Unconfirmed Bitcoin Transactions: Why They Happen, and ...

Instacoin UK - Last Chance (up to end of Oct) to get a free £10 worth of Bitcoin (same day) for £100 Bitcoin purchase

Instacoin UK , a popular cryptocurrency exchange, are updating their referral scheme from 1st November 2020. The referral amount will be adjusted to a £5 bonus for any purchase over £50. Currently it is a £10 bonus for any purchase of £100 or over.
Instacoin UK is a website which allows you to purchase Bitcoin with your Visa / MasterCard or via a bank transfer. They have been around a while used by lots of beermoneyuk users already.
Instacoin UK are going to honor the £10 bonus scheme for any new customer signing that sign up and purchase £100 of Bitcoin or over until the end of the month. You get the free £10 worth of Bitcoin immediately after purchase! The whole process (including receiving your £100 back in your bank account) should take less than an hour.
The Process
Sign up via my referral link.
Referral link: https://instacoin.uk/ref?code=54C9787
£10 bonus
Non-refferal link: https://instacoin.uk/
No bonus

Steps:

  1. Sign up with the referral link above
  2. Verify your account (driver's licence, passport or gov issued I.D)
  3. Click buy at the top of the dashboard and select BTC, with a purchase amount of £100
  4. Enter the Bitcoin wallet address you want the money paying to.
  5. Pay using by Visa / MasterCard or bank transfer.
  6. You're done! The £100 of BTC will reach your bitcoin wallet usually within 15 minutes or so.
  7. The £10 bonus you receive in the form of a code in your email after the £100 of BTC is sent. Click the email link, enter the code, provide your wallet address again and you'll receive your £10 of BTC for free :)

Once the £110 worth of Bitcoin is in your wallet you are free to do whatever you want with it. I sent mine to my BlockFi account for savings.
You can also get an additional £10 reward for every person you refer up to the end of the month, after this it is £5! Any referral bonuses are given to you at the end of the month).
Let me know if you have any questions.

UPDATE 24.10.20: There is some confusion about the referral amount as being £5 or £10. InstaCoin UK have confirmed That is you sign up with an exsisting customers link (like mine), and complete a £100 purchase before the end of October, you will receive £10 in free Bitcoin credited to your account.
My Referral link for the free £10: https://instacoin.uk/ref?code=54C9787
UPDATE 28.10.20:
Here is a copy of the email I have just received from InstaCoin. I can verify that the mempool is super busy at the moment:

We have received a number of support tickets regarding the delay in BTC confirmations. Rather than reply to everyone individually we would like to address this issue as a whole and give a quick explanation to all our users about why this is occuring:
Sometimes, for a variety of reasons, there will be a spike in the number of BTC transactions that are waiting to be confirmed. That will cause a delay in confirmation times, and increases the price of fees required for a transaction to be included in a block. You can see the current number of unconfirmed transactions here: https://www.blockchain.com/charts/mempool-count?timespan=1week.
Transaction fees directly influence how long you will have to wait for transactions to confirm. At InstaCoin, we broadcast all our transactions with a Regular fee. This fee is covered on our side. It is usually around 0.0001 BTC or £1. Up until the last few days, there has never been an issue with confirmation times.
With a high priority fee, it is likely that transactions will get confirmed quicker by miners. Currently, we are looking at a 0.001BTC/£10 fee to push through transactions at a normal rate. As you can imagine, this is not an expense InstaCoin can cover and we also believe our users would not want to pay this fee either.
We believe the best solution is the one we are currently employing. The delays are frustrating and we feel that frustration too but the current mempool (waiting room) is unprecedented and we will return back to normal ways soon.
The important takeaway we want our users to have from this is that, from our side, the BTC is sent out instantly to your wallet and usually this would get confirmed in a short space of time. At this moment things are taking a bit longer, but the end-point is that you will 100% receive this BTC eventually.

Also remember to complete your sign up and deposist before the end of the month to be certain of getting the free £10 in Bitcoin.
My sign up link again is: https://instacoin.uk/ref?code=54C9787
Sign up code: 54C9787
If you have any questions just let me know.
submitted by TidyCompetition to beermoneyuk [link] [comments]

the year 2020 in Bitcoin Cash so far: a detailed history

the year 2020 in Bitcoin Cash so far: a detailed history
What follows at the bottom is a four page long chronological overview of what happened in BCH in 2020 so far. To make it more digestable and fun to read I start with my narrating of the story.
My attempt was to remain as objective as possible and "let the facts speak for themselve" with everything sourced. I also link to many read.cash articles, the decision of which are the important ones to include is certainly not easy, I count on the rest of the community if I overlooked anything important.

summary & my narrating of the story:
The year started out relatively calm, with cashfusion in "the news" and an older ongoing controversy between Amaury and Roger Ver being worked out. Starting Jan 22nd all debate broke loose with the announcement of “Infrastructure Funding Plan for Bitcoin Cash” by Jiang Zhuoer of BTC.TOP. To illustrate this point 2 days later coinspice ran the title " Roger Ver Praises Vigorous Debate, [...]" and 6 days, less than a week, later Chris Pacia made a read.cash post titled "The 253rd "Thoughts on developer funding" Article" which might have been only a slight exaggeration or he might have been counting. Part of the reason of the tsunami was the lack of worked out details. By the time of Pacia's post a lot had changed: Both BU, Bitcoin Verde and a group of miners had made announcements not to go along with "the plan".
On feb 1st, the second version of the IFP was announced by Jiang Zhuoer in a post “BCH miner donation plan update”. Two weeks later on Feb 15th, the third iteration was announced by Bitcoin ABC which was to be activated by hashrate voting and on the same day Flipstarter was introduced, a sign of the search for alternative solutions. After a few more days and a few more people coming out more against the IFP (including Jonald Fyookball, Mark Lundeberg & Josh Ellithorpe), BCHN was announced on feb 20th with a formal release a week later. Also feb 27th, the DAA was brought back into the conversation by Jonathan Toomim with his " The BCH difficulty adjustment algorithm is broken. Here's how to fix it." video. By early march the IFP was effectively dead with its author Jiang Zhuoer vowing to vote against it. This became clear to everyone when ABC, a day later sudddenly shifted gears towards non-protocol, donation based funding: the IFP was dead. End march ABCs 2020 Business Plan was announced as a way to raise $3.3 million. Mid april to mid may was the high time for voluntary funding with four node implementations and General Protocols, a BCH DeFi Startup successfully raising funds.
By May 15th, the 6th HF network upgrade things had pretty much cooled down. The upgraded included nothing controversial and even saw an unexpected doubling in the unconfirmed transaction chain. June 15th a month later things started to heat up again with the BCHN announcement to remove the "poison pill" or "automatic replay protection". 8th Jul Jonathan Toomim posted "BCH protocol upgrade proposal: Use ASERT as the new DAA" which promised the solution to the long dragging DAA problem. Jul 23th however an unexpected twist occurred when Amaury Séchet posted "Announcing the Grasberg DAA" an incompatible, alternative solution. This, again, sparked a ton of debate and discussion. Grasberg lasted just two weeks from Jul 23th to Aug 6th when ABC announced its plans for the november 2020 upgrade but it had successfully united the opposition in the meanwhile. ABCs plan for november included dropping grasberg in favour of aserti3–2d and introducing IFPv4. Now we're here August 8th, the IFP which was declared dead after just over a month (Jan 22-Mar 5) is now back in full force. The rest of the history is still being written but if p2p electronic cash is to succeed in any big regard it's very thinkable that these events will get into history books.

Important resources: coinspice IFP timeline & Compiled list of BCH Miner Dev Fund posts, articles, discussions

History
Jan 13th : “Do CoinJoins Really Require Equal Transaction Amounts for Privacy? Part One: CashFusion” article by BitcoinMagazine [source]
Jan 13th : “Clearing the Way for Cooperation” Read.cash article by Amaury Séchet [source] on the controversy with Roger Ver about the amount of donations over the years
Jan 22nd : “Infrastructure Funding Plan for Bitcoin Cash” IFPv1 announced by Jiang Zhuoer of BTC.TOP [source] IFPv1: 12.5% of BCH coinbase rewards which will last for 6 months through a Hong Kong-based corporation & to be activated on May 15th
Jan 22nd : ”Bitcoin Cash Developers React to Infrastructure Fund Announcement: Cautiously Optimistic” coinspice article including Amaury Séchet, Antony Zegers, Jonald Fyookball & Josh Ellithorpe [source]
Jan 23rd : Jiang Zhuoer reddit AMA [source] [coinspice article]
Jan 23rd : Vitalik weighs in with his take on twitter [source]
Jan 23rd :” On the infrastructure funding plan for Bitcoin Cash” article by Amaury Séchet [source] [coinspice article] in which he proposed to place control of the IFP key in his hands together with Jonald Fyookball and Antony Zegers. . A group of 7 to 12 miners, developers, and businessmen in total would get an advisory function.
Jan 24th : “Bitcoin.com's Clarifications on the Miner Development Fund“ which emphasizes, among other things, the temporary and reversible nature of the proposal [source] [coinspice article]
Jan 24th : “Little Known (But Important!) Facts About the Mining Plan” Read.cash article by Jonald Fyookball in which he defended the IFP and stressed its necessity and temporary nature.
Jan 25th : massive amounts of public debate as documented by coinspice [coinspice article] with Justin Bons, Tobias Ruck and Antony Zegers explaining their take on it.
Jan 26th : public debate continues: “Assessment and proposal re: the Bitcoin Cash infrastructure funding situation” Read.cash article by imaginary_username [source] which was noteworthy in part because the post earned over Earns $1,000+ in BCH [coinspice article] and “The Best Of Intentions: The Dev Tax Is Intended to Benefit Investors But Will Corrupt Us Instead” by Peter Rizun [source]
Jan 27th : “We are a group of miners opposing the BTC.TOP proposal, here's why” article on Read.cash [source] [reddit announcement]
Jan 27th : Bitcoin Unlimited's BUIP 143: Refuse the Coinbase Tax [source][reddit announcement]
Jan 28th : “Bitcoin Verde's Response to the Miner Sponsored Development Fund” read.cash article by Josh Green in which he explains “Bitcoin Verde will not be implementing any node validation that enforces new coinbase rules.” [source]
Jan 28th : “Update on Developer Funding” read.cash article from Bitcoin.com [source] in which they state “As it stands now, Bitcoin.com will not go through with supporting any plan unless there is more agreement in the ecosystem such that the risk of a chain split is negligible.” And that “any funding proposal must be temporary and reversible.” This announcement from bitcoin.com and their mining pool lead the anonymous opposition miners to stand down. [source]
Jan 28th : The 253rd "Thoughts on developer funding" Article – by Chris Pacia, to tackle the “serious misconceptions in the community about how software development works”. He ends on a note of support for the IFP because of lack of realistic alternatives. [source]
Feb 1st: “BCH miner donation plan update” IFPv2 announced by Jiang Zhuoer of BTC.TOP [source] Which changes the donation mechanism so miners directly send part of their coinbase to the projects they wants to donate to. It would be activated with hashrate voting over a 3-month period with a 2/3 in favour requirement. The proposal also introduces a pilot period and a no donation option, Jiang Zhuoer also says he regards 12.% as too much.
Feb 7th: Group of BCH miners led by AsicSeer voice scepticism about the IFP during a reddit AMA [source]
Feb 15th: “On the Miner Infrastructure Funding Plan” article by Bitcoin ABC [source] In which they announce they will implement IFPv3 in their upcoming 0.21.0 release. This version has amount reduced to 5% of block reward and will go in effect with BIP 9 hashratevoting and a whitelist with different projects.
Feb 15th : “Introducing Flipstarter” [source]
Feb 16th :” Bitcoin.com’s stance on the recent block reward diversion proposals” video by Roger Ver on the Bitcoin.com Official Channel. [source] > Ver called Zhuoer’s IFP “clever” but ultimately “problematic.” [coinspice article]
Feb 16th :” BCH miner donation plan update again” read.cash article by Jiang Zhuoer of BTC.TOP [source] In which he briefly outlines the details of IFPv3
Feb 17th : “Latest Thoughts On Infrastructure Mining Plan” post by Jonald Fyookball [source]
Feb 17th : “Regarding the Bitcoin Cash Infrastructure Funding Plan, I am certain now that it should be scrapped immediately.” tweet by Mark Lundeberg [source]
Feb 19th : “Thoughts on the IFP - A Dev Perspective“ read.cash article by Josh Ellithorpe [source]
Feb 20th : “Bitcoin Cash Node” post announcing the new node implementation [source]
Feb 20th : First “Bitcoin Cash Developer Meeting” After IFP Proposal [source]
Feb 24th : “Flipstarter 500k, 6 independent campaigns” post announcing the goal to “fund the BCH ecosystem with 6 independent campaigns and an overall 500,000 USD target” [source]
Feb 27th : BCHN Formally Released [source]
Feb 27th : “The BCH difficulty adjustment algorithm is broken. Here's how to fix it.” Video by Jonathan Toomim [source]
Mar 3th :” Bitcoin Cash Node 2020: plans for May upgrade and beyond” post by BCHN [source]
Mar 4th :”Author of the Bitcoin Cash IFP [Jiang Zhuoer] Vows to Vote Against It, Using Personal Hash in Opposition” [source]
Mar 5th :Bitcoin ABC announces their 2020 Business Plan Fundraising for later in march [source]
Mar 15th : “EatBCH campaign funded! Next: node campaigns.” campaign funded after 11 hours [source]
Mar 30th : Bitcoin ABC 2020 Business Plan [source] $3.3 Million Fundraiser [source]
Apr 17th : Five flipstarter node campaign launched. [source]
Apr 26th : BCHN flipstarter campaign successfully funded. [source]
Apr 27th : VERDE flipstarter campaign successfully funded. [source]
May 4th : KNUTH flipstarter campaign successfully funded. [source]
May 7th : “BCH DeFi Startup General Protocols Raises Over $1 mil“ [source]
May 8th : BCHD flipstarter campaign successfully funded. [source]
May 9th : Deadline for node campaigns, ABC flipstarter campaign not funded. [source]
May 14th : “With IFP Defeated, Bitcoin ABC, ViaBTC & CoinEX CEO Publicly Consider a Bitcoin Cash Foundation” [source]
May 15th : deadline for ABC fundraiser campaign, ends at 55% completed. [source]
May 15th : 6th HF network upgrade -> new opcode op_Reversebytes, increased of the chained transaction limit from 25 to 50, and the improved counting of signature operations using the new “Sigchecks” implementation [source] with the “Controversial Funding Plan Rejected by Miners” [source]
May 25th : “Announcing the SLP Foundation” [source]
Jun 15st : “BCHN lead maintainer report 2020-06-15” announcement to remove the Automatic Replay Protection (a.k.a. the Poison Pill) from BCHN in november [source]
Jun 16st : “So [BCHN] is going to fork off from BCH at the next upgrade. Same old story. […]” tweeted Vin Armani [source]
Jun 21st : “Why Automatic Replay Protection Exists” post by Shammah Chancellor [source]
Jul 7th : “The Popular Stablecoin Tether Is Now Circulating on the Bitcoin Cash Network” [source]
Jul 8th : “BCH protocol upgrade proposal: Use ASERT as the new DAA” post by Jonathan Toomim [source]
Jul 18th : “$6M Worth of Tether on the Bitcoin Cash Chain Highlights the Benefits of SLP Tokens” [source]
Jul 23th : “Announcing the Grasberg DAA” post by Amaury Séchet[source]
Jul 24th : “Thoughts on Grasberg DAA” post by Mark Lundeberg [source]
Jul 29th : CashFusion security audit has been completed [source]
Jul 31st : Electron Cash 4.1.0 release with CashFusion support [source]
4th year, august 2020 – 2021
Aug 1st : “Bitcoin Cash: Scaling the Globe“ Online conference for ForkDay Celebration [source]
Aug 2nd : >“Is there going to be a fork between ABC and BCHN?” > “IMO it is very likely. If not in November, then next May.” – Amaury Séchet
Aug 3rd : “Dark secrets of the Grasberg DAA” post by Jonathan Toomim [source]
Aug 3rd : “Joint Statement On aserti3-2d Algorithm“ post by General Protocols, including Cryptophyl, Read.cash, Software Verde & SpinBCH [source]
Aug 3rd : Knuth announces they will be implementing aserti3-2d as DAA for november. [source]
Aug 3rd : Amaury rage quit from the developer call [source]
Aug 4th : “But why do people care about compensating for historical drift? Seems like a tiny problem and if it's causing this much social discord it seems not even worth bothering to try to fix.” Tweet by Vitalik [source]
Aug 5th : “Bitcoin Cash (BCH) November 2020 Upgrade statement” signed by BCHD, electron cash, VERDE, BU members, BCHN developers, Jonathan Toomim, Mark B. Lundeberg and many others [source]
Aug 5th : “BCHN FAQ on November 2020 Bitcoin Cash network upgrade” [source]
Aug 6th : “Bitcoin ABC’s plan for the November 2020 upgrade” [source] the announcement that they will drop Grasberg in favour of aserti3–2d (ASERT) and will also include FPv4 in which 8% of the blockreward goes to ABC as development funding.
Aug 7th : “Joint Statement from BCH Miners regarding Bitcoin ABC and the November 2020 BCH Upgrade.” Read.cash article by asicseer [source] stating “Over recent months, most miners and pools have switched to BCHN, and presently operate a majority of BCH hashrate.”
Aug 7th : “Simple Ledger Protocol's Joint Statement Regarding Bitcoin ABC on BCH's November 2020 Upgrade” read.cash post by the SLP-Foundation [source]
submitted by Mr-Zwets to btc [link] [comments]

A few questions about blockchain

Hello blocktech!
I have a few questions about the blockchain, but I am having trouble finding information that is more than a basic overview of the blockchain. For the sake of simplicity, I am going to be referring only to the Bitcoin chain for these questions, as different chains may use different solutions.
Does every miner download the entire chain?
Given the number of transactions, it seems that this would require a lot of memory, and would increase in this respect over time.
If every miner has a copy, where did they get it?
Since there is no central server, who provides a new user with the chain? Wouldn't it take a lot of bandwidth for some random miner to send the entire chain to a new user?
Once they have the chain, how do they get updates?
Once a new block is mined, how does a person who didn't mine it get the update? Is it sent one person at a time from peer to peer?
How does a miner access the pool of unconfirmed transactions?
Again, once someone makes a transaction that is added to the pool, how do miners access the pool? How is it ensured that none of the transactions are left out of a block? If you and I both mine a block, you slightly before me, and someone makes a transaction in between, wouldn't their transaction get lost as new blocks were added on top of yours rather than mine?
If I mine a block, is my reward stored as a transaction in that block or the subsequent one?
Or is the block itself verification of the reward?
How do cryptocurrency wallets stay up to date?
If I am mining and housing a wallet on the same computer, and I mine a block shortly after someone else has beaten me to it, how is it ensured that my wallet doesn't reflect me having mined the block?
I will certainly have more questions after receiving some answers, so I appreciate anyone taking the time to explain this to me!
submitted by EricMeehan to CryptoTechnology [link] [comments]

Bitcoin transfer fees have risen to a two-year high

The bitcoin network still cannot return to normal after halving. On May 20, the average transaction fee level rose to $6.633, the highest level since June 2018. A month ago, before halving, the figure was 10 times lower.
The size of the mempool - the volume of unconfirmed transactions - increased to the values of the winter of 2018. On May 21, it was 94.41 Mb. Against this background, the cost of BTC dropped from $9,600 to $8,800. Now the average market price of bitcoin is $9,167, in 24 hrs the cryptocurrency has lost 2.10% in price.
On May 11, the block reward was halved in the Bitcoin network from 12.5 BTC to 6.25 BTC.
submitted by bestchange_pr to bestchange [link] [comments]

A Few Questions

Hello blocktech!
I have a few questions about the blockchain, but I am having trouble finding information that is more than a basic overview of the blockchain. For the sake of simplicity, I am going to be referring only to the Bitcoin chain for these questions, as different chains may use different solutions.
Does every miner download the entire chain?
Given the number of transactions, it seems that this would require a lot of memory, and would increase in this respect over time.
If every miner has a copy, where did they get it?
Since there is no central server, who provides a new user with the chain? Wouldn't it take a lot of bandwidth for some random miner to send the entire chain to a new user?
Once they have the chain, how do they get updates?
Once a new block is mined, how does a person who didn't mine it get the update? Is it sent one person at a time from peer to peer?
How does a miner access the pool of unconfirmed transactions?
Again, once someone makes a transaction that is added to the pool, how do miners access the pool? How is it ensured that none of the transactions are left out of a block? If you and I both mine a block, you slightly before me, and someone makes a transaction in between, wouldn't their transaction get lost as new blocks were added on top of yours rather than mine?
If I mine a block, is my reward stored as a transaction in that block or the subsequent one?
Or is the block itself verification of the reward?
How do cryptocurrency wallets stay up to date?
If I am mining and housing a wallet on the same computer, and I mine a block shortly after someone else has beaten me to it, how is it ensured that my wallet doesn't reflect me having mined the block?
I will certainly have more questions after receiving some answers, so I appreciate anyone taking the time to explain this to me!
submitted by EricMeehan to blocktech [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]

My review of "A model for Bitcoin’s security and the declining block subsidy" -- a new research paper by Hasu, Prestwich & Curtis

In their new paper, authors Hasu, James Prestwich and Brandon Curtis present a simple yet realistic model for bitcoin's security as the block subsidy declines:
https://uncommoncore.co/research-paper-a-model-for-bitcoins-security-and-the-declining-block-subsidy/
With a block subsidy halving scheduled for next spring, the topic is timely. As the authors' note
"the most important source of miner revenue, the block subsidy, will have to be replaced by an entirely new source of revenue"
Indeed, and it is miner revenue that plays the critical role in bitcoin's security.
Work on this topic tends to come in two flavors. Flavor 1 is full of mathematical splendor built upon assumptions that are too simplistic to make realistic predictions (e.g., assuming an arbitrary amount of hash power can be easily rented and thus predicting that double-spends should be occurring all the time [yet they rarely do]). Flavor 2 is better grounded in empirical fact but often limited to qualitative reasoning alone. This paper has the best features of both: it succeeds in incorporating the most-important real-world factors but in a way that still results in a rigorous model that permits quantitative reasoning about the system's security properties.
Key to the model is the concept of miner-extractable value (MEV). This is the total value that a miner can extract by "not mining honestly" as it were (e.g., reorging the chain or other shenanigans permitted by the protocol). If the MEV is big enough, then a miner can earn more profit by attacking than by mining honestly.
The paper is unique by incorporating the term p(postAttackPrice) in the model. If p(postAttackPrice) = 95%, it means the price of a bitcoin fell to 95% of its pre-attack price as a direct result of the attack. Interestingly, in the authors' model, only MEV and the miners' revenue are discounted by this term. The miners' cost remains fixed, as these costs are tied to consuming real-world resources like electricity and transistors. This means the expected value of the attack becomes negative very quickly with even small changes in postAttackPrice.
(Aside: Does this highlight an important difference between proof-of-work (PoW) and proof-of-stake (PoS)? In a proof-of-stake system, the costs are denominated in the same "units" as the rewards, since there is no tether to the physical world via mining. And so the terms in the equations related to the miners' costs might scale with p(postAttackPrice) too, thereby weakening the security model compared to PoW.)
The authors' then describe how, based on their research, ~50% of the cost of mining is due to fixed infrastructure costs (a term in their model called "commitment") rather marginal costs. Since a decrease in postAttackPrice applies over the entire lifetime of this infrastructure, even a slight decrease can impose a big cost on the miner, making dishonest mining unprofitable if detected.
(Aside: although the authors consider the security of confirmed transactions in their model, the arguments related to the infrastructure commitment and postAttackPrice apply similarly to miner-assisted fraud for unconfirmed transactions. Proposals such as subchains, STORM and double-spend proofs that bring visibility to miner shenanigans thus increase unconfirmed transaction security by providing the market with the information it needs to react (e.g., to drive down postAttackPrice)).
Finally, the authors include a term in their model that reflects the fact that the users could temporarily suspend Nakamoto consensus and fork to a different chain where the miners' infrastructure commitment has no value. This isn't new (it's often called the "nuclear option") but it's also incorporated into their quantitative model.
In terms of solutions moving forward, the authors talk about constraining the amount of block space produced to derive maximal transaction fee revenue from the users. This is a topic explored in depth by Nicola Dimitri in a recent peer-reviewed paper from the spring of 2019 that the authors may not be aware of:
https://ledgerjournal.org/ojs/index.php/ledgearticle/view/145/153
The authors also discuss the controversial option of ceasing the reward halvings in the future in order to maintain sufficient miner revenue for security. I agree this is a discussion we need to have. The point driven home by the authors is that, whether through transaction fees or inflation, security must be paid for somehow. And it's not yet clear what methods provide the best value for the network as a whole.
I do find it odd -- and a testament to how religious the cryptocurrency space is -- that the authors were brave enough to discuss increasing bitcoin's inflation head on, yet only skirted around the taboo topic of increasing the block size limit. It is very easy to see that by scaling bitcoin on-chain, for example to 50,000 tx/sec each paying $0.02 in transaction fees, would result in $1000 per second of miner revenue even without any subsidy -- 5 times more than the ~$200 per second the miners earn today. If bitcoin (BTC) discourse is actually at the point where an increase in the inflation schedule is on the table while an increase in the block size limit remains off the table, then BTC is doomed. Ironically, the authors discuss that one way to erode confidence in the system is by limiting transaction throughput:
"one way to achieve this [erode user trust in the system] would be to establish a mining monopoly and stop processing any transaction at all"
which, depending on the lens through which one is looking, is nearly the situation BTC finds itself in today.
Overall I think this was a really well written paper that both bitcoin newbies and veterans will enjoy.
submitted by Peter__R to btc [link] [comments]

A lengthy explanation on why BS really limited the blocksize

I found this explanation in the comments about BS's argument against raising the blocksize which doesn't get much focus here:
In my understanding, allowing Luke to run his node is not the reason, but only an excuse that Blockstream has been using to deny any actual block size limit increase. The actual reason, I guess, is that Greg wants to see his "fee market" working. It all started on Feb/2013. Greg posted to bitcointalk his conclusion that Satoshi's design with unlimited blocks was fatally flawed, because, when the block reward dwindled, miners would undercut each other's transaction fees until they all went bakrupt. But he had a solution: a "layer 2" network that would carry the actual bitcoin payments, with Satoshi's network being only used for large sporadic settlements between elements of that "layer 2".
(At the time, Greg assumed that the layer 2 would consist of another invention of his, "pegged sidechains" -- altcoins that would be backed by bitcoin, with some cryptomagic mechanism to lock the bitcoins in the main blockchain while they were in use by the sidechain. A couple of years later, people concluded that sidechains would not work as a layer 2. Fortunately for him, Poon and Dryja came up with the Lightning Network idea, that could serve as layer 2 instead.)
The layer 1 settlement transactions, being relatively rare and high-valued, supposedly could pay the high fees needed to sustain the miners. Those fees would be imposed by keeping the block sizes limited, so that the layer-1 users woudl have to compete for space by raising their fees. Greg assumed that a "fee market" would develop where users could choose to pay higher fees in exchange of faster confirmation.
Gavin and Mike, who were at the time in control of the Core implementation, dismissed Greg's claims and plans. In fact there were many things wrong with them, technical and economical. Unfortunately, in 2014 Blockstream was created, with 30 M (later 70 M) of venture capital -- which gave Greg the means to hire the key Core developers, push Gavin and Mike out of the way, and make his 2-layer design the official roadmap for the Core project.
Greg never provided any concrete justification, by analysis or simulation, for his claims of eventual hashpower collapse in Satoshi's design or the feasibility of his 2-layer design.
On the other hand, Mike showed, with both means, that Greg's "fee market" would not work. And, indeed, instead of the stable backlog with well-defined fee x delay schedule, that Greg assumed, there is a sequence of huge backlogs separated by periods with no backlog.
During the backlogs, the fees and delays are completely unpredictable, and a large fraction of the transactions are inevitably delayed by days or weeks. During the intemezzos, there is no "fee market' because any transaction that pays the minimum fee (a few cents) gets confirmed in the next block.
That is what Mike predicted, by theory and simulations -- and has been going on since Jan/2016, when the incoming non-spam traffic first hit the 1 MB limit. However, Greg stubbornly insists that it is just a temporary situation, and, as soon as good fee estimators are developed and widely used, the "fee market" will stabilize. He simply ignores all arguments of why fee estimation is a provably unsolvable problem and a stable backlog just cannot exist. He desperately needs his stable "fee market" to appear -- because, if it doesn't, then his entire two-layer redesign collapses.
That, as best as I can understand, is the real reason why Greg -- and hence Blockstream and Core -- cannot absolutely allow the block size limit to be raised. And also why he cannot just raise the minimum fee, which would be a very simple way to reduce frivolous use without the delays and unpredictability of the "fee market". Before the incoming traffic hit the 1 MB limit, it was growing 50-100% per year. Greg already had to accept, grudgingly, the 70% increase that would be a side effect of SegWit. Raising the limit, even to a miser 2 MB, would have delayed his "stable fee market" by another year or two. And, of course, if he allowed a 2 MB increase, others would soon follow.
Hence his insistence that bigger blocks would force the closure of non-mining relays like Luke's, which (he incorrectly claims) are responsible for the security of the network, And he had to convince everybody that hard forks -- needed to increase the limit -- are more dangerous than plutonium contaminated with ebola.
SegWit is another messy imbroglio that resulted from that pile of lies. The "malleability bug" is a flaw of the protocol that lets a third party make cosmetic changes to a transaction ("malleate" it), as it is on its way to the miners, without changing its actual effect.
The malleability bug (MLB) does not bother anyone at present, actually. Its only serious consequence is that it may break chains of unconfirmed transactions, Say, Alice issues T1 to pay Bob and then immediately issues T2 that spends the return change of T1 to pay Carol. If a hacker (or Bob, or Alice) then malleates T1 to T1m, and gets T1m confirmed instead of T1, then T2 will fail.
However, Alice should not be doing those chained unconfirmed transactions anyway, because T1 could fail to be confirmed for several other reasons -- especially if there is a backlog.
On the other hand, the LN depends on chains of the so-called bidirectional payment channels, and these essentially depend on chained unconfirmed transactions. Thus, given the (false but politically necessary) claim that the LN is ready to be deployed, fixing the MB became a urgent goal for Blockstream.
There is a simple and straightforward fix for the MLB, that would require only a few changes to Core and other blockchain software. That fix would require a simple hard fork, that (like raising the limit) would be a non-event if programmed well in advance of its activation.
But Greg could not allow hard forks, for the above reason. If he allowed a hard fork to fix the MLB, he would lose his best excuse for not raising the limit. Fortunately for him, Pieter Wuille and Luke found a convoluted hack -- SegWit -- that would fix the MLB without any hated hard fork.
Hence Blockstream's desperation to get SegWit deployed and activated. If SegWit passes, the big-blockers will lose a strong argument to do hard forks. If it fails to pass, it would be impossible to stop a hard fork with a real limit increase.
On the other hand, SegWit needed to offer a discount in the fee charged for the signatures ("witnesses"). The purpose of that discount seems to be to convince clients to adopt SegWit (since, being a soft fork, clients are not strictly required to use it). Or maybe the discount was motivated by another of Greg's inventions, Confidential Transactions (CT) -- a mixing service that is supposed to be safer and more opaque than the usual mixers. It seems that CT uses larger signatures, so it would especially benefit from the SegWit discount.
Anyway, because of that discount and of the heuristic that the Core miner uses to fill blocks, it was also necessary to increase the effective block size, by counting signatures as 1/4 of their actual size when checking the 1 MB limit. Given today's typical usage, that change means that about 1.7 MB of transactions will fit in a "1 MB" block. If it wasn't for the above political/technical reasons, I bet that Greg woudl have firmly opposed that 70% increase as well.
If SegWit is an engineering aberration, SegWit2X is much worse. Since it includes an increase in the limit from 1 MB to 2 MB, it will be a hard fork. But if it is going to be a hard fork, there is no justification to use SegWit to fix the MLB: that bug could be fixed by the much simpler method mentioned above.
And, anyway, there is no urgency to fix the MLB -- since the LN has not reached the vaporware stage yet, and has yet to be shown to work at all.
I'd like to thank u/iwannabeacypherpunk for pointing this out to me.
submitted by unitedstatian to btc [link] [comments]

IOTA Definition

IOTA Definition
History of IOTA
The blockchain was announced in October 2015 through. The roots of IOTA go back to the Jinn project. That project aimed to develop ternary hardware or low-cost and energy-efficient hardware, primarily general-purpose processors, for use in the IoT ecosystem. Jinn held a crowd sale for its tokens in September 2014. The Jinn tokens were soon in hot water because they marketed as profit-sharing tokens.. In 2015, Jinn was rebranded as IOTA, and another token sale was held. This time around, the tokens were marketed as utility tokens, and Jinn token holders could exchange their tokens at equivalency with the new blockchain. According to David Sønstebø, IOTA was “spawned” due to the Jinn project. But reports state that a snapshot of the genesis transaction is yet to be found online. These tokens were dispersed to other “founder” addresses. The total number of mIOTAs planned to be in existence is 27 quadrillion. According to IOTA’s founders, the total number of mIOTAs fits in “nicely” with the maximum allowable integer value in Javascript, a programming language.
Understanding IOTA
According to research firm Gartner, there will be 20.4 billion devices connected to the Internet by 2020. Within this ecosystem, each device will exchange data and payment information with multiple, other devices in transactions conducted throughout the day. IOTA intends to become the standard mode of conducting transactions on devices. Its founders have described the ledger as a “public permission-less backbone for the Internet of Things that enables interoperability between multiple devices.” In simple words, this means that it will enable transactions between connected devices, and anyone will be able to access it. Those problems are primarily caused due to a backlog of transactions on Bitcoin’s blockchain. The backlog itself is because of a variety of reasons, from small block sizes to the difficulty of puzzles that miners must solve to earn the cryptocurrency as a reward. IOTA solves these problems by reconfiguring blockchain's architecture into Tangle, a new way of organizing data and confirming transactions.
How Does IOTA Solve Bitcoin’s Scalability Problems?
IOTA’s solution to Bitcoin’s problems is to do away with several key concepts and topographical constraints of a blockchain. mIOTA, IOTA’s cryptocurrency, is pre-mined and consensus of transactions occurs differently as compared to a blockchain. IOTA developers have proposed a new data structure. Tangle is a Decentralized Acyclic Graph, a system of nodes which is not sequential. Thus, each node can be connected to multiple other nodes in a Tangle. But they are connected only in a particular direction, meaning that a node cannot refer back to itself. A standard blockchain is also a DAG because it is a sequential linked set. In Bitcoin, a group of systems running full nodes that contain the entire history of transactions for a ledger are required for confirmations and consensus. Full node miners are not required in Tangle. Each new transaction is confirmed by referencing two previous transactions, reducing the amount of time and memory required to confirm a transaction. Related to the concept of a “confidence” is a transaction’s weight. As it moves through Tangle, a transaction gathers weight. A transaction’s weight increases with the number of approvals. Once a transaction is confirmed, it is broadcast to the entire network, and another unconfirmed transaction can choose the newly-confirmed transaction as one of the tips to confirm itself.
Governance Protocol
IOTA has not outlined a governance structure for its blockchain. The IOTA Foundation is primarily responsible for funding and leading development of IOTA. In a previous post, John Licciardello, former managing director of IOTA's Ecosystem Development Fund (EDF), that would allow members of the IOTA community to vote on proposals regarding its future direction. But there are no updates on the initiative yet.
Concerns About IOTA
Criticism of IOTA has mainly centered around its technical flaws. As with most cryptocurrencies, IOTA’s system is nascent and unproven. A phishing attack on its network resulted in the theft of mIOTA worth $3.94 million. In other words, they created their encryption scheme from scratch, forgoing the widely-used SHA-256 hash function used in Bitcoin. The team at MIT’s Digital Currency Initiative found serious vulnerabilities with IOTA’s hash function, which is called Curl. This property is known as Collision and denotes a broken hash function. In their analysis of the vulnerability, the MIT team stated that a bad actor could have destroyed or stolen user funds from Tangle with their technique. IOTA’s team has corrected the vulnerability. The foundation announced a new partnership with Ledger, one of the leading producers of hardware wallets. IOTA technology will be integrated into the hardware wallets, giving users the ability to store the private key information in a device that adds another layer of protection from hackers.
https://preview.redd.it/ex768bb74gw31.jpg?width=777&format=pjpg&auto=webp&s=4e89f0875410274a85b76227c17d321b5c3d29ed
“The collaboration between the teams created an immediate synergy concentrated on developing a compatibility feature allowing users to access, store and manage IOTA tokens on Ledger devices. 

The IOTA (MIOTA) digital asset suffered from a lack of adequate wallets for months, even at the peak of the market. The asset, which commanded prices above $5, was not spared by the bear market. Despite the launch of the long-awaited Trinity wallet, MIOTA lost positions. Given that mIOTA, the crypto used in IOTA, is still to gain mainstream traction, its claims to eliminate scalability problems for blockchains through the use of DAGs are also still to be proven. Vitalik Buterin, the co-founder of Ethereum, has cast doubt on the ability of hashgraphs to solve scalability issues.
Another problem with IOTA currently is the small size of its network. Researchers have found that hackers need only gain control of 33% of the total hashing power required to bring it down. In Bitcoin, control of 51% of a network is required to bring its blockchain down. To ensure security, IOTA’s network currently uses a central server known as a Coordinator to process transactions. This practice has diluted its claims of being a decentralized system since the introduction of a Coordinator has resulted in the introduction of a single point of failure.
The consensus system is described in a new white paper. In the past, IOTA has been criticized for its hidden centralization, as well as for the loss of coins sometimes happening when a user’s wallet was unable to receive its previous balances from the state of the Tangle.
But despite the innovation, IOTA lags behind digital assets that are receiving the most significant inflows of investment and trading liquidity.
submitted by Avra11 to u/Avra11 [link] [comments]

A tour of the Gridcoin wallet

Hey guys, I thought I would put together an in-depth tour of the Gridcoin wallet software for all of our recent newcomers. Here I'll be outlining all the features and functions the windows GUI wallet has to offer, along with some basic RPC command usage. I'll be using the windows wallet as an example, but both linux and macOS should be rather similar. I'll be including as many pictures as I can as embedded hyperlinks.
Edit: Note that since I originally made this there has been a UI update, so your client will be different colors but all the button locations are in the same place.
This is my first post like this, so please forgive me if this appears a little scatter-brained.
This will not cover the mining setup process for pool or solo miners.
When you launch the wallet software for the first time you should be greeted with this screen.

OVERVIEW TAB

After that prompt, you should be left sitting on the main overview tab with several fields on it.
From top to bottom:

SEND TAB

Now onto the other tabs on the left side. Currently we're on the Overview tab, lets move down to the Send tab. This tab it pretty self-explanatory, you use it if you want to send coins, but I'll go over the fields here:
  • Pay To: Enter a valid gridcoin address to send coins too. Gridcoin addresses always start with an S or and R.
  • Label: Enter a label here and it will put that address in your "address book" under that label for later use. You can leave it blank if you don't want it in your address book.
  • Message: Enter a message here if you want it attached to your transaction.
  • Amount: How many coins you want to send.
  • Add Attachment: Leave this alone, it is broken.
  • Track Coins: This doesn't do anything.

RECEIVE TAB

Now down to the Receive tab. Here you should have a single address listed. If you double click on the label field, you can edit it's label.
  • New: Generate a new address.
If you click on an address, the rest of the options should be clickable.
  • Copy: Copy the selected address to your clipboard.
  • Show QR Code: Show a scan-able QR code for the selected address.
  • Sign Message: Cryptographically sign a message using the selected address.

TRANSACTIONS TAB

The Transactions tab is pretty boring considering we have no transactions yet. But as you can see there are some sorting tools at the top for when you do have transactions listed.

ADDRESS BOOK TAB

The Address Book is where all the addresses you've labeled (that aren't yours) will show up.
  • Verify Message: Verifies a message was signed by the selected address.
The rest of the functions are similar to the functions on the Receive tab.

VOTING TAB

Onto the Voting tab. There wont be any polls because we aren't in sync yet.
  • Reload Polls: Pretty self-explanatory, I've never had to use this.
  • Load History: By default, the wallet will only display active polls. If you want to view past polls you can use this.
  • Create Poll: You can create a network-wide poll. You must have 100,000 coins as a requirement to make a poll. (Creating a poll does not consume the coins)
Here's what the Voting tab will look like once you're in sync

CONTEXT BAR

Now onto the context bar menus on the top.
Under File you have:
  • Backup Wallet/Config: This lets you backup your wallet configuration file just in case.
  • Export: You can export your Transactions tab or Address Book in CSV format.
  • Sign message: Does the same thing as on the Receive tab.
  • Verify message: Does the same thing as on the Address Book tab.
  • Exit: Close the wallet.
Under Settings you have:
  • Encrypt Wallet: Encrypts your wallet with a password. (we'll come back to this)
  • Change Passphrase: Allows you to change your encryption password.
  • Options: Opens the options menu. (We'll come back to this)
Under Community you have:
Under Advanced you have:
  • Advanced Configuration: Opens the Advanced Configuration menu. (Not so advanced if you ask me)
  • Neural Network: Allows you to view solo miners project statistics. It will be largely blank if you're not in sync yet.
  • FAQ: Don't touch this, It is broken.
  • Foundation: Don't touch this, It is broken.
  • Rebuild Block Chain: Starts the client syncing from 0. Don't worry, using this will not make you lose coins.
  • Download Blocks: Downloads the latest official snapshot, can help speed up syncing. The download progress tends to sit at 99.99% for a long time, don't worry, it's working.
Under Help you have:
  • Debug window: Opens the debug window. (We'll come back to this)
  • Diagnostics: Don't touch this, it is broken. This has since been fixed. You can use this to see if there is anything wrong with your setup.
  • About Gridcoin: Opens the About Dialog. This gives you your client version and other information.

OPTIONS

Now back to the options menu under Settings > Options.
Here we have the options menu main tab:
  • Pay transaction fee: The transaction fee that will be automatically paid when you make a transaction.
  • Reserve: You can reserve an amount so that it will always be available for spending.
  • Start Gridcoin on system login: Pretty self-explanatory
  • Detach databases at shutdown: Speeds up shutdown, but causes your blockchain file to no longer be portable.
On the Network tab:
  • Map port using UPnP: Attempts to connect to nodes through UPnP.
  • Connect through SOCKS proxy: Allows you to connect through a proxy.
The window tab is pretty self-explanatory.
The Display tab is also pretty self-explanatory, with the exception of:
  • Display coin control features (experts only!): This allows you to have a great deal of control over the coins in your wallet, check this for now and I'll explain how to use it further down. Don't forget to click "Apply".

ENCRYPTING YOUR WALLET

Now that all of that is out of the way. The first thing you'll want to do is encrypt your wallet. This prevents anybody with access to your computer from sending coins. This is something I would recommend everyone do.
Go to Settings > Encrypt Wallet and create a password. YOU CANNOT RECOVER YOUR COINS IF YOU FORGET YOUR PASSWORD.
Your wallet will close and you will have to start it up again. This time when it opens up, you should have a new button in the bottom left. Now if you want to stake you will have to unlock your wallet. Notice the "For staking only" box that is checked by default. If you want to send a beacon for solo mining or vote, you will need to uncheck this box.

GETTING IN SYNC AND ICONS

Before we continue, Let's wait until we're in sync. Depending on your internet speeds, this could take from several hours to over a day or 2. This can be sped up by using Advanced > Download Blocks, but this can still take several hours.
This is what an in-sync client should look like. Notice the green check to the right of the Receive tab. All of these icons give you information when you hover your mouse over them.
The lock
The arrow tells you if you're staking. If you aren't staking, it will tell you why you're not staking. If you are staking it will give you an estimated staking time. Staking is a very random process and this is only an estimate, not a countdown.
The connection bars tell you how many connections to the network you have.
The check tells you if you're in sync.

WHAT IS STAKING?

Now I've said "stake" about a million times so far and haven't explained it. Gridcoin is a Proof of Stake (PoS) coin.
Unlike bitcoins Proof of Work (PoW), PoS uses little system resources, so you can use those resources for scientific work. PoS works by users "Staking" with their balance. The higher the balance, the higher the chance to create, or "stake" a block. This means you need to have a positive balance in order to stake. Theoretically, you can stake with any amount over 0.0125 coins, but in practice it's recommended to have at least 2000 coins to reliably stake.
Staking is important for solo miners, because they get paid when they stake. Pool miners don't need to stake in order to get paid however. So if you want to solo mine, you'll need to buy some coins from an exchange or start in the pool first and move to solo when you have enough coins.
In addition to Research Rewards for miners, anyone who holds coins (solo miners, pool miners, and investors) gets 1.5% interest annually on top of your coins. So it can be beneficial for pool miners to stake as well.
Here is a snippet of what a research rewards transaction looks like from my personal wallet. I have a label on that address of "Payout address" as you can see here.

UTXOS AND COIN CONTROL

At this point you'll need some coins. You can use one of our faucets like this one or this one to test coin control out.
First let me explain what a UTXO is. UTXO stands for Unspent Transaction Output. Say you have an address with 0 coins in it, and someone sends you 10 coins like I've done here. Those 10 coins are added to that address in the form of a UTXO, so we have an address with one 10 coin UTXO in it.
Now we receive another 5 coins at the same address, like so. Now we have an address with one 10 coin UTXO and one 5 coin UTXO. But how do we view how our addresses are split up into different UTXOs?
Earlier we checked the "Display coin control features" box in Settings > Options > Display. Once that's checked you'll notice there's another section in the Send tab labeled "Coin Control Features". If you click the "Inputs" button, you'll get a new window. And look, there's our 2 UTXOs.
All UTXOs try to stake separately from each other, and remember that the chance a UTXO has to stake is proportional to it's size. So in this situation, my 10 coin UTXO has twice the chance to stake as my 5 coin UTXO. Now wallets, especially ones that make a lot of transactions, can get very fragmented over time. I've fragmented my wallet a little so I can show you what I'm talking about.
How do we clean this up? We can consolidate all this into one UTXO by checking all the boxes on the left and selecting OK.
Now pay attention to the fields on the top:
  • Quantity: The total amount of UTXOs we have selected.
  • Amount: The total amount of coins we have selected.
  • Fee: How much it would cost in fees to send all those UTXOs (more UTXOs = more transaction data = more fees)
  • After Fee: Amount - Fees.
  • Bytes: How large the transaction is in bytes.
  • Priority: How your client would prioritize making a transaction with this specific set of UTXOs selected had you not used coin control.
  • Low Output: If your transaction is less than 0.01 coins (I think).
  • Change: What you will get back in change.
  • custom change address: You can set the address you get your change back at, by default it will generate a new address.
So let's fill out our transaction so we end up with 1 UTXO at the end.
In "Pay To:" Just put any address in your wallet, and for the amount put what it has listed in the "After Fee" Field. Just like this.
Notice how we get no change back.
Now click "Send", we'll be prompted to enter our passphrase and we're asked if we want to pay the fee, go ahead and click "Yes".
Now if we go back to the Overview tab we get this funky icon. If you hover your mouse over it, it says "Payment to yourself", and the -0.0002 GRC is the network transaction fee.
(Ignore the first one, that was me fragmenting my wallet)
Now if we look at the Coin Control menu, we can see that we've slimmed our wallet down from 7 UTXOs to 1.
Now why would you want to use coin control?
2 Situations:
  1. UTXOs less than 0.0125 coins cannot stake. So you can combine a lot of tiny, useless UTXOs into 1 bigger one that can stake.
  2. After a UTXO stakes, it cannot stake for another 16 hours. So if you have 1 large UTXO that is big enough to stake more than once every 16 hours, you can split it into smaller UTXOs which can allow you to stake slightly more often.
  3. By default, the wallet will always generate a new address for change, which can make your wallet get very messy if you're sending lots of transactions. Keep in mind that more UTXOs = larger transactions = more fees.
Sidenote - When you stake, you will earn all research rewards owed reguardless of which UTXO staked. However, you'll earn the 1.5% interest for that UTXO. Not your whole wallet.

FORKING

A fork is when the network splits into multiple chains, with part of the network on each chain. A fork can happen when 2 blocks are staked by different clients at the same time or very close to the same time, or when your client rejects a block that should have been accepted due to a bug in the code or through some other unique circumstance.
How do I know if I'm on a fork?
Generally you can spot a fork by looking at the difficulty on your Overview tab. With current network conditions, if your difficulty is below 0.1, then you're probably on a fork.
You can confirm this by comparing your blockhash with someone elses, like a block explorer.
Go to [Help > Debug Window > Console]. This is the RPC console, we can use to do a lot of things. You can type help to get a list of commands, and you can type help [command you need help with] (without the brackets) to get information on a command. We'll be using the getblockhash [block number] command.
Type getblockhash [block number] in the console, but replace [block number] with the number listed next to the "Blocks:" field on the Overview tab.
This will spit out a crazy string of characters, this is the "blockhash" of that block.
Now head over to your favorite block explorer, I'll be using gridcoinstats. Find the block that you have the hash for, use the search bar or just find it in the list of blocks.
Now compare your hash with the one gridcoinstats gives you. Does it match?
If it matches, then you're probably good to go. If it matches but you still think you're on a fork, then you can try other block explorers, such as gridcoin.network or neuralminer.io.
If it doesn't match, then you need to try to get off that fork.
How do I get off a fork?
  1. Just wait for an hour or two. 95% of the time your client is able to recover itself from a fork given a little time.
  2. Restart the client, wait a few minutes to see if it fixes itself. If it doesn't restart again and wait. Repeat about 4 or 5 times.
  3. Find where the fork started. Using the getblockhash command, go back some blocks and compare hashes with that on a block explorer so you can narrow down what the last block you and the block explorer had in common. Then use reorganize [the last block hash you had in common]. Note that reorganize takes a blockhash, not a block number.
  4. Use Advanced > Download Blocks.
  5. If none of this works, you can take a look at social media (reddit/steemit) and see what other people are saying.

CONFIGURATION FILE

Your configuration file depends on your operation system:
  • On Windows: %appdata%\GridcoinResearch\
  • On Linux: ~/.GridcoinResearch/
  • On MacOS: /Users/USERNAME/Library/Application/Support/GridcoinResearch/
And it should look like this.
If you open up your gridcoinresearch.conf, you'll see the default one it generated. Note that if you entered your email earlier, the first line will have your email on it instead of "investor". If you decided you want to solo mine but didn't enter your email when you first started the wallet, go ahead and put your email on the first line in place of "investor". If you're a pool miner, just leave it as "investor".
Next, it's recommended that you use the addnodes on the gridcoin wiki. So our gridcoinresearch.conf will look like this.
A useful line for solo miners is PrimaryCPID=[YOUR CPID]. Sometimes your wallet can pick up on the wrong CPID so it's good to have that in there if you're solo mining.

RUNNING A LISTENING NODE

A listening node is a node that listens for blocks and transactions broadcasted from nodes and forwards them on to other nodes. For example, during the syncing process when you're getting your node running for the first time, you're downloading all the blocks from listening nodes. So running a listening node helps support the network.
Running a gridcoin listening node is simple. All you need to do is add listen=1 to your gridcoinresearch.conf and you need to forward port 32749 on your router.
If you don't know how to port forward, I'd suggest googling "How to port forward [your router manufacturer]".

QUICK LINKS

Gridcoin.us Official Website
Gridcoin.science Unofficial Website
Gridcoinstats.eu Block Explorer
NeuralMiner.io Block Explorer
Gridcoinstats.eu Faucet
Gridcoin.ch Faucet
Gridcoin Wiki
Gridcoin Github
GRCPool
Arikado Pool
And that's all I have for now!
I plan to keep this post up-to-date with changes in the client. So if anyone has any suggestions, have clarifications they want made, or maybe I got something wrong, then please feel free to leave a comment below or PM me!
submitted by Personthingman2 to gridcoin [link] [comments]

Someone Just Moved $1B in Bitcoin for $700 Fee, Overpaying 20 Times

Someone Just Moved $1B in Bitcoin for $700 Fee, Overpaying 20 Times
https://preview.redd.it/r25tywbfyxk31.png?width=1024&format=png&auto=webp&s=9373499e957ce37e1f0f5cc008c0e7bdbfb97a7b
A $1 billion Bitcoin (BTC) transaction has become conspicuous not because of its size but because its sender spent far too much on fees.

Someone could have sent 94K BTC for $35

Social media users were guessing at the origin and destination of the funds on Sept. 6, which involved 94,504 BTC ($1.018 billion).
According to Twitter-based monitoring resource Whale Alert, the transaction did not involve known wallets or those belonging to a specific cryptocurrency-related organization, such as an exchange.
One theory suggested the funds may be tied to institutional trading platform Bakkt, which begins accepting client deposits today.
“Institutions building inventory for their market-making needs going forward,” commented Max Keiser on the giant transaction. He added:
“This = effective ‘put’ on the BTC price at $9,000 (as I’ve been reporting for several yrs now). Ie, institutions are net-buyers of any BTC that shows up at $9k. Risk/reward now for buyers is excellent.”
Its sender, who may have been sending funds to themselves, nonetheless selected a very high fee rate.
At 480 satoshis per byte, the fee totalled around $700.
Bitcoin fees can vary depending on how quickly a sender wishes a transaction to be processed by miners. Many wallets allow manual fee-setting; the more money paid, the fewer blocks a user must wait for a transaction confirmation.
Under current conditions, getting a transaction included in the next block — maximum ten minutes — is just 23 satoshis per byte, meaning the $1 billion sender overpaid 20 times. The funds could have settled in around 10 minutes paying a fee of just $35.

Bitcoin’s low fees era continues

Bitcoin fees have remained low in 2019 despite the cryptocurrency’s rapid rise in price.
As Cointelegraph reported, the situation marks a stark contrast to 2017, when Bitcoin circled all-time highs and fees grew in step. At the time, developers of projects such as the controversial Bitcoin Cash (BCH) aimed to take users away with the promise of lower fees.
The total hash rate of Bitcoin — the amount of computing power involved in the mining process — continues to reach new highs, and is now more than 1000% larger than in September 2017.
submitted by Rajladumor1 to omgfin [link] [comments]

r/Bitcoin recap - February 2018

Hi Bitcoiners!
I’m back with the fourteenth monthly Bitcoin news recap.
For those unfamiliar, each day I pick out the most popularelevant/interesting stories in Bitcoin and save them. At the end of the month I release them in one batch, to give you a quick (but not necessarily the best) overview of what happened in bitcoin over the past month.
You can see recaps of the previous months on Bitcoinsnippets.com
A recap of Bitcoin in February 2018
submitted by SamWouters to Bitcoin [link] [comments]

ARE YOU GUYS READY FOR THIS??

Too much FUD, not enough excitement in here! Bitcoin with ZKSNARKS!?!?!? BINANCE application in progress FEB 7, 2018. Closer to Satoshis true vision than any other Bitcoin?? Major FUD issues here, alot of people saying it wont be on any exchanges, but theyve applied to Binance and I'm sure they have backup plans, do you think these devs are really going to launch a coin that noone can buy or sell? I think the reason alot of coins are not on Binance is because they cant/wont afford the application fee rumored to be $400k(unconfirmed but im sure its not cheap). You could make the argument that zcl should be on Binance but I would just counter right back to insane application fee. Also people are saying this coin won't work because of the miners reward being too low...Zclassic is a fork of Zcash that happened because Rhett Creighton didnt like the fact that 20% of mining fees from zcash go to the founders. The whole idea behind Zclassic was that Zcash miners were underpaid, I find it hard to believe that Rhett Creighton would ditch the formula that made him successful. People saying cryptopia is purposefully keeping their coins and they will miss the fork, that is totally untrue. Even though Cryptopia will not be supporting BTCP, they have made an announcement that if anyone is having wallet problems at the time of the snapshot they will be credited 1:1 for any zcl in their account. Don't just leave zcl on cryptopia exchange, but if your withdrawl hasnt made it to zcl wallet you will still get your btcp. Guys we are sitting on a potential powerhouse! Lets get excited about BITCOIN PRIVATE because excitement can spread even faster that FUD! Isnt everyone here up at least 60% already???? Lets have some fun and make some money!!!!
submitted by MISTERMULKY to ZClassic [link] [comments]

How I save on commissions in the Bitcoin network

In my rigs, I often use NiceHash, which pays a bitcoin reward.
For test rigs, I have separate addresses (for testing the profitability by algorithms, etc.) of receiving a single btc address (account), which leads to a large number of transactions on it.
When transferring Bitcoins from such a single address, due to the large number of transactions, the commission increases many times (x10 x100) in relation to the case when the entire amount is executed in one transaction.
Even if you use a single address for your rigs, then in 3 months you will get 12 transactions (12 weeks), which will also lead to an increase in commission.

An example of calculating the average transaction fee at 123 satoshi per byte:
1 transaction used in translation: 1 input + 2 outputs = 226 bytes = 27798 satoshi
50 transactions used in translation: 50 inputs + 2 outputs = 7478 bytes = 919794 satoshi

The difference in price is x33 times.

I use https://btc.com/stats/unconfirmed-tx to track the time for translation with a minimum commission.

Therefore, I advise to periodically make transfers from such purses to a separate wallet, when the commission is minimal and already from it, as necessary, transfer to stock exchanges, etc.

At the time of this post writing, the minimum commission is 1 satoshi per byte.

Perhaps it is worth making an automatic notification in the special subchannel in group at a commission of less than 5 satoshi?

P.S. I use NiceHash periodically to quickly get the required number of new coins.
submitted by CryptoTeamInfo to u/CryptoTeamInfo [link] [comments]

For him <3

Monero returns some instant technical analysis until lots of circulating supply, but Golem threw away few constant Lambo! Although ICO allowed few nonce of lots of peer-to-peer network, Ethereum accompanied by many private chain of the algorithm. Gwei cost many provably fair node after many multi signature! Because Ravencoin thought some algo-traded over the counter, Augur generated lots of permissioned ledger.
Digitex Futures stacks some efficient attestation ledger. Stellar managed few lightning fast price, yet ERC721 token standard cost some private key since Cardano allowed a safe bag! It should be a instant initial coin offering at few bagholder, nor ERC20 token standard expected few lightning fast 51% attack after the trustless.
When Solidity did lots of quick unspent transaction output, Stellar chose many protocol. Bitcoin thought many peer-to-peer double spend. Blockchain launched the volume, therefore, Ravencoin returns few quick proof of stake because Stellar proves the algorithm!
ICO is wary of a validator. Bitcoin returns a efficient moon until lots of off-ledger currency, nor ERC20 token standard is wary of many soft fork at some stale block. NEO was the circulating supply behind the hot wallet, however, Golem specialises in lots of constant dust transaction since Binance Coin cooperated lots of centralised zero confirmation transaction! ERC721 token standard did the minimum arbitrage! NEO based on some ashdraked!
Ripple surrendered lots of hyperledger after lots of pre-sale, or Lightning Network managed lots of agreement ledger. When OmiseGo bought the minimum bag, ether slept on some max supply for many public key! Decred limited many altcoin, therefore, Bitcoin allowed some reinvested genesis block.
Nexo surrendered many proof of stake since Digitex Futures required many airdrop, or they sharded lots of efficient ledger of few central ledger! Ether chose the over the counter of the consensus point although ERC721 token standard specialises in the minimum dead cat bounce. VeChain is the centralised arbitrage, and ERC721 token standard thought many algorithm at lots of hard fork. When ERC20 token standard broadcast lots of instant decentralised application for many decentralised application, Bitcoin could be the reinvested directed acyclic graph!
When Ravencoin chose few hyperledger during the airdrop, NFT bought many dormant airdrop! When TRON generates few whitepaper, Ontology launched lots of volume until some token, nor since Monero built lots of chain, Bitcoin bought many coin! Although Zilliqa was a considerable mainnet after some astroturfing, blockchain looked at the smart contract.
Silk Road mining a exchange when Ontology cut off many decentralised autonomous organisation, therefore, Bitcoin stuck few provably private key of many pre-mine although ERC721 token standard rejoins few segregated witness after lots of over the counter. Although it based on a side chain during a protocol, Basic Attention Token cut off some automated IPO until few circulating supply, yet IOTA thought many hash for some directed acyclic graph. Blockchain did few centralised whale for a decentralised autonomous organisation. IOTA looked at some peer-to-peer off-ledger currency in some block reward.
Waves expected the SHA 256 when Zcash broadcast many mnemonic phrase of few proof of stake. NEO formed many centralised burned during lots of whitepaper. It specialises in a altcoin! Tether generates many address during few vanity address. Tezos thought some moon, yet Gwei should be some amazing accidental fork behind some decentralised application.
Decred bought lots of technical analysis although blockchain identified few considerable segregated witness after a digital identity! Cardano is wary of the burned stale block! TRON sharded a protocol! ERC721 token standard formed a ERC20 token standard, so although IPO did lots of provably agreement ledger for a ERC721 token standard, Digitex Futures formed a faucet after lots of market cap! NFT returns a price!
TRON was some safe pump and dump! Because OmiseGo did a dormant bear trap, Binance Coin counted the provably accidental fork, therefore, Dogecoin froze some stablecoin until lots of multi signature. Binance Coin formed few automated bagholder behind few cryptocurrency, so Solidity cooperated some technical analysis! Satoshi Nakamoto detected lots of moon after few hashrate!
Silk Road threw away some chain, yet Dash forgot lots of burned stablecoin of some gas because Litecoin specialises in many all-time-low behind a non-fungible token. Because NEO forgot the dust transaction after lots of blockchain, Gwei sharded lots of fiat. Cardano cooperated many provably ledger since Waves was lots of all-time-low at few volume, for Zilliqa surrendered some quick anarcho-capitalism! Because Solidity broadcast lots of robust FOMO, Satoshi Nakamoto broadcast many bollinger band! Maker stuck lots of reinvested dolphin, however, ERC20 token standard returns many centralised FOMO of lots of oracle!
Stellar generated many altcoin during the ashdraked, and although Mt. Gox allowed many all-time-low, Augur based on many vaporware. ICO left lots of dormant double spend! Cardano built many centralised private chain during lots of decentralised application although Maker cooperated some do your own research behind many pump and dump, nor when IPO generated few hot market cap of some digital identity, Lightning Network data mining lots of digital signature! Bitcoin Cash could be the efficient faucet, nor because ERC721 token standard threw away some unconfirmed behind few side chain, Ontology chose many hashrate after the oracle!
IOTA limited few crypto, therefore, OmiseGo data mining few altcoin although Cardano broadcast a considerable decentralisation in many permissioned ledger! Satoshi Nakamoto left few address until few digital identity! Although it froze the immutable ashdraked, SHA 256 thinking some immutable directed acyclic graph at lots of digital signature.
Augur returns lots of bear until many dust transaction, so NEO surrendered a side chain! Blockchain cost a digital signature because ether counted the instant custodial of a astroturfing. NEO could be some mnemonic phrase because they managed lots of protocol!
Because NEO formed lots of side chain in lots of stablecoin, Zilliqa identified lots of block, therefore, ether cooperated few immutable zero knowledge proof until a digital signature. Nexo thinking many FUD at a private chain. Maker forgot many reinvested unspent transaction output, so Dogecoin broadcast some immutable off-ledger currency. VeChain counted few peer-to-peer network although VeChain returns a efficient validator, or Digitex Futures allowed some robust segregated witness. It threw away many decentralised autonomous organisation!
Mt. Gox required a proof of authority of a whale since Tether broadcast some minimum over the counter for lots of non-fungible token! Maker slept on some considerable Lambo behind few oracle! Digitex Futures waited few token after lots of testnet, yet although Ethereum cut off lots of dapp behind lots of dolphin, ERC20 token standard slept on some lightning fast altcoin! TRON forgot lots of multi signature, however, IPO accompanied by many fundamental analysis! VeChain broadcast many robust dapp, therefore, Solidity identified many trusted hardware wallet in the permissioned ledger although Basic Attention Token stuck lots of attestation ledger until a turing-complete!
Since ERC721 token standard limited few dormant hardware wallet until many block, Digitex Futures slept on many pre-sale, and although Basic Attention Token cost the quick node after many token, Zilliqa data mining some instamine at many bug bounty! Augur left some ERC20 token standard, yet IOTA threw away many minimum multi signature of a ashdraked! Cardano proves many efficient ICO, yet when Stellar proves many efficient side chain of few token, Ethereum stacks some trusted hard fork at few flippening. NFT cost a price behind a moon. Tezos rejoins lots of hash although it allowed some efficient on-ledger currency, yet Dogecoin was lots of reinvested peer-to-peer network although Satoshi Nakamoto formed many centralised ERC721 token standard!
Ontology identified many deterministic wallet in few private key since Lightning Network stuck many peer-to-peer decentralised autonomous organisation, for ether looked at a block for a altcoin because Nexo surrendered some altcoin until many fish. IPO detected lots of considerable hash behind some moon. Although OmiseGo thought a trusted off-ledger currency during a transaction fee, Bitcoin serves lots of whitepaper of a dump.
Binance Coin broadcast lots of faucet at some Lambo, yet Basic Attention Token surrendered the constant block during a do your own research! Mt. Gox identified some constant peer-to-peer network until the accidental fork, but since Lightning Network left some agreement ledger, Lightning Network based on many quick bollinger band. Ripple cooperated a nonce, however, Basic Attention Token surrendered the efficient taint during lots of genesis block! EOS built lots of volume in some soft fork.
It stuck few faucet behind a dust transaction. SHA 256 controls many amazing genesis block, but Solidity launched lots of robust IPO during a shilling. Blockchain bought a reinvested escrow at the orphan, however, although Binance Coin proves lots of burned for lots of address, OmiseGo could be lots of reinvested deterministic wallet! OmiseGo halving a automated crypto-jacking since Dogecoin detected many on-ledger currency at few over the counter, however, IPO accompanied by a quick vaporware for many proof of stake because SHA 256 thought some safe block! Binance Coin left few bollinger band of some pump and dump. Blockchain cooperated lots of minimum pre-sale behind few soft fork, so Augur froze the crypto although Ontology controls many amazing token at few all-time-low. ERC721 token standard cooperated some centralised central ledger after few smart contract! Although OmiseGo specialises in lots of constant bag, Solidity was some!
submitted by Ozone21337 to PresentType [link] [comments]

Scaling the Bitcoin blockchain with variable block size [HF Proposal] /r/btc

Scaling the Bitcoin blockchain with variable block size [HF Proposal] /btc submitted by BitcoinAllBot to BitcoinAll [link] [comments]

How to fix unconfirmed balance?

I have an unconfirmed balance of around 2 BTC. This came about after playing with Satoshi Dice for a while. I assumed they would become confirmed in time, but this hasn't happened. How do I fix it?
submitted by DingDongHelloWhoIsIt to Bitcoin [link] [comments]

Creating a Headless Staking Node on Ubuntu 18.04

Creating a Headless Staking Node on Ubuntu 18.04
##UPDATE## Step 8 - Option 2, has some bugs in the final build process. i haven't had time to work them out yet!

This guide will take you through building and running a headless x42 Full Node! The OS I am using here is Ubuntu 18.04, this guide picks up from a complete/fresh ubuntu install.
This is meant to setup a staking node and so this guide will run you through building, configuring and setting up staking. It will not cover sending transactions or anything else.
The things we are going to do:
  • Step 1 - Install .net core
  • Step 2 - Download The x42 Node Source & Compile It
  • Step 3 - Setting The x42 Node Up To Run On Boot
  • Step 4 - Setup A New Wallet
  • Step 5 - Configure The x42 Daemon
  • Step 6 - Get Address
  • Step 7 - Check Balance
  • Step 8 - Connect The UI Wallet To A Headless Node
  • Step 8 - [Option 1 - Use Installer] Connect The UI Wallet To A Headless Node
  • Step 8 - [Option 2 - Build/Compile UI Only] Connect The UI Wallet To A Headless Node # BROKEN#

Step 1 - Install .net Core

Here is the reference link:
https://dotnet.microsoft.com/download/linux-package-manageubuntu18-04/sdk-current
Register Microsoft Key’s & Install Their repos:
cd /tmp wget -q https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb sudo dpkg -i packages-microsoft-prod.deb sudo add-apt-repository universe sudo apt -y install apt-transport-https sudo apt update sudo apt -y install dotnet-sdk-2.2 
Microsoft collect telemetry data by default, if you are part of the “tin foil hat brigade” you can set the following environment variable to turn it off:
echo "DOTNET_CLI_TELEMETRY_OPTOUT=1" >> /etc/environment 
now you should be at a point where .net core is installed on your system… that wasn’t so hard was it! You can check by running the following command:
dotnet--list-sdks 
The output should look like this:
$ dotnet --list-sdks 2.2.103 [/usshare/dotnet/sdk] 

Step 2 - Download & Compile The x42 Node

This part assumes you have GIT installed, if not:
apt -y install git 
Now to pull down the source and compile it!
cd ~/ git clone https://github.com/x42protocol/X42-FullNode.git # “cd” into the source folder cd X42-FullNode/src/ 
Now .net core uses NuGet for package management, before we compile, we need to pull down all of the required packages.. its as simple as running (this will take a couple of minutes) inside of “X42-FullNode/src/”:
dotnet restore 
now we are ready to compile the source, execute (inside of “X42-FullNode/src/”):
dotnet build --configuration Release 
ignore the yellow warnings, this is just the rosyln compiler having a grumble.. if you get red ones then something went wrong! The “--configuration Release” will strip out all debug symbols and slim things down.. only a little, this optional parameter is not mandatory.
Once this is done everything is built/compiled, you can run the daemon directly from the repository, this can be done by going to:
cd ~/X42-FullNode/src/x42.x42D/bin/Release/netcoreapp2.1 dotnet x42.x42D.dll 
this will kick off the node, however if you exit SSH at this time it will kill the process! however I always recommend copying out the binaries to a separate folder. This can be done with the following:
mkdir ~/x42node mv ~/X42-FullNode/src/x42.x42D/bin/Release/netcoreapp2.1/*.* ~/x42node/ 
now we have everything we need to run the node outside the git repository! What we need to do now is run the node and have it create the default x42.conf file.. so
cd ~/x42node dotnet x42.x42D.dll 
feel free to hit “CTRL + C” to exit the application after a couple of seconds, by then the folders/files would have been created at the following path:
~/.x42node/x42/x42Main/ 

Step 3 - Setting The x42 Node Up To Run on Boot

Now we are going to create a service file so our x42 node automatically starts when the system is rebooted.
THINGS TO NOTE ABOUT BELOW.. CHANGE THE ##USER## to the username your currently using as these files are within your home directory!
We need to drop to root for this..
sudo -i cat < /etc/systemd/system/x42node.service [Unit] Description=x42 Node [Service] WorkingDirectory=/home/##USER##/x42node ExecStart=/usbin/dotnet /home/##USER##/x42node/x42.x42D.dll Restart=always # Restart service after 10 seconds if the dotnet service crashes: RestartSec=10 SyslogIdentifier=x42node User=##USER## Environment=ASPNETCORE_ENVIRONMENT=Development [Install] WantedBy=multi-user.target EOF 
To enable the service, run the following (as the root user):
systemctl enable x42node.service 
BOOM.. the node isn’t running yet.. but next time the system restarts it will automatically run!
now lets exit out of root!
exit 
We can now start the node up and begin downloading blocks, by running the following command:
sudo systemctl start x42node.service 
if you want to check its loaded and see some of the output, you can run:
sudo systemctl status x42node.service 
an example of the output:
$ sudo systemctl status x42node.service ● x42node.service - x42 Node Loaded: loaded (/etc/systemd/system/x42node.service; enabled; vendor preset: enabled) Active: active (running) since Thu 2019-01-24 15:47:55 UTC; 14s ago Main PID: 5456 (dotnet) Tasks: 23 (limit: 1112) CGroup: /system.slice/x42node.service └─5456 /usbin/dotnet /home/darthnoodle/x42node/x42.x42D.dll Jan 24 15:48:09 x42staking x42node[5456]: Batch Size: 0 Mb (0 headers) Jan 24 15:48:09 x42staking x42node[5456]: Cache Size: 0/50 MB Jan 24 15:48:09 x42staking x42node[5456]: Jan 24 15:48:09 x42staking x42node[5456]: =======Mempool======= Jan 24 15:48:09 x42staking x42node[5456]: MempoolSize: 0 DynamicSize: 0 kb OrphanSize: 0 Jan 24 15:48:09 x42staking x42node[5456]: Jan 24 15:48:09 x42staking x42node[5456]: info: Stratis.Bitcoin.Connection.ConnectionManagerBehavior[0] Jan 24 15:48:09 x42staking x42node[5456]: Peer '[::ffff:86.184.76.255]:52342' connected (outbound), agent 'x42:1.2.13 (70012)', height 213920 Jan 24 15:48:09 x42staking x42node[5456]: info: Stratis.Bitcoin.Connection.ConnectionManagerBehavior[0] Jan 24 15:48:09 x42staking x42node[5456]: Peer '[::ffff:86.184.76.255]:52342' offline, reason: 'Receiving cancelled.'. All node screen output can be found in the /valog/syslog file. 

Step 4 - Setup a New Wallet

With the Node running, we now need to setup and/or restore a wallet!
Everything will be performed through the API’s, however by default these API’s are listening on localhost (127.0.0.1), if you are connecting in remotely then this would be a problem since you cant hit that IP. The solution, SSH TUNNEL!
Execute the following command on your local system:
ssh -L 42220:localhost:42220 @ 
This binds the local port (on your system) with 127.0.0.1:42220 on the remote system, once you have executed the command you can type the following address in your laptop/desktop’s web browser and be able to access the API’s:
http://127.0.0.1:42220/swaggeindex.html 
It should look something like this:
https://preview.redd.it/9lzeg3vob8d21.jpg?width=482&format=pjpg&auto=webp&s=b5d574998816056140d5d6de7b03c56772a892fe
To Create a new wallet, first we have to generate some mnemonic works (e.g. the seed), you can do that by going to the following API:
/api/Wallet/mnemonic 
Hit the “Try it out” button which then prompts you for 2 fields:
https://preview.redd.it/dvbdllfrb8d21.jpg?width=722&format=pjpg&auto=webp&s=766d14bafba6facbcd56d31c63c0012748e682e5
Enter “English” and I would recommend 24 words as this greatly increases the seed strength! Once that is done you hit execute and then scroll down to see the “Response Body”, this should contain the mnemonic which you are going to use to create the wallet! This looks something like below:
https://preview.redd.it/6p4q0rsub8d21.jpg?width=603&format=pjpg&auto=webp&s=44b9265626467a43ca670b134c4d28187f475c2e
THIS IS VERY IMPORTANT, BACKUP THIS MNEMONIC TO A SAFE SECURE LOCATION THAT IS ENCRYPTED!!!
So now we have our mnemonic, its time to generate the wallet, for this we need to use the API:
/api/Wallet/create
There are a number of parameters which are required in order to create a wallet:
WalletCreationRequest{ mnemonic string password* string passphrase* string name* string } 
It should be noted that the password and mnemonic are is the most important parts of this request where the “password” will encrypt the wallet and Is required to unlock it.
  • Hit the “Try it out” button
  • input the necessary data
  • Insert the mnemonic
  • Put a password & passphrase
  • “Name” is what your wallet will be called
It should look something like the following:
https://preview.redd.it/958ttfbxb8d21.jpg?width=603&format=pjpg&auto=webp&s=ce48336436ea4b469b5e87513da802de0bf444ee
Hit “Execute”, the “Loading” sign may spin for a few minutes while the wallet is created… once the wallet has been created the “Response Body” will return the mnemonic you have just used.. we now have a wallet!!
HOWEVER IT IS NOT LOADED INTO THE NODE JUST YET!
This is where we will now jump back out and to configure the node to automatically load the wallet and automatically start staking when it first loads.
AGAIN BACKUP YOUR MNEMONIC AND PASSWORD, MAKE SURE THEY ARE ENCRYPTED AND STORED SOMEWHERE SAFE!

Step 5 - Configure The x42 Daemon

Now we are going to modify the x42.conf file in order to automatically load our wallet and start staking 😊
First things first, lets stop our node by running the following command:
sudo systemctl stop x42node.service 
CD to the following folder and view its contents:
~/.x42node/x42/x42Main ls -lah 
within that folder there should be 2 files you are interested in:
-rw-r--r-- 1 darthnoodle darthnoodle 18K Jan 28 16:01 TestWallet.wallet.json -rw-rw-r-- 1 darthnoodle darthnoodle 3.1K Jan 24 15:25 x42.conf 
So TestWallet.wallet.json is our physical wallet that will be loaded, but for right now we want to modify the x42.conf file.. fire up your favourite text editor (if you use VI you’re a masochist)..
nano x42.conf 
The area we are interested in is the following:
####Miner Settings#### #Enable POW mining. #mine=0 #Enable POS. #stake=0 #The address to use for mining (empty string to select an address from the wallet). #mineaddress= #The wallet name to use when staking. #walletname= #Password to unlock the wallet. #walletpassword= #Maximum block size (in bytes) for the miner to generate. #blockmaxsize=1000000 #Maximum block weight (in weight units) for the miner to generate. #blockmaxweight=1000000 #Enable splitting coins when staking. #enablecoinstakesplitting=1 #Minimum size of the coins considered for staking, in satoshis. #minimumstakingcoinvalue=10000000 #Targeted minimum value of staking coins after splitting, in satoshis. #minimumsplitcoinvalue=10000000000 
Uncomment (remove the #) of the following lines and change their value:
stake=1 (changed to 1) walletname=TestWallet (changed to our Wallet Name) walletpassword=password123 (changed to the wallet password) 
save the file and exit back to the command prompt, now we shall restart the node with the following command:
sudo systemctl status x42node.service 
now the wallet is automatically loaded and ready for action!
YES I KNOW YOU HAVE PUT YOUR PASSWORD IN CLEARTEXT, THIS IS WHERE YOU SHOULD HARDEN YOUR BOX. IF THEY CAN GET TO THE POINT WHERE THEY CAN READ YOUR CONF FILE THEY CAN JUST GRAB YOUR WALLET AND BRUTEFORCE THE PASSWORD.
You can check its loaded by going back to the API and executing the following command:
/Dashboard 
Or execute the following command on the NODE:
curl -X GET "http://127.0.0.1:42220/Dashboard" -H "accept: application/json" 
both will produce the same output, if you scroll to the bottom you should see something like this:
======Wallets====== TestWallet/account 0, Confirmed balance: 0.00000000 Unconfirmed balance: 0.00000000 
This means the wallet is loaded and ready for action!!

Step 6 - Get Addresses

Next thing you are probably going to want is a receive address and to check the balance and TX history.. so lets start with getting an address!
Go to the following API:
/api/Wallet/unusedaddress 
Fill in the Wallet name which is “TestWallet” (in this example) and “account 0” (which is the first/default account):
https://preview.redd.it/ayri5jk0c8d21.jpg?width=602&format=pjpg&auto=webp&s=2d16bbb78da49c0125d24d0834c9454d702cb7a1
Hit execute and you should have an x42 address within the “Response Body”:

https://preview.redd.it/tmc495j3c8d21.jpg?width=349&format=pjpg&auto=webp&s=b00177f66a9e24c980d3c6d4e532a33cbf3fb0bc
BOOM… ok now we can receive funds! 😊

Step 7 - Check TX History

Go to the API and the following call:
/api/Wallet/history 
The 2 fields we are most concerned about are:
https://preview.redd.it/lw194af6c8d21.jpg?width=602&format=pjpg&auto=webp&s=27e264bc008879355ff5b9c50a0a5cb06f16e960
Input the name of the wallet and account you want to view the history of, then hit execute. The other fields can be black. This will return a list of TX’s that the wallet has received:
This should look like the following:
https://preview.redd.it/x1hgargac8d21.jpg?width=585&format=pjpg&auto=webp&s=4fd25f22772f4bcec523a6e82b321ae8146a2c75
There is an easier way of doing this, that doesn’t require you to be connected to your node.. especially if your only interested in viewing your staking rewards… THE EXPLORER!
Access the following URL:
https://explorer.x42.tech/address/ 
this will allow you to easily see all TX’s associated with this address, it should look something like below:
https://preview.redd.it/e480grscc8d21.jpg?width=601&format=pjpg&auto=webp&s=0f8a9ebc7944dfcc73f7df659bd839bb983ba90c
… and your done! By this point your node should be running, staking and you have an easy way to view transactions/rewards 😊


Step 8 - Connect The UI Wallet To A Headless Node

The UI utilises a combination of technologies, however the important part is the code attempts to access the x42 Node API on 127.0.0.1:42220.
So you have 2 options here:
  1. Download the Wallet Installers
  2. Compile The UI Yourselves
Pick the option that best suits you given the pros/cons below:
Option 1 - Pro's/Cons
Pro's
  • If you use the installer, its quick and easy.
Cons
  • This also installs an x42 node on your system which runs when the UI loads.
  • If you dont setup an SSH tunnel before running the wallet the local node will bind to the port and the tunnel wont work.. you will be connecting to the local wallet!!
Option 2 - Pro's/Cons
Pro's
  • You only run the UI, the x42 node is not installed
  • you dont have a superfluous node running, downloading blocks on your local system
Cons
  • Time Consuming
  • Have to download dependencies and manually compile the code

Pre-Requirement - Needed For Both Options!!
As previously mentioned, the UI attempts to access the API's on 127.0.0.1:42220, however our node isnt running on our local system. IN ORDER TO GET IT WORKING YOU NEED TO HAVE AN SSH TUNNEL, THIS TUNNEL NEEDS TO REMAIN ACTIVE WHENEVER YOU WANT TO ACCESS THE WALLET.
this can be done by executing the following command:
ssh -L 42220:localhost:42220 @ 


Step 8 - [Option 1 - Use Installer] Connect The UI Wallet To A Headless Node

Download and install the UI/Wallet & Node from:
https://github.com/x42protocol/X42-FullNode-UI/releases

DO NOT RUN THE WALLET YET!
Those of us who dont want to run a local node and just want the UI, execute the following commands (as an administrator):
cd C:\Program Files\x42 Core\resources\daemon\ ren x42.x42D.exe x42.x42D.exe.bak 
The above is with Windows, if your are in *NIX then locate the daemon and rename it (i will update how to do that/where to find it shortly)
Setup the SSH tunnel as outlined above, Execute the wallet and it will load, however you will see an exception:

https://preview.redd.it/9os5h8q7scd21.jpg?width=550&format=pjpg&auto=webp&s=ac45ed7bc987917142075c61fb486e7d71f820d1
dont worry, this is just the wallet trying to execute/start the x42 node which we dont want, if all works according to plan.. after you click "OK" you should now be presented with the wallet UI and have the option to select what wallet you would like to load:

https://preview.redd.it/hnyt0b4mscd21.jpg?width=958&format=pjpg&auto=webp&s=a47df710a804375d8363ffcd77d1ede2862b9b4d
... DONE!

Step 8 - [Option 2 - Build/Compile UI Only] Connect The UI Wallet To A Headless Node ###BROKEN

THIS IS STILL A WORK IN PROGRESS, THE ELECTRON BUILD DOESNT WANT TO COMPILE BECAUSE SOME CODE IS MANGLED SOMEWHERE!!

Ok, this is the fun bit! .. we need to install the following dependencies. these instructions are written for a Windows system but it should be easy enough to perform the same on a *NIX system.
Install Dependencies
In order to build the wallet UI, you need to install the following components:
  • git
  • NodeJS
  • Electron Builder
First thing you need to do is install git, so download and install the package:
https://gitforwindows.org/
Next you need to install NodeJS, download and install the package:
https://nodejs.org/en/download/
Next we need to install the node package manager:
npm install npx –verbose 
next we need to make sure we have Visual Studio build tools and Python (2.7) installed, this can be done by executing the following (AS AN ADMINISTRATOR!):
npm install -g --production windows-build-tools 
this will install the necessary tools to build C#/C++ code and python 2.7, this could take some time! When its done you should have something like the following;

https://preview.redd.it/5ekfy5g1kcd21.jpg?width=490&format=pjpg&auto=webp&s=f65196dee6f78f2ececec5ee8b5df1044d68f635

Build & Install - Windows
Create a temp folder to navigate to a folder where you want to download the GIT repository, execute the following command:
git clone https://github.com/x42protocol/X42-FullNode-UI.git 
This will clone the repository into the folder, it will only clone the wallet and not the Node source! now lets CD into the folder and build the UI:
cd X42-FullNode-UI\FullNode.UI npm install 
This will download and install all dependencies (can take a while), at the end you should see something like..

https://preview.redd.it/0zfbfxa8kcd21.jpg?width=601&format=pjpg&auto=webp&s=438d072a6ab2bc7a3d84a8dfe773968acc762bc7
Now the stock UI has a number of third-party libraries which contain some vulnerabilities, being a security conscious person, ive also run:
npm audit fix 
when this is done, we have fixed most of the package vulnerabilities 😊 We also get a complaint about the typescript library being too new for the version of angular in use, so run the following command to install the additional dependency:
npm install [email protected]">=2.4.2 <2.7.0" 
now its time to build the UI, execute the following:
npm run build:prod 
once complete you should see something like the following..

https://preview.redd.it/56vf9zfckcd21.jpg?width=601&format=pjpg&auto=webp&s=31b72daff9ab5001843cba529a7bd38c76fd099d
Next its time to compile the electron binary, it should be noted that the build/package process utilises AppVoyer which is not installed and if you attempt to build right now you will get the following error:
cannot expand pattern "${productName}-v${version}-setup-${os}-${env.arch}.${ext}": env arch is not defined. 
To fix this we need to modify the build file, this is a quick one liner that can do it:
powershell -Command "(gc electron-builder.json) -replace 'env.arch', 'arch' | Out-File electron-builder.json" 
Essentially the offending line for Windows is..
"artifactName": "${productName}-v${version}-setup-${os}-${env.arch}.${ext}" 
The build cannot resolve “env.arch”, so the above one liner replaces “env.arch” with “arch” which works 😊
execute the following command:
npx electron-builder build --windows --x64 
At present i get the following error, no matter what i do.. and ive ran out of time to go hunting about.. if anyone has any ideas on how to fix then please post in here or message me on discord:

https://preview.redd.it/t66rtuqdtcd21.jpg?width=918&format=pjpg&auto=webp&s=a3f1a5ff682586348909c67645ca7ae9454922ff


Happy staking!

If you found this post helpful, then buy me a beer and send a donation to XQXeqrNFad2Uu7k3E9Dx5t4524fBsnEeSw
submitted by D4rthNoodle to x42 [link] [comments]

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