Electrum Bitcoin Wallet

Cannot create wallet with Trezor

Hi guys, I am stuck trying to create a wallet for my Trezor with Electrum 4.0.4 on Linux:
I get to the point of entering the password twice and then selecting the path. But after that it just says
'Please wait' and then the window hangs. The only way to do something is either kill the process or send a `SIGINT` signal.
Interestingly after sending a SIGINT the window unfreezes and asks me again for the password (also during the whole freeze the Trezor device writes that I should enter my password). After entering the password again I get an empty error window and on closing it everything closes.
I started electrum with `electrum -v` to get some logs:
$ electrum -v I | logging | Electrum version: 4.0.4 - https://electrum.org - https://github.com/spesmilo/electrum I | logging | Python version: 3.8.6 (default, Sep 30 2020, 04:00:38) [GCC 10.2.0]. On platform: Linux-5.8.14-arch1-1-x86_64-with-glibc2.2.5 I | logging | Logging to file: None I | logging | Log filters: verbosity '*', verbosity_shortcuts '' I/p | plugin.Plugins | registering hardware bitbox02: ('hardware', 'bitbox02', 'BitBox02') I/p | plugin.Plugins | registering hardware coldcard: ('hardware', 'coldcard', 'Coldcard Wallet') I/p | plugin.Plugins | registering hardware digitalbitbox: ('hardware', 'digitalbitbox', 'Digital Bitbox wallet') I/p | plugin.Plugins | registering hardware keepkey: ('hardware', 'keepkey', 'KeepKey wallet') I/p | plugin.Plugins | registering hardware ledger: ('hardware', 'ledger', 'Ledger wallet') I/p | plugin.Plugins | registering hardware safe_t: ('hardware', 'safe_t', 'Safe-T mini wallet') I/p | plugin.Plugins | registering hardware trezor: ('hardware', 'trezor', 'Trezor wallet') I/p | plugin.Plugins | registering wallet type ('2fa', 'trustedcoin') D | util.profiler | Plugins.__init__ 0.0044 I/n | network | blockchains [0] I | exchange_rate.FxThread | using exchange CoinGecko D | util.profiler | Daemon.__init__ 0.0023 I/n | network | starting network I | daemon.Daemon | launching GUI: qt I/n | network | setting proxy None I | daemon.Daemon | starting taskgroup. I/n | network | connecting to electrumx.ftp.sh:50002:s as new interface I/n | network | starting taskgroup. I | gui.qt.history_list | could not import electrum.plot. This feature needs matplotlib to be installed. I | gui.qt.ElectrumGui | Qt GUI starting up... Qt=5.15.1, PyQt=5.15.1 I/i | interface.[localhost:50002] | connection established. version: ['ElectrumPersonalServer 0.2.0', '1.4'] D | util.profiler | ElectrumGui.__init__ 0.1374 I/i | interface.[vmd27610.contaboserver.net:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-2, 'Name or service not known'))) I/n | network | couldn't launch iface vmd27610.contaboserver.net:50002:s -- CancelledError() I/i | interface.[electrumx.ftp.sh:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-2, 'Name or service not known'))) I/n | network | couldn't launch iface electrumx.ftp.sh:50002:s -- CancelledError() I/i | interface.[rbx.curalle.ovh:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-2, 'Name or service not known'))) I/i | interface.[2AZZARITA.hopto.org:50006] | connection established. version: ['ElectrumX 1.15.0', '1.4'] I/n | network | couldn't launch iface rbx.curalle.ovh:50002:s -- CancelledError() I/i | interface.[2AZZARITA.hopto.org:50006] | set blockchain with height 653567 I/i | interface.[2AZZARITA.hopto.org:50006] | skipping header 653566 I/n | network | no height for main interface I/n | network | fee_estimates {25: 46526, 10: 48176, 5: 50745, 2: 50750} I/i | interface.[hsmiths4fyqlw5xw.onion:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-2, 'Name or service not known'))) I/n | network | couldn't launch iface hsmiths4fyqlw5xw.onion:50002:s -- CancelledError() I/n | network | switching to 2AZZARITA.hopto.org:50006:s I/i | interface.[electrum3.hodlister.co:50002] | connection established. version: ['ElectrumX 1.10.0', '1.4'] I/n | network | fee_histogram [[99, 100899], [71, 112316], [61, 132563], [59, 156116], [57, 175394], [54, 114050], [51, 219092], [49, 195934], [48, 565137], [47, 781451], [46, 883591], [45, 259824], [44, 450143], [43, 114488], [42, 22100], [41, 49428], [40, 106542], [38, 151315], [33, 547095], [22, 620244], [13, 648588], [9, 822409], [5, 741398], [3, 1799486], [2, 651429]] I/n | network | fee_histogram [[99, 100899], [71, 112316], [61, 132563], [59, 156116], [57, 175394], [54, 114050], [51, 219092], [49, 195934], [48, 565137], [47, 781451], [46, 883591], [45, 259824], [44, 450143], [43, 114488], [42, 22100], [41, 49428], [40, 106542], [38, 151315], [33, 547095], [22, 620244], [13, 648588], [9, 822409], [5, 741398], [3, 1799486], [2, 651429]] I/i | interface.[bitcoin.corgi.party:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-5, 'No address associated with hostname'))) I/n | network | couldn't launch iface bitcoin.corgi.party:50002:s -- CancelledError() I/i | interface.[electrumx-core.1209k.com:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(OSError(101, 'Network is unreachable'))) I/n | network | couldn't launch iface electrumx-core.1209k.com:50002:s -- CancelledError() I/i | interface.[electrum3.hodlister.co:50002] | set blockchain with height 653567 I/i | interface.[electrum3.hodlister.co:50002] | skipping header 653567 I/n | network | fee_estimates {25: 46526, 10: 48176, 5: 50745, 2: 50749} I/i | interface.[hsmiths5mjk6uijs.onion:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-2, 'Name or service not known'))) I/n | network | couldn't launch iface hsmiths5mjk6uijs.onion:50002:s -- CancelledError() I/i | interface.[dxm.no-ip.biz:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(ConnectionRefusedError(111, "Connect call failed ('77.6.34.45', 50002)"))) I/n | network | couldn't launch iface dxm.no-ip.biz:50002:s -- CancelledError() I/i | interface.[electrum2.eff.ro:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-2, 'Name or service not known'))) I/n | network | couldn't launch iface electrum2.eff.ro:50002:s -- CancelledError() I/i | interface.[electrum.hsmiths.com:50002] | disconnecting due to: ConnectError(ConnectionResetError(104, 'Connection reset by peer')) I/n | network | couldn't launch iface electrum.hsmiths.com:50002:s -- CancelledError() I | storage.WalletStorage | wallet path /home/bene/.electrum/wallets/default_wallet I/i | interface.[bitcoin.aranguren.org:50002] | connection established. version: ['ElectrumX 1.15.0', '1.4'] I | storage.WalletStorage | wallet path /home/bene/.electrum/wallets/default_wallet I/i | interface.[bitcoin.aranguren.org:50002] | set blockchain with height 653567 I/i | interface.[bitcoin.aranguren.org:50002] | skipping header 653566 [240/1884] I/n | network | fee_estimates {25: 46526, 10: 48176, 5: 50745, 2: 50749} I/i | interface.[localhost:50002] | set blockchain with height 653567 I/i | interface.[localhost:50002] | skipping header 653567 I/n | network | fee_estimates {25: 46526, 10: 48175, 5: 50745, 2: 50749} I/p | plugin.Plugins | loaded bitbox02 I/p | plugin.Plugins | loaded coldcard I/p | plugin.Plugins | loaded digitalbitbox I/p | plugin.Plugins | loaded keepkey I/p | plugin.Plugins | loaded ledger I/p | plugin.Plugins | loaded safe_t I/p | plugin.Plugins | loaded trezor I | plugin.DeviceMgr | scanning devices... D | util.profiler | DeviceMgr.scan_devices 0.0244 W | gui.qt.installwizard.InstallWizard | error getting device infos for bitbox02: Missing libraries for bitbox02. // Make sure you install it with python3 W | gui.qt.installwizard.InstallWizard | error getting device infos for coldcard: Missing libraries for coldcard. // Make sure you install it with python3 W | gui.qt.installwizard.InstallWizard | error getting device infos for keepkey: Missing libraries for keepkey. // Make sure you install it with python3 W | gui.qt.installwizard.InstallWizard | error getting device infos for ledger: Missing libraries for ledger. // Make sure you install it with python3 W | gui.qt.installwizard.InstallWizard | error getting device infos for safe_t: Missing libraries for safe_t. // Make sure you install it with python3 I | plugins.trezor.qt.Plugin | connecting to device at webusb:001:3 I | plugins.trezor.qt.Plugin | connected to device at webusb:001:3 I | plugin.DeviceMgr | Registering My TREZOF3342BDD7C90C7F9FBA58136 I | plugin.DeviceMgr | scanning devices... D | util.profiler | DeviceMgr.scan_devices 0.0388 I/i | interface.[localhost:50002] | skipping header 653567 qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 4028, resource id: 14687032, major code: 40 (TranslateCoords), minor code: 0 I | plugin.DeviceMgr | scanning devices... D | util.profiler | DeviceMgr.scan_devices 0.0407 
This is the point where the window freezes. Then I precc `Ctrl+C` to send a SIGINT signal and then this is the rest of the logs:
I/n | network | couldn't launch iface technetium.network:50002:s -- TimeoutError() I/n | network | couldn't launch iface e2.keff.org:50002:s -- TimeoutError() I/n | network | couldn't launch iface electrum-server.ninja:50002:s -- TimeoutError() I/n | network | couldn't launch iface xray587.startdedicated.de:50002:s -- TimeoutError() I/n | network | couldn't launch iface electrum.mindspot.org:50002:s -- TimeoutError() I/i | interface.[electrum.leblancnet.us:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-2, 'Name or service not known'))) I/n | network | couldn't launch iface electrum.leblancnet.us:50002:s -- CancelledError() I/i | interface.[ex01.axalgo.com:50002] | succeeded in getting cert I/i | interface.[electrumx.schulzemic.net:50002] | succeeded in getting cert ^CE | gui.qt.installwizard.InstallWizard | Traceback (most recent call last): File "/uslib/python3.8/site-packages/electrum/base_wizard.py", line 446, in on_hw_derivation xpub = self.plugin.get_xpub(device_info.device.id_, derivation, xtype, self) File "/uslib/python3.8/site-packages/electrum/plugins/trezotrezor.py", line 315, in get_xpub xpub = client.get_xpub(derivation, xtype) File "/uslib/python3.8/site-packages/electrum/plugin.py", line 362, in wrapper return run_in_hwd_thread(partial(func, *args, **kwargs)) File "/uslib/python3.8/site-packages/electrum/plugin.py", line 355, in run_in_hwd_thread return fut.result() File "/uslib/python3.8/concurrent/futures/_base.py", line 434, in result self._condition.wait(timeout) File "/uslib/python3.8/threading.py", line 302, in wait waiter.acquire() KeyboardInterrupt I/i | interface.[ex01.axalgo.com:50002] | connection established. version: ['ElectrumX 1.14.0', '1.4'] I/i | interface.[electrumx.schulzemic.net:50002] | connection established. version: ['ElectrumX 1.15.0', '1.4'] I/i | interface.[ex01.axalgo.com:50002] | set blockchain with height 653567 I/i | interface.[ex01.axalgo.com:50002] | skipping header 653567 I/n | network | fee_estimates {25: 46526, 10: 48176, 5: 50745, 2: 50749} I/i | interface.[electrumx.schulzemic.net:50002] | set blockchain with height 653567 I/i | interface.[electrumx.schulzemic.net:50002] | skipping header 653567 I/n | network | fee_estimates {25: 46526, 10: 48176, 5: 50745, 2: 50749} I/n | network | couldn't launch iface dragon085.startdedicated.de:50002:s -- TimeoutError() I/i | interface.[btc.electroncash.dk:60002] | succeeded in getting cert I/i | interface.[mxhwmwa3nt2si4ufszm24whlpkruu74jle27ys2fyjuiifbbrub6thyd.onion:50006] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-2, 'Name or service not known'))) I/n | network | couldn't launch iface mxhwmwa3nt2si4ufszm24whlpkruu74jle27ys2fyjuiifbbrub6thyd.onion:50006:s -- CancelledError() I/i | interface.[electrum2.villocq.com:50002] | disconnecting due to: ErrorGettingSSLCertFromServer(ConnectError(gaierror(-5, 'No address associated with hostname'))) I/n | network | couldn't launch iface electrum2.villocq.com:50002:s -- CancelledError() I/i | interface.[btc.electroncash.dk:60002] | connection established. version: ['ElectrumX 1.15.0', '1.4'] I/i | interface.[btc.electroncash.dk:60002] | set blockchain with height 653567 I/i | interface.[btc.electroncash.dk:60002] | skipping header 653567 I/n | network | fee_estimates {25: 46526, 10: 48176, 5: 50745, 2: 50749} I/i | interface.[btc.electrum.bitbitnet.net:50002] | connection established. version: ['ElectrumX 1.15.0', '1.4'] I/i | interface.[btc.electrum.bitbitnet.net:50002] | set blockchain with height 653567 [169/1884] I/i | interface.[btc.electrum.bitbitnet.net:50002] | skipping header 653567 I/n | network | fee_estimates {25: 46526, 10: 48176, 5: 50745, 2: 50749} I | plugin.DeviceMgr | scanning devices... D | util.profiler | DeviceMgr.scan_devices 0.0394 W | gui.qt.installwizard.InstallWizard | error getting device infos for bitbox02: Missing libraries for bitbox02. // Make sure you install it with python3 W | gui.qt.installwizard.InstallWizard | error getting device infos for coldcard: Missing libraries for coldcard. // Make sure you install it with python3 W | gui.qt.installwizard.InstallWizard | error getting device infos for keepkey: Missing libraries for keepkey. // Make sure you install it with python3 W | gui.qt.installwizard.InstallWizard | error getting device infos for ledger: Missing libraries for ledger. // Make sure you install it with python3 W | gui.qt.installwizard.InstallWizard | error getting device infos for safe_t: Missing libraries for safe_t. // Make sure you install it with python3 I/i | interface.[bitcoin.aranguren.org:50002] | skipping header 653567 E | daemon.Daemon | GUI raised exception: ReRunDialog(). shutting down. I | gui.qt.ElectrumGui | closing GUI I | daemon.Daemon | shutting down network I/n | network | stopping network I/n | network | couldn't launch iface electrum.hodlister.co:50002:s -- CancelledError() I/n | network | couldn't launch iface orannis.com:50002:s -- CancelledError() I/i | interface.[localhost:50002] | disconnecting due to: CancelledError() I/i | interface.[electrumx.schulzemic.net:50002] | disconnecting due to: CancelledError() I/i | interface.[ex01.axalgo.com:50002] | disconnecting due to: CancelledError() I/i | interface.[2AZZARITA.hopto.org:50006] | disconnecting due to: CancelledError() I/i | interface.[btc.electroncash.dk:60002] | disconnecting due to: CancelledError() I/i | interface.[electrum3.hodlister.co:50002] | disconnecting due to: CancelledError() I/i | interface.[btc.electrum.bitbitnet.net:50002] | disconnecting due to: CancelledError() I/i | interface.[bitcoin.aranguren.org:50002] | disconnecting due to: CancelledError() I/n | network | taskgroup stopped. I | daemon.Daemon | stopping taskgroup I | daemon.Daemon | taskgroup stopped. I | daemon.Daemon | removing lockfile I | daemon.Daemon | stopped E | __main__ | daemon.run_gui errored Traceback (most recent call last): File "/uslib/python3.8/site-packages/electrum/gui/qt/installwizard.py", line 118, in func_wrapper run_next(*out) File "/uslib/python3.8/site-packages/electrum/base_wizard.py", line 193, in on_wallet_type self.run(action) File "/uslib/python3.8/site-packages/electrum/base_wizard.py", line 115, in run f(*args, **kwargs) File "/uslib/python3.8/site-packages/electrum/base_wizard.py", line 225, in choose_keystore self.choice_dialog(title=title, message=message, choices=choices, run_next=self.run) File "/uslib/python3.8/site-packages/electrum/gui/qt/installwizard.py", line 106, in func_wrapper out = func(*args, **kwargs) File "/uslib/python3.8/site-packages/electrum/gui/qt/installwizard.py", line 594, in choice_dialog self.exec_layout(vbox, title) File "/uslib/python3.8/site-packages/electrum/gui/qt/installwizard.py", line 429, in exec_layout raise GoBack from None electrum.base_wizard.GoBack The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/usbin/electrum", line 380, in  d.run_gui(config, plugins) File "/uslib/python3.8/site-packages/electrum/daemon.py", line 566, in run_gui self.gui_object.main() File "/uslib/python3.8/site-packages/electrum/gui/qt/__init__.py", line 363, in main if not self.start_new_window(path, self.config.get('url'), app_is_starting=True): File "/uslib/python3.8/site-packages/electrum/gui/qt/__init__.py", line 247, in wrapper return func(self, *args, **kwargs) File "/uslib/python3.8/site-packages/electrum/gui/qt/__init__.py", line 271, in start_new_window wallet = self._start_wizard_to_select_or_create_wallet(path) File "/uslib/python3.8/site-packages/electrum/gui/qt/__init__.py", line 313, in _start_wizard_to_select_or_create_wallet wizard.run('new') File "/uslib/python3.8/site-packages/electrum/base_wizard.py", line 115, in run f(*args, **kwargs) File "/uslib/python3.8/site-packages/electrum/base_wizard.py", line 153, in new self.choice_dialog(title=title, message=message, choices=choices, run_next=self.on_wallet_type) File "/uslib/python3.8/site-packages/electrum/gui/qt/installwizard.py", line 131, in func_wrapper raise ReRunDialog() from e electrum.base_wizard.ReRunDialog I/p | plugin.Plugins | stopped 
submitted by bIacktemplar to Electrum [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]

Which type of curren(t) do you want to see(cy)? A analysis of the intention behind bitcoin(s). [Part 2]

Part 1
It's been a bit of time since the first post during which I believe things have crystallised further as to the intentions of the three primary bitcoin variants. I was going to go on a long winded journey to try to weave together the various bits and pieces to let the reader discern from themselves but there's simply too much material that needs to be covered and the effort that it would require is not something that I can invest right now.
Firstly we must define what bitcoin actually is. Many people think of bitcoin as a unit of a digital currency like a dollar in your bank but without a physical substrate. That's kind of correct as a way to explain its likeness to something many people are familiar with but instead it's a bit more nuanced than that. If we look at a wallet from 2011 that has never moved any coins, we can find that there are now multiple "bitcoins" on multiple different blockchains. This post will discuss the main three variants which are Bitcoin Core, Bitcoin Cash and Bitcoin SV. In this respect many people are still hotly debating which is the REAL bitcoin variant and which bitcoins you want to be "investing" in.
The genius of bitcoin was not in defining a class of non physical objects to send around. Why bitcoin was so revolutionary is that it combined cryptography, economics, law, computer science, networking, mathematics, etc. and created a protocol which was basically a rule set to be followed which creates a game of incentives that provides security to a p2p network to prevent double spends. The game theory is extremely important to understand. When a transaction is made on the bitcoin network your wallet essentially generates a string of characters which includes your public cryptographic key, a signature which is derived from the private key:pub key pair, the hash of the previous block and an address derived from a public key of the person you want to send the coins to. Because each transaction includes the hash of the previous block (a hash is something that will always generate the same 64 character string result from EXACTLY the same data inputs) the blocks are literally chained together. Bitcoin and the blockchain are thus defined in the technical white paper which accompanied the release client as a chain of digital signatures.
The miners validate transactions on the network and compete with one another to detect double spends on the network. If a miner finds the correct solution to the current block (and in doing so is the one who writes all the transactions that have elapsed since the last block was found, in to the next block) says that a transaction is confirmed but then the rest of the network disagree that the transactions occurred in the order that this miner says (for double spends), then the network will reject the version of the blockchain that that miner is working on. In that respect the miners are incentivised to check each other's work and ensure the majority are working on the correct version of the chain. The miners are thus bound by the game theoretical design of NAKAMOTO CONSENSUS and the ENFORCES of the rule set. It is important to note the term ENFORCER rather than RULE CREATOR as this is defined in the white paper which is a document copyrighted by Satoshi Nakamoto in 2009.

Now if we look at the three primary variants of bitcoin understanding these important defining characteristics of what the bitcoin protocol actually is we can make an argument that the variants that changed some of these defining attributes as no longer being bitcoin rather than trying to argue based off market appraisal which is essentially defining bitcoin as a social media consensus rather than a set in stone rule set.
BITCOIN CORE: On first examination Bitcoin Core appears to be the incumbent bitcoin that many are being lead to believe is the "true" bitcoin and the others are knock off scams. The outward stated rationale behind the bitcoin core variant is that computational resources, bandwidth, storage are scarce and that before increasing the size of each block to allow for more transactions we should be increasing the efficiency with which the data being fed in to a block is stored. In order to achieve this one of the first suggested implementations was a process known as SegWit (segregating the witness data). This means that when you construct a bitcoin transaction, in the header of the tx, instead of the inputs being public key and a signature + Hash + address(to), the signature data is moved outside of header as this can save space within the header and allow more transactions to fill the block. More of the history of the proposal can be read about here (bearing in mind that article is published by the bitcoinmagazine which is founded by ethereum devs Vitalik and Mihai and can't necessarily be trusted to give an unbiased record of events). The idea of a segwit like solution was proposed as early as 2012 by the likes of Greg Maxwell and Luke Dash Jnr and Peter Todd in an apparent effort to "FIX" transaction malleability and enable side chains. Those familiar with the motto "problem reaction solution" may understand here that the problem being presented may not always be an authentic problem and it may actually just be necessary preparation for implementing a desired solution.
The real technical arguments as to whether moving signature data outside of the transaction in the header actually invalidates the definition of bitcoin as being a chain of digital signatures is outside my realm of expertise but instead we can examine the character of the individuals and groups involved in endorsing such a solution. Greg Maxwell is a hard to know individual that has been involved with bitcoin since its very early days but in some articles he portrays himself as portrays himself as one of bitcoins harshest earliest critics. Before that he worked with Mozilla and Wikipedia and a few mentions of him can be found on some old linux sites or such. He has no entry on wikipedia other than a non hyperlinked listing as the CTO of Blockstream. Blockstream was a company founded by Greg Maxwell and Adam Back, but in business registration documents only Adam Back is listed as the business contact but registered by James Murdock as the agent. They received funding from a number of VC firms but also Joi Ito and Reid Hoffman and there are suggestions that MIT media labs and the Digital Currency Initiative. For those paying attention Joi Ito and Reid Hoffman have links to Jeffrey Epstein and his offsider Ghislaine Maxwell.

Ghislaine is the daughter of publishing tycoon and fraudster Robert Maxwell (Ján Ludvík Hyman Binyamin Hoch, a yiddish orthodox czech). It is emerging that the Maxwells are implicated with Mossad and involved in many different psyops throughout the last decades. Greg Maxwell is verified as nullc but a few months ago was outed using sock puppets as another reddit user contrarian__ who also admits to being Jewish in one of his comments as the former. Greg has had a colourful history with his roll as a bitcoin core developer successfully ousting two of the developers put there by Satoshi (Gavin Andreson and Mike Hearn) and being referred to by Andreson as a toxic troll with counterpart Samon Mow. At this point rather than crafting the narrative around Greg, I will provide a few links for the reader to assess on their own time:
  1. https://coinspice.io/news/btc-dev-gregory-maxwell-fake-social-media-account-accusations-nonsense/
  2. https://www.trustnodes.com/2017/06/06/making-gregory-maxwell-bitcoin-core-committer-huge-mistake-says-gavin-andresen
  3. https://www.ccn.com/gavin-andresen-samson-mow-and-greg-maxwell-toxic-trolls//
  4. https://www.nytimes.com/2016/01/17/business/dealbook/the-bitcoin-believer-who-gave-up.html
  5. https://www.coindesk.com/mozilla-accepting-bitcoin-donations
  6. https://spectrum.ieee.org/tech-talk/computing/networks/the-bitcoin-for-is-a-coup
  7. https://www.reddit.com/btc/comments/68pusp/gavin_andresen_on_twitter_im_looking_for_beta/dh1cmfl/
  8. https://www.reddit.com/btc/comments/d14qee/can_someone_post_the_details_of_the_relationships/?ref=tokendaily
  9. https://www.coindesk.com/court-docs-detail-sexual-misconduct-allegations-against-bitcoin-consultant-peter-todd
  10. https://coinspice.io/news/billionaire-jeffrey-epstein-btc-maximalist-bitcoin-is-a-store-of-value-not-a-currency/
  11. https://www.dailymail.co.uk/news/article-7579851/More-300-paedophiles-arrested-worldwide-massive-child-abuse-website-taken-down.html
  12. https://news.bitcoin.com/risks-segregated-witness-opening-door-mining-cartels-undermine-bitcoin-network/
  13. https://micky.com.au/craig-wrights-crackpot-bitcoin-theory-covered-by-uks-financial-times/
  14. https://www.reddit.com/btc/comments/74se80/wikipedia_admins_gregory_maxwell_of_blockstream/

Now I could just go on dumping more and more articles but that doesn't really weave it all together. Essentially it is very well possible that the 'FIX' of bitcoin proposed with SegWit was done by those who are moral reprobates who have been rubbing shoulders money launderers and human traffickers. Gregory Maxwell was removed from wikipedia, worked with Mozilla who donated a quarter of a million to MIT media labs and had relationship with Joi Ito, the company he founded received funding from people associated with Epstein who have demonstrated their poor character and dishonesty and attempted to wage toxic wars against those early bitcoin developers who wished to scale bitcoin as per the white paper and without changing consensus rules or signature structures.
The argument that BTC is bitcoin because the exchanges and the market have chosen is not necessarily a logical supposition when the vast majority of the money that has flown in to inflate the price of BTC comes from a cryptographic USD token that was created by Brock Pierce (Might Ducks child stahollywood pedo scandal Digital Entertainment Network) who attended Jeffrey Epstein's Island for conferences. The group Tether who issues the USDT has been getting nailed by the New York Attorney General office with claims of $1.4 trillion in damages from their dodgey practices. Brock Pierce has since distanced himself from Tether but Blockstream still works closely with them and they are now exploring issuing tether on the ethereum network. Tether lost it's US banking partner in early 2017 before the monstrous run up for bitcoin prices. Afterwards they alleged they had full reserves of USD however, they were never audited and were printing hundreds of millions of dollars of tether each week during peak mania which was used to buy bitcoin (which was then used as collateral to issue more tether against the bitcoin they bought at a value they inflated). Around $30m in USDT is crossing between China to Russia daily and when some of the groups also related to USDT/Tether were raided they found them in possession of hundreds of thousands of dollars worth of counterfeit physical US bills.
Because of all this it then becomes important to reassess the arguments that were made for the implementation of pegged sidechains, segregated witnesses and other second layer solutions. If preventing the bitcoin blockchain from bloating was the main argument for second layer solutions, what was the plan for scaling the data related to the records of transactions that occur on the second layer. You will then need to rely on less robust ways of securing the second layer than Proof Of Work but still have the same amount of data to contend with, unless there was plans all along for second layer solutions to enable records to be deleted /pruned to facilitate money laundering and violation of laws put in place to prevent banking secrecy etc.
There's much more to it as well and I encourage anyone interested to go digging on their own in to this murky cesspit. Although I know very well what sort of stuff Epstein has been up to I have been out of the loop and haven't familiarised myself with everyone involved in his network that is coming to light.
Stay tuned for part 3 which will be an analysis of the shit show that is the Bitcoin Cash variant...
submitted by whipnil to C_S_T [link] [comments]

Vertnode - An automated solution for installing Vertcoin node(s) on Single Board Computers

Hello Vertcoin Community,
Eager to contribute to the Vertcoin Community I began creating step by step walkthrough guides on how to get a Vertcoin node up and running on a Raspberry Pi, Raspberry Pi Zero and Intel NUC. Along with information to get a Vertcoin node up and running was also optional steps to install p2pool-vtc.
I decided that while this step by step guide might be helpful to a few, a setup script may prove to be useful to a wider range of people. I have this script to a point where I think it may be productive to share with a bigger audience, for those who are brave and have this hardware sitting around or like to tinker with projects; I invite you to test this setup script if you are interested, if you run into errors any sort of verbose console output of the error proves to be extremely helpful in troubleshooting.
The script was designed to produce a “headless” server... meaning we will not be using a GUI to configure Vertcoin or check to see how things are running. In fact, once the server is set up, you will only interact with it using command line calls over SSH. The idea is to have this full node be simple, low-power, with optimized memory usage and something that “just runs” in your basement, closet, etc.
Why run a headless node on a Single Board Computer?
The idea is to have this full node be simple, low-power, with optimized memory usage and something that “just runs” in your basement, closet, etc.
Required: USB Flash Drive 6GB - 32GB
Please note that the script was designed for Single Board Computers first and looks for an accessible USB Flash Drive to use for storing the blockchain and swap file, as constant writing to a microSD can degrade the health of the microSD.
Supports

Hardware

All of the hardware listed above is hardware that I have personally tested / am testing on myself. The plan is to continue expanding my arsenal of single board computers and continue to add support for more hardware to ensure as much compatibility as possible.
Functionality
It is worth noting that LIT can be ran with multiple configurations, the ones displayed in the Post Installation Report reflect values that run LIT with the Vertcoin Mainnet. Please be aware that the Vertcoin Testnet chain has not been mined 100% of the time in the past, if you make transactions on the Vertcoin testnet that do not go through it is likely because the chain has stopped being mined.
BE CAREFUL WITH YOUR COINS, ONLY TEST WITH WHAT YOU ARE OKAY WITH LOSING IF YOU USE THE MAINNET.

Vertcoin Testnet Coins

https://tvtc.blkidx.org/faucet/
I've included some documentation on LIT I created which includes information I found to be useful: https://github.com/e-corp-sam-sepiol/vertnode/blob/mastedocs/lit.md
Please visit the mit-dci/lit github repository for the most up to date information on lit: https://github.com/mit-dci/lit

Vertnode | Automated Vertcoin Node Installation Script

https://github.com/e-corp-sam-sepiol/vertnode

Recommended: Use Etcher to install the chosen OS to your microSD card / USB flash drive.

If you intend on installing Ubuntu Server 16.04 to your Intel NUC please use Etcher to install the .iso to your USB flash drive.
https://etcher.io/
PLEASE NOTE THIS SCRIPT MAY GIVE AN ERROR. THIS IS THE NATURE OF TESTING. PLEASE REPORT YOUR ERRORS IF YOU WANT THEM TO BE FIXED/RESOLVED. THANK YOU FOR BETTERING THE DEVELOPMENT OF THIS SCRIPT.

Ubuntu Server 16.04 Setup Details

You can use different clients to ssh into your node. One option is using PuTTY or Git Bash on Windows which is included in the desktop version of Git. If you are using Linux you can simply open a new terminal window and ssh to the IP address of your node (hardware you intend installing the Vertcoin node on).
You will need to know the IP address of your node, this can be found on your router page.
ssh 192.168.1.5 -l pi For example, this command uses ssh to login to 192.168.1.5 using the -l login name of pi. The IP address of your node will likely be different for you, in this example I am logging into a Raspberry Pi which has a default login name of pi.
A brief list of commands that can be used to check on the Vertcoin node status:
vertcoin-cli getblockchaininfo | Grab information about your blockchain
vertcoin-cli getblockcount | Grab the current count of blocks on your node
vertcoin-cli getconnectioncount | Grab the current count of connections to your node. A number of connections larger than 8 means that you have incoming connections to your node. The default settings are to make 8 outgoing connections. If you want incoming connections please port forward your Raspberry Pi in your Router settings page.
vertcoin-cli getpeerinfo | Grab the information about the peers you have connected to / are connected to
vertcoin-cli getnettotals | Grab network data, how much downloaded/upload displayed in bytes
tail -f ~/.vertcoin/debug.log | Output the latest lines in the Vertcoin debug.log to see verbose information about the Vertcoin daemon (ctrl+c to stop)
Thank you to all who have helped me and inspired me thus far, @b17z, @jamesl22, @vertcoinmarketingteam, @canen, @flakfired, @etang600, @BDF, @tucker178, @Xer0
This work is dedicated to the users of Vertcoin, thank you for making this possible.
7/20/2018 Thank you @CommodoreAmiga for the incredibly generous tip <3
You can reach me @Sam Sepiol#3396 on the Vertcoin Discord, here on reddit or @ [email protected]
submitted by ecorp-sam-sepiol to vertcoin [link] [comments]

DXCHAIN: big data meets blockchain (development progress)

Dxchain is world's first decentralized big data and machine learning network powered by a computing-centric blockchain.
Let's discuss it's development progress and project updates.
Dxchain is now an open source - debut of godx
You guys may be wondering “What’s Godx? What are the contents and features of the open-source code? What does open source really mean?”
What’s Godx? Godx is a blockchain project written by the DxChain team using Go. Currently, it supports 64-bit Linux and MacOS operating systems. It not only implements the common blockchain ledger system, but also implements a large-scale distributed storage system. Compared to traditional storage service providers, Godx is based on the blockchain tech that can provide users with more transparent, secure and efficient distributed storage services.
How can I access Godx open source? DxChain’s full open-source code for testing Network 3.0 is hosted on DxChain’s GitHub. Click this link to get the code: https://github.com/DxChainNetwork/Godx
Why open source? In the blockchain world, code is law, and it forms the community consensus on the blockchain. From now on, the DxChain Godx project is open source, which means that any engineer familiar with the go language can access the code through the provided link. This allows them to review its internal implementation logic, verify and modify the code, and compile their own executable file. It also means that no Trojan or backdoor virus can hide in the program to ensure that the project runs in a completely open and safe environment. The DxChain team is willing to work with community members to maintain this code-based law and build a healthy developer ecosystem.
Currently, DxChain uses GitHub as a platform for all code development and management. Starting today, the code modification and upgrade of all subsequent DxChain project developments will be carried out in a completely open and transparent environment. We welcome the supervision and inspection of team members from the global community. We will use actions to prove that DxChain is serious about its open-source code. I hope that every technology enthusiast can provide us with more valuable suggestions in order to improve our decentralized storage ecosystem!
What’s inside the Godx open source code? The Godx project is written in Go language and contains 1,706 go language source files, totaling 738,531 lines of code, which was developed by 8 main engineers. (For detailed indicators, please refer to GitHub statistics: https://github.com/DxChainNetwork/Godx/pulse The main module of the program includes general blockchain templates such as account, consensus, core, miner, p2p, rpc and evm, in addition to storage contract modules such as a storage client for storageclient and storagehost.
The high-quality code isn’t the only thing that makes this project outstanding. We believe that a clear and detailed document is equally as important in order to get developers started. The DxChain team provides community developers with detailed development updates and usage documentation. Throughout the project, use the tutorial found in the README.md document (https://github.com/DxChainNetwork/Godx). Developers can easily configure and install Godx code and experience DxChain storage and mining functions.
What are the features of the Godx project? The DxChain team has always been committed to using blockchain technology to provide solutions for data storage and computing problems. We will elaborate on the various futuristic tech innovations used in the project and bring you a taste of the future. This article will briefly introduce the following three aspects: EVM smart contracts, lightning network storage protocol and fast verification algorithm.
Compatibility with EVM Virtual Machine In the smart contract solution, the Ether-compatible virtual machine has 3 unique advantages. It is Turing complete, has DAPP development based on smart contracts, and its EVM platform is situated in the mainstream. The DxChain team has expanded ethereum’s original EVM and added a storage contract function while still being compatible with the original virtual machine commands. Therefore, developers can use both EVM and storage contract functions. The original Ethereum DAPP developers can directly compile the source code of their APP into Godx with almost no modification, which greatly reduces the development cost for the majority of developers.
Lightning Network Storage Protocol Since its launch, Lightning Network had the expectation to improve bitcoin transaction speed and scalability. In the algorithm of the offline file contract, the DxChain team also adopted a protocol similar to the lightning network channel. We call it the storage protocol. The storage protocol allows two parties who store the same file in the main chain to sign the contract, carry out the pledge fund and follow up on many detailed activities (such as uploading/downloading files) that can be implemented offline until the funds are settled by both parties. This means that even if there are huge files in the network that need to be stored, it can be quickly completed, without affecting the main chain, greatly improving storage performance and throughput efficiency.
Compatibility with EVM Virtual Machine In the smart contract solution, the Ether-compatible virtual machine has 3 unique advantages. It is Turing complete, has DAPP development based on smart contracts, and its EVM platform is situated in the mainstream. The DxChain team has expanded ethereum’s original EVM and added a storage contract function while still being compatible with the original virtual machine commands. Therefore, developers can use both EVM and storage contract functions. The original Ethereum DAPP developers can directly compile the source code of their APP into Godx with almost no modification, which greatly reduces the development cost for the majority of developers.
Zero-second file storage verification algorithm Through the specially designed Merkle Tree algorithm, the DxChain team implemented a zero-second network-wide method based on file storage verification. Compared to other algorithms, this algorithm saves necessary network interaction time, so that the acceptance speed of large files can be kept within milliseconds. Through this verification algorithm, all file storage will be efficiently verified by the entire network, in order to eradicate hackers.
The DxChain project is unique because of the achievements and improvements made by our team of talented engineers. In the future, we aim to release a series of analytical articles to provide an in-depth explanation of DxChain’s open-source code. Please stay tuned!
Conclusion Finally, the DxChain team would like to thank all of the supporters who accompanied us. Godx Open Source showcased the transformation of DxChain from being a team leading project to one that is driven by the community.
Everyone is welcome to provide us with valuable comments or suggestions by reporting an issue on GitHub. Every bug report and algorithm proposal will help DxChain’s development. We look forward to developing with DxChain's global community in the future, building a win-win, healthy developer ecosystem with continuous technological innovation, and leaving a permanent mark on the blockchain world.
Please share your views and suggestions Here is the website link: https://www.dxchain.com/
submitted by TechnicalChaudhary to cloudstorage [link] [comments]

Keychain Accelerates Enterprise Blockchain Adoption with Bitcoin Data Security and Identity Layer

FYI
http://www.keychain.io/2019/09/04/1685/
Uses the Bitcoin blockchain as a public key infrastructure to secure off-chain data.
Capabilities:
Features:
Targeted sectors:
submitted by recursivesalt to u/recursivesalt [link] [comments]

Dogecoin Core 1.7.0 released - Check in here for all info you need

Hi shibes!
The Dogecoin developers are proud to announce the final version of Dogecoin Core 1.7! After lots of coding, testing and swearing this is the next version of our reference client. It brings Dogecoin one big step forward on the technical side of things, with moving to the Bitcoin 0.9 codebase.
The full release notes are available here: https://github.com/dogecoin/dogecoin/releases/tag/v1.7.0
TL;DR of the release notes
Is this mandatory? No, you can stay on 1.6 if you want for now. This update adds quite a few new features you'd miss out on.
How to update?
  1. Backup your wallet! This is very important! Go to File -> Backup Wallet, and save this file in at least two safe places for a good backup.
  2. Exit the client you're running now.
  3. Install the update
    1. For Windows, use the setup.exe to update. If you are using the new 64bit version you'll need to uninstall 1.6 afterwards.
    2. For Mac just overwrite the version you currently have in you Applications folder.
    3. For Linux you'd overwrite your current dogecoin-qt binary with the new one.
  4. Start the client. That's it :)
About going back to 1.6 Once you go to 1.7 there is no easy way back to 1.6. That's why it's important to have a backup of your wallet. Just in case. Be aware that a backup goes out of date after 100 transactions! Several people have been running 1.7 for a while now and see no problem with it, so you probably don't want to go back anyway ;)
Downloads (Listing here this time to make it easier to find)
Changes from RC1
Staying up to date If you want to easily stay up to date with releases, you can subscribe to the mailing list right here: http://sourceforge.net/p/dogecoin/mailman/dogecoin-releases/ That's especially advised if you are a service provider!
General comments For anyone running an exchange, please also note that in light of the 51% attack against Reddcoin last night, the Dogecoin developers now recommend a minimum of 10 confirmations for payments into an exchange.
Thanks Thanks to everyone who contributed so far! Especially leofidus-ger, rnicoll and patricklodder, who have done by far the most of the work for this release. But of course thanks to everyone else who contributed, may it be advice or code or whatever. Also thanks to the Bitcoin developers. And of course thanks to the Dogecoin community! You are what makes it fun to work on all this ;)
submitted by langer_hans to dogecoin [link] [comments]

Dogecoin on Linux - The Complete Beginner's Guide

I'm writing this because I couldn't find a single condensed guide on compiling the wallet and running mining software on linux, specficially Ubuntu/Linux Mint. I combed Bitcoin and Litecoin forums for similar problems I was running into and eventually got everything nailed down, so here it is in one place, for new Shibes.
If you want to make a Dogecoin directory in your downloads folder to keep things organized, you will need to modify these commands to refelct the change. So instead of going to ~/Downloads/ you will need to go to ~/Downloads/Dogecoin and be sure to put the zipped files there when you download them, but the commands will be the same otherwise.
cwayne18 put in the work to make a PPA for the QT client here.
Ubunutu/Mint/Debian users should be able to install the client with the following commands:
sudo add-apt-repository ppa:cwayne18/doge sudo apt-get update && sudo apt-get install dogecoin-qt 
To update using this method, run
sudo apt-get update && sudo apt-get upgrade dogecoin-qt 
Compiling the Wallet Manually
I suggest using the PPA above, but if you want to compile manually, here you go.
1)Download the newest source from here. If you want to check out the Github page, click here
2)Unzip the package with the native client OR, navigate to your downloads and unzip
cd ~/Downloads unzip dogecoin-master.zip 
3)Now it's time to compile. You will need to install the dependencies, just copy and paste the following code. It will be a fairly large download and could take some time. It is always important to update before installing any new software, so we'll do that first and then install the dependencies.
sudo apt-get update sudo apt-get upgrade sudo apt-get install libssl-dev libdb-dev libdb++-dev libqrencode-dev qt4-qmake libqtgui4 libqt4-dev sudo apt-get install libminiupnpc-dev libminiupnpc8 libboost-all-dev build-essential git libboost1.53-all-dev 
4)Once that is done, go to the doge-coin master directory and compile:
cd ~/Downloads/dogecoin-maste sed -i 's/-mgw46-mt-sd-1_53//g' dogecoin-qt.pro qmake USE_UPNP=- USE_QRCODE=0 USE_IPV6=0 make -j3 
After running the qmake command you will likely see some text similar to
Project MESSAGE: Building without UPNP support Project MESSAGE: Building with UPNP supportRemoved plural forms as the target language has less forms. If this sounds wrong, possibly the target language is not set or recognized. 
It's perfectly normal, so don't worry about that.
Your Dogewallet is ready to go! The executable is in ~/Downloads/dogecoin-maste and called dogecoin-qt. Your wallet information is in ~/.dogecoin. You can run the wallet at any time by opening terminal and typing
cd ~/Downloads/dogecoin-maste ./dogecoin-qt 
Future upgrades to dogewallet are easy. Back up your wallet.dat, and simply follow the same directions above, but you'll be unzipping and building the newer version. You will likely need to rename the old dogecoin-master directory in ~/Downloads before unzipping the newest version and building. Also, it is likely that you will not need to install the dependencies again.
Alternate Method For Installing Dogecoin Wallet from Nicebreakfast
After installing the dependencies listed in step 3, open terminal, then navigate to where you want Dogecoin Wallet stored and run:
git clone https://github.com/dogecoin/dogecoin ./autogen.sh ./configure make 
then when the wallet is updated just run
git pull 
from the dogecoin directory.
GPU Mining
GPU mining requires CGminer. My suggestion is to get the executable already built. The creator of cgminer has removed the built file from his website, but I've uploaded it here
sudo apt-get install pkg-config opencl-dev libcurl4-openssl-dev autoconf libtool automake m4 ncurses-dev cd ~/Downloads tar -xvf cgminer-3.7.2-x86_64-built.tar.bz2 
Don't use anything newer than 3.7.2. The newer versions of CGMiner don't support GPU mining.
That's it! You have cgminer ready to go! You will run cgminer with the following syntax
cd ~/Downloads/cgminer-3.7.2-x86_64-built/ ./cgminer --scrypt -o stratum+tcp://SERVERNAME:PORT -u WORKER.ID -p PASS 
A good guide for fine tuning cgminer can be found here; follow the litecoin example.
EDIT
I had trouble getting cgminer running with a single line command, but running it via an executable .sh file works. This is covered in the cgminer setup guide I posted above but I'll put it here too. In the same directory that has the cgminer executable, you need to make a file called cgminer.sh and make it executable. It should contain the follwing:
export GPU_USE_SYNC_OBJECTS=1 export GPU_MAX_ALLOC_PERCENT=100 export DISPLAY=:0 find *.bin -delete sleep 5 ./cgminer 
Then you can call cgminer in terminal by doing ./cgminer.sh You will need a cgminer.conf file containing all your options. All of this is covered in the guide that is linked above.
A quick note about AMD drivers: They used to be a huge PITA to install and get working, but the newest Catalyst drivers are great. There's a GUI installer, everything works out of the box, and there is a lot of documentation. You can download them here: AMD Catalyst 14.6 Beta Linux
CPU Mining
For CPU mining I use minerd because it doesn't require any work to get running, simply download it and get to work. Download the built file for your machine 32-bit or 64-bit, and then unzip it and you're ready to go!
cd ~/Downloads tar -xvf pooler-cpuminer-2.3.2-linux-x86.tar.gz 
The executable is called minerd and it will be in ~/Downloads but you can move it to wherever you like. To run it, pull up terminal and do
cd ~/Downloads minerd --url=stratum+tcp://SERVER:PORT --userpass=USERNAME.WORKERNAME:WORKERPASSWORD 
You're done! Happy mining!
Common Issues
I ran into this and I've seen others with this problem as well. Everything installs fine but there is a shared library file that isn't where it should be. In fact, it isn't there at all.
 libudev.so.1: cannot open shared object file: No such file or directory 
In terminal, do
sudo updatedb locate libudev.so.0.13.0 
And it will probably return a path /lib/x86_64-linux-gnu. Inside that directory there's a library file called libudev.so.0.13.0. You'll need to make a symlink (aka shortcut) that links libudev.so.1 to libudev.so.0.13.0 So, assuming you're working with libudev.so.0.13.0 do this
cd /lib/x86_64-linux-gnu sudo ln -s libudev.so.0.13.0 libudev.so.1 
Now if you do
ln -l 
You should see
libudev.so.1 -> ./libudev.so.0.13.0 
Meaning you've made the symlink. Also, the text for libudev.so.1 will be blue.
submitted by Boozybrain to dogecoin [link] [comments]

By request: How to signal UASF, a guide for dummies

Request source

Forward

There are two methods of 'signaling UASF'.
  1. Add a uacomment to your bitcoin.conf file / launch arguments
  2. Run a UASF enforcing fork of bitcoin core software.
Option 1 is the equivilant to the guy that says "Yea! I love that Hillary gal. She's got bitchin tits!" and then doesn't go to vote come election day. Option 2 is the person who goes to vote on election day and casts a valid ballot for all elections valid that day. This guide assumes that you want to do option 2 because option 1 is more or less pointless.
It is worth noting, you will NOT need to re-download the blockchain when you switch from the Core client to the UASF client.
Also, I am going to assume the 'dummies' are all using Windows. If you'd like me to expand to linux as well, let me know...I just don't imagine there are many (any?) dummies on linux.

Guide

  1. Go to https://uasf.bitcoinreminder.com/ reference
  2. Download the correct version for your operating system (32-bit will work on 64-bit windows; 64-bit will NOT work on 32-bit windows. When in doubt, just get 32-bit. If you're on linux, you probably already know which 'bit' your OS is...if not...God help you.) I will assume you downloaded the file to C:\Users\\Downloads
  3. Click on the Start button
  4. type 'cmd' (no quotes)
  5. cd Downloads
  6. certUtil -hashfile bitcoin-0.14.1-bip148_segwit0.3-win32-setup-unsigned.exe SHA256
  7. Compare the output to this and this.
  8. If the hashes match, install the software. See (Hash verification explained) section below if you are unsure what/how to do that.
  9. Start your node. Congrats, so long as it is running, you are supporting UASF!
Obviously, if you go with the .zip version instead of the .exe, use the correct corresponding hash value in the file of hashes I linked to. Same if you use the 64-bit version instead of the 32bit version.

Hash verification explained

Since step 7 might be a bit confusing, here is what I got on my system:
C:\Users\Kingdud\Downloads>certUtil -hashfile bitcoin-0.14.1-bip148_segwit0.3-win32-setup-unsigned.exe SHA256 SHA256 hash of file bitcoin-0.14.1-bip148_segwit0.3-win32-setup-unsigned.exe: fc 28 b3 6f f7 51 09 f0 6e 3d 14 9f 45 2f da 21 3e c4 0c 37 83 d8 27 3a 6b ee b2 24 89 61 1c a9 CertUtil: -hashfile command completed successfully. 
Well, from the two links I know I should get:
*from luke-jr* fc28b36ff75109f06e3d149f452fda213ec40c3783d8273a6beeb22489611ca9 bitcoin-0.14.1-win32-setup-unsigned.exe *from laanwj* fc28b36ff75109f06e3d149f452fda213ec40c3783d8273a6beeb22489611ca9 bitcoin-0.14.1-win32-setup-unsigned.exe 
And, when you take out the spaces, what I actually got was:
fc28b36ff75109f06e3d149f452fda213ec40c3783d8273a6beeb22489611ca9
The bit at the end (bitcoin-0.14.1-win32-setup-unsigned.exe) is just the filename to tell you which file that hash corresponds to, so the fact that I got the same hash as both luke-jr and laanwj got means I have a 'safe' build (one that is not corrupted/tampered with/otherwise 'wrong').

Final Words

It's that simple. Cheers.
submitted by Kingdud to Bitcoin [link] [comments]

Groestlcoin Christmas Release!

Groestlcoin Dec 2018 Christmas Release Update

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

Recap:

What’s New Today?

Groestlcoin on Trezor Model T

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

Blockbook MainNet & TestNet Block Explorer

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

Features:

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

Edge Wallet

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

Features:

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

CoinID Wallet

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

Features

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

Groestlcoin Sentinel - Windows Released

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

Groestlcoin BIP39 Tool 0.3.9 Update

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

Electrum-GRS 3.2.3 Update

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

Electrum + Android Version 3.2.3:

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

Groestlcoin ivendPay Integration

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

Dear Bitcoin CORE devs the Windows client is a mess.

I would firstly like to apologise for ranting, I appreciate the work you are doing and have had little to no complaints with it priorly, but the situation seems quite dire. I suspect most if not all of you are running linux and little attention being paid on the windows client. With ~2% of desktop computers in the world running linux this is hardly optimal. I have been attempting to get a fresh installation of Bitcoin core to open and load the blockchain for three weeks now, the closest I have gotten is ~40 weeks behind. I am not a new user, I have been running a full node since late 2011, mined for three glorious years, and run a bitcoin e-commerce for nearly as long. Once I get core to finally open I will be transferring my coins out and swapping to a more lightweight client, because I cannot be bothered anymore. I'll return to running a full node once/if someone manages to convince me that theres a working build available.
Technical info: Running Windows 7 with the latest updates, Bitcoin Core 0.11.0 (64-bit) (this was the latest stable build when I began) on Intel i7-2600K at stock clocks, with 8Gb of ram.
The issues I have encountered thus far are:
Crashes on startup, pretty random and hard to describe, for example yesterday the fift attempt to start succeeded. There propably should be a "send crash report" button to hit when windows notifies me that bitcoin core has crashed.
Failures to shutdown neatly when windows restarts the computer upon installing updates. I get to start all over with the blockchain indexing. Surely there must be a way to get it to shut down neatly when Windows reboots ?
Losing all connections to the network, without having any issues with my internet connection. Had an especially hard time getting the program to restart after closing it on this instance.
Other info: I have 8 connections to the network, ample bandwith and haddrive space, ram usage is never above 70%.
Thank you for your time.
[Edit spelling]
submitted by Isokivi to Bitcoin [link] [comments]

Dogecoin 1.7 Alpha 1 - Such test. Wow. Much feedback pls.

Hi shibes!
"OMG will this hardfork???" No, would you let me explain first?
So, the development team has been hard at work to bring you an awesome new update for the Dogecoin wallet! And today marks the release of the first public test version.
The release notes are available here: https://github.com/dogecoin/dogecoin/blob/1.7-dev/RELEASE_NOTES_1_7_alpha.md
TL;DR of the release notes
Now that this is said, we come to the action! We've been testing the client for a while now and it looks solid so far. Now it's your turn to test it! We want you to try it out, send/receive transactions, explore new features, even break it! We want your feedback. Please use this post to share your findings. We appreciate every bug report!
Download You will find everything you need here: https://github.com/dogecoin/dogecoin/releases/tag/v1.7.0-Alpha-1
For Windows: Dogecoin-Qt for both 32 and 64 bit systems. For Linux: Dogecoin-Qt, dogecoind and dogecoin-cli for both 32 and 64 bit.
IMPORTANT There is also a dogecoin.conf file. You need to place it in your data directory to get connections! Default directory on Windows: C:\Users\USERNAME\AppData\Roaming\Dogecoin\ Default directory on Linux: ~/.dogecoin/
Testnet faucet As stated in release notes, you can get TestDoges here: http://testdoge.lionservers.de/ See this comment on how to get an address, URL or QR code which you can use and share :)
Mining? You can mine there, yes. But please only CPU mine. With the low hashrate of the testnet you'd be 99%-attacking the testnet with a single GPU ;)
Thanks Thanks to everyone who contributed so far! Especially leofidus-ger and rnicoll, who have done by far the most of the work for this release. But of course thanks to everyone else who contributed, may it be advice or code or whatever. Also thanks to the Bitcoin developers. And of course thanks to the Dogecoin community! You are what makes it fun to work on all this ;)
"When will it be out?" 1.7 is an extensive re-write, and as such needs a lot of testing. We're hoping to have it out shortly after next halvening, with a beta release for the adventurous closer to the time.
Mac pls? A Mac version will follow later :)
submitted by langer_hans to dogecoin [link] [comments]

Groestlcoin Release September 2018

Introduction

As always, the past 3 months since 22nd June have been crazy busy. The bears might still be around, but the show must go on and of course has not slowed the Groestlcoin development team in the slightest. Here’s a quick overview of what has already happened since the last release: - Integrated into the bitbns exchange, with the ability to buy Groestlcoin directly with the Indian Rupee. - Groestlcoin Rebrand Vote – Whilst there was much talk and push for a rebrand vote, the overall result was almost unanimously in favour of keeping our unique and conversation-starting name. With just 83 votes to Rebrand, and 2577 votes to No Rebrand. Thank you for all who voted, the funds raised are being used to fund ongoing hosting and development costs. - Integrated into the Cryptobridge exchange. Cryptobridge is a popular decentralised exchange where you always hold the private keys to your funds, only YOU have access to them. - Groestlcoin has been added to SimpleSwap – Groestlcoin can now be swapped with over 100 other cryptocurrencies, without signing up! - Groestlcoin has been added to UnoDax, one of the leading cryptocurrency exchanges in India, with TUSD, BTC and INR trading pairs. - Groestlcoin has been added to SwapLab.cc, where you can buy Groestlcoin using Bitcoin and over 50 other altcoins. Purchasing with VISA/Mastercard is coming VERY SOON. Discussed later: - Groestlcoin has been listed on #3 largest exchange in the world on volume, Huobi Global! More on this to come further on in the announcements. - Groestlcoin has been added to the Guarda Multi-Currency Wallet. - Groestlcoin has been added to Melis Multi-Device, Multi-Account, Multi-Platform, Multi-Signature advanced wallet! Already this list is far more than most other cryptocurrencies have achieved in the past 3 months. But this is just the tip of the iceberg of what has been developed.

What's been Happening?

GRSPay Released

We are so excited for this, that it has it's own separate reddit thread. Head over there now at https://www.reddit.com/groestlcoin/comments/9ikr5m/groestlcoin_releases_grspay/? to see more on this!
https://www.melis.io/assets/logo-navbar-4b6f0d372f15b2446d3fa4c68f346e4fb08ee113941186cee58fd6135f3f8b7d.svg

Melis Wallet

The the most advanced wallet for Bitcoin, Bitcoin Cash, Litecoin and now Groestlcoin.
With Melis you have the complete control of your bitcoins and private keys, you can define spending limits policies and make use of two or more factors authentication. Melis is open source, published on GitHub.

How Melis Works?

You can create as many accounts as you want. An account is a part of your wallet that can be customised to your requirements. You can choose how many co-signers are required to spend funds. The accounts are completely independent and act like separate wallets from each other but can be accessed via the same details. A core feature of Melis is the ability to set a ‘primary’ device. With this you can set an account as ‘Secure’ so it is only viewable (and accessible at all) from the Primary device. You can have a savings account hidden from the outside world whilst also having your ‘spending’ funds available on the go. With Melis you can create a multi-signature account between N people, where up to N signatures are required to sign a transaction, choosing if any of those should be mandatory.
Core Features:
https://guarda.co/assets/images/1PGo4ID.svg?1537791124643

Guarda Wallet

Safer than ever! Desktop Light Wallet - Anonymous and fast!
With Guarda Multi-currency Desktop Light Wallet you don’t need to register. Guarda has no access to your private keys or funds. You can receive, send, store, buy and exchange cryptocurrencies in complete anonymity and safety. All these features are available on Linux, Windows or MacOS. Choose the one that suits you!
More info about Guarda wallet on www.guarda.co
https://holytransaction.com/images/logo.png

Integrated into HolyTransaction

What is HolyTransaction?

HolyTransaction gives users access to the crypto world with a universal cryptocurrency wallet and instant exchange.

Features

For more information, visit Holy Transaction here.
https://www.groestlcoin.org/wp-content/uploads/2018/09/next-grs-groestlcoin.jpg

Integrated into NEXT Wallet

What is NEXT?

NEXT is a modern, next-generation stylish open-source Desktop wallet.

Features

For more information, visit NextWallet here.
https://blockchainfinancial.com/mediaserve2018/09/admin-06143647-bcf_logo_vec_256x256.png

Integrated into Blockchain Financial

What is Blockchain Financial?

Blockchain Financial is a set of web based services for individuals and companies that want to make things happen with the Cryptocurrencies Ecosystem. - For those that don't know anything about cryptocurrencies, we offer tools that will let them receive, send and operate with an assortment of coins. - For those that are already riding the wave, we offer tools that will let them do all those things that they weren't able to do.

Blockchain Financials mission

We're not here to reinvent the wheel. We're here to make it run smoother for you, and we provide some of the most useful services you'll find on the internet, made in a way that is easy to understand and use on a daily basis. In short, we're a bunch of people that claim to be Crypto Evangelists. We strongly believe in cryptocurrencies, and our main promise is to push them up so more people get involved and take all the advantages they offer.

More information from Blockchain Financial

Back in 2014, the world was taken by storm when Facebook approved the first cryptocurrencies tipping apps. The first was for Dogecoin, and the second was for multiple coins.
The project was hosted on whitepuma.net, and persisted for almost two years, built up a massive user community and gave a home to Bitcoin, Litecoin, Dogecoin and dozens of other bitcoin-based altcoins.
After very active months, the tipping hype started to fade away. Then, the developers decided to jump into the next stage: bringing not only tipping, but also mining and a widget that could be embedded on websites to allow everyone to accept payments. Sadly, the work was never completed because the project started to require an unsustainable amount of resources. Then, in a painful decision, a shutdown was announced by December 2015.
A couple of months after whitepuma.net was closed, the source code was released by its creator as Open Source on GitHub. But it wasn't maintained.
Now, some of the original members of the dev and admin teams gathered up with a handful of the WhitePuma's elite users, and decided to make something good with the best pieces of the old source code. That, with fresh new ideas and the power of the BardCanvas engine, synthesized the core of Blockchain Financial.
More info about Blockchain Financial wallet on .
For more information, visit [Blockchain Financial](www.blockchainfinancial.com)
https://www.huobi.com/image/logo.aeb4723.svg

Groestlcoin Listed on Huobi

Who are Huobi?

Huobi was founded in China and is now based in Singapore, with offices in Hong Kong, South Korea, Japan and the North America, currently sitting #3 in volume on Coinmarketcap. Huobi is a great leap forward for our growing presence in Asia and we are very excited to be listed here!
You can find the official Huobi announcement here.

Groestlcoin Core v2.16.3 - Please Update ASAP

A new major Groestlcoin Core version 2.16.3 is now available for download which includes both a Denial of Service component and a critical inflation vulnerability, so it is recommended to upgrade to it if you are running a full Groestlcoin node or a local Groestlcoin Core wallet.
v2.16.3 is now the official release version of Groestlcoin Core. This is a new major version release with a very important security updates. It is recommended to upgrade to this version as soon as possible. Please stop running versions of Groestlcoin Core affected by CVE-2018-17144 ASAP: These are 2.13.3 and 2.16.0.
As a result in this, all exchanges and services have been asked to upgrade to this version, so please be patient if wallets go in to maintenance mode on these services.

What's new in version v2.16.3?

This is a major release of Groestlcoin Core fixing a Denial of Service component and a critical inflation vulnerability (https://nvd.nist.gov/vuln/detail/CVE-2018-17144) exploitable by miners that has been discovered in Groestlcoin Core version 2.13.3 and 2.16.0. It is recommended to upgrade to 2.16.3 as soon as possible. If you only occasionally run Groestlcoin Core, then it's not necessary to run out and upgrade it right this second. However, you should upgrade it before you next run it. If you know anyone who is running an older version, tell them to upgrade it ASAP. Stored funds are not at risk, and never were at risk. At this time we believe over half of the Groestlcoin hashrate has upgraded to patched nodes. We are unaware of any attempts to exploit this vulnerability. However, it still remains critical that affected users upgrade and apply the latest patches to ensure no possibility of large reorganizations, mining of invalid blocks, or acceptance of invalid transactions occurs.

The Technicals

In Groestlcoin Core 2.13.3, an optimization was added (Bitcoin Core PR #9049) which avoided a costly check during initial pre-relay block validation that multiple inputs within a single transaction did not spend the same input twice which was added in 2012 (Bitcoin Core PR #443). While the UTXO-updating logic has sufficient knowledge to check that such a condition is not violated in 2.13.3 it only did so in a sanity check assertion and not with full error handling (it did, however, fully handle this case twice in prior to 2.1.0.6). Thus, in Groestlcoin Core 2.13.3, any attempts to double-spend a transaction output within a single transaction inside of a block will result in an assertion failure and a crash, as was originally reported. In Groestlcoin Core 2.16.0, as a part of a larger redesign to simplify unspent transaction output tracking and correct a resource exhaustion attack the assertion was changed subtly. Instead of asserting that the output being marked spent was previously unspent, it only asserts that it exists. Thus, in Groestlcoin Core 2.16.0, any attempts to double-spend a transaction output within a single transaction inside of a block where the output being spent was created in the same block, the same assertion failure will occur. However, if the output being double-spent was created in a previous block, an entry will still remain in the CCoin map with the DIRTY flag set and having been marked as spent, resulting in no such assertion. This could allow a miner to inflate the supply of Groestlcoin as they would be then able to claim the value being spent twice.
Groestlcoin would like to publicly thank Reddit user u/Awemany for finding CVE-2018-17144 and reporting it (https://lists.linuxfoundation.org/pipermail/bitcoin-core-dev/2018-Septembe000064.html). You deserve gratitude and appreciation from cryptoworld, and you have ours. If you want to support him for his work, please consider donating to him on his bitcoin cash address: bitcoincash:qr5yuq3q40u7mxwqz6xvamkfj8tg45wyus7fhqzug5
http://i.imgur.com/3YhyNZK.png

Groestlcoin Electrum-GRS 3.2.2 - Ledger & Trezor Edition

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

Changes:

http://i.imgur.com/3YhyNZK.png

Electrum-GRS Mobile Android

What is Electrum-GRS Mobile?

Electrum-grs is a lightweight "thin client" groestlcoin wallet Android based on a client-server protocol. Its main advantages over the original Groestlcoin client include support for multi-signature wallets and not requiring the download of the entire block chain.

Changes

Groestlcoin EasyVanity Released

Groestlcoin EasyVanity is a Windows app is built from the ground-up in C# and makes it easier than ever before to create your very own bespoke Groestlcoin address(es), even whilst not connected to the internet! You can even generate multiple keys with the same prefix and leave it on overnight whilst your CPU or GPU collects and stores these addresses locally.
If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then Groestlcoin EasyVanity is the right choice for you to create a more personalized address.

Features

• Ability to continue finding keys after first one is found • Includes warning on startup if connected to the internet • Ability to output keys to a text file (And shows button to open that directory) • Ability to make your match case sensitive (Where possible) • Show and hide the private key with a simple toggle switch, and copy the private key straight to your clipboard • Show full output of commands • Includes statistics whilst the application is running • Ability to choose between Processor (CPU) and Graphics Card (GPU) • Automatically detects 32 or 64 bit systems • Features both a Light and Dark Material Design inspired Themes • EasyVanity's search is probabilistic, and the amount of time required to find a given pattern depends on how complex the pattern is, the speed of your computer, and whether you get lucky. • EasyVanity includes components to perform address searching on your CPU (vanitygen) and your OpenCL-compatible GPU (oclvanitygen). Both can be built from source, and both are included in the Windows binary package. • Prefixes are exact strings that must appear at the beginning of the address. When searching for prefixes, Easyvanity will ensure that the prefix is possible, and will provide a difficulty estimate. • The percentage displayed just shows how probable it is that a match would be found in the session so far. If it finds your address with 5% on the display, you are extremely lucky. If it finds your address with 92% on the display, you are unlucky. If you stop EasyVanity with 90% on the display, restart it, and it finds your address with 2% on the display, your first session was unlucky, but your second session was lucky. • EasyVanity uses the OpenSSL random number generator. This is the same RNG used by groestlcoin and a good number of HTTPS servers. It is regarded as well-scrutinized. Guessing the private key of an address found by EasyVanity will be no easier than guessing a private key created by groestlcoin itself. • To speed up address generation, EasyVanity uses the RNG to choose a private key, and literally increments the private key in a loop searching for a match. As long as the starting point is not disclosed, if a match is found, the private key will not be any easier to guess than if every private key tested were taken from the RNG. EasyVanity will also reload the private key from the RNG after 10,000,000 unsuccessful searches (100M for oclvanitygen), or when a match is found and multiple patterns are being searched for. • Free software - MIT. Anyone can audit the code. • Written in C# - The code is short, and easy to review.

Groestlcoin Sentinel (Android & Blackberry) – Mainnet + Testnet

What is Sentinel?

Groestlcoin Sentinel is the easiest and fastest way to track/receive/watch payments in your offline Groestlcoin Wallets. Groestlcoin Sentinel is compatible with any standard Groestlcoin address, BIP44 XPUB (Extended Public Key) BIP49 YPUB and BIP84 ZPUB
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 particular wallet.

What's New?

The P2SH paperwallet supports creating P2SH paperwallets in bulk, keypair generation with QR codes and sweeping tool. Groestlcoin believes strongly in privacy, the live version does not collect and store IP or transaction data.
Changes
Features
The BECH32 paperwallet supports creating BECH32 paperwallets in bulk, keypair generation with QR codes and sweeping tool. Groestlcoin believes strongly in privacy, the live version does not collect and store IP or transaction data.
Features
![WebWallet](https://i.imgur.com/Z2oj7bj.png)

Groestlcoin Web Wallet Update 1.4

What is Groestlcoin Web Wallet?
Groestlcoin Webwallet is an open source, multisignature, HD Wallet and more! Webwallet is a a open source browser based Groestlcoin webwallet.
Webwallet is a playground for Groestlcoin in javascript to experiment with. It supports multisig, OP_HODL, RBF and many more. Groestlcoin believes strongly in privacy, the live version does not collect and store IP or transaction data.
Changes:
submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

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