Bitcoin Wallet Restore In Minutes | Darknet | Dark Web Link

Electrum - Simply the best thin Bitcoin client

The best, cutting edge thin Bitcoin wallet.
[link]

Spice

"Spice is a social mechanism that allows you to say to another human being, “Hey… I like your stuff, your content fulfills me in some way.” - Spicetoshi
[link]

BiblePay (BBP)

BiblePay (BBP) is a Charity Christian Cryptocurrency that donates 10% of coins to Charity every month, sponsoring hundreds of orphans
[link]

Here's my suggested new Trezor setup checklist.

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

Wallet Recovery Help

Hello!
I’m seeking help from the /bitcoin community to recover lost funds from a wallet.dat file. Someone I know asked me to help recover their lost funds - but I’m stumped and now seeking help from the experts.
Facts
Problems
Questions
I was under the impression that the wallet.dat file contained a private key which corresponds to any / all newly created receiving addresses, but I must be mistaken.
Any advice would be greatly appreciated. The person is at a dead end and I'm fresh out of ideas.
Thank you
submitted by DominusVobiscum_ to Bitcoin [link] [comments]

BitBox02 & KeepKey honest reviews

BitBox02 & KeepKey honest reviews

Hey, Bitcoin community 👋

I've just joined after a small research over the web, and decided to share some of my thoughts about these hardware wallets as individual experience.
KeepKey
The first hardware wallet I've received was the KeepKey, which acquired by the ShapeShift platform. It has some great advantages I liked at first sight:
  1. Using ShapeShift platform web to communicate between the wallet and the outside world. On the platform you could watch your assets with nice graphs, send & receive Bitcoin (and other ERC20 tokens) and trade between assets without commission (as long as you have FOX tokens - more on the ShapeShift subreddit).
  2. The most cheap hardware wallet, can be purchased for only 10$ here
  3. Great customer support! any question I sent them was answered quickly
The KeepKey via the web platform needs to be verified by a PIN (4 to 9 digits) of your choose. I didn't like it has there is no zero ("0") digit, only one to nine.
KeepKey verifies PIN screen
The PIN pattern on the KeepKey large screen (which is great advantage!) changes every time you unlock it, and numbers are not shown over the web (only dots). All actions on the web must be approved by one single button on the device it self and all the details shown very nicely!
Receiving Bitcoin on KeepKey - address and QR shown (and can be scanned)
KeepKey implemented a great privacy feature that each successful transaction changes the wallet's address. On the other, once you got the transaction done you can't see this address anywhere again.
Some of the disadvantages that made me move to the BitBox02, are:
  1. The lack of USB-C adoption. It was a bit frustrating looking for an adapter every time I wanted to connect it to my MacBook, which has USB-C ports only.
  2. Mobility isn't available, as you must use the ShapeShift platform (no native desktop program nor mobile application is available)
  3. Chrome is the only supported browser and the platform can't be used by any other.
  4. Not sure about the build quality. When I first opened the box, the upper half of the device wasn't parallel to the bottom, made me a bit nervous
  5. Not supported bech32!
  6. Lead to KYC
MicroUSB connector and edgy built
Overall, I find the KeepKey a great wallet, decently for this low price and the platform as some nice features. KeepKey has a Chrome extension which will be removed by June of this year, as the Google removes Chrome App Store.
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BitBox02 Multi edition
So, after the downsides of the KeepKey I was waiting for my wallet of choice, the BitBox02 which was built by the Shift Cryptosecurity, it is much smaller device but I find it more useful and much easier to use everyday.
The BitBox02 has two types, one for Bitcoin only and one for Bitcoin and some others. Currently not many coins supported, which isn't a great (Bitcoin, Ethereum, Litecoin and some other ERC20).
Shift Cryptosecurity has some other type of threat model, it has no seal tape on the box to verify it's a legit unboxed wallet, as many manufacturers (including KeepKey) does; they actually vacuuming the box and make it almost impossible to cut it without notice. As for now, they working on new awesome feature called "Tep", a really innovative idea! watch the video, it's really great!
Inside the box there was a USB-C to USB-A adapter (awesome thing to provide!), extended USB-C cable, stickers, microSD card (soon to be explained why, but again, awesome they send it included) and the device it self.
Some of the advantages are:
  1. Native desktop program for MacOS, Windows and Linux
  2. Android application (hope for iOS soon as well), which is great for mobility
  3. Easy to use and guided through every step of the initialisation
  4. MicroSD card used to backup (not encrypted) the keys, another method for users, along with the 24 mnemonic passphrase. It's nice feature to have for those who aren't that technologically.
  5. Secure chip built-in the device
  6. Able to use with Electrum
BitBox02 has no buttons, it has a unique gesture touch sensors on it's sides and it used a slide, tap and hold gestures.
Supported low and capital letters along with all 0-9 digits
The device will wipe it self after 10 times of wrong password. Backup of the keys can be done by the microSD card or by the 24 words.
BitBoxApp, receiving address must be verified on the device
Verify on the device by single tap
Same as the KeepKey, the BitBox02 generates a new address each time you made a successful transaction, keeping the privacy in mind and focused. another nice feature to have is that the BitBox02 has U2F ability, which means websites like Google, Facebook, Twitter and else can be 2FA with a physical security key, a great way to secure accounts.
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In my opinion, KeepKey is a great wallet but I liked the BitBox02 more, specially because of the mobility and the ease of use on any OS no need to download Chrome, although it's bit more expensive.
submitted by Sh0ham to Bitcoin [link] [comments]

Bitcoin Security Tips

Use a Reliable Exchange Service
Web wallets are risky as hackers use them to gain unauthorized access to people's money. If you really have to use one, make sure you use a reliable exchange service. Once the exchange transaction happens, make sure you transfer the coins to your own wallet right away.
Don't allow open access to your Wallet
According to Joe Steward, you should not allow open access to your Bitcoin wallets. If an employee accesses your wallet and makes a transfer to a wallet they have access to, your money will be gone. To deal with this problem, you can use sub-wallets.
Use Separate Wallets
Often, Bitcoin wallets that are connected to the web all the time are prone to network-oriented attacks. So, it's a good idea to use offline wallets instead. Actually, what you need to do is keep your digital money in the offline wallets. As soon as you get a big amount of money in your online wallet, make sure you transfer it to your offline wallet as soon as possible.
Store Your Keys Offline
It's a good idea to store your private keys on an offline computer, which will help you keep hackers and malware at arm's length. After all, you want to keep the system as secure as possible.
Use a Dedicated Hardware
It's better if you use a dedicated USB key to transfer data between two computers. Again, it will protect your data from potential viruses and hackers.
Use Linux for added Security
If you are looking for the best way to move data between two computers, you may want to use a USB drive. For this purpose, the most secure system is Linux as it is very good at fighting USB-based threats.
Create Backups
You will lose your Bitcoin or wallet if you end up damaging your computer. So, it's a good idea to create a backup of your wallet someone else. Ideally, you may want to make several backups and store them in different locations.
submitted by Boomah422 to bitcoinmixerc [link] [comments]

Updating the progressive blockchain wallet TKEYSPACE 1.1.0 on Android

Updating the progressive blockchain wallet TKEYSPACE 1.1.0 on Android

https://i.redd.it/g2g1tcvqotx41.gif
Today, the team of Tkeycoin Developers-has prepared a little good news for Android users 💌
This is the next update to TKEYSPACE 1.1.0 on Android. And now, — this will be the rule: updates, good news and movement on a planned plan, entering the market and much more.
https://preview.redd.it/6ox2ivybotx41.png?width=600&format=png&auto=webp&s=43d36091bd3ae1e0aa36d156a9c7ac8e27d507be

About release TKEYSCAPE 1.1.0

https://preview.redd.it/6yfvnlgdotx41.png?width=1400&format=png&auto=webp&s=007cdfbcac424dd610f9c962fc3732ced02f9e51

New cryptocurrencies and tokens

We are constantly expanding the range of supported tokens and cryptocurrencies — new ERC20 tokens have been added: Bancor (BNT), Cashaaa (CAS), Chainlink (LINK), Decentraland (MANA), Maker (MKR).

Now the multi-currency wallet supports 25 cryptocurrencies and tokens:

Cryptocurrencies: Tkeycoin, Bitcoin, Ethereum, Bitcoin Cash, DashERC20 tokens and 1:1 stablecoins to the USD exchange rate: *Binance ERC20 (BNB), Bancor (BNT), Cashaaa (CAS), Chainlink (LINK), Decentraland (MANA), Maker (MKR), 0x Protocol, TrueUSD, Tether USD, USD Coin, Gemini Dollar, Statis EURO, Paxos Standart.*Stablecoins 1:1 to the gold exchange rate: *Digix Gold Token, PAX Gold.Binance DEX tokens (BEP2): Binance Dex, Binance USD, Bitcoin BEP2, Ripple BEP2.*EOS: available only for recovery if you want to transfer funds using a backup phrase from another wallet. Full EOS support will be available in future releases.

Support for new devices

Optimized compatibility with Android devices, now TKEYSPACE is supported on 4600 devices.
Many Android smartphone manufacturers often change the source code, regardless of whether it is Samsung or Xiaomi, so Android app developers are always forced to take into account various nuances on the released devices.

Updating the API

A stable API for the Bitcoin Cash (BCH) cryptocurrency is enabled: https://cashexplorer.bitcoin.com/api.

Optimized Push notifications

Fixed bugs with push notifications, now the notification about the price changes come on time.

Updating the USER-AGENT

Changed the USER-AGENT blockchain wallet: from cryptogramm: 8.8.8.8 to TKEYSPACE-ANDROID.
A User-agent is a client application that uses a specific network Protocol. For example, local wallets for Linux are marked as CryptoGramm: 1.1.6.2. Now in the list of nodes (peers), you can see the connected clients of TKEYSPACE-ANDROID, which allows you to understand which peers are connected to Your full node.

Overall improvement

Fixed minor bugs that were noticed by users; We analyze all received error reports and make corrections in the next releases of TKEYSPACE. You can always send us suggestions for improving the app, as well as offer us new features That you would like to see in the next releases: [[email protected]](mailto:[email protected]).
If you haven’t updated your TKEYSPACE multi-currency wallet yet, do it now — https://play.google.com/store/apps/details?id=io.space.tkey.
submitted by tkeycoin to Tkeycoin_Official [link] [comments]

Groestlcoin 6th Anniversary Release

Introduction

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

UPDATED - Groestlcoin Core 2.18.2

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

How to Upgrade?

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

Other Linux

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

Download

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

Source

ALL NEW - Groestlcoin Moonshine iOS/Android Wallet

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

Features

Download

iOS
Android

Source

ALL NEW! – HODL GRS Android Wallet

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

Features

Download

Main Release (Main Net)
Testnet Release

Source

ALL NEW! – GroestlcoinSeed Savior

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

Features

Live Version (Not Recommended)

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

Download

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

Source

ALL NEW! – Vanity Search Vanity Address Generator

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

Features

Usage

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

Download

Source

ALL NEW! – Groestlcoin EasyVanity 2020

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

Features

Download

Source

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

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

Features

Remastered Improvements

Download

Source

ALL NEW! – BIP39 Key Tool

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

Features

Download

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

Source

ALL NEW! – Electrum Personal Server

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

Features

Download

Windows
Linux / OSX (Instructions)

Source

UPDATED – Android Wallet 7.38.1 - Main Net + Test Net

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

Changes

Download

Main Net
Main Net (FDroid)
Test Net

Source

UPDATED – Groestlcoin Sentinel 3.5.06 (Android)

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

Changes

Download

Source

UPDATED – P2Pool Test Net

Changes

Download

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

Source

submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

[PSA] If your Bitcoin are not ready-to-transact in a wallet whose keys you exclusively control, then you don't control your Bitcoin

Are your coins on an exchange? Then you don't control your Bitcoin, the exchange has your Bitcoin, and you have a number on a screen.
Are your coins on a hosted wallet? Then you don't control your Bitcoin, the host controls your Bitcoin.
Are your coins actually just credit loaded on a purchasing card? Then you don't control those coins.
Are your coins in a tipbot? You don't control those coins.
Are your coins locked in a timelocked contract? While they're technically still in your possession, you've relinquished control - you don't control your Bitcoin if you can't actually move them onchain when you need them.
If you've been at this for years, then you know that right now is the moment in the hype cycle when the other shoe drops. If you've followed events, you know that there's a good possibility that one or more exchanges or other services are operating fraudulently.
Be prudent. Don't get Goxxed.
Unfortunately a lot of BTC holders who arrived in this last cycle are still too new to fully understand what I'm telling them.
If you're reading this and you're not sure you understand what I'm telling you, NOW IS THE TIME TO ASK DUMB QUESTIONS.
I declare the remainder of this thread the "help people get their coins under control" thread. At least for this one thread can we make sure not to shame users or be political but just to be super constructive and help people understand what to do to protect themselves?
submitted by jessquit to btc [link] [comments]

AsicVault - Frequently Asked Questions

When was AsicVault established and how is it funded?
AsicVault was established 2016. It is funded by founders and corporate investors. Please see Crunchbase.

How can it be 1,000 times harder to crack compared to other BIP-39 hardware wallets?
BIP-39 hardware wallets are working on very low performance microcontrollers or secure elements. They are doing only 2,048 iterations of PBKDF2 SHA-512 that is even less than old NIST recommendation of 10,000 rounds from year 2016.
Performing higher number of PBKDF2 SHA-512 is standard practice for good security. iTunes does it, LastPass does it and Veracrypt as well. Even Ledger agrees that this very low number is the main problem of BIP-39.
AsicVault specially designed SHA-512 accelerator inside high performance secure chip is at least 340 times faster than common microcontrollers. The number of PBKDF2 SHA-512 rounds is set to be exactly 1,000 times higher than BIP-39, hence the cost to crack AsicVault is also 1,000 times bigger.
Please read in-depth teardown review and validation of AsicVault SHA-512 performance here.
You can perform independent analysis according to this PDF and our device performance is shown on this video.

Does it support BIP-39 passphrase?
Yes, AsicVault supports all standard BIP-39 seed words and additional passphrase (so-called 25th word). You can restore your HD wallet account created by other hardware wallets (Ledger, Trezor, Keepkey) without any additional steps. AsicVault always opens standard security BIP-39 account and high security BIP-39 accounts at the same time.

Why two processors?
Common design practice, also followed by Ledger, is to separate secure and non-secure code. Our advantage is that these two RISC-V processors are inside a single secure chip. This way the Security CPU has full access to the Application CPU RAM. This makes it possible to do proper secure boot.

Why RISC-V?
Open instruction set. Possibility to have open source CPU and extensions. We have already implemented several custom instructions.

Do I need a computer to initialize the device?
No. You can supply power from wall adapter or battery bank. AsicVault supports true air-gapped environment.
You can perform full device initialization, seed word generation and seed word backup without connection to the computer. You can also charge the device and check the status the same way.

Can I use USB extender cables?
Certified USB2.0 extender cables can be used. We don’t recommend extender cables while using USB3.1 features of the device. The device can detect (some) bad cables and show warning messages about them. It is not recommended to use cables/extenders longer than 2.5m. In any case, cables with lower AWG value are better, such as AWG20.

How hot does the device get?
During normal operation AsicVault device temperature reaches 35-37C. High speed USB3.0 operation adds additional 7C. AsicVault utilizes full Aluminum enclosure as an effective heatsink. Internal chips can tolerate up to +85C, so you never need to worry about them overheating. There are no Lithium batteries inside the device that are known for leaking and not tolerating high temperatures.

How long does the active anti-tamper system work?
Active anti-tamper protects your device at least 2 weeks, possibly up to 45 days, after you have fully charged the device. It takes just 15 minutes to charge the supercapacitors again. It is advisable to connect the device to a power source at least once per week. Different anti-tamper settings affect the anti-tamper aggressiveness, sensitivity and power consumption.
It is also good practice to enter your passphrase weekly so that you will not forget it.

How often can I charge it? Do the batteries age?
You can charge it as often as you like, several times per day. Supercapacitors can be charged 50,000 – 1,000,000 times during their lifetime compared to common Lithium batteries that only allow 500-1,000 times. Therefore even 10 times per day for 10 years should be fine. At least weekly charging is recommended for best anti-tamper protection.

How long are private keys safely stored inside device before the memory gets weak and they are lost?
Data retention time of Flash memory inside the main chip is 20 years. Additional encryption keys stored inside FRAM can last for 40 years at temperatures below 70C. These values are higher than the expected lifetime of the device. In any case you must make paper backup(s) of your seed words.

Can it store the whole Bitcoin blockchain inside the device?
No. The device is not designed to store large amounts of data. Internal 128-megabyte Flash is used to store applications. There are thousands of copies of the blockchain, storing yet another copy is not meaningful or necessary.

What is FIPS 140-2 highest Level 4?
FIPS 140-2 is Federal Information Processing Standard.
Level 4 requires that:
  1. physical security mechanisms provide a complete envelope of protection around the cryptographic module
  2. with the intent of detecting and responding to all unauthorized attempts at physical access
  3. Penetration of the cryptographic module enclosure from any direction has a very high probability of being detected, resulting in the immediate deletion of all plaintext CSPs
  4. Security Level 4 also protects a cryptographic module against a security compromise due to environmental conditions or fluctuations outside of the module's normal operating ranges for voltage and temperature
  5. A cryptographic module is required to include special environmental protection features designed to detect fluctuations and delete CSPs
We have used these guidelines while designing AsicVault. We meet and exceed the requirements in the following way:
  1. AsicVault has full Aluminium/Titanium enclosure that is not designed to be opened. Passive antitamper mesh protects the electronic circuits inside the device. Main secure chip also has chip level metal layer anti-tamper mesh.
  2. Active anti-tamper circuit monitors all intrusion attempts and performs immediate device zeroization upon detecting any such attempts.
  3. AsicVault has temperature, voltage and many other sensors that are continuously monitored by the anti-tamper circuit. Additionally, AsicVault has internal supercapacitor-based power reserve to run Elliptic Curve calculations and other cryptographic functions. Therefore, external voltage fluctuations can’t affect our device while performing these critical operations.
  4. Zeroization not only deletes the private keys, it also destroys internal hardware design making it impossible to perform any further analysis of the hardware.
AsicVault has not participated in formal Cryptographic Module Validation Program since we are not targeting US government users at this point.

Can AsicVault device run Linux?
It is not our priority to run Linux since it has too big overhead for hardware wallet. However, our RISC-V processors and Mark II hardware can run Linux for your custom projects.

Where can I purchase the device?
Please contact your local supplier about availability.
submitted by photonreality to AsicVaultOfficial [link] [comments]

Best Ethereum Wallets

Best Ethereum Wallets
When you start using cryptocurrency the number one problem is to find a secure wallet. In this article, we will introduce the most popular Ethereum wallets.

Hardware Wallets

We start with hardware wallets. These wallets provide offline storage for cryptocurrency. This kind of Ethereum wallet is considered to be the most secure.
https://preview.redd.it/86nocaff0mh31.jpg?width=720&format=pjpg&auto=webp&s=7a6d4e9a4ef9945eec416583d487e5553c4377e9

  • Trezor
Originally Trezor was developed for Bitcoin. Now it supports more different cryptocurrencies including Ethereum. This ETH wallet will work in tandem with your MyEtherWallet.Trezor is famous for the features that make it very secure. It provides 2-factor authentication, advanced cryptography and the opportunity to check transaction details before you confirm.
On the other hand, there are a couple of disadvantages. Such as the cost: the Trezor wallet is pretty expensive. If you are not a regular user you probably should consider cheaper wallets. Also, it takes time to access your holdings with this wallet.Thus using Trezor as Ethereum wallet may be a little inconvenient if you are a common user.

  • Ledger Nano S
Ledger Nano S is also a hardware wallet. It connects with any computers via USB. The most important feature of this wallet is security. As well as Trezor it provides 2-factor authentication. Aside from this, this Ethereum wallet has a PIN code to secure the device itself and also you can back up your account on the recovery sheet. Ledger Nano S gives users an opportunity to check details of transactions before the confirmation.
The main disadvantage of the Ledger Nano S wallet is the price. It is cheaper than Trezor, but it is still pricey.

  • KeepKey
KeepKey is a hierarchical deterministic (HD) wallet. It is also in the group of hardware wallets. KeepKey supports a lot of cryptocurrencies.The fact that this is an HD wallet allows users to generate private keys in an unlimited quantity. Undoubtedly this adds to the security level. Moreover, with the help of this device, you review and confirm every transaction. You can also set up a PIN code and a recovery sentence to make sure your holdings are secured enough.
It is easy to start using the KeepKey wallet. You need to download a couple of applications. One is to create a wallet. And with the help of the second one, you will be able to connect to KeepKey through Chrome.
Talking about the disadvantages we should mention the price. It is one of the most expensive wallets on the market to use it as ETH wallet.

Web Wallets

The great thing about web wallets is that you can easily access them. All you need is an internet connection.

  • MyEtherWallet
Unlike the most part of hardware wallets, MyEtherWallet is free. Nonetheless, it provides a high level of security by allowing users to store their keys on their own computers. There is no necessity to give any private information when creating a wallet.This Ethereum wallet interrogates with some hardware wallets such as Ledger Nano S and Trezor. Also, this platform gives an opportunity to write smart contracts.
In addition, MyEtherWallet provides automatic back up. So users should not remember about this by themselves.Moreover, it’s possible to get a paper Ethereum wallet by going to the “Wallet Info” section.
https://preview.redd.it/j7wzg5ki0mh31.png?width=1088&format=png&auto=webp&s=41383744e961877ba6acbf128be7fdcb2f4baf77

  • Coinbase
First of all, Coinbase is an exchange platform. Usually, it is not recommended to store cryptocurrency on the stock platforms. But Coinbase is often considered to be an exception. This platform has a wallet that is suitable for use as ETH wallet. It is easy to use and has an intuitive interface.
One of the major drawbacks of this wallet is that users don’t control their private keys.

  • MetaMask
MetaMask is not just a popular Ethereum wallet. It is a browser extension. It can be installed on a number of browsers such as Chrome, Firefox, and Opera. This form allows accessing your holdings easily.The good thing is that you don’t need to provide personal information for the registration. Also, there is an opportunity to store the private key on your computer.

Desktop Wallets

There are wallets that are made in the form of a software program. They can be installed on your device. Such wallets are called Desktop Wallets.The security level of these wallets is not as good as of hardware ones.

  • Exodus
Exodus is a multicurrency wallet. So it can become your ETH wallet.It is famous for its user-friendly interface. It is a good wallet for those who only start their journey into the cryptocurrency world. Exodus supports ERC20 tokens.Users store their private keys on their computers. This increases the security level. Exodus has a backup feature.
The drawbacks of Exodus are that there is no possibility to add any custom tokens and a small list of ERC20 tokens.

  • Atomic Wallet
Atomic Wallet has a very convenient interface which is suitable even for the beginners. It supports Ethereum and all the ERC20 tokens.The wallet supports atomic swaps. So you can not only have one wallet for Ethereum and all the ERC20 tokens but also exchange them with another user.
Unfortunately, it doesn’t have a hardware wallet yet. So the level of security may not be very high.

https://preview.redd.it/e13whvvl0mh31.png?width=1024&format=png&auto=webp&s=8ee93d65adfcee76b0f8043c6ae1e4c022c16c0b

  • Mist
Mist is the official Ethereum wallet. So it is a full node wallet. Full node wallet downloads the whole Ethereum blockchain on users’ computers. In other words, it downloads all the data about the ETH network. This type of wallet makes any user a full-fledged member of the blockchain.
Mist has developed the way to allow users to interact with their ETH storage easily. It is free. Users don’t provide private information during the process of registration. The only way to access your wallet is to use a password. Your private keys are stored on your computer.The Mist wallet supports smart contracts.

Mobile Wallets

Sometimes it is more convenient to use a mobile wallet, which can be installed on your mobile devices. This type of wallets provides quicker access to your storage wherever you are. Mobile wallets are easier to use than desktop ones, but it is riskier.

  • Jaxx Liberty
Jaxx is free. It supports a lot of cryptocurrencies including ETH. It can work on different platforms such as Linux, Windows, and OSX. There is also an extension for Chrome browser. The interface of Jaxx wallet is simple and good to use.
However, the security of this wallet raises some questions.

  • Coinomi
Coinomi is an Android app. It is easy to use and supports a wide range of cryptocurrencies. With this wallet, you don’t have to think about backup. Coinomi has a feature that helps you to keep all the information. It is secure enough. Your private keys are nowhere but on your device. Coinomi protects the user’s identity when they sign up.
Unfortunately, so far there is only an app for Android.

https://preview.redd.it/4iyn26do0mh31.png?width=1604&format=png&auto=webp&s=7a9d58bb81911aa336aa93320dbdae5f763d4a3e

Paper Wallets

Paper wallets allow printing private keys on paper. And this printed document is used as a wallet. These wallets are not that easy to access. Although the level of security is relatively high.

  • ethaddress
In case you are looking for a way to store your ETH in the most secure Ethereum wallet, but you are not ready to pay for a hardware one, try ethaddress. This wallet is free. It provides a high level of security.

  • WalletGenerator.net
The core of this key-generating wallet is 99% identical to the well-considered bitaddress.org.First of all, it’s necessary to download this website from Github, unpack and open the index.html file directly from your computer. The code version control allows to significantly simplify the mutual verification of the executable code. For more security, disconnect from the Internet at the time of creating your wallet.

How to keep your wallet in security?

Whatever wallet you choose you want it to be as secure as possible. Here are some ideas on how to achieve this:
  • Choose a wallet that suits your requirementsAll wallets are aimed at different goals and ways to use. Some of these wallets offer high security, some provide you with easy access for fast trading. Therefore, you should choose exactly what suits your needs best.
  • Keep your private key safeAlways make sure that your private key is secure and is stored in a safe place. Moreover, do not share your private keys. No, not with friends. Not even with your parents.
  • Set up 2-factor authenticationSome wallets offer this feature to increase the security of your coins. Do not ignore 2-factor authentication, set it up for extra confidence in protection against theft.
  • Backup, backup, and backupNothing protects you better from unforeseen accidents than a good old backup. This way you can keep access to your coins.
  • Store your funds offlineWith all the security levels offline wallets are still the most secure ones. Therefore, it is better to keep large amounts of ETH coins only on offline wallets.

https://preview.redd.it/fg2c449q1mh31.jpg?width=1216&format=pjpg&auto=webp&s=559936b2921ebac41e7cef64187b1920453cf229
To sum up, you should choose the best Ethereum wallet by yourself based on your needs. All wallets have both advantages and disadvantages. Simply decide which feature is more important to you.We wish you an easy choice of the best ETH wallet and the safe storage of coins.

Feel free to follow our updates and news on Twitter, Facebook, Telegram and BitcoinTalk.
Read what the customers say about SimpleSwap on Trustpilot.
Don’t hesitate to contact us with any questions you may have via [[email protected]](mailto:[email protected]).
submitted by SimpleSwapExchange to ethereum [link] [comments]

Documentation - Step by Step Guides - Need Help!

We need help with documentation
  1. We need accurate, up to date, step by step text guides
  2. We need screenshots
  3. and we need Videos!

Proof of Work (POW):
https://www.reddit.com/BiblePay/comments/6umlqq/how_to_mine_biblepay_on_windows/
https://www.reddit.com/BiblePay/comments/6ummuj/how_to_mine_biblepay_on_linux/
https://whitewalr.us/2019/biblepay-nomp-pool-mining.html
https://whitewalr.us/2019/solo-mine-biblepay.html
https://www.biblepay.org/mining/
NOTE: Core wallet can only solo mine (there are future plans to add a stratum connector)

DRAFT (Work in Progress)
https://wiki.biblepay.org/POBH_Setup
https://wiki.biblepay.org/POBH_Setup_Windows
https://wiki.biblepay.org/POBH_Setup_Linux

Proof of Distributed Computing (PODC):
https://wiki.biblepay.org/PODC
https://whitewalr.us/2019/boinc-wcg-join-change-team.html
Old: https://wiki.biblepay.org/Distributed_Computing_2
http://wiki.biblepay.org/Distributed_Computing_Start_Guide
http://wiki.biblepay.org/BOINC_Researcher_Setup
https://wiki.biblepay.org/Getting_Started_With_PODC
http://wiki.biblepay.org/Distributed_Computing

DRAFT (Work in Progress):
https://wiki.biblepay.org/PODC_Setup

Proof of Orphan (POOM):
https://wiki.biblepay.org/POOM
https://wiki.biblepay.org/Paying_For_a_POOM_Sponsored_Child
https://whitewalr.us/2019/biblepay-cameroonone-partnership.html
https://whitewalr.us/2019/cameroonone-poom-charity-donation.html

Healing Campaign:
https://wiki.biblepay.org/BiblePay_Healing_Campaign
https://whitewalr.us/2019/biblepay-gsc-healing.html

Dynamic Whale Staking (DWS):
https://forum.biblepay.org/index.php?topic=468.0

DRAFT (Work in Progress)
https://wiki.biblepay.org/DWS_Setup

How to Buy BiblePay coins (Bitcoin, Exchange, Wallet, Sync, Encrypt, Backup)
https://bitcointalk.org/index.php?topic=2388064.msg51062536#msg51062536

How to Create Proposals (How to Get Funding)
http://wiki.biblepay.org/Create_Sanctuary_2#SUBMIT_PROPOSAL

Masternode
http://wiki.biblepay.org/Create_Sanctuary_2

Anything missing?

You can get paid BBP coins from our monthly budget for working on this!
https://forum.biblepay.org/index.php?board=5.0

Reference:
https://bitcointalk.org/index.php?topic=2388064.msg53424005#msg53424005
submitted by togoshige to BiblePay [link] [comments]

Best Ethereum Wallets

Best Ethereum Wallets
When you start using cryptocurrency the number one problem is to find a secure wallet. In this article, we will introduce the most popular Ethereum wallets.

Hardware Wallets

We start with hardware wallets. These wallets provide offline storage for cryptocurrency. This kind of Ethereum wallet is considered to be the most secure.
https://preview.redd.it/ovlczorz6mh31.jpg?width=720&format=pjpg&auto=webp&s=eba30a80ba4fd2928272f3fa8dcef39da0177a8f

  • Trezor
Originally Trezor was developed for Bitcoin. Now it supports more different cryptocurrencies including Ethereum. This ETH wallet will work in tandem with your MyEtherWallet.Trezor is famous for the features that make it very secure. It provides 2-factor authentication, advanced cryptography and the opportunity to check transaction details before you confirm.
On the other hand, there are a couple of disadvantages. Such as the cost: the Trezor wallet is pretty expensive. If you are not a regular user you probably should consider cheaper wallets. Also, it takes time to access your holdings with this wallet.Thus using Trezor as Ethereum wallet may be a little inconvenient if you are a common user.

  • Ledger Nano S
Ledger Nano S is also a hardware wallet. It connects with any computers via USB. The most important feature of this wallet is security. As well as Trezor it provides 2-factor authentication. Aside from this, this Ethereum wallet has a PIN code to secure the device itself and also you can back up your account on the recovery sheet. Ledger Nano S gives users an opportunity to check details of transactions before the confirmation.
The main disadvantage of the Ledger Nano S wallet is the price. It is cheaper than Trezor, but it is still pricey.

  • KeepKey
KeepKey is a hierarchical deterministic (HD) wallet. It is also in the group of hardware wallets. KeepKey supports a lot of cryptocurrencies.The fact that this is an HD wallet allows users to generate private keys in an unlimited quantity. Undoubtedly this adds to the security level. Moreover, with the help of this device, you review and confirm every transaction. You can also set up a PIN code and a recovery sentence to make sure your holdings are secured enough.
It is easy to start using the KeepKey wallet. You need to download a couple of applications. One is to create a wallet. And with the help of the second one, you will be able to connect to KeepKey through Chrome.
Talking about the disadvantages we should mention the price. It is one of the most expensive wallets on the market to use it as ETH wallet.

Web Wallets

The great thing about web wallets is that you can easily access them. All you need is an internet connection.

  • MyEtherWallet
Unlike the most part of hardware wallets, MyEtherWallet is free. Nonetheless, it provides a high level of security by allowing users to store their keys on their own computers. There is no necessity to give any private information when creating a wallet.This Ethereum wallet interrogates with some hardware wallets such as Ledger Nano S and Trezor. Also, this platform gives an opportunity to write smart contracts.
In addition, MyEtherWallet provides automatic back up. So users should not remember about this by themselves.Moreover, it’s possible to get a paper Ethereum wallet by going to the “Wallet Info” section.
https://preview.redd.it/rtvnw6p37mh31.png?width=1088&format=png&auto=webp&s=46fdf6af91d12fccc41d5a0d3fe3ee32ffce61dd

  • Coinbase
First of all, Coinbase is an exchange platform. Usually, it is not recommended to store cryptocurrency on the stock platforms. But Coinbase is often considered to be an exception. This platform has a wallet that is suitable for use as ETH wallet. It is easy to use and has an intuitive interface.
One of the major drawbacks of this wallet is that users don’t control their private keys.

  • MetaMask
MetaMask is not just a popular Ethereum wallet. It is a browser extension. It can be installed on a number of browsers such as Chrome, Firefox, and Opera. This form allows accessing your holdings easily.The good thing is that you don’t need to provide personal information for the registration. Also, there is an opportunity to store the private key on your computer.

Desktop Wallets

There are wallets that are made in the form of a software program. They can be installed on your device. Such wallets are called Desktop Wallets.The security level of these wallets is not as good as of hardware ones.

  • Exodus
Exodus is a multicurrency wallet. So it can become your ETH wallet.It is famous for its user-friendly interface. It is a good wallet for those who only start their journey into the cryptocurrency world. Exodus supports ERC20 tokens.Users store their private keys on their computers. This increases the security level. Exodus has a backup feature.
The drawbacks of Exodus are that there is no possibility to add any custom tokens and a small list of ERC20 tokens.
  • Atomic Wallet
Atomic Wallet has a very convenient interface which is suitable even for the beginners. It supports Ethereum and all the ERC20 tokens.The wallet supports atomic swaps. So you can not only have one wallet for Ethereum and all the ERC20 tokens but also exchange them with another user.
Unfortunately, it doesn’t have a hardware wallet yet. So the level of security may not be very high.
https://preview.redd.it/a810i9277mh31.png?width=1024&format=png&auto=webp&s=6b57cce28966819ea9922675e0c64180996eb9da

  • Mist
Mist is the official Ethereum wallet. So it is a full node wallet. Full node wallet downloads the whole Ethereum blockchain on users’ computers. In other words, it downloads all the data about the ETH network. This type of wallet makes any user a full-fledged member of the blockchain
Mist has developed the way to allow users to interact with their ETH storage easily. It is free. Users don’t provide private information during the process of registration. The only way to access your wallet is to use a password. Your private keys are stored on your computer.The Mist wallet supports smart contracts.

Mobile Wallets

Sometimes it is more convenient to use a mobile wallet, which can be installed on your mobile devices. This type of wallets provides quicker access to your storage wherever you are. Mobile wallets are easier to use than desktop ones, but it is riskier.

  • Jaxx Liberty
Jaxx is free. It supports a lot of cryptocurrencies including ETH. It can work on different platforms such as Linux, Windows, and OSX. There is also an extension for Chrome browser. The interface of Jaxx wallet is simple and good to use.
However, the security of this wallet raises some questions.
  • Coinomi
Coinomi is an Android app. It is easy to use and supports a wide range of cryptocurrencies. With this wallet, you don’t have to think about backup. Coinomi has a feature that helps you to keep all the information. It is secure enough. Your private keys are nowhere but on your device. Coinomi protects the user’s identity when they sign up.
Unfortunately, so far there is only an app for Android.
https://preview.redd.it/75o14iff7mh31.png?width=1604&format=png&auto=webp&s=280cdfaf6ea98e90f626e7bd9e2c3edbf2fd6ba2

Paper Wallets

Paper wallets allow printing private keys on paper. And this printed document is used as a wallet. These wallets are not that easy to access. Although the level of security is relatively high.

  • ethaddress
In case you are looking for a way to store your ETH in the most secure Ethereum wallet, but you are not ready to pay for a hardware one, try ethaddress. This wallet is free. It provides a high level of security.

  • WalletGenerator.net
The core of this key-generating wallet is 99% identical to the well-considered bitaddress.org.First of all, it’s necessary to download this website from Github, unpack and open the index.html file directly from your computer. The code version control allows to significantly simplify the mutual verification of the executable code. For more security, disconnect from the Internet at the time of creating your wallet.

How to keep your wallet in security?

Whatever wallet you choose you want it to be as secure as possible. Here are some ideas on how to achieve this:
  • Choose a wallet that suits your requirementsAll wallets are aimed at different goals and ways to use. Some of these wallets offer high security, some provide you with easy access for fast trading. Therefore, you should choose exactly what suits your needs best.
  • Keep your private key safeAlways make sure that your private key is secure and is stored in a safe place. Moreover, do not share your private keys. No, not with friends. Not even with your parents.
  • Set up 2-factor authenticationSome wallets offer this feature to increase the security of your coins. Do not ignore 2-factor authentication, set it up for extra confidence in protection against theft.
  • Backup, backup, and backupNothing protects you better from unforeseen accidents than a good old backup. This way you can keep access to your coins.
  • Store your funds offlineWith all the security levels offline wallets are still the most secure ones. Therefore, it is better to keep large amounts of ETH coins only on offline wallets.
https://preview.redd.it/z05sf6ci7mh31.jpg?width=1216&format=pjpg&auto=webp&s=546eed6ba6fc867ff4999d77ef88c6baeaeea8f3
To sum up, you should choose the best Ethereum wallet by yourself based on your needs. All wallets have both advantages and disadvantages. Simply decide which feature is more important to you.We wish you an easy choice of the best ETH wallet and the safe storage of coins.

Feel free to follow our updates and news on Twitter, Facebook, Telegram and BitcoinTalk.Read what the customers say about SimpleSwap on Trustpilot.Don’t hesitate to contact us with any questions you may have via [[email protected]](mailto:[email protected]).
submitted by SimpleSwapExchange to ethtrader [link] [comments]

BACKUP RIGHT NOW. My story.

I'm going to cut this long story short.
Dropped my phone in engine oil.
Screen not working.
Lots of bitcoins on phone.
Mycelium.
NO BACKUP.
gg.
There are lots of things I did wrong, my phone wasn't rooted, so I couldn't use lots of crafty methods, but most of all I did NOT HAVE A BACKUP. Somehow miraculously this morning my phone works again, I have no idea how.
The reality is, if my phone didn't miraculously work today, I would have lost A LOT of bitcoins. So everyone in this thread, if you haven't BACKUP NOW.
Every day, I would think to myself, I should backup my wallet today, nah I'll do it tomorrow.
BACKUP NOW.
edit: I have transferred my bitcoins off my phone, it was dumb having that many on a device I regularly drop anyway and yes I have backup-ed my new wallet
submitted by TheSilentSea to Bitcoin [link] [comments]

The bitcoin.com wallet is a fucking nightmare

I can't send any bitcoin cash anymore, all I get is "payment accepted, but not yet broadcasted". When I click to broadcast payment I get "Error. Could not broadcast payment. Error querying the blockchain." The only thing I can do is "delete payment proposal" but when I do that my bitcoins stay locked? What the fuck? It used to work perfectly fine but now nothing works.
I can't even import the wallet on a different system, using the same recovery seed that I know is correct because I have used it multiple times in the past. Do I need to change the "derivation path"? Do I need to change the wallet service url"? This is all extremely worrying
submitted by -thisisnotmyusername to Bitcoincash [link] [comments]

Feedback on new Nano "cold" storage feature in Q Vault

Hey guys, hope you are well. I'm looking to get some feedback on an idea I just had. A team and I are currently building an open source password manager for Mac, Windows and Linux. (https://qvault.io)
The goal of the manager is to have all the security features and configurations such that cryptocurrency keys can be safely stored inside. For example, offline use, cloud backup integrations, virtual keyboard, etc.
Anyhow, I just finished importing a nano wallet backup into my personal Q Vault. (simply a valid address and the associated seed), and I was thinking I should be able to generate that address and seed from within the vault, in the form of a button that is "generate simple wallet". Not only would it be more convenient, but it would be way more secure (no need to copy/paste the keys into the vault). This would obviously be only for HODLers, because the vault has no capabilities to spend the coins. Once a user wants to move the funds, that seeds would need to be imported into a "hot" wallet like natrium.
Anyhow, I'm thinking of doing this for Bitcoin and Nano first, and maybe adding more coins down the road if the feature is used. What are your guys thoughts?
Go ahead and download the app and play with it if you want to get a feel for how it would work.
submitted by kvothe1956 to nanocurrency [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]

How Many of Us Take Non-Super Human Wallet Security Measures and Nothing Bad Has Happened to Our Bitcoins (Yet)?

We hear so much about what i'll call super human wallet security measures, i want to get a sense of proportion by testing the waters on the other side of things -- people who are either tech noobs or have just made a principled decision that the trade offs and the security to be gained aren't worth the effort.
I'm personally more in the super human effort camp, but want to pose the question.
Also, let's assume we're talking about safeguarding a significant amount of BTC, whatever that means to you.
submitted by bitcoinlover to Bitcoin [link] [comments]

(Updated) [Staking] Reddcoin Core client GUI wallet on a Raspberry Pi Model 3B

Intro

This thread is an update to my first Reddcoin staking tutorial that was written 7 months ago.
 
The reason for the update
My Reddcoin Core software crashed and became unusable. My Raspberry Pi 3B would lag and freeze, I couldn't stake anymore.
 
Instead of just redoing everything the same way, I wanted to see if I could improve on 3 points:
 
The updates
 
If you would like to tip me
Writing a tutorial like this takes time and effort; tips are appreciated. My Reddcoin address: RqvdnNX5MTam855Y2Vudv7yVgtXdcYaQAW.
     

Overview

 

Steps

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     

Video

https://www.youtube.com/watch?v=Snr5e8bzftI
This video shows how long it takes to start Reddcoin Core.   TL;DR:
     

Extra

Backup
Backup your wallet to prevent losing the RDDs in your wallet! There are two methods to backup, do both. Make new backups if you create a new receiving address!
 
 
   
Boot with only 1 USB drive plugged in:
Make sure only the USB drive (with the swap partition and data partition) is plugged in when you boot up your Raspberry Pi. This to make sure the swap partition (/dev/sda1) is recognized correctly.   If you boot up with multiple USB drives, Lubuntu might see the USB drive with the swap partition as the second drive (instead of the first drive), and ignore the 2 GB swap partition. If this happens, starting Reddcoin can render the Raspberry Pi unresponsive.
   
Connection issues If you have issues syncing the blockchain because you have 0 network connections, please follow the instructions in this thread.
   
Start Reddcoin Core easier
Run a shell script (.sh file), so you can start Reddcoin just by double clicking on an icon on your Desktop.
   
Minimization options
Adjust minimization options, so you can safely press on the X button (the close/exit button on the upper right corner).
   
RealVNC VNC Viewer (client) and VNC Connect (server): To remote connect to the Raspberry Pi, I use VNC Viewer ad VNC Connect from RealVNC.
 
   
Chromium as browser: The updates break Firefox, the browser crashes when you try to run it. Install another browser, Chromium, to solve this issue.
   
Updates / Upgrades
If Software Updater shows up and tells you that there is updated software available, do not install the updates using Software Updater. Use LXTerminal to update Lubuntu.  
     

Credits:

   
Credits in previous tutorial:
submitted by Yavuz_Selim to reddCoin [link] [comments]

Onboarding Relatives cold wallet, is this feasable?

Hey, so as the hypecycle is progressing i expect to be confronted with relatives that want to get into bitcoin that aren't technically experienced.
I was looking into a way to provide them with safe cold wallets that i can load them some bitcoins on. I don't expect them to use their coins anytime soon so it is ment as store of value for now. As paperwallets a frowned upon nowadays i was thinking about the following procedure.
Now i can see two failure modes for this, obv. i could backup or remember the seedphrases. But i will assume i'm not gonna do that. Second seedphrase is not password protected, but i guess i'm willing to put up with that because inb4 they forget that password and coins are lost or extremly hard to recover.
Any things i forgot? My problem is i'm not willing to teach everybody how to create their own cold wallet and maybe some want more coins than i'm willing to let them have on a hot wallet. I think this is the best and most convenient way for them to accumulate some coins without exchange account kyc hassle and any technical stuff with air gapped devices or even hardwarewallets.
Thoughts appreciated. Is there a better way? Maybe i'm completely delusional about this anyway.
Edit: I just realised "cold wallet" is somehow the wrong term, i suppose it's actually more of an enhanced paper wallet?
submitted by BurnerAccBtc to Bitcoin [link] [comments]

Newly Added Trading Pair on Unnamed Exchange!

Hello, All,
Mincoin now has an MNC/uTip trading pair on Unnamed Exchange as well! https://www.unnamed.exchange/Exchange?market=MNC_uTip
Unnamed also an MNC/BTC trading pair. https://www.unnamed.exchange/Exchange?market=MNC_BTC
...an MNC/LTC trading pair. https://www.unnamed.exchange/Exchange?market=MNC_LTC
and last but not least, an MNC/DOGE trading pair too. https://www.unnamed.exchange/Exchange?market=MNC_DOGE
Please be informed that there now exists a Mincoin Android Wallet that you may download on the Google Play Store. Also, please rate and review the app. Lastly, I am here for whoever wants to chat about anything. You know where to find me at. https://discord.gg/45hq2eC Have a good one! :)
P.S. - You know I have to include a P.S., haha. Please backup all MNC wallets to cold storage, and update to the latest Desktop Mincoin v0.14.3 Wallets, available for Windows, GNU/Linux, and Mac. Read more by following this link to the Mincoin's BitcoinTalk thread: https://bitcointalk.org/index.php?topic=165397.0 Thank you and I hope you enjoy these updates! :)
submitted by lovetolearnmnc to MinCoin [link] [comments]

We need to figure out how to help newbies store and use their bitcoin safely

This is how I do it:
BACKUP:
master private seed words on paper , saved securely.
REGULAR USE:
Preparation: Created a USB bootable linux , install electrum on it , disabled its internet/networking (IMPORTANT!), put private keys in electrum wallet, copy public keys from electrum wallet to usb drive. Boot to regular OS (windows/mac) , open electrum, create watching only wallet with public keys saved on USB.
Using: Create transaction in electrum on regular OS -> save transaction to file on USB . Boot into usb linux -> load transaction from USB in electrum -> sign it, save to USB -> boot to regular OS -> load singed transaction from USB in electrum -> Broadcast!

Add encryption and passwords to the above, and I think its a fairly bullet proof method of storing bitcoins. The private keys are never exposed to any network. I struggled at the part of disabling internet, but it worked out in the end.
Obviously, this process is hard for the average joe. He will just keep his coins on some web wallet, defeating the point of bitcoin, and set themselves up to lose their btc down the road.
There really need to be a method to make this easier. Maybe a modified version of ubuntu, with no networking, encryption and electrum preinstalled ? There is trezor , but I don't have knowledge there. Comments?
submitted by Automataton to Bitcoin [link] [comments]

WARNING: Clipboard MITM attack on Windows in the wild

TLDR: Windows malware intercepts a BTC address copied to the clipboard so that the pasted address is different, diverting funds to the attackers wallet which has 8.8 BTC of transactions. It mangles an XMR address. Visually inspect every transaction destination address before clicking OK!
Update: source for the malware found: a win32diskimager.exe downloaded from download.cnet.com, of all places, with a total of 4,500 downloads. More in the update at the bottom of the post.
Update 3: u/gugap and colleagues posted a detailed analysis here: https://www.welivesecurity.com/2018/03/14/stealing-bitcoin-download-com/
And great news that the file has been removed from CNET!
Original post:
I was setting up xmr-stak on my Windows desktop as the Linux version requires compiling which I'm not comfortable with. I was getting invalid address errors from the pool with two different wallet addresses, and I knew one of them is a good address with certainty having done transactions with it in the past.
After further head-scratching I noticed that the XMR address I copy from my password manager to the config file differs from the one that's pasted! I didn't notice it as the beginning and end characters are the same; the substitution is in the middle. The substitution can be defeated easily by copy-pasting the address in two chunks. But it does substitute the incorrect address even when the address is part of a longer string, such as the entire config file.
The fact that it generates invalid addresses (every time?) made me suspect this attack is meant for some other coin, most likely Bitcoin. I tested with a few BTC and BCH addresses, and it indeed generates the same address every time (below). Possibly the XMR attack is a by-product for the hack searching for BTC address strings, and it spits out an address without destination when confronted with an XMR address. [edit: After doing some further checks, the malware seems to look for the first "1" in the address and substitutes it with his BTC address below. I just learned that (one type of) BTC address always starts with a "1", which confirms the theory.]
While I believe this only allows the attacker to divert BTC funds to his address and doesn't compromise my XMR wallet or private keys, I already created a new wallet on my Linux machine, and moved my funds there. Now I'm considering doing this for all my coins as who knows what other monsters lurk behind the SSDs...
I thought I run a pretty tight ship with my desktop and cryptos, and do most of my computing in Linux. I only install wallets linked from the official websites, and verify checksums. I had heard of such attacks before, and always double-check the pasted address when moving funds. Fortunately I didn't lose any money as I noticed this while setting up XMR mining.
Somehow this got to my computer, and I have to deal with it and tighten my controls. Now, is there a secure way to clean my computer, or should I re-install Windows completely?
Below sample outputs for XMR and BTC addresses:
Correct XMR address generated with moneroaddress.org, copied in two chunks: 466mBJsXq4k8n4aampbico1Mn3muVyiBJUpfmq4oGjmrMCP1ZuXCz69HfuHDpsT1BQZKqdp2CV3QV5nUEsqSg1ygegLmqRygj Incorrect address when copy-pasting in one go, substitutions in bold, the address is different for each XMR address: 466mBJsXq4k8n4aampbico1BQZKqdp2CV3QV5nUEsqSg1ygegLmqRygjHDpsT1BQZKqdp2CV3QV5nUEsqSg1ygegLmqRygj
Another correct XMR address: 41BQZKqdp2CV3QV5nUEsqSg1ygegLmqRygjbRErDcCVrMLtZ5u1BQZKqdp2CV3QV5nUEsqSg1ygegLmqRygjiMQcTg
Incorrect address which differs from the previous one: YmNRSAn6JQP7jNuWYieZEx1BQZKqdp2CV3QV5nUEsqSg1ygegLmqRygj Correct Bitcoin address: 1GfyupfMmoNn9w9f9S7NQ6ouL1cgZW8MvM
Turns into this incorrect Bitcoin address, same address every time (at the time of writing it has 230 transactions worth 8.8 BTC). This BTC address is in the substitution in the XMR address above in bold. 1BQZKqdp2CV3QV5nUEsqSg1ygegLmqRygj
ALWAYS visually check that the address you send to is actually the one you copied. Don't just skip past the withdrawal confirmation page on your exchange; double-check that it is identical to the one you intend to send funds to.
Update:
Many have asked about the potential source. I know it's not an email as I don't use POP, and don't open attachments. Likely attack vectors are web ads, PDFs, or some crypto software I've installed recently. Haven't found the source, though.
For cleaning, F-Prot didn't find anything, Malwarebytes found the following and I quarantined them. After resetting twice my clipboard copies a Bitcoin address correctly. I will still re-install Windows completely just to be safe.
-Log Details- Scan Date: 3/13/18 Scan Time: 2:49 AM Log File: c03c0f4c-2660-11e8-a3f7-00ff86126b17.json Administrator: Yes
-Software Information- Version: 3.4.4.2398 Components Version: 1.0.322 Update Package Version: 1.0.4322 License: Trial
-System Information- OS: Windows 7 Service Pack 1 CPU: x64 File System: NTFS User: [username]
-Scan Summary- Scan Type: Threat Scan Result: Completed Objects Scanned: 267751 Threats Detected: 8 Threats Quarantined: 0 (No malicious items detected) Time Elapsed: 1 min, 58 sec
-Scan Options- Memory: Enabled Startup: Enabled Filesystem: Enabled Archives: Enabled Rootkits: Disabled Heuristics: Enabled PUP: Detect PUM: Detect
-Scan Details- Process: 1 Generic.Malware/Suspicious, C:\USERS[username]\APPDATA\ROAMING\DIBIFU_8\GO.EXE, No Action By User, [0], [392686],1.0.4322
Module: 1 Generic.Malware/Suspicious, C:\USERS[username]\APPDATA\ROAMING\DIBIFU_8\GO.EXE, No Action By User, [0], [392686],1.0.4322
Registry Key: 0 (No malicious items detected)
Registry Value: 1 Generic.Malware/Suspicious, HKU\S-1-5-21-1088663161-714082877-1087069783-1000\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN|ScdBcd, No Action By User, [0], [392686],1.0.4322
Registry Data: 0 (No malicious items detected)
Data Stream: 0 (No malicious items detected)
Folder: 0 (No malicious items detected)
File: 5 Generic.Malware/Suspicious, C:\USERS[username]\APPDATA\ROAMING\DIBIFU_8\GO.EXE, No Action By User, [0], [392686],1.0.4322 PUP.Optional.CrossRider, C:\WINDOWS\TEMP\FPQ8E3E.TMP, No Action By User, [204], [299102],1.0.4322 PUP.Optional.CrossRider, C:\WINDOWS\TEMP\FPQBAB4.TMP, No Action By User, [204], [299102],1.0.4322 PUP.Optional.CrossRider, C:\WINDOWS\TEMP\FPQD51D.TMP, No Action By User, [204], [299102],1.0.4322 PUP.Optional.CrossRider, C:\WINDOWS\TEMP\FPQE59F.TMP, No Action By User, [204], [299102],1.0.4322
Physical Sector: 0 (No malicious items detected)
(end)
Update 2:
Thanks to u/gugap I found the source for the infection!
Step-by-step. I was doing a backup of one of my Raspbian installs a few weeks back, and downloaded Win32 Disk Imager from download.cnet.com: http://download.cnet.com/s/win32-disk-image
I uploaded the file to VirusTotal, and got a scary list of suspicious items VirusTotal found in the file:
CAT-QuickHeal Trojan.IGENERIC Cylance
Endgame malicious (high confidence) ESET-NOD32
Fortinet MSIL/ClipBanker.DF!tr McAfee
McAfee-GW-Edition Artemis Sophos AV
TrendMicro-HouseCall Suspicious_GEN.F47V0119 VBA32
Seems like we found the source for McAfee's wealth j/k. Here the full report: https://www.virustotal.com/#/file/7b3d52200895d02bee51fc03217088a383158494dcac5f570dd875cdd1f2f248/detection
F-Secure didn't recognize anything then or today. I downloaded again just now, and it's infected. I reran it through Malwarebytes as well and it doesn't detect malware, either, only after the payload has been delivered.
Thanks again to u/gugap and others for helping find the source! Given the source is a CNET site I had less reason to suspect it, so I don't feel like a total idiot.
On the other hand, it's pretty scary that 4,500 (!) people have downloaded that file in the past two years (!!), over three hundred in the past week alone! I reported the file to CNET.
Also, it is very difficult to avoid such malware if AV doesn't detect it, and it's coming from a legit site. Time to ditch Windows for good, and start using airgapped TAILS for working with private keys.
submitted by Crawsh to Monero [link] [comments]

How do I backup My Bitcoin Diamond Core Wallet  How To Secure Backing up Your bitcoins using the Electrum Bitcoin Wallet How to backup your Litecoin Wallet How to backup and restore a Bitcoin mobile wallet 13. Learn how to Backup your Bitcoin Seed on SEEDPLATE metal backup.

Additionally you can also backup the entire wallet data file. Electrum wallet backup. There are three ways to backup your electrum wallet. 1.You can backup by writing down the seed word. 2 You can save the wallet data file and 3. Backup via private keys. Here we’ll explain all the three approaches. Backup wallet mnemonic seed Restoring the funds of your Bitcoin Wallet has never been so easy! With the all new Bitcoin ownership, the users will be able to back up their mnemonic seed phrase in a bid to restore their funds in case of emergency.Just for an example, a device containing the Bitcoin Wallet of a user can get stolen, lost or can even get broken and to retrieve the funds, the users need to have a backup of Linux: ~/.bitcoin/ This is not only a default directory for Bitcoin but most cryptocurrency core wallet by default puts its data in this location. But if you’ve chosen a custom directory and do not know where it is located then open your wallet, navigate to Help >> Debug Window and in general information you’ll find the Data directory.. This is the location where you’ll find wallet.dat The actual backup of your bitcoin isn’t on the wallet, but a hardware wallet acts like a physical key that you can insert into your computer which then lets the blockchain know who you are (and Two-factor authentication (2FA) is a way to add additional security to your wallet. The first 'factor' is your password for your wallet. The second 'factor' is a verification code retrieved via text message or from an app on a mobile device. 2FA is conceptually similar to a security token device that banks in some countries require for online banking.

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How do I backup My Bitcoin Diamond Core Wallet How To Secure

Intro tutorial for those new to Bitcoin 2 giving a quick overview and a tutorial on setting up the wallet on Windows and backing up and restoring the wallet key Twitter @BTC2Bull. How to Back Up a BitPay Bitcoin Wallet and Restore a Wallet from a Backup Phrase - Duration: 2:41. BitPay 23,067 views. 2:41. How To Back Up Your PRIVATE KEYS For Your Cryptocurrency Wallets! By ... In this video you will learn how to permanently "engrave" your Bitcoin Wallet 24 words (BIP39) Seed backup on SEEDPLATE metal backup system. Get your SEEDPLATE at https://bitcoinseedbackup.com ... Bitcoin How to import your old wallet into new one tutorial works 100% Recovered 1.7 BTC - Duration: 8:26. XOOMdotWS 9,189 views The Crypto Dad shows you how to back up the Electrum Bitcoin wallet. I go through making sure your password is stored in a safe place. Then I talk about printing out the seed and keeping it safe.

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