200 that was laying around the house. (she loved that phone) . It is in excellent working condition and the battery holds an excellent charge,. especially since it is no longer transmitting data, . this phone also has an external sd card slot
A, first remove the phone sim card, usually behind the battery,
  1. I did a factory reset on it to restore it to original condition and to remove all previously installed programs
  2. Used the wifi to get online from a place i considered secure
    3, I had to update google play store and enter a valid google account
    4 downloaded apps from the play store. "opera mini web browser", "QRDroid"
  3. Using Opera mini I went to bitaddress.org and saved the page for offline use
  4. took phone offline by halting wifi and bluetooth and putting it in airplane mode. also delete the google account you used to get onto google play and tell your phone to forget the wifi you used to get online, (if you are still worried you can probably root the device etc.)
  5. while offline I opened Opera and opened the bitaddress page i saved offline and generated a bitcoin account with keys, (this was a frustrating part and i learned during the random mouse generation to touch and swipe up)
  6. after generating an account I held down on the character string that was generated for the public key and with the option told it to share that to qrDroid, Then told qrDroid to save it. . (did the same for the private key,) I then also copied the character string to a word processor for an additional backup method and record keeping.
  7. opened qrDroid and went to the options and opened up history, opened up the public key and choose the show qr option, . using that qr I transferred the funds from coinbase onto the cold wallet account, then used the same qr code online to check the account, . both of these were done with my online phone, . the account balance showed a successful transfer, . .
  8. opened up qrdroid and put the cold wallet qr private code on screen, then using my online phone scanned the qr and tranferred those funds to my Mycelium account.
  9. backed up my data and put my totally offline cold wallet phone away
    just saying after alot of trying different apps it can now be easily done, i can back up data onto paper and sd card and put it in a safe deposit box, i can keep my cold storage at home knowing it has passwords and confidential swipes and or encryption to open, and I can now make a second always blank one to take to the coffee shop for transactions with nothing on it but the current single qr code i want to use.
I can forsee a simple appstore app which further simplifies this process in a single app which tracks finances, scans and creates offline keys, etc, . so one could easily make a user friendly cold wallet with beginning instructions, load it with $5 and give it to someone to try out bitcoin, . it works with most online existing exchanges and wallets easily and provides easy cold wallet storage and backup capabilities for the average joe
also i make no guaranties, this is devlelopemental and issues can occur, so you do so at your own risk, I am using it right now in testing phase only and only currently moving small amounts of currency i am not afraid to lose, . but so far for me its working very well.
I am somewhat new at bitcoin so if anyone knows where I am going wrong or finds any issues please let me know, .
submitted by eclecticuniversalas to Bitcoin [link] [comments]

Life After theToken Sale, how to protect your coins

Over the past months a large number of incidents occurred in relation to the violation of the security of exchanges and the abduction of funds in the cryptoworld. Two South Korean exchanges — Coinrail and Bithumb — were attacked, from which 37 and 31 million dollars were stolen respectively.
At the beginning of our token sale that runs till August, 27 2018, the Ubcoin Market team has already told contributors how to protect themselves from scammers. But the question remains, how can you save your digital coins after purchasing bitcoins or altcoins? We will talk about this now!
1 — Offline Wallets. There are 3 types of them — cold, hardware and paper.
1.1 — Cold (software) wallets funds can be transferred into warm wallets (connected to the Internet) at the time of the transaction. Here is a vulnerable place when the scammers can find a hole in the code and use it to steal funds from the wallet. To protect fans of local wallets from scam it is highly recommended to install a reliable anti-virus on the PC. Free and trial versions of antiviruses rarely give good protection, so it’s better to spend some money to buy a licensed program and save money in your wallet. Among the constantly growing number of cold wallets firms, there are 2 most popular and often used — Electrum and Exodus. Electrum has a wide functionality, Exodus — user-friendly interface. The choice of altcoins in both of them is still small, but they gradually increase their number.
1.2 — Hardware wallets — these are the most reliable way to store coins today. It can be compared with a safe, in which under several locks (private keys and pin-codes), your funds are stored. Your coins are kept on a physical device without direct access to the Internet. For operations with crypto currency or fiat it is necessary to connect it to a PC or phone and enter a private key. And the device itself is also protected by a personal code, which gives a security guarantee when it’s stolen or lost. Such a wallet can be connected even to an unprotected or hacked computer, and the scammers can not steal the funds!
The most popular models of hardware wallets are Trezor, Keepkey and Ledger Nano S. All of them have a general principle of generating private keys in offline mode, equipped with a display for better usability and are of small size (Ledger Nano S — almost a USB flash drive). This kind of wallet is good in everything, its security is the highest among all other types of electronic coins storage, and the only drawback is the price of the devices — about $ 90 for each of these models.
1.3 — Paper Wallets — grandmother’s way, which still works! The private key is simply printed or written on paper, is hidden somewhere offline and waits there for a hour X away from the Internet. No matter how surprisingly this may sound at the age of high technology, many experienced programmers prefer to store their keys this way.
2 — Wallet Diversification This method is relevant not only for the crypto currency, but for all types of investments in general. It is not necessary to keep all virtual or fiat money in one place, it is better to distribute them among several deposits and wallets, shifting that part of the funds that you do not yet plan to use soon to a hardware wallet.
3 — Wallet Backup If you make this simple and quick action in advance, then in case of loss / theft of your PC or mobile phone, you can pull out a backup of your wallet with all of your funds. When creating wallets, all private keys are stored only by their owners, therefore no one of support people can help you to return access to your coins if you do not have a backup of your wallet. To create such a backup, simply copy your program file to an external storage device and put it in a safe place.
4 — Protection of Communication Channels By connecting to wi-fi in a public place (cafe or park), you can not be sure of providing a high level of security for your connection. Scammers easily recognize the information entered during the authorization, including logins, passwords and private keys. What happens next — you probably already guessed. The way out of this situation is to use checked and protected communication channels (reliable Internet connection) only.
submitted by Ubcoin to CryptoCurrency [link] [comments]

'What's wrong with my current cold storage method?' - an examination of potential weaknesses in the most common cold storage methods

Today we are going to discuss cold storage and some specific problems with cold storage. While this applies directly to the Secret Key portion of a key-pair; it also applies to the seed used to back up HD wallets and hardware wallets.
The best way to keep you seed/secret key safe is to have multiple copies in multiple locations perhaps with multiple formats and even better if the keys are split. However not everyone has access to multiple locations, or access to land long term, or more than one place to store their things. This is an examination of faults with individual methods; and not a comprehensive plan, obviously.
Not to say everything is all bad but there are many potential weakness out there, and some in the Bitcoin and crypto community like to know the edge cases of things.
I will also highlight some of the aspects of the Keyois Capsule which is a 'physical bitcoin'.
A physical Bitcoin is a cryptographic key pair, a physical key printed and affixed to what has always been before a coin. The first physical bitcoin coin was the Casascius coin, since then the world of physical bitcoin coins has blossomed as a fun part of the Bitcoin world.
We will focus on mediums relating to cold storage and not ones designed for more everyday use, but this applies to the seed you save to keep your everyday spending wallets safe and backed up.
We will assume you generated your keys securely and that you already have them on some medium. We will also have to ignore endpoint physical security because they can all be carried away the same. Remember your cell phone /hardware wallet/ computer client are only as good as where you put the backup seed phrase, which can be thought of as data much like the SK discussed below.
Written on a piece of paper
Printed on a piece of paper
On laminated paper
Engraved / etched/ ablated/ stamped on a piece of metal
Stored digitally on a computer
Stored digitally on CD, floppy disk, laserdisc, or mini-disc
Stored digitally on a flash drive
Backups are essential for digital data Computer code for performing operations can be corrupted in transfer or in operation. Special systems exist and procedures help data to last longer. For ideas, see this archive.gov page Remember to store in multiple locations. You can lose everything in single structure
A physical bitcoin coin
**What can solve most of these problems? A combination of good backup procedures and encryption. **
If you have permeant access to more than one location (people who live in big cities, without family or cars have a hard time with this) or have people you trust with your money (don't) then look into using some form of Multi-signature option.
The Keyois Capsule is a crypto piggy bank; it can be funded from the outside but you to break it open to get them out. You give me a BIP38 encrypted key pair (well the address not the public key) and I engrave it in this tamper evident and time resistant package. You still have to hold on to the pass phrase that allows you to decrypt it; that is however the same problem as all methods with BIP38 encryption. How to store this without having to trust anyone but still being assured of it's security?
  • Engraving, embossing, or stamping on a sheet of metal is one option; however the metals that are easiest to stamp are ones that melt in a house fire. They could be put in a glass jar that's filled with aerogel and buried. These is the best readily available option for most people but it really can be tedious. - This puts you back at anyone who can see it can steal it so dip in plastic dip, wrap in duct tape, bake in clay, encase in concrete, whatever just don't leave unencrypted keys visible!
  • The cryptosteel is another ready-made option
  • Have the words etched onto glass at home with off the shelf products; but be carful of this idea because the glass can shatter from impact and heat or even sudden temperature changes
  • Anodize the words yourself on a pieces of metal, there used to be a service to help use your home printer to print the words with some chemicals you can buy
  • Bake them in clay, then encase that in epoxy resin so it can't shatter. then paint the outside, in the future you can solvent the paint off and see the written seed
  • Use a combination of techniques to split the seed so that it is safe(because split and separated) and redundant (because backed up).
The most cost effective way for a 'normal' person (without their own land, without more than one location, and who cannot trust anyone else with their funds) to keep their backup seed/ secret key safe from damage from the elements would probably to buy a stamping kit and hammer and some stainless steel sheet or bar, Aluminium can be okay if you have the right alloy but better safe than sorry.
submitted by ProfBitcoin to Bitcoin [link] [comments]

'What is wrong with my current cold storage method' - an examination of potential weaknesses in the most common cold storage methods

Today we are going to discuss cold storage and some specific problems with cold storage. While this applies directly to the Secret Key portion of a key-pair; it also applies to the seed used to back up HD wallets and hardware wallets.
Not to say everything is all bad but there are many potential weakness out there, and some in the Bitcoin and crypto community like to know the edge cases of things.
I will also highlight some of the aspects of the Keyois Capsule which is a 'physical bitcoin'.
A physical Bitcoin is a cryptographic key pair, a physical key printed and affixed to what has always been before a coin. The first physical bitcoin coin was the Casascius coin, since then the world of physical bitcoin coins has blossomed as a fun part of the Bitcoin world.
We will focus on mediums relating to cold storage and not ones designed for more everyday use, but this applies to the seed you save to keep your everyday spending wallets safe and backed up.
We will assume you generated your keys securely and that you already have them on some medium. We will also have to ignore endpoint physical security because they can all be carried away the same. Remember your cell phone /hardware wallet/ computer client are only as good as where you put the backup seed phrase, which can be thought of as data much like the SK discussed below.
Written on a piece of paper
Printed on a piece of paper
On laminated paper
Engraved / etched/ ablated/ stamped on a piece of metal
Stored digitally on a computer
Stored digitally on CD, floppy disk, laserdisc, or mini-disc
Stored digitally on a flash drive
Backups are essential for digital data Computer code for performing operations can be corrupted in transfer or in operation. Special systems exist and procedures help data to last longer. For ideas, see this archive.gov page Remember to store in multiple locations. You can lose everything in single structure
A physical bitcoin coin
What can solve most of these problems? A combination of good backup procedures and encryption.
If you have permeant access to more than one location (people who live in big cities, without family or cars have a hard time with this) or have people you trust with your money (don't) then look into using some form of Multi-signature option.
The Keyois Capsule is a crypto piggy bank; it can be funded from the outside but you to break it open to get them out. You give me a BIP38 encrypted key pair (well the address not the public key) and I engrave it in this tamper evident and time resistant package. You still have to hold on to the pass phrase that allows you to decrypt it; that is however the same problem as all methods with BIP38 encryption. How to store this without having to trust anyone but still being assured of it's security?
  • Engraving, embossing, or stamping on a sheet of metal is one option; however the metals that are easiest to stamp are ones that melt in a house fire. They could be put in a glass jar that's filled with aerogel and buried. These is the best readily available option for most people but it really can be tedious.
  • The cryptosteel is another ready-made option
  • Have the words etched onto glass at home with off the shelf products; but be carful of this idea because the glass can shatter from impact and heat or even sudden temperature changes
  • Anodize the words yourself on a pieces of metal, there used to be a service to help use your home printer to print the words with some chemicals you can buy
  • Bake them in clay, then encase that in epoxy resin so it can't shatter. then paint the outside, in the future you can solvent the paint off and see the written seed
  • Use a combination of techniques to split the seed so that it is safe(because split and separated) and redundant (because backed up).
Characters stamped on Aluminium is probably the most cost effective way to keep a secret key or seed safe from fire and rot.
submitted by ProfBitcoin to btc [link] [comments]

Life After the Token Sale. How to Protect Your Coins?

Over the past months a large number of incidents occurred in relation to the violation of the security of exchanges and the abduction of funds in the cryptoworld. Two South Korean exchanges — Coinrail and Bithumb — were attacked, from which 37 and 31 million dollars were stolen respectively.
At the beginning of our token sale that runs till August, 27 2018, the Ubcoin Market team has already told contributors how to protect themselves from scammers. But the question remains, how can you save your digital coins after purchasing bitcoins or altcoins? We will talk about this now!
1 — Offline Wallets. There are 3 types of them — cold, hardware and paper.
1.1 — Cold (software) wallets funds can be transferred into warm wallets (connected to the Internet) at the time of the transaction. Here is a vulnerable place when the scammers can find a hole in the code and use it to steal funds from the wallet. To protect fans of local wallets from scam it is highly recommended to install a reliable anti-virus on the PC. Free and trial versions of antiviruses rarely give good protection, so it’s better to spend some money to buy a licensed program and save money in your wallet. Among the constantly growing number of cold wallets firms, there are 2 most popular and often used — Electrum and Exodus. Electrum has a wide functionality, Exodus — user-friendly interface. The choice of altcoins in both of them is still small, but they gradually increase their number.
1.2 — Hardware wallets — these are the most reliable way to store coins today. It can be compared with a safe, in which under several locks (private keys and pin-codes), your funds are stored. Your coins are kept on a physical device without direct access to the Internet. For operations with crypto currency or fiat it is necessary to connect it to a PC or phone and enter a private key. And the device itself is also protected by a personal code, which gives a security guarantee when it’s stolen or lost. Such a wallet can be connected even to an unprotected or hacked computer, and the scammers can not steal the funds!
The most popular models of hardware wallets are Trezor, Keepkey and Ledger Nano S. All of them have a general principle of generating private keys in offline mode, equipped with a display for better usability and are of small size (Ledger Nano S — almost a USB flash drive). This kind of wallet is good in everything, its security is the highest among all other types of electronic coins storage, and the only drawback is the price of the devices — about $ 90 for each of these models.
1.3 — Paper Wallets — grandmother’s way, which still works! The private key is simply printed or written on paper, is hidden somewhere offline and waits there for a hour X away from the Internet. No matter how surprisingly this may sound at the age of high technology, many experienced programmers prefer to store their keys this way.
2 — Wallet Diversification This method is relevant not only for the crypto currency, but for all types of investments in general. It is not necessary to keep all virtual or fiat money in one place, it is better to distribute them among several deposits and wallets, shifting that part of the funds that you do not yet plan to use soon to a hardware wallet.
3 — Wallet Backup If you make this simple and quick action in advance, then in case of loss / theft of your PC or mobile phone, you can pull out a backup of your wallet with all of your funds. When creating wallets, all private keys are stored only by their owners, therefore no one of support people can help you to return access to your coins if you do not have a backup of your wallet. To create such a backup, simply copy your program file to an external storage device and put it in a safe place.
4 — Protection of Communication Channels By connecting to wi-fi in a public place (cafe or park), you can not be sure of providing a high level of security for your connection. Scammers easily recognize the information entered during the authorization, including logins, passwords and private keys. What happens next — you probably already guessed. The way out of this situation is to use checked and protected communication channels (reliable Internet connection) only.
5 — Buying UBC
We try to offer our contributors not just a project, but a whole marketplace infrastructure, which takes into account all the difficulties that users can face, including safety issues. Our team is working to ensure that the use of Ubcoin Market is easy and convenient for all participants, and security is at the highest level. The Ubcoin (UBC) wallet on the marketplace will be protected to the highest extent.
submitted by Ubcoin to u/Ubcoin [link] [comments]

Using Electrum and Bootable Ubuntu USB to Create a Secure Cold Storage Wallet

Here is a short guide that is hopefully newb friendly for creating a cold-storage wallet with Electrum. All you will need is at least one USB flash drive with at least 2 GB of free space, your PC, and pen & paper.
You will need The Universal USB Installer, as well as the Ubuntu .iso image file. Choose the 32 bit version to be safe. Download both, plug in your USB flash drive, and launch the installer. Select Ubuntu in Step 1 in the installer. Then in Step 2 browse and locate the Ubuntu .iso image file you downloaded. Then in Step 3 select the drive you have inserted, as well as click the box to format the drive and erase contents. Do NOT set a persistence as this will reduce the security. Then click create and wait for it to finish.
Once booted into Ubuntu, make sure to click "try ubuntu". You are only trying it out on the USB, and not installing it onto your main hard drive. The reason for using the bootable drive is everything exists in memory and mostly disappears when you shut down Ubuntu.
(It would be more ideal to install electrum in a complete cold environment, but I have heard that could cause some problems with Electrum at this time and it is best to install it while connected to the internet. But if you want true cold storage you must have zero internet connection at the time of creating the wallet. Since we are disconnecting before Electrum creates the seed, we should be good.)
At this point you are done, just shut down Ubuntu to make sure the evidence of the seed is erased. Then you can send Bitcoins to your cold storage wallet. You have effectively created a very secure cold storage wallet, in my opinion. To restore the cold wallet, just launch electrum and choose "restore wallet" option, type in your seed, and voila you have a hot wallet ready to spend again.
Extra: Using Truecrypt Encryption
Bonus tutorial is if you would prefer to save your seed on another USB or digital device. It is not recommended to do this, unless the seed in encrypted. Even then I would only leave it on a USB and not plug it into any hot device just to be safe. I would recommend Truecrypt although its possible the NSA has hacked Truecrypt, so use at your own risk.
sudo add-apt-repository ppa:stefansundin/truecrypt
sudo apt-get update
sudo apt-get install truecrypt
Hit enter after each command. If it asks permission, press y. Sometimes I had problems getting commands to work in the past. For some reason first installing flash from the software center fixes the problem, but I have no idea why.
Choose a size for the file, probably 5 MB is enough, but by all means choose more if you want to hold more files. Click next and make sure to choose a SECURE password for the file. If you don't pick a good enough password it will be brute forced easily. Use numbers, letters, capitals, lowercase, symbols, and make it long as possible. Try to have it something you can memorize if possible. Then click next. Then format it as FAT, and click next. Move your mouse around for entropy and then click Format, and your truecrypt container has been created.
I think this is a decent easy to follow tutorial. Hopefully this can help some newbies out, if I made any mistakes please feel free to correct me.
Edit: Sorry formatting sucks.
submitted by btcfreedom to Bitcoin [link] [comments]

an "open source" generic offline Linux QR/2key generator and secure cold storage wallet that is small portable quickly acquired and easy to use.

A Bitcoin Root for Linux/Android Phones
A simple Ledger Program and Offline Bitcoin Address/2Key Generator With a Friendly Integrated GUI Written in Linux and Installed on a Cold Bricked Android Phone.
Let me briefly introduce myself, . I am a 10 year Linux PC user (Fedora, Mint, ) which I installed myself through time on various old PCs , Laptops, and Netbooks either online or by usb. . I am trying to find someone who might be interested in writing a: Rooted, Data bricked, Linux Android Phone Program for me,
The program I am proposing and putting forth to the current Linux Open Source, community, for help on would be installed on a unwanted older android phones,
The exact program is “a Linux, “Open Source”, Offline Bitcoin Account Ledger & address QR code generator with a save to memory capability for backups These Backups can be done offline either through tetheusb to offline computer to usb thumbdrive, or to offline printer for paper backup, or without tether, to an already existing external SD card slot if available. And lastly it would have a friendly simple integrated ledger GUI.”
It's a vary small program root and total install, intended to be installed upon a rooted android device which is then immediately wiped clean of the pre existing software file system. The pure Linux open source program would then upon installation as a whole program be vacant and devoid of any files designed to recognize any data transfer capabilities of the physical phone hardware itself” After installation it becomes unaware of such things as bluetooth and wifi, hardware. Thus it cannot transfer data . . The phone is no longer a phone and it does not, nor ever will again' transmit data, for lack of a better term I am calling this cold bricking a phone, . The only means left of communication would be through the screen/camera of a single displayed QR code., This program is intended and permanent unless a re root and re installation is done. The Cold storage function has been "air gapped" The proposed program is so basic in its entire existence. It would easily not over exceed nor ever tax any current cell phone's memory resources or processing requirements. The more minimal and simplistic the entire program the better its meant to be a simple device. Free to the masses in need.
Some of the bottlenecks of the current growing Bitcoin system i can see existing in the world today are
!. It's current lack of a simple use for the common man. 2. It lacks of security for the first time user.
My reason for wanting to make this open source and free and easy is that it might help many people in emergency situations around the world today. Im hoping to make Bitcoin more immediately accessible to this population and the global community as well. This software upon root installation” should provide A safe and secure alternate currency offline cold wallet with quick reliable immediate access to all currently existing online crypto currency exchanges within the global network,. one can then use those existing exchanges to transfer with other entities such as ATM and personal one on one trade as well.and then one can safely secure ones funds and private keys offline. .
This cold bricking physically changes the devices hereafter purpose and function permanently. The old device is now a new device.”
An installed Bitcoin QR code offline generating software program should also have an easy to use user friendly GUI through a Account Books/Ledger GUI. . In the background it would run a Bitcoin Address/2Key offline creation program letting the user have the final 2key QR code image upon users command. It would use camera QR code transfer input and phone screen QR code transfer output The Account Book GUI will prompt the user for type of transfer and amount.
In the end you should have a secure offline cold wallet, portable, with internal offline QR code generating capabilities.
Why I personally want this program, . The Bitcoin phenomena itself has shown that a globally owned currency might be of good use in our world today. Especially in the areas of rescuing localized economic fiat collapse. For a large percentage of citizens living upon within these regional local communities (communities such as Venezuela and Greece 2017). It has in very recent modern times shown that BTC might be be a possible economic rescue tool. The gold and silver community have always believed that precious metals could be used in times of economic collapse, And a long history would dictate their reasoning to be a possible valid and working system. . But as of late there has been a new competitor in this arena of economic relief brought on by the advent of industrial computerization and the world wide web, . This digital global currency system currently BTC may in fact help all of humanity as a tool in stabilizing stressed individuals within collapsing economies. I believe both systems (precious metals and BTC) are valid opportunities and tools for economic rescue, And both can be tried. The Global Digital System is a new one yet to be looked into and fully tried.
In countries today such as those afore mentioned, We as of now currently can find a small percentage of the population experimenting with this global digital currency as refuge while their local fiat slowly collapses around them. This new global BTC currency system may be a large step forwards in protecting many local communities during economic duress in the near future. But it is not widely used amongst these troubled populations.
The problem I see in this new Global BTC System, is in its infancy and growing pains it still lacks ease of use, and availability, which then leads to mistakes in security of assets,
Today, as of this date, . in order to acquire and secure your digital currency in the event of an emergency, You must be tech wise concerning all the avenues of online and digital offline cold storage transfer. You must then purchase an airgapped cold wallet device and you must learn how to use and correctly manipulate this difficult technology, To do this You can download apps that are simply more middlemen in the system of exchange and some not cold secured. , Some apps are better than others, but most fail at differing points. If you do not use and learn how to tranfer amongst apps into total cold storage where you own your private key, Then you can learn make a linux bbotable usb, .and generate offline addresses. then From a laptop or PC, making paper copies on a printer or save offline on digital format, You must then also know the correct ways to transfer and connect this digital data without losing it. (sweeping/importing). For the common man this task is currently daunting and time consuming.
I believe this small open source program largely helps answer the “availability and ease” for most citizens in todays world whether in distressed economies or not, It would also stand to reason that the faster the individuals within an economicly distressed population can get onto a mass globally supported reserve currency, The sooner their people can begin to repair their local system. Once a local community fixes their economic problems the local people by nature while on BTC should then migrate back into the repaired local system. They should migrate naturally back once it becomes more desirable again at a local level, . as long as both systems (global and local) co exist and if the global currency is always freely open to the citizens across the world to invest in at will freely decentralized and anonymously, the global digital currency may have possible avenues of a stable reserve rescue for those in localized economic distress.
Yet, . . as I said it needs at this current time to be more quickly and readily available and easier for the people to use. This is whats lacking in the system as I see it, . . I dont think this new global digital currency is an answer to all and everything, . . . But I do believe it has its advantages. If you have a global wide increased acceptance and use of BTC on a grand geographically diversified scale
What I have done so far , . I have taken an old beloved and reliable android phone laying in my drawer, (a Samsung sch1200) and without rooting it, and by simply downloading two apps from the google play store , I have successfully made it a secure Bitcoin cold storage offline wallet that generates Bitcoin addresses and keys offline, it has a QR code scanner though the phone camera and a screen to display before said QR codes. The device I now have was inexpensive, widely available, and gets easier for me to use for BTC transactions every day, It also securely saves all my BTC offline where I am in charge of protecting those assets myself.
It is an offline bitcoin QR generator and cold storage device.
So if I have done this already why am I asking the Linux community for help.
The one I have right now is tedious as I have hodge podged it together with various apps and must manually create and move my QR data around between apps and ledgers. I Scan a QR code with “QR-Droid” save it manually, cut and paste both adresses and keys. Then save them on a word processor doc. All my addresses key pairs are then saved on individually named docs like unto a digital paper wallet and finally integrated into a single folder for cold storage backup,
As a side note for “random QR code adress and bitcoin key generation” I must, open a previously installed browser “Opera Mini” and the generate the random Bit address and QR key set from the previously saved offline page “bitaddress.org”, (I believe its a simple jave script HTML program, but im not sure),
I have successfully and easily then there after moved funds to my Coinbase and Mycelium accounts and back again, cross platform with no problems and great efficiency and ease, Its totally offline portable code generation and cold storage . IT works well for me, I am in control of my private keys, I also easily back up my data, and I do it often, . every time I generate a new key set I back it up to an external SD , . . and its extreamly portable.
A simple ledger checkbook offline QR cold storage system that creates and manages offline private keys in the background on a reliable no longer used dormant phone, since old phones might fail as in any technology, , (But mine is running strong), It has backup capabilities to either the existing usb tether or if so equipped and my favorite, . external SD card.
In closing I will say, . . .I have the utmost respect for the Linux open source community as a whole,. The only way I would ever pursue this endeavor would be through them, . any other way will not do.
And if by now it falls to nothingness like dreams never written , . . .At least I would urge you all to go to any nice high spot overlooking all people spread across your local community (city or town). Look out upon it, and then ask yourself, what would happen if these my friends below found out they had lost their local fiat currency suddenly all at once today.
And if you don't do that, . . Meh, . .I still have the utmost respect for you anyways, and its all good, . . yeah I just went Crazy today,
Anyways, Thank you for your time. .
P.S. and, . .A Friend I once met along the Bitcoin path recently saw what what I had so crudely made out of an old phone and made a video of it and put it online for me , , it can be found here
https://www.youtube.com/watch?v=0LTu59a5IJA&t=9s
And now I am tired of editing, . I quit, . .it is as it is, . . you'll just have to wade through it people, or get a couple of sentences in and toss it aside, . And .if you got this far, thank you for wading through it.
 Eclecticuniversalas 
02-21-2017
submitted by eclecticuniversalas to Bitcoin [link] [comments]

Bitcoin wallet on an external (passport) Hard Disk Drive

Back in 2013 I set up BitcoinQT, on my mac, that lead to problems on its small HDD (size). I tried then to transfer over to an external Hard Disk Drive and this began to have the same problems, my old Macbook couldn't handle the workload of downloading the whole Blockchain.
I have since then been using online wallets.
I'd now like to go back to using an external hard drive for cold storage (ideally) ..Is this possible?
What do I need to download? The wallets out there mention using USB sticks and I can't find anything in searches about Ext. HDD's.
Is it just better to use a USB memory stick, or the same?
The best cold storage wallets seem to suggest an offline laptop to set (Armoury for example on), or creating Raspberry Pi on a stick . They never relate to ext. HDD's
Thanks if you can help.
submitted by Leopdspots to BitcoinWallet [link] [comments]

[ FAQ ] Beginners guide - Your way to your wallet

Hello guys, I've noticed day by day that new shibes joining our community with next to none experience in how cryptocurrencies wallets works, and have seen many questions here and there.
And I've decided to collect the common questions [ FAQ ] and try my best to answer them in a beginner-friendly way that might be helpful to the new shibes out here =)
I do not intend to compete with the other getting started guides over the community, but having a one place with common beginners questions is nice.
If you couldn't find enough answers in this post, feel free to ask in the comments, I'm sure that me and other helpful shibes will be around to help!
Dogecoin Wallet Getting Started.
The wallet is used to store your coins and to make transactions, it's the one place that will store your addresses to send and receive coins.
The hard, official, safe way:
Go to HERE and select your operating system.
Yes, this is the Hard way as it might take forever to sync and get started with this wallet when you run it for the first time, there are easier ways to get a wallet, but I do not, and will never Recommend that you use any other methods than this. Be safe and get this one AND only this one to store your coins. Why? Because it's the official and safest client.
The easy way, suggested by flickerkuu .. The creator of http://www.dogedoor.net/
A light wallet can be found here: http://multidoge.org/
There is a file called " Wallet.dat " which your wallet reads to get all the data, basically; all your coins, addresses, and transactions are stored within this file. Imagine that this file was not " Protected enough " and someone has access to it? Yes, that's right, they will have access to everything in your wallet. By encrypting your wallet, you're adding a second layer of protection to your file, so even if someone has access to your " Wallet.dat ", they will still be unable to do anything with it without the password, so make sure that you DO NOT FORGET TO ENCRYPT YOUR WALLET!
Run your Dogecoin-Qt.exe you downloaded from the first step, click Settings, encrypt my wallet, include everything that is possible in the password, lowercase, caps, [email protected]#$, whatever you would like. Make it long enough and easy to remember! Forgetting your password means your coins will be gone, forever.
Open your wallet, click on Much Receive, this is the place where you can use or generate new addresses. Copy the address and add it to the Pool, or whatever method you use to get coins. You can create a new address if you wish to!
Yes it is, Why? Imagine that your hardware fails? Your data gets lost? Or for whatever reason your wallet data file disappeared? Backup your wallet and stay safe!
It's simple! Run your Dogecoin-Qt, click on File, Backup wallet, call it something like wallet.dat and SAVE IT IN A COLD STORAGE ( USB Drive, External HDD, whatever you prefer ). For your safety, having it saved in multiple destinations isn't a bad idea. Saving in on a cloud storage ( Dropbox, etc) is! NEVER HAVE IT STORED ONLINE!
I've been searching around for an answer, and I'm here to share the most convenient answer that I found, because it makes sense to me rather than the rest answers asking you to backup after EACH transaction. This answer is bitcoin wallet client related, but should apply for Dogecoin-Qt as well.
I personally backup as much as possible! It takes seconds and it never hurts!

Quote "

The Bitcoin-Qt/bitcoind client's keypool has by default 100 Bitcoin addresses. Each spend transaction that has change chews up one of those addresses. Additionally each click on New Address will consume an address from the keypool as well. So you should be able to get by without a new backup until after 100 spend transactions plus any requests for a New Address.
So if you do 10 spend transactions a month, and receive funds 5 times a month you would be fine with a backup every 4 months maybe.
A backup plan should consider that backups fail, so multiple backups don't hurt anything.
The size of the keypool can be configured so that frequent use can occur without having to make backups as frequently. For instance, weekly backups would be fine for a wallet that does 100 transactions a week but the keypool has size of 250.
When the wallet is encrypted, no keys are added to the pool until an action that requires the passphrase to be entered. Backup strategy should take this into account.
And finally, if you import a private key, that key will not exist in any previously made backups.
Source: http://bitcoin.stackexchange.com/questions/13277/how-frequently-should-one-update-wallet-backup

" End Quote

This sub can help you get started if you have any questions regarding your mining setup.
http://www.reddit.com/dogemining
More information can be found on the official website: http://dogecoin.com/get-started
If you liked this post, save it, and share it with others who have interest in getting started.
submitted by YousefMTW to dogecoin [link] [comments]

What is wrong with my current cold storage method?

Today we are going to discuss cold storage and some specific problems with cold storage. While this applies directly to the Secret Key portion of a key-pair; it also applies to the seed used to back up HD wallets and hardware wallets.
The best way to keep you seed/secret key safe is to have multiple copies in multiple locations perhaps with multiple formats and even better if the keys are split. However not everyone has access to multiple locations, or access to land long term, or more than one place to store their things. This is an examination of faults with individual methods; and not a comprehensive plan, obviously.
Not to say everything is all bad but there are many potential weakness out there, and some in the Bitcoin and crypto community like to know the edge cases of things.
I will also highlight some of the aspects of the Keyois Capsule which is a 'physical bitcoin'.
A physical Bitcoin is a cryptographic key pair, a physical key printed and affixed to what has always been before a coin. The first physical bitcoin coin was the Casascius coin, since then the world of physical bitcoin coins has blossomed as a fun part of the Bitcoin world.
We will focus on mediums relating to cold storage and not ones designed for more everyday use, but this applies to the seed you save to keep your everyday spending wallets safe and backed up.
We will assume you generated your keys securely and that you already have them on some medium. We will also have to ignore endpoint physical security because they can all be carried away the same. Remember your cell phone /hardware wallet/ computer client are only as good as where you put the backup seed phrase, which can be thought of as data much like the SK discussed below.
Written on a piece of paper
Printed on a piece of paper
On laminated paper
Engraved / etched/ ablated/ stamped on a piece of metal
Stored digitally on a computer
Stored digitally on CD, floppy disk, laserdisc, or mini-disc
Stored digitally on a flash drive
Backups are essential for digital data Computer code for performing operations can be corrupted in transfer or in operation. Special systems exist and procedures help data to last longer. For ideas, see this archive.gov page Remember to store in multiple locations. You can lose everything in single structure
A physical bitcoin coin
**What can solve most of these problems? A combination of good backup procedures and encryption. **
If you have permeant access to more than one location (people who live in big cities, without family or cars have a hard time with this) or have people you trust with your money (don't) then look into using some form of Multi-signature option.
The Keyois Capsule is a crypto piggy bank; it can be funded from the outside but you to break it open to get them out. You give me a BIP38 encrypted key pair (well the address not the public key) and I engrave it in this tamper evident and time resistant package. You still have to hold on to the pass phrase that allows you to decrypt it; that is however the same problem as all methods with BIP38 encryption. How to store this without having to trust anyone but still being assured of it's security?
  • Engraving, embossing, or stamping on a sheet of metal is one option; however the metals that are easiest to stamp are ones that melt in a house fire. They could be put in a glass jar that's filled with aerogel and buried. These is the best readily available option for most people but it really can be tedious. - This puts you back at anyone who can see it can steal it so dip in plastic dip, wrap in duct tape, bake in clay, encase in concrete, whatever just don't leave unencrypted keys visible!
  • The cryptosteel is another ready-made option
  • Have the words etched onto glass at home with off the shelf products; but be carful of this idea because the glass can shatter from impact and heat or even sudden temperature changes
  • Anodize the words yourself on a pieces of metal, there used to be a service to help use your home printer to print the words with some chemicals you can buy
  • Bake them in clay, then encase that in epoxy resin so it can't shatter. then paint the outside, in the future you can solvent the paint off and see the written seed
  • Use a combination of techniques to split the seed so that it is safe(because split and separated) and redundant (because backed up).
The most cost effective way for a 'normal' person (without their own land, without more than one location, and who cannot trust anyone else with their funds) to keep their backup seed/ secret key safe from damage from the elements would probably to buy a stamping kit and hammer and some stainless steel sheet or bar, Aluminium can be okay if you have the right alloy but better safe than sorry.
submitted by ProfBitcoin to Keyois [link] [comments]

Does Bitcoin need an iPod?

I am currently messing around with cold storage and wanting to first verify the process with a couple of test runs using small amounts of bitcoin. I am downloading the blockchain (again, sigh) on a crap laptop that I don't use anymore. Not sure I really need to do this but I feel like it lessons the chances of creating a duplicate address, which I know is something akin to winning the lottery seven times in a row. Anyway, I then take my junk laptop offline, generate an address, encrypt and then back it up a few more times on some new USB drives.
As I am sitting here trying to wrap my head around how complicated this is, I have to wonder what percentage of people, true BitCoin adopters, are actually doing this? As a believer and technophile, I understand what is happening, but what a leap of technological faith it is. Sending large amounts into the ether and hoping it lands and waits, forever in the correct spot. Will it be there when I need it? What is going to make BitCoin easier to use and still give you the same amount of true cold storage protection? Is it a software platform that I haven't seen yet? Is it Armory paper wallet which crashes constantly on my Mac?
The whole process reminded me of how I felt, back in the day, before iTunes and the iPod came out. I had iMesh or Napster or what have you, then I had boat loads of MP3 sitting on my external HD. I had a Kenwood Z919, the first car stereo to play MP3 on a CD-R. Then I really got mobile with the Diamond RIO, but it only held about 25 songs so it was a constant tug of war of reconnecting and then wiping and editing. Clunky was the norm and definitely the expectation. Now I am not going to glorify the virtues of running iTunes on, and connecting my iPod to, my PC as the perfect solution for BitCoin; however, the advent of that combination brought the masses a transformative technology and I think that is where we are at right now. Are there companies working on a true cold storage stand alone small widget box, iPod like device, one we could leave in a safe deposit box without power? One that creates wallets offline and generates un-hackable keys. I saw something from BFL, but they will never see another penny from me, so I literally will not even read the specs.
People like to hold onto something physical, or at the very least a physical space they can visualize containing their property. It probably stems from some evolutionary trait that is hard to supersede. I remember opening my first savings account with my father, I was in fourth or fifth grade. There was a massive shiny vault door towering over the tellers at my bank, so I knew my paper route money was safe inside there. I had the small booklet with my balances stamped on it, which I kept in my sock drawer between uses. Our savings is something different, it is piece of mind. With the constant feed of "bitcoins stolen" being aired 24/7 on the news (since fiat or gold are never stolen anymore) I feel like the time is ripe for an iPod/iTunes like device to appear on the scene, something that can dumb down cold storage and make it truly palatable for the regular Joe Six-pack.
TL:DR Does BitCoin need an iTunes/iPod solution to bring it to the masses? We need what happened to mp3 circa 2001-2002 to happen to BitCoin in regards to cold storage.
edit: Someone mentioned Trezor, looks legit. Has anyone used it?
submitted by ShawnLeary to Bitcoin [link] [comments]

WARNING: LTC will be the target of more thieves/hackers!!

As the price for LTC goes up, more and more individuals, exchanges and online wallets will be targeted by hackers. Just look at what has happened with bitcoin lately! Please don't store your coins in online wallets/exchanges. Don't keep them on a android or iphone wallet. Most likely they will be easy to hack into. Make sure if you do store your coins, that they are stored in a wallet on your computer with password encryption(I personally don't even trust that). Be careful of Key-loggers, Trojans, and malware. You could still lose your coins if your computer is hacked!! The best way to keep them safe(as far as I know) is to put them in cold storage/paper wallet. You can also store your private keys on USB/External hard drives but I prefer the paper wallet method.
PLEASE PLEASE keep your coins safe!!!! Here is a list of thefts and scams related to bitcoin: https://bitcointalk.org/index.php?topic=83794.0
https://www.bitaddress.org (Make sure you use the bitaddress website while disconnect from the internet. Clear cookies afterwords.)
Put the paper wallet in a safe place(and in a zip-lock bag) in case water happens to find it. The same goes with USB and external hard drives.
If anyone has any other sound advice, please share it!
submitted by silverlitecoin to litecoin [link] [comments]

Bitcoin using Linux boot USB and secondary for a cold storage wallet Bitcoin Cold Storage Wallet HOW TO Store Bitcoin On USB Stick Guide 240p How To Make A Bitcoin Wallet Offline - Cold Storage Safe ... Bitcoin: How to Cold Storage [Paper Wallet]

Erwägen Sie den Einsatz verschiedener Medien wie USB-Sticks, Papier und CDs. Fertigen Sie regelmäßig Sicherheitskopien an. Sie sollten regelmäßig Sicherheitskopien Ihrer Wallet anlegen, um sicherzustellen, dass alle kürzlich erstellten Bitcoin-Change-Adressen und alle Bitcoin-Adressen darin enthalten sind. Bald werden aber alle Anwendungen Wallets nutzen, die nur einmal gesichert werden ... Cold storage in the context of Bitcoin refers to storing Bitcoins offline and spending without the private keys controlling them ever being online. This resists theft by hackers and malware, and is often a necessary security precaution especially dealing with large amounts of Bitcoin. For example, a Bitcoin exchange which offers an instant withdrawal feature, and might be a steward over ... Cold Wallet oder Cold Storage Wallet ist das Hardwaregerät, um Bitcoin oder eine andere Kryptowährung offline zu speichern. Dies ist die sicherste Art, Kryptowährung zu speichern. Es gibt populäre kalte Geldbörsen - Trezor, Ledger Nano S. Dies ist oft eine notwendige Sicherheitsvorkehrung, besonders bei großen Mengen an Bitcoin. Today we're going to detail how to create a secure bitcoin wallet with an inexpensive USB drive. There are a few different wallets you can download for this No external server is used for data because Armory maintains a full copy of the Bitcoin blockchain. No information is leaked which also makes Armory one of the most private Bitcoin wallets. There are two helpful guides that will show you how to create cold storage with Armory: one from Armory’s official website, and one at falkvinge.net.

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Bitcoin using Linux boot USB and secondary for a cold storage wallet

If you store your Bitcoin at an online wallet like Coinbase or a trading exchange, THEY ARE NOT SAFE! Plain and simple! You need to create an OFFLINE wallet ... Bitcoin Cold Storage With Old Cell Phones - Duration: 14:12. Sean Logan 6,901 views. 14:12 . How the blockchain is changing money and business Don Tapscott - Duration: 18:50. TED Recommended for ... Bitcoin Cold Storage With Old Cell Phones - Duration: 14:12. Sean Logan Recommended for you. 14:12 [HOW TO]- Store Bitcoin On USB Stick - Guide - Duration: 14:01. ... How to Create a Bitcoin Cold Storage Wallet Using Electrum - Duration: 35:15. Rex Kneisley 7,158 views. 35:15 . The most important skill for improving your life - Duration: 15:24. Better Ideas ... In part 2 we set up a Bitcoin cold storage system using an inexpensive netbook, Lubuntu (a Linux distro for low-end hardware) and popular Bitcoin wallet software Electrum.

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