FREE!! Mega Bitcoin Mining Software 2019 Fully Registered

IQ.cash smart trading and mining

IQ.cash smart trading and mining
https://preview.redd.it/z0xjotzxta451.png?width=724&format=png&auto=webp&s=a0c223a017dd58aa54d506e51d041f5820db4a3b
Everyone from time to time has an interest in entering into a variety of investments with the aim of earning income from their home or comfort as long as they do not have to go through an inefficient employment system. This is the result of technological developments around, and to achieve this, many fall victim to con artists who promise a platform to get a comfortable income. Today I will introduce the ICO IQ cash project, one of the PLATFORM THAT ALLOWS YOU TO GET IN YOUR COMFORT.

What is IQ cash

IQ Cash is a cryptocurrency that may be used to run and increase further exposure to what has been offered. Making it is to remove from where to stop because it has been made and decided to go further because it was not possible. IQ can be used to get a place that has to be part of this trend, even if we are looking for an open place where investors can do the same with other investors. The aim is to give everyone not agreement about most and at least ROI in 300% or more of you in passive form. The IQCash company is truly unique because it will allow users to get the maximum return on investment. IQ cash is a company that will be able to combine the best and most perfect opportunities to lead exchanges in the cryptocurrency market. With IQ network Masternode you can avoid a variety of situations, problems, and unusual problems, and such a process will eliminate any deficiencies. The IQCash platform is also suitable for traders who already have experience in their activities, and of course for novice traders who have just entered the door of buying and selling crypto. No one will experience problems, everyone will only admire sales using IQCash. Learn more — http://iq.cash.

Why I chose to take a position on IQ. Cash?

Because there are many kinds of benefits for investors. except for profits up to 300%, I will be able to introduce all profits to investors. 1. Security Cryptocurrency now has a variant of active users in the world and also the number is growing rapidly! User accounts cannot be blocked, and funds cannot be accessed by anyone but the owner. 2.MASTERNODE Iq. Cash uses the consensus of the PoW algorithm with the support of the Masternode system. This makes the project economically attractive to mine 43% and provides 57% of passive income for Masternode holders. Masternode provides network integrity, transaction anonymity, and transaction speed. ways to get Masternode: You must take the position of 3000 IQ. 3. ANONIMITY The anonymity of transactions in the system is provided by the PrivateSend algorithm. Users can trust the system completely. they don’t need to worry about third-party access to data because the system encrypts data securely when transferring and receiving assets. 4. ASIC RESISTANCE Technology that solves problems accelerates the expansion of network complexity significantly when using ASIC (compared to CPU usage). IQ Cash Network uses the NeoScrypt algorithm to solve this problem. 5. TRANSACTION speed High-speed transactions are guaranteed by InstantSend data exchange across networks. The transaction time is about 5 seconds. 6. IQ Network decentralized. Cash implies weaknesses to create sites that combine the dominant influence on other network members. Effects on coins that are excluded due to their release are prohibited, and extra emission is not provided.

How to get an annual profit of 300%.


https://preview.redd.it/updhrmtzta451.png?width=793&format=png&auto=webp&s=eccc7d14b5d2e479f5d1ed2de84d14bfc72b0742
  1. Buy 3,000 IQ or better 3001 because 1 is spent on commission transactions.
  2. Download the Files application (Android or iOS) for mobile devices Open IQ. Cash Coin Purses in the application.
  3. Enter 3,001 IQ in the wallet and create a MasterNode server and deposit. Pay for hosting service providers on Flits.
  4. You will be charged EUR 1.99 per month, get profit and spend on your needs or create the next MasterNode to extend profits in line with the number of MasterNode!

How do I buy cash IQ

Go to the acquisition page and you will see an open window where you will pay the amount of coins you want to shop for. You don’t need to worry about the next steps because we will arrange the rest by buying IQ coins. Cash and FLS (to close Flits services) from the exchange.
  1. Fill in «IQ wallet address» and «FLS wallet address» in the Flits application.
  2. get a package. One package includes 3000 IQ. Cash and Bitcoin services for Flits for five months. When the cash transfer is complete, open the IQ-MasterNode window and make it comparable to the coins purchased (3000 IQ for 1 MasterNode).
  3. activate MasterNode and get profit. You will follow the current exchange rate on the Flits application or with any crypto trading coins.

Wallets and Exchanges:

The IQ cryptocurrency wallet is available on all three Windows, Mac and Linux platforms.

Token Information:

• Algorithm: PoW, NeoScrypt (ASIC resistance) • Block time: 120 seconds • Prizes per block: 25 IQ • Block Block Reward Distribution: 57% to Masternodes and 43% to Miners, both taken from the formula (Reward-6%), where 6% is reserved for the DAO system • Block rewards can be sliced 12% every year • Max coins: 56 900,000 IQ • Premine: 7 900 000 IQ • Mining within 25 years

Conclusion

IQ.cash has studied the crypto market well enough to draw the model. This uses the mining system and MasterNode. The mining protocol will attract contributors exponentially while MasterNode will help ensure network speed, governance, and sustainability. Because MasterNode is also a cryptocurrency node, becoming a MasterNode on the IQ.cash system requires an investment commitment. This is a way to make a profit in this system. Investment is rewarded with a commission for each trade made by the system. This will help ensure that enough users try to become a MasterNode and thus make a profit without having to leave the comfort of their home.

FOR MORE INFORMATION ABOUT IQ.CASH:

Website: https://iq.cash/ Whitepaper: https://iq.cash/iqcash_whitepaper.pdf Telegram: https://t.me/IQ_cash Twitter: https://twitter.com/IQ_Crypto Bitcointalk: https://bitcointalk.org/index.php?topic=4360591 YouTube: https://www.youtube.com/finexpo Github: https://github.com/IQ-Cash/iqcash/releases Disputes: https://discord.gg/qekuX6r Ann Thread: https://bitcointalk.org/index.php?topic=5240221.0 Explorer: https://explorer.iq.cash Mining Pool: https://pool.iq.cash Bithumb Contest: https://support.bithumb.pro/hc/ru/articles/360046055014--Event-100-000-IQ-Grand-Prize-Pool
Username : faxmon Link : https://bitcointalk.org/index.php?action=profile;u=173709
I.Q cash wallet : QU5m19f7AVY99cMVzU2CYLoAV15FRMxuLY
submitted by kriptaannarhist to u/kriptaannarhist [link] [comments]

IQ Cash: make 300% yearly profit

IQ Cash: make 300% yearly profit

https://preview.redd.it/gowo06cpqry41.jpg?width=680&format=pjpg&auto=webp&s=8cb2b1ccd00936eede584a566e0df93368e0f252
IQ.cash is a unique global platform on the blockchain, created both for investors and traders and miners. The main objective of the platform is to provide real-time, anonymous payments and real-time investments for crypto enthusiasts.
The IQ.cash project team has already developed for their investors the IQ Masternode network that they use. Also, the IQ coin is presented on such well-known exchanges as HitBTC, BitHumb Glogal, P2PB2B, CoinsBit, BitForex, CREX24 and Mercatox. Therefore, traders can easily trade it! If an investor has more than 3000 IQ on his balance sheet, then he can receive passive income 57% of the block, miners, in turn, receive 43% of the block. We still have 6%, which are reserved for DAO (decentralized autonomous organizations), that is, they are used to invest, for example, in ICO projects, websites, trading bots, and improving the entire IQ ecosystem . cash and so on. All of these unique features can help make the IQ.cash platform popular around the world.

https://preview.redd.it/qq7jq59xqry41.png?width=640&format=png&auto=webp&s=1f2bf849bbbe65d199a858e595acae2cb8153cc5
Now I am going to share with you the concept which our company has come up with for IQ.cash crypto coin. Its mechanism was developed to share the profit between miners as a reward for the transactions operated by IT specialists and MasterNode owners with 3,000 IQ.cash deposit as a commission for assisting the server system by investing in it. This is simply how the coin has been programmed.

5 steps to make 300% yearly profit

  • Purchase 3,000 IQ or better 3,001 as 1 will be spent on the transaction commission
  • Download the Flits App (Android or IOS) for the mobile device
  • Open an IQ.cash coin wallet in the app
  • Put 3,001 IQ into the wallet and create a MasterNode server and a deposit
  • Pay the hosting provider service fee at Flits. It will cost you EUR 1.99 per month

https://preview.redd.it/dprjus71rry41.jpg?width=1213&format=pjpg&auto=webp&s=65a9e0c01257821bf6299a6f5ef0cb2d7e54753a
IQ.cash coin was created the way so the profit is split in proportion of 57% and 43% between MasterNode (server with deposit) owners and miners accordingly. Additional 6% DAO is reserved to be either shared with people helping to develop the IQ.cash project or to simply dissolve once a month.
What are MasterNodes created for? To simplify, those are assistant servers which let IQ.cash coin to operate the payments inside the blockchain system. To create such a server, the owner must ‘rent’ it from the hoster. Its cost might vary from US $1 to US $4 per month. You must have a 3,000 IQ deposit to make the investment work. The deposit will be blocked by the system, so starting this very moment the system is adding the commission for your assistance to the project which can be spent or used to create new deposits and servers. One server and one deposit form a MasterNode!
In case you are not interested in a profit you can unblock the deposit and trade it at any of seven exchanges where our coins are used. Currently the profit is 300% a year but the bigger MasterNode is, the smaller the commission becomes as the reward is limited and splits equally between all the participating investors. The more people are willing to make deposits, the higher the price of the coin rises at the exchange, so the more profit it makes.
Get the profit and spend it on your needs or create the next MasterNode to increase the profit accordingly to the number of MasterNodes!
It is easier than it seems and you will get the profit bigger than any investment can provide. People really do that for a living!

And now let's get into how you can purchase it.

👉Go to the buy page and you will see the window opening where you can to pay for the amount of coins you would like to purchase. You don't have to worry about the following steps as we will manage the rest by buying IQ.cash and FLS coins (to cover the Flits service) from the exchange.
  • Fill in the fields «IQ wallet address» and «FLS wallet address» in the Flits app
  • Pay for the package. One package includes both 3000 IQ.cash and Bitcoin for five months of Flits service. The moment the money transfer is complete, open the window IQ – MasterNode and create them proportionally to coins purchased (3000 IQ for 1 MasterNode)
  • Switch on the MasterNode and get the profit. You can follow the current rate in the Flits App or at any crypto exchange trading IQ.cash coins:
If You don't understand? This link will help you: 👉 Open the step-by-step guide to creating a IQ.Cash Masternode.
What did I like about this project? Yes, almost everything. Here I did not hear the promises of the Golden Mountains when participating in the project, which many others are doing in order to only attract investors. Perhaps this is why this project remained in the shadow of upstarts and continued to work, to bring its beginnings to its logical conclusion. And now, when everything works as an ideal mechanism, the team decided to declare itself as a full-fledged player in this field. And this is very correct, since such projects with a good reputation and a finished product can be counted on the fingers of one hand.
For more information about IQ.CASH visit:
Website: https://iq.cash/
Discord: https://discord.gg/qekuX6r
Github: https://github.com/IQ-Cash/iqcash/releases
Youtube: https://www.youtube.com/finexpo
ANN thread: https://bitcointalk.org/index.php?topic=4360591
Twitter: https://twitter.com/IQ\_Crypto
Telegram: https://t.me/IQ\_cash
Wallets: https://iq.cash/
Explorer: https://explorer.iq.cash/
AUTHOR:
BITCOINTALK USERNAME: I Am Man
BITCOINTALK PROFILE: https://bitcointalk.org/index.php?action=profile;u=2734184
submitted by Manlog305 to ICOAnalysis [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]

Subreddit Stats: btc top posts from 2019-01-06 to 2020-01-05 11:19 PDT

Period: 363.85 days
Submissions Comments
Total 1000 86748
Rate (per day) 2.75 237.19
Unique Redditors 317 7747
Combined Score 194633 356658

Top Submitters' Top Submissions

  1. 31014 points, 162 submissions: Egon_1
    1. Vitalik Buterin to Core Maxi: “ok bitcoiner” .... (515 points, 206 comments)
    2. These men are serving life without parole in max security prison for nonviolent drug offenses. They helped me through a difficult time in a very dark place. I hope 2019 was their last year locked away from their loved ones. FreeRoss.org/lifers/ Happy New Year. (502 points, 237 comments)
    3. "It’s official Burger King just accepted Bitcoin Cash and GoC token as a payment option in Slovenia." (423 points, 112 comments)
    4. "HOLY SATOSHI! 😱😱 I did it! A smart card that produces valid BitcoinCash signatures. Who would love to pay with a card—to a phone?? Tap took less than a second!👟..." (368 points, 105 comments)
    5. Chrome 'Has Become Surveillance Software. It's Time to Switch' -> Brave to support BCH! (330 points, 97 comments)
    6. Gavin Andresen (2017): "Running a network near 100% capacity is irresponsible engineering... " (316 points, 117 comments)
    7. "Evidently @github has banned all the Iranian users without an ability for them to download their repositories. A service like Github must be a public good and must not be controlled by a centralized entity. Another great example of why we as a society need to make web3 a reality" (314 points, 117 comments)
    8. Roger Ver: "Bitcoin Cash acceptance is coming to thousands of physical shops in Korea" (313 points, 120 comments)
    9. Paul Sztorc: “Will people really spend $70-$700 to open/modify a lightning channel when there's an Altcoin down the street which will process a (USD-denominated) payment for $0.05 ? Many people seem to think yes but honestly I just don't get it” (306 points, 225 comments)
    10. Food For Thought (303 points, 105 comments)
  2. 29021 points, 157 submissions: MemoryDealers
    1. Bitcoin Cash is Lightning Fast! (No editing needed) (436 points, 616 comments)
    2. Brains..... (423 points, 94 comments)
    3. Meanwhile in Hong Kong (409 points, 77 comments)
    4. Ross Ulbricht has served 6 years in federal prison. (382 points, 156 comments)
    5. Just another day at the Bitcoin Cash accepting super market in Slovenia. (369 points, 183 comments)
    6. Why I'm not a fan of the SV community: My recent bill for defending their frivolous lawsuit against open source software developers. (369 points, 207 comments)
    7. History Reminder: (354 points, 245 comments)
    8. It's more decentralized this way. (341 points, 177 comments)
    9. The new Bitcoin Cash wallet is so fast!!!!! (327 points, 197 comments)
    10. The IRS wants to subpoena Apple and Google to see if you have downloaded crypto currency apps. (324 points, 178 comments)
  3. 6909 points, 37 submissions: BitcoinXio
    1. Tim Pool on Twitter: “How the fuck are people justifying creating a world like the one's depicted in Fahrenheit 451 and 1984? You realize that censorship and banning information was a key aspect of the dystopian nightmare right?” (435 points, 75 comments)
    2. The creator of the now famous HODL meme says that the HODL term has been corrupted and doesn’t mean what he intended; also mentions that the purpose of Bitcoin is to spend it and that BTC has lost its value proposition. (394 points, 172 comments)
    3. Erik Voorhees on Twitter: “I wonder if you realize that if Bitcoin didn’t work well as a payment system in the early days it likely would not have taken off. Many (most?) people found the concept of instant borderless payments captivating and inspiring. “Just hold this stuff” not sufficient.” (302 points, 66 comments)
    4. Bitfinex caught paying a company to astroturf on social media including Reddit, Twitter, Medium and other platforms (285 points, 86 comments)
    5. WARNING: If you try to use the Lightning Network you are at extremely HIGH RISK of losing funds and is not recommended or safe to do at this time or for the foreseeable future (274 points, 168 comments)
    6. Craig Wright seems to have rage quit Twitter (252 points, 172 comments)
    7. No surprise here: Samson Mow among other BTC maxi trolls harassed people to the point of breakdown (with rape threats, etc) (249 points, 85 comments)
    8. On Twitter: “PSA: The Lightning Network is being heavily data mined right now. Opening channels allows anyone to cluster your wallet and associate your keys with your IP address.” (228 points, 102 comments)
    9. btc is being targeted and attacked, yet again (220 points, 172 comments)
    10. Brian Armstrong CEO of Coinbase using Bitcoin Cash (BCH) to pay for food, video in tweet (219 points, 66 comments)
  4. 6023 points, 34 submissions: money78
    1. BSV in a nutshell... (274 points, 60 comments)
    2. There is something going on with @Bitcoin twitter account: 1/ The URL of the white paper has been changed from bitcoin.com into bitcoin.org! 2/ @Bitcoin has unfollowed all other BCH related accounts. 3/ Most of the posts that refer to "bitcoin cash" have been deleted?!! Is it hacked again?! (269 points, 312 comments)
    3. "Not a huge @rogerkver fan and never really used $BCH. But he wiped up the floor with @ToneVays in Malta, and even if you happen to despise BCH, it’s foolish and shortsighted not to take these criticisms seriously. $BTC is very expensive and very slow." (262 points, 130 comments)
    4. Jonathan Toomim: "At 32 MB, we can handle something like 30% of Venezuela's population using BCH 2x per day. Even if that's all BCH ever achieved, I'd call that a resounding success; that's 9 million people raised out of poverty. Not a bad accomplishment for a hundred thousand internet geeks." (253 points, 170 comments)
    5. Jonathan Toomim: "BCH will not allow block sizes that are large enough to wreak havoc. We do our capacity engineering before lifting the capacity limits. BCH's limit is 32 MB, which the network can handle. BSV does not share this approach, and raises limits before improving actual capacity." (253 points, 255 comments)
    6. What Bitcoin Cash has accomplished so far 💪 (247 points, 55 comments)
    7. Which one is false advertising and misleading people?! Bitcoin.com or Bitcoin.org (232 points, 90 comments)
    8. A message from Lightning Labs: "Don't put more money on lightning than you're willing to lose!" (216 points, 118 comments)
    9. Silk Road’s Ross Ulbricht thanks Bitcoin Cash’s [BCH] Roger Ver for campaigning for his release (211 points, 29 comments)
    10. This account just donated more than $6600 worth of BCH via @tipprbot to multiple organizations! (205 points, 62 comments)
  5. 4514 points, 22 submissions: unstoppable-cash
    1. Reminder: bitcoin mods removed top post: "The rich don't need Bitcoin. The poor do" (436 points, 89 comments)
    2. Peter R. Rizun: "LN User walks into a bank, says "I need a loan..." (371 points, 152 comments)
    3. It was SO simple... Satoshi had the answer to prevent full-blocks back in 2010! (307 points, 150 comments)
    4. REMINDER: "Bitcoin isn't for people that live on less than $2/day" -Samson Mow, CSO of BlockStream (267 points, 98 comments)
    5. "F'g insane... waited 5 hrs and still not 1 confirmation. How does anyone use BTC over BCH BitcoinCash?" (258 points, 222 comments)
    6. Irony:"Ave person won't be running LN routing node" But CORE/BTC said big-blocks bad since everyone can't run their own node (256 points, 161 comments)
    7. BitPay: "The Wikimedia Foundation had been accepting Bitcoin for several years but recently switched pmt processors to BitPay so they can now accept Bitcoin Cash" (249 points, 61 comments)
    8. FreeTrader: "Decentralization is dependent on widespread usage..." (195 points, 57 comments)
    9. The FLIPPENING: Fiat->OPEN Peer-to-Peer Electronic Cash! Naomi Brockwell earning more via BitBacker than Patreon! (193 points, 12 comments)
    10. LN Commentary from a guy that knows a thing or 2 about Bitcoin (Gavin Andresen-LEAD developer after Satoshi left in 2010) (182 points, 80 comments)
  6. 3075 points, 13 submissions: BeijingBitcoins
    1. Last night's BCH & BTC meetups in Tokyo were both at the same restaurant (Two Dogs). We joined forces for this group photo! (410 points, 166 comments)
    2. Chess.com used to accept Bitcoin payments but, like many other businesses, disabled the option. After some DMs with an admin there, I'm pleased to announce that they now accept Bitcoin Cash! (354 points, 62 comments)
    3. WSJ: Bitfinex Used Tether Reserves to Mask Missing $850 Million, Probe Finds (348 points, 191 comments)
    4. Bitcoiners: Then and Now [MEME CONTEST - details in comments] (323 points, 72 comments)
    5. I'd post this to /Bitcoin but they would just remove it right away (also I'm banned) (320 points, 124 comments)
    6. So this is happening at the big protest in Hong Kong right now (270 points, 45 comments)
    7. /Bitcoin mods are censoring posts that explain why BitPay has to charge an additional fee when accepting BTC payments (219 points, 110 comments)
    8. The guy who won this week's MillionaireMakers drawing has received ~$55 in BCH and ~$30 in BTC. It will cost him less than $0.01 to move the BCH, but $6.16 (20%) in fees to move the BTC. (164 points, 100 comments)
    9. The Bitcoin whitepaper was published 11 years ago today. Check out this comic version of the whitepaper, one of the best "ELI5" explanations out there. (153 points, 12 comments)
    10. Two Years™ is the new 18 Months™ (142 points, 113 comments)
  7. 2899 points, 18 submissions: jessquit
    1. Oh, the horror! (271 points, 99 comments)
    2. A few days ago I caught flak for reposting a set of graphs that didn't have their x-axes correctly labeled or scaled. tvand13 made an updated graph with correct labeling and scaling. I am reposting it as I promised. I invite the viewer to draw their own conclusions. (214 points, 195 comments)
    3. Do you think Bitcoin needs to increase the block size? You're in luck! It already did: Bitcoin BCH. Avoid the upcoming controversial BTC block size debate by trading your broken Bitcoin BTC for upgraded Bitcoin BCH now. (209 points, 194 comments)
    4. Master list of evidence regarding Bitcoin's hijacking and takeover by Blockstream (185 points, 113 comments)
    5. PSA: BTC not working so great? Bitcoin upgraded in 2017. The upgraded Bitcoin is called BCH. There's still time to upgrade! (185 points, 192 comments)
    6. Nobody uses Bitcoin Cash (182 points, 88 comments)
    7. Double-spend proofs, SPV fraud proofs, and Cashfusion improvements all on the same day! 🏅 BCH PLS! 🏅 (165 points, 36 comments)
    8. [repost] a reminder on how btc and Bitcoin Cash came to be (150 points, 102 comments)
    9. Holy shit the entire "negative with gold" sub has become a shrine devoted to the guilded astroturfing going on in rbtc (144 points, 194 comments)
    10. This sub is the only sub in all of Reddit that allows truly uncensored discussion of BTC. If it turns out that most of that uncensored discussion is negative, DON'T BLAME US. (143 points, 205 comments)
  8. 2839 points, 13 submissions: SwedishSalsa
    1. With Bitcoin, for the first time in modern history, we have a way to opt out. (356 points, 100 comments)
    2. In this age of rampant censorship and control, this is why I love Bitcoin. (347 points, 126 comments)
    3. The crypto expert (303 points, 29 comments)
    4. Satoshi reply to Mike Hearn, April 2009. Everybody, especially newcomers and r-bitcoin-readers should take a step back and read this. (284 points, 219 comments)
    5. Bitcoin Cash looking good lately. (235 points, 33 comments)
    6. Roger Ver bad (230 points, 61 comments)
    7. History of the BTC scaling debate (186 points, 54 comments)
    8. MFW i read Luke Jr wants to limit BTC blocks to 300k. (183 points, 116 comments)
    9. Meanwhile over at bitcoinsv... (163 points, 139 comments)
    10. Listen people... (155 points, 16 comments)
  9. 2204 points, 10 submissions: increaseblocks
    1. China bans Bitcoin again, and again, and again (426 points, 56 comments)
    2. China bans Bitcoin (again) (292 points, 35 comments)
    3. Bitcoin Cash Network has now been upgraded! (238 points, 67 comments)
    4. So you want small blocks with high fees to validate your own on chain transactions that happen OFF CHAIN? (212 points, 112 comments)
    5. It’s happening - BTC dev Luke jr writing code to Bitcoin BTC codebase to fork to lower the block size to 300kb! (204 points, 127 comments)
    6. Former BTC maximalist admits that maxi's lied cheated and stealed to get SegWit and Lightning (201 points, 135 comments)
    7. Just 18 more months to go! (172 points, 86 comments)
    8. Bitcoin Cash ring - F*CK BANKS (167 points, 51 comments)
    9. LTC Foundation chat leaked: no evidence of development, lack of transparency (155 points, 83 comments)
    10. A single person controls nearly half of all the Lightning Network’s capacity (137 points, 109 comments)
  10. 2138 points, 12 submissions: JonyRotten
    1. 'Craig Is a Liar' – Early Adopter Proves Ownership of Bitcoin Address Claimed by Craig Wright (309 points, 165 comments)
    2. 200,000 People Have Signed Ross Ulbricht's Clemency Petition (236 points, 102 comments)
    3. Street Artist Hides $1,000 in BTC Inside a Mural Depicting Paris Protests (236 points, 56 comments)
    4. Craig Wright Ordered to Produce a List of Early Bitcoin Addresses in Kleiman Lawsuit (189 points, 66 comments)
    5. Ross Ulbricht Clemency Petition Gathers 250,000 Signatures (163 points, 24 comments)
    6. Ross Ulbricht Letter Questions the Wisdom of Imprisoning Non-Violent Offenders (160 points, 50 comments)
    7. Expert Witness in Satoshi Case Claims Dr Wright's Documents Were Doctored (155 points, 44 comments)
    8. California City Official Uses Bitcoin Cash to Purchase Cannabis (151 points, 36 comments)
    9. Money Transmitter License Not Required for Crypto Businesses in Pennsylvania (141 points, 9 comments)
    10. McAfee to Launch Decentralized Token Exchange With No Restrictions (137 points, 35 comments)

Top Commenters

  1. jessquit (16708 points, 2083 comments)
  2. Ant-n (7878 points, 1517 comments)
  3. MemoryDealers (7366 points, 360 comments)
  4. Egon_1 (6205 points, 1001 comments)
  5. 500239 (5745 points, 735 comments)
  6. BitcoinXio (4640 points, 311 comments)
  7. LovelyDay (4353 points, 457 comments)
  8. chainxor (4293 points, 505 comments)
  9. MobTwo (3420 points, 174 comments)
  10. ShadowOfHarbringer (3388 points, 478 comments)

Top Submissions

  1. The perfect crypto t-shirt by Korben (742 points, 68 comments)
  2. The future of Libra Coin by themadscientistt (722 points, 87 comments)
  3. when you become a crypto trader... by forberniesnow (675 points, 54 comments)
  4. A Reminder Why You Shouldn’t Use Google. by InMyDayTVwasBooks (637 points, 209 comments)
  5. Imagine if in 2000 Apple just sat around all day shit-talking Microsoft. Apple would have never gone anywhere. Apple succeeded because they learned from their mistakes, improved, and got better. BCH should do the same. by guyfawkesfp (552 points, 255 comments)
  6. Bitcoin made The Simpsons intro! Sorry for the potato quality by Johans_wilgat (521 points, 44 comments)
  7. Vitalik Buterin to Core Maxi: “ok bitcoiner” .... by Egon_1 (515 points, 206 comments)
  8. Can't stop won't stop by Greentoboggan (514 points, 78 comments)
  9. These men are serving life without parole in max security prison for nonviolent drug offenses. They helped me through a difficult time in a very dark place. I hope 2019 was their last year locked away from their loved ones. FreeRoss.org/lifers/ Happy New Year. by Egon_1 (502 points, 237 comments)
  10. Blockchain? by unesgt (479 points, 103 comments)

Top Comments

  1. 211 points: fireduck's comment in John Mcafee on the run from IRS Tax Evasion charges, running 2020 Presidential Campaign from Venezuela in Exile
  2. 203 points: WalterRothbard's comment in I am a Bitcoin supporter and developer, and I'm starting to think that Bitcoin Cash could be better, but I have some concerns, is anyone willing to discuss them?
  3. 179 points: Chris_Pacia's comment in The BSV chain has just experienced a 6-block reorg
  4. 163 points: YourBodyIsBCHn's comment in I made this account specifically to tip in nsfw/gonewild subreddits
  5. 161 points: BeijingBitcoins's comment in Last night's BCH & BTC meetups in Tokyo were both at the same restaurant (Two Dogs). We joined forces for this group photo!
  6. 156 points: hawks5999's comment in You can’t make this stuff up. This is how BTC supporters actually think. From bitcoin: “What you can do to make BTC better: check twice if you really need to use it!” 🤦🏻‍♂️
  7. 155 points: lowstrife's comment in Steve Wozniak Sold His Bitcoin at Its Peak $20,000 Valuation
  8. 151 points: kdawgud's comment in The government is taking away basic freedoms we each deserve
  9. 147 points: m4ktub1st's comment in BCH suffered a 51% attack by colluding miners to re-org the chain in order to reverse transactions - why is nobody talking about this? Dangerous precident
  10. 147 points: todu's comment in Why I'm not a fan of the SV community: My recent bill for defending their frivolous lawsuit against open source software developers.
Generated with BBoe's Subreddit Stats
submitted by subreddit_stats to subreddit_stats [link] [comments]

Staking — The New Way to Earn Crypto for Free

Staking — The New Way to Earn Crypto for Free

https://preview.redd.it/jpadsinyz3c41.png?width=616&format=png&auto=webp&s=c0dc410484430b863b0488727f92135f218edff2
Airdrops are so 2017, free money was fun while it lasted but now when someone says free money in crypto, the first thoughts are scams and ponzi schemes. But in 2020, there is a way to earn free money, in a legitimate, common practice, and logical manner — staking.
Staking is the core concept behind the Proof-of-Stake (PoS) consensus protocol that is quickly becoming an industry standard throughout blockchain projects. PoS allows blockchains to scale effectively without compromising on security and resource efficiency. Projects that incorporate staking include aelf, Dash, EOS, Cosmos, Cardano, Dfinity and many others.

https://preview.redd.it/luczupo004c41.png?width=616&format=png&auto=webp&s=2a2aba11c35c9962e42d1ea56b9e4f33532750ef

PoW — Why change

First, let’s look at some of the issues facing Proof-of-Work (PoW) consensus that led to the development of PoS.
  1. Excessive energy consumption — In 2017, many concerns were raised over the amount of electricity used by the bitcoin network (Largest PoW blockchain). Since then the energy consumption has increased by over 400%, to the point where 1 single transaction on this network has the same carbon footprint of 736,722 Visa transactions or consumes the same amount of electricity as over 20 U.S. households.
  2. Varying Electricity Costs — The profit of any miner on the network is tied to two costs, the initial startup cost to obtain the hardware and infrastructure, and more critically, the running cost of said equipment in relation to electricity usage. Electricity costs can vary from fractions of a cent per kWh to over 50 cents (USD) and in some cases it is free. When a user may only be earning $0.40 USD per hour then this will clearly rule out certain demographics based purely on electricity costs, reducing the potential for complete decentralization.
  3. Reduced decentralization — Due to the high cost of the mining equipment, those with large financial bases setup mining farms, either for others to rent out individual miners or entirely for personal gains. This results in large demographic hotspots on the network reducing the decentralized aspect to a point where it no longer accomplishes this aspect.
  4. Conflicted interests — The requirements of running miners on the network are purely based on having possession of the hardware, electricity and internet connection. There are no limits to the amount a miner can earn, nor do they need to hold any stake in the network, and thus there is very little incentive for them to vote on upgrades that may benefit the network but reduce their rewards.
I want to take this moment to mention a potential benefit to PoW that I have not seen anyone mention previously. It is a very loose argument so don’t take this to heart too strongly.
Consistent Fiat Injection — The majority of miners will be paying for their electricity in fiat currency. At a conservative rate of $0.1 USD per kWh, the network currently uses 73.12 TWh per year. This equates to an average daily cost of over $20 million USD. This means every day around $20 million of fiat currency is effectively being injected into the bitcoin network. Although this concept is somewhat flawed in the sense that the same amount of bitcoin will be released each day regardless of how much is spent on electricity, I’m looking at this from the eyes of the miners, they are reducing their fiat bags and increasing their bitcoin bags. This change of bags is the essence of this point which will inevitably encourage crypto spending. If the bitcoin bags were increased but fiat bags did not decrease, then there would be less incentive to spend the bitcoin, as would see in a staking ecosystem.

https://preview.redd.it/8dtqt6e204c41.png?width=631&format=png&auto=webp&s=065aedde87b55f0768968307e59e62a35eac949d

PoS Variations

Different approaches have been taken to tackle different issues the PoS protocol faces. Will Little has an excellent article explaining this and more in PoS, but let me take an excerpt from his piece to go through them:
  • Coin-age selection — Blockchains like Peercoin (the first PoS chain), start out with PoW to distribute the coins, use coin age to help prevent monopolization and 51% attacks (by setting a time range when the probability of being selected as a node is greatest), and implement checkpoints initially to prevent NoS problems.
  • Randomized block selection — Chains like NXT and Blackcoin also use checkpoints, but believe that coin-age discourages staking. After an initial distribution period (either via PoW or otherwise), these chains use algorithms to randomly select nodes that can create blocks.
  • Ethereum’s Casper protocol(s) — Being already widely distributed, Ethereum doesn’t have to worry about the initial distribution problem when/if it switches to PoS. Casper takes a more Byzantine Fault Tolerant (BFT) approach and will punish nodes by taking away (“slashing”) their stake if they do devious things. In addition, consensus is formed by a multi-round process where every randomly assigned node votes for a specific block during a round.
  • Delegated Proof-of-Stake (DPoS) — Invented by Dan Larimer and first used in Bitshares (and then in [aelf,] Steem, EOS, and many others), DPoS tackles potential PoS problems by having the community “elect” delegates that will run nodes to create and validate blocks. Bad behavior is then punished by the community simply out-voting the delegated nodes.
  • Delegated Byzantine Fault Tolerance (DBFT) — Similar to DPoS, the NEO community votes for (delegates) nodes, but instead of each node producing blocks and agreeing on consensus, only 2 out of 3 nodes need to agree on what goes in every block (acting more like bookkeepers than validators).
  • Tendermint — As a more sophisticated form of DBFT and a precursor to Casper, Jae Kwon introduced tendermint in 2014, which leverages dynamic validator sets, rotating leader elections, and voting power (i.e. weight) that is proportional to the self-funding and community allocation of tokens to a node (i.e. a “validator”).
  • Masternodes — First introduced by DASH, a masternode PoS system requires nodes to stake a minimum threshold of coins in order to qualify as a node. Often this comes with requirements to provide “service” to a network in the form of governance, special payment protocols, etc…
  • Proof of Importance (POI)NEM takes a slightly different approach by granting an “importance calculation” to masternodes staking at least 10,000 XEM. This POI system then rewards active nodes that act in a positive way over time to impact the community.
  • “Proof-of-X” — And finally, there is no lack of activity in the PoS world to come up with clever approaches and variants of staking (some are more elaborate than others). In addition to BFT protocols such as Honeybadger, Ouroboros, and Tezos, for further reading, also check out “Proof-of-”: Stake Anonymous, Storage, Stake Time, Stake Velocity, Activity, Burn, and Capacity.
https://preview.redd.it/n28a8n5404c41.png?width=604&format=png&auto=webp&s=0ea8827fd0458e768d4eb3a0a1fa88c984ba0a82

Earning Your Stake

In order to understand how one can earn money from these networks, I’ll break them down into 3 categories: Simple staking, Running nodes, and Voting.
Simple Staking - This is the simplest of the 3 methods and requires almost no action by the user. Certain networks will reward users by simply holding tokens in a specified wallet. These rewards are generally minimal but are the easiest way to earn.
Running a node - This method provides the greatest rewards but also requires the greatest action by the user and most likely will require ongoing maintenance. Generally speaking, networks will require nodes to stake a certain amount of tokens often amounting to thousands of dollars. In DPoS systems, these nodes must be voted in by other users on the network and must continue to provide confidence to their supporters. Some companies will setup nodes and allow users to participate by contributing to the minimum staking amount, with a similar concept to PoW mining pools.
Voting - This mechanism works hand in hand with running nodes in relation to DPoS networks. Users are encouraged to vote for their preferred nodes by staking tokens as votes. Each vote will unlock a small amount of rewards for each voter, the nodes are normally the ones to provide these rewards as a portion of their own reward for running a node.

Aelf’s DPoS system

The aelf consensus protocol utilizes a form of DPoS. There are two versions of nodes on the network, active nodes & backup nodes (official names yet to be announced). Active nodes run the network and produce the blocks, while the backup nodes complete minor tasks and are on standby should any active nodes go offline or act maliciously. These nodes are selected based upon their number of votes received. Initially the top 17 nodes will be selected as active nodes, while the next 100 will stand as the backup ones, each voting period each node may change position should they receive more or less votes than the previous period. In order to be considered as a node, one must stake a minimum amount of ELF tokens (yet to be announced).

https://preview.redd.it/47d3wqe604c41.png?width=618&format=png&auto=webp&s=062a6aa6186b826d400a0015d4c91fd1a4ed0b65
In order to participate as a voter, there is no minimum amount of tokens to be staked. When one stakes, their tokens will be locked for a designated amount of time, selected by the voter from the preset periods. If users pull their tokens out before this locked period has expired no rewards are received, but if they leave them locked for the entire time frame they will receive the set reward, and the tokens will be automatically rolled over into the next locked period. As a result, should a voter decide, once their votes are cast, they can continue to receive rewards without any further action needed.
Many projects have tackled with node rewards in order to make them fair, well incentivized but sustainable for everyone involved. Aelf has come up with a reward structure based on multiple variables with a basic income guaranteed for every node. Variables may include the number of re-elections, number of votes received, or other elements.
As the system matures, the number of active nodes will be increased, resulting in a more diverse and secure network.
Staking as a solution is a win-win-win for network creators, users and investors. It is a much more resource efficient and scalable protocol to secure blockchain networks while reducing the entry point for users to earn from the system.
submitted by Floris-Jan to aelfofficial [link] [comments]

Introduction and overview of the Bitcoin system

In relation to this post:
https://www.reddit.com/btc/comments/eupegk/technical_review_of_the_past_10_years_and_how_the/
We put together an introductory overview of the Bitcoin System. As this is intended to help increase public understanding of BTC and thus increase it's adoption. What will you learn from the text:
If you do decide to go through the text would love some feedback. Was it clear? Did you get any value from it? Anything that needs to be expanded on? - we are really excited about this project and hope to make it to the best of our abilities.
----

1 Introduction to the Bitcoin System

1.1 Introduction and General Description

There are many definitions and descriptions of Bitcoin. Some describe it as an innovative virtual or crypto currency, some as the system for peer-to–peer electronic cash payment transactions, and some others as decentralized platform and infrastructure for anonymous payment transactions using any type of crypto currency.
In this Report we will adopt the concept that the Bitcoin system is a payment system. It has its own features, its own currency, its own protocols and components, and with all that Bitcoin supports payment transactions. In other words, the core function of the Bitcoin system is to support payments between two parties – the party that makes a payment and the party that receives the payment.
Based on the original concept and the description of the Bitcoin [Bitcoin, 2016], “it is a decentralized digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: transaction management and money issuance are carried out collectively by the network”.
The system is decentralized since its supporting platform blockchain, comprises an infrastructure of multiple distributed servers, mutually linked by an instantaneous broadcasting protocol. Users perform transactions within the open and distributed community of registered users. Digital currency used in the system is not electronic form of fiat currency, but a special form of the currency generated and used only within the Bitcoin system. This concept is based on the notion that money can be interpreted as any object, or any sort of record, that is accepted as payment for goods and services and repayment of debts in a given country or socio-economic context. Bitcoin system is designed around the idea of using cryptography to control the creation and transfer of money, rather than relying on central authorities.
There are several important requirements when making any type of payment and with any currency. The best example of a “perfect” payment transaction that meets all these requirements is payment using cash over-the-counter. When a consumer pays to a merchant using cash over-the-counter, such transaction satisfies all requirements and expectations of both parties. First, the transaction is instantaneous, as the paper bill is transferred hand-to-hand, from the consumer to the merchant. The transaction is cheap, in fact there is no overhead charge to perform transaction, so the merchant receives the full amount. The transaction is irreversible, what is the property beneficial to merchants. The transaction is legal, as the merchant can verify the legality of the paper bill. And, finally, the transaction is anonymous for the consumer as he/she does not need to reveal his/her identity.
The only “problem” with cash over-the-counter is the cash itself, as using and handling cash has many disadvantages.
Bitcoin concept and system solves all issues and problems with the use of cash, but at the same time provides all advantages when performing transactions using digital and communication technologies. So, paying with Bitcoins is effectively payment transaction that uses “digital cash over-the-counter”. The concept of the Bitcoin system provides all advantages and benefits mentioned above with payments using cash over-the-counter, but eliminates the problems of using cash. That is the reason why Bitcoins are often referred to as “digital cash”.
One of significant features of payments using cash over-the-counter is that there are no third parties to participate or assist in the execution and validation of a transaction. This feature makes Bitcoin transactions very efficient and also very cheap to perform. Other types of todays payment systems, for instance using bank-to-bank account transfers or using bankcards, use many additional intermediate parties and use very complicated background infrastructure to validate and clear payment transactions. These infrastructures are complex to establish and operate, they are expensive, and they are vulnerable to attacks and penetrations by hackers. Bitcoin does not use such complex infrastructures, what is the reason that its transactions are efficient and cheap. An additional problem with third-party transaction players is that transaction parties must put the complete trust in all these parties without any means to verify their functionality, correctness, or security.
Bitcoin system uses public-key cryptography to protect the currency and transactions. Logical relationships between transaction parties is direct, peer-to-peer, and the process of validating transactions is based on cryptographic proof-of-work. When performing a transaction, the net effect is that certain amount of Bitcoins is transferred from one cryptographic address to another. Each user may have and use several addresses simultaneously. Each payment transaction is broadcast to the network of distributed transaction processing servers. These servers collect individual transactions, package them into blocks, and send them for validation.
Each block is cryptographically processed by the large number of so called “miners”. They each attempt to create cryptographic hash value that has special form. This is computationally very difficult and time-consuming task, therefore, it is very difficult to perform and repeat. Individual blocks are validated using cryptographic processing procedures that require substantial amount of work and computing power.
Approximately an hour or two after submitting the transaction for validation, each transaction is locked in time and by cryptographic processing by the massive amount of computing power that was used to complete the block. When the block is validated, it is added to the chain of all previous blocks, thus forming a public archive of all blocks and transactions in the system.
One of the most important problems with uncontrolled digital currency, where there are no third parties to validate and approve transactions, is so called double spending. Since the currency is digital, stored at user’s local workstations, in mobile phones, or on network servers, it can be easily copied and sent to multiple recipients multiple times.
Bitcoin system solves this problem with a very interesting approach. It is the first effective example of the solution for the double-spending problem without the need for assistance of any third party. Bitcoin solves this problem by keeping and distributing an archive of all transactions among all the users of the system via a peer-to-peer distribution network. Every transaction that occurs in the Bitcoin system is recorded in that public and distributed transactions ledger. Since the components in that ledger are blocks with transactions and the blocks are “chained” in time and in a cryptographic sequence, the ledger in the Bitcoin system is called blockchain.
That full blockchain of all transactions that were performed in the Bitcoin system before the specific transaction can be used to verify new transactions. The transactions are verified against the blockchain to ensure that the same Bitcoins have not been previously spent. This approach eliminates the double-spending problem. The essence of the verification procedure for a single transaction in fact is the test of the balance of the sending account. The test is very normal and natural: payment of a certain amount of the currency can be made only of the balance of the outgoing account is equal or larger than the payment amount. Current balance of an account is established by tracing all incoming and outgoing transactions for that account.
The procedure to verify the validity of individual transactions and to prevent double-spending is based on the use of special type of cryptographic protocol called public-key cryptography. With this type of cryptographic systems each user has two cryptographic keys. They are mutually related in the sense that, what ever the one key encrypts, the other key can decrypt. One of the two keys is a private key that is kept secret, and the other key is public key that can be shared with all other users in the system. When a user wants to make a payment to another user, the sender transfers certain amount of Bitcoins from his/her account to the account of the receiver. This action is performed by the sender by creating a payment message, called a “transaction,” which contains recipient’s public key – receiving address and payment amount. The transaction is cryptographically processed by the sender’s private key, the operation called digital signing, and as the result digital signature is created and appended to the transaction.
By using sender’s private key every user in the system can verify that the transaction was indeed created by the indicated sender, as his/her private key can successfully decrypt the content of the digital signature. The exchange is authentic, since the transaction was also cryptographically processed with the recipient’s public key, the operation which is called digital enveloping. This transformation guarantees that the transaction can be accepted and processed only by the holder of the corresponding private key, which is the intended recipient.
Every transaction, and thus the transfer of ownership of the specified amount of Bitcoins, is inserted, then time-stamped, and finally displayed in one “block” of the blockchain. Public-key cryptography ensures that all computers in the network have a constantly updated and verified record of all transactions within the Bitcoin network, which prevents double-spending and fraud.

1.2 The Concept and Features of the Bitcoin System

There are many concepts and even more operational payment systems today in the world. Some are standard paper–based, some are digital and network based. What makes Bitcoin unique and distinctive, compared with all other payment systems that are in use today, are several of its core features.
The first of them is that the system uses its own currency. The reason for using its own currency is to make the system independent of financial institutions as trusted third parties. The unit of the currency is called Bitcoin. The currency is so called crypto currency, because it is generated and used based on execution of certain cryptographic algorithms and protocols. Performing specific cryptographic protocols is in the heart of operations to create new Bitcoins, to transfer them between transaction parties, and to validate the correctness of transactions.
Since appearance of Bitcoins, several new systems were introduced that use cryptography to manage its own currency, so all such currencies represent the category of crypto currencies. Later in this Report, some other digital / virtual currencies will be described that are created and managed using some other principles, so they are not called crypto currency. At the time of writing this Report, all such digital virtual currencies were called with general term tokens, sometimes also digital assets tokens. The reason is that they were created by the process called collateralization and therefore they are related to the value of some categories of real world assets which is expressed in digital tokens units.
The second interesting and important feature of the Bitcoin system is that the logical relationship between the two transaction parties is direct, peer-to–peer, i.e. there are no other parties that participate in the transaction. This is an important feature and benefit / advantage of the system that contributes to its efficiency when compared with the todays complex and expensive financial payment infrastructures and protocols. However, for distribution of transactions to their validators and later to all other members in the Bitcoin system the physical flow of each transaction is very complex and includes many parties.
It should be emphasized that performing transactions as direct, peer-to–peer transfers is one of the key features and the most significant reason for many benefits and advantages of the Bitcoin system. This approach is the key feature of the Bitcoin system as it enables security and anonymity of parties, efficiency in performing transactions, scaling of the system, and instantaneous settlement of payments. Therefore, supporting execution and validation of serious business peer–to–peer transactions is one of the core benefits of the blockchain concept, as it changes the current paradigm of Internet applications and transactions. Currently all Internet applications are organized and performed as client–server transactions. Such transactions are not efficient, do not provide sufficient privacy of participants, have dependencies on third parties and usually are vulnerable due to attacks of functional problems with large centralized application servers.
The next very important characteristic of the Bitcoin system is anonymity of users, their accounts, and transactions. This property means that the identities of the participants in the system are not known even to the partners performing a payment transaction. All other system operations – receiving payments, making payments, validating transactions, etc. are also performed anonymously. Interpreting this property correctly, the anonymity of transaction participants is so called pseudo-anonymity. Namely, in the process of validating transactions, all previous transactions of the sender are traced back to the original initial transaction. If that initial transaction was the purchase of Bitcoins at some Bitcoin Exchange, then the identity of the original owner of Bitcoins is known. Most if not all service providers in the Bitcoin system today require very strict identification of participants for the purpose of enforcing legal and regulated transactions and include certain restrictions of transaction frequency and amounts. This procedure, although understandable from the legal and regulatory point of view, has in fact in essence changed one of the core principles of the original concept of the Bitcoin system – full anonymity of users.
Better solution for fully anonymous payment transactions is so called zero–knowledge protocol, where the identity and authorization to perform Bitcoin transactions, is validated by anyone without revealing any identity information of the parties. The only problem with this approach is revealing the identity of transaction participants to law enforcement authorities in case of illegal transactions. But, such authorities have special authorization under the law and they should be enabled to get identifying information about transaction participants in the process of legal law enforcement procedures. But, all other service providers do not have such status, so if Bitcoin principles are strictly followed, they should not be able to have identifying information about system participants.
This approach and potential improvement of the Bitcoin system implies that the system needs one of the classical security services: role–based authorization. In such arrangement, there would be at least two categories of system participants: those that are authorized to maintain and access identifying information about the participants and those that are only authorized to perform transactions. In the first category are legal authorities, like police, driving license authorities, tax authorities, etc. In the context of the standard Identities Management Systems, such participants are called Identity Providers. All others are Identity Verifiers. Therefore, one of the main conclusions about true anonymity in the Bitcoin system is establishment of a sophisticated and multi-role Identities Management System, where some parties will be authorized Identity Providers and all others will be Identity Validators. Finally, referring back to the infrastructure of the Bitcoin system to perform and validate transactions – blockchain, the conclusion is that what is needed, as one of the most important extensions of the current concept of anonymity of Bitcoins participants, is an Identity Management System based itself on the use of blockchain and without Identity Providers as trusted third parties. Creation, distribution, use and validation of identities are transactions in the system, equivalent to payment transactions, so they should also be performed using blockchain protocol. Such system, that can provide reliable identities of all participants may be called Blockchain Identity Management System.
Another very important feature of the original concept of the Bitcoin system is that it is not controlled by any financial institution, by any regulatory body or by any legal financial authority when it comes to issuing Bitcoins and determining their value. This means that the currency used in the system and all transactions are exempted from any legal and financial rules and regulations. The rules controlling Bitcoin system are built in its code. This property is usually called “rule by the technical code”, as the rules of system operations, built in the code of its operational components, control and rule the operations of the system [UK, 2016], Chapter 3. This property is sometimes described as “control by the community”, i.e. the participating users.
This property implies that the value of Bitcoins is determined solely on the market – based on its supply and demand. This is quite natural approach, as the value of shares of companies are also determined on an open trading market. However, such approach implies that the value of Bitcoin, as crypto currency, is volatile related to fiat currencies. This property represent serious problem to perform payments using Bitcoin. It is well-known that volatile currencies are not suitable for payments. The practice of all the years while Bitcoins are in use has shown that its volatility represents one of the major obstacles for its main purpose – to be used as the payment system. In fact, it was announced that in 2019 the total value of Bitcoin transactions performed was about $ 11 T. However, unfortunately, only about 1.3% of those transactions were payments, all others were trading manipulations on exchanges. Based on that, it may be clearly stated that Bitcoin today is not used as the payment system, but as currency manipulation system. This is one of the main problems with the concept and current implementation and deployment of Bitcoin system and in near future may represent the main reason for its decline in popularity.

1.3 Innovative Contributions of the Bitcoin System

Besides an effective procedure to transfer an amount of crypto currency from one user (account) to another user (account), the major and indeed an essential contribution of the concept of the Bitcoin is the solution to the general problem how to establish trust between two mutually unknown and otherwise unrelated parties to such an extent and certainty that sensitive and secure transactions can be performed with full confidence over an open environment, such as Internet. In all current large scale and not only financial systems that problem is solved by using the assistance of third parties. For many (may be even all) current Internet applications and transactions those third parties are integrated and linked into a large, complex, expensive and vulnerable operational infrastructures. Examples of such infrastructures today are bankcard networks supporting global international payments, global international banking networks supporting international financial transfers, Public–Key Infrastructures (PKI), Identity Management Systems, and many others. It is a general consent that such infrastructures are expensive and, more important, vulnerable to external and internal attacks.
In addition to the complexity and vulnerabilities of such current operational supporting infrastructures, another requirement and prerequisite to use their services is that users must put the complete trust in these third parties. Accepting to trust those third–party service providers is the necessary and mandatory prerequisite to use their services.
Therefore, one of the most important contributions of the concept of Bitcoin is that it solves the issue how two parties, mutually unknown to each other in advance and otherwise completely unrelated, can perform sensitive and secure transactions, such as transfer of money – payments, but without assistance of any third party and without the need to place trust in any component of the system.
The practical benefits of solving this problem and the most important consequence of the solution for this problem – Bitcoin system, is that it provides the possibility for one Internet user to transfer not only Bitcoins, but also any other form of digital asset to or shared with another Internet user, such that the transfer is guaranteed to be safe and secure, that everyone knows that the transfer has been performed, and nobody can challenge the legitimacy of the transfer.
This feature of the Bitcoin system generated many very new, creative and innovative ideas where the concept equivalent to the Bitcoin can be used to perform secure and reliable transactions between users in an open community handling any type of digital asset ([Andreesen, 2014], [Sparkes, 2014], [UniCredit, 2016], [BitID, 2015], [PoE, 2015]). The examples of such applications and transactions range from commercial transitions, real estate transactions, energy trading, electronic voting, medical applications, and many others ([Kounelis, 2015], [Muftic, 2016]). The concept of blockchain as technology supporting validation of all such transactions is therefore called disruptive technology.
As the conclusion in this section, we may give a definition of blockchain:
Blockchain is an innovative concept, implemented as an infrastructure comprising multiple and distributed servers, mutually linked by special broadcasting and synchronization protocols, managing immutable objects with the purpose to enable and protect secure peer–to–peer transactions in a global and open environment.

1.4 Summary of Problems and Potential Solutions

In section 1.2 several problems of the Bitcoin system were mentioned and potential solutions for these problems were outlined. Recently, at the time of writing this Technical Report, several sources, mainly personal blogs and articles, appeared with very interesting opinions and statements regarding some other serious Bitcoin problems. Some of them are problems with the concept of the system, some problems of its design, and some problems of operations. In this section some of these problems are briefly summarized including suggestions for their potential solutions. The source of some problems was the article [Ein, 2018].
Problem 1: Complex Crypto Algorithms
Problem: Bitcoins is crypto currency and cryptographic algorithms used in the current version are very complex, based on the concept of proof–of–work, and require long time, special hardware and a lots of energy to perform
Potential Solution: Potential solution fro this problem is to use cryptographic algorithms that are simpler and therefore more efficient to execute and need less energy
Problems with Potential Solution: Lowering the complexity of crypto algorithms introduces vulnerability to hackers. Therefore, what is needed are strong algorithms and simple to perform for regular users and complex to break by hackers
Problem 2: Indirect Transactions, not Peer–to–Peer
Problem: Contrary to the concept claimed, in todays implementation Bitcoin payment transactions are not performed as direct, peer–to–peer transactions. They are performed indirectly, submitted to the Bitcoin network, and recipients receive them indirectly, by downloading validated transactions from the ledger
Potential Solution: Transactions should be performed directly, by transferring them directly between two users
Problems with Potential Solution: The problem with the potential solution is validation of transaction for proof of possession of Bitcoins by the sender and for prevention of double-spending. Therefore, what is needed is the protocol to validate peer–to–peer transactions.
Problem 3: Anonymity of Users not provided
Problem: Contrary to the concept claimed, in todays deployments of additional system components, mainly exchanges, users are not anonymous
Potential Solution: Blockchain–based Distributed Identity Management System with Role-based Authorizations
Problems with Potential Solution: The problem with potential solution is that it depends on trusted third parties with authorized roles. Therefore, what is needed is blockchain-based Identity Management System using hybrid (permissioned and unpermissioned) blockchain
Problem 4: Volatile Value, not suitable for Payments
Problem: Contrary to the concept claimed that Bitcoin is payment system, volatile value of the currency makes it inconvenient for payments
Potential Solution: Crypto currency with stable value
Problems with Potential Solution: The problem with the potential solution is that the value of Bitcoins is determined on the secondary market, during its trading (cash-in / cash-out). Therefore, what is needed is crypto currency that does not have volatile value
The remaining problems in this section are quoted from [Ein, 2018]:
Problem 5: Negative Environmental Impact
Problem: Mining algorithms and operational facilities (“mining farms”) consume too much electrical energy, based on the “proof-of-work” protocol
Potential Solution: Using mining algorithms that consume less energy, either as simpler / lighter crypto algorithms or using alternative crypto protocols to protect transactions integrity (“proof-of-stake”)
Problems with Potential Solution: The problem with the potential solution is that simpler / lighter algorithms open vulnerabilities to hackers while alternative crypto protocols are not backward compatible with the current system
Problem 6: Slow Performance (Delays) / Low Throughput
Problem: Due to blocking and the designed time for protection of transactions (10 minutes) Bitcoin system has very slow performance – transactions are validated in about an hour and transaction processing throughput is about 7 transactions per second
Potential Solution: Using transaction validation algorithms and protocols that do not need blocking of transactions, but transactions should be validated individually
Problems with Potential Solution: There are no serious problems with the proposed potential solution
Problem 7: Limited Number of Bitcoins
Problem: Due hardware and other types of failures, the number of available Bitcoins in the system is constantly reducing
Potential Solution: Potential solution could be to use smaller portions of Bitcoin (“Satoshi”) or introduce hard-fork by splitting the amount of available Bitcoins
Problems with Potential Solution: The problems with the first solution that it is not user-friendly and the problem with the second solution is backwards compatibility.
Problem 8: Real Value of Bitcoins
Problem: The value of Bitcoins is purely psychological and reflects only pure market speculations
Potential Solution: Potential solution could be to peg the value of Bitcoin to local fiat currencies in countries of deployments
Problems with Potential Solution: The problems with the potential solution is that such Bitcoins would be a new class of Bitcoins, not traded on exchanges and not volatile
At the end of this section, it is very interesting to quote two opinions about the future of Bitcoin and blockchain:
[Ein, 2018]: “It seems that Bitcoin will likely cease to have meaningful value*, defeating the whole point and philosophy imagined by Satoshi Nakamoto, the alleged inventor of Bitcoin. Its current value appears to be purely psychological, and the hype seems to be driven by irrational exuberance, greed and speculation. Modern human history has seen many* bubbles*, including the dot-com bubble, the housing bubble and even the tulip bubble. However, when these bubbles exploded, many excellent dot-com companies survived, most houses regained their value and tulips still have meaning and carry value in our lives today. But what will happen when the Bitcoin bubble bursts? What* utility or residual value will Bitcoin have to consumers and businesses? Most likely none*. And this is the real problem with Bitcoin and crypto currencies.*
Bitcoin will likely go down in history as a great technological invention that popularized blockchain yet failed due to its design limitations*. Just like the industrial revolution was fueled by the combustion engine, Nakamoto’s most valuable contribution is the* blockchain polymorphic engine that will further accelerate innovation in the post-information age and immensely affect our lives”.
This quote makes two very important and far–reaching predictions:
(1) Bitcoin, as the payment system will disappear (“. . . will go down in history”), and
(2) The most valuable contribution of the Bitcoin system is blockchain
This article was written in 2018. It is very interesting to notice that at the time of writing this Technical Report, (1) Bitcoin was still “alive” and (2) the concept and deployments of blockchain were in serious trouble.
Based on the principle of positive and creative approach, in the rest of this Technical Report, besides description of all technical details of the Bitcoin system, some potential solutions for its improvement will also be discussed.
However, contrary to the predicted status of Bitcoin, it seems that the predicted status of blockchain, in 2020 was still facing serious problems.
[Barber, 2019]: What's Blockchain Actually Good for, Anyway? For Now, Not Much
“Not long ago, blockchain technology was touted as a way to track tuna, bypass banks, and preserve property records. Reality has proved a much tougher challenge”.

[Lucanus, 2020]: Has Blockchain Failed Before It Even Really Began?

“Just as everyone was getting really excited about its potential, it appears blockchain is dead. For a technology that was supposed to transform and solve seemingly every problem in the world, the enthusiasm is fading pretty quickly”.
At the time of writing this Technical Report, there were many new blockchain – concepts, design and even several deployed and operational instances. Some of them are even very popular, but only among enthusiastic developers. The overall trends with real life deployments, and more and more comments about the capabilities and features of blockchains are appearing with negative connotation. Therefore, seems that even for blockchain some innovative concepts and approaches are needed. They are beyond the scope of this Technical Report and will be addressed in some of our follow-up reports.
submitted by Theus5 to btc [link] [comments]

Introduction and overview of the Bitcoin system

Based on this post I made a bit earlier:
https://www.reddit.com/BitcoinBeginners/comments/euozq4/blockchain_and_btc_technical_review_of_the_past/
We put together an introductory overview of the Bitcoin System. As this is intended for beginners I think this subreddit would be a good place to get some feedback. What will you learn from the text:
If you do decide to go through the text would love some feedback. Was it clear? Did you get any value from it? Anything that needs to be expanded on?
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1 Introduction to the Bitcoin System

1.1 Introduction and General Description

There are many definitions and descriptions of Bitcoin. Some describe it as an innovative virtual or crypto currency, some as the system for peer-to–peer electronic cash payment transactions, and some others as decentralized platform and infrastructure for anonymous payment transactions using any type of crypto currency.
In this Report we will adopt the concept that the Bitcoin system is a payment system. It has its own features, its own currency, its own protocols and components, and with all that Bitcoin supports payment transactions. In other words, the core function of the Bitcoin system is to support payments between two parties – the party that makes a payment and the party that receives the payment.
Based on the original concept and the description of the Bitcoin [Bitcoin, 2016], “it is a decentralized digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: transaction management and money issuance are carried out collectively by the network”.
The system is decentralized since its supporting platform blockchain, comprises an infrastructure of multiple distributed servers, mutually linked by an instantaneous broadcasting protocol. Users perform transactions within the open and distributed community of registered users. Digital currency used in the system is not electronic form of fiat currency, but a special form of the currency generated and used only within the Bitcoin system. This concept is based on the notion that money can be interpreted as any object, or any sort of record, that is accepted as payment for goods and services and repayment of debts in a given country or socio-economic context. Bitcoin system is designed around the idea of using cryptography to control the creation and transfer of money, rather than relying on central authorities.
There are several important requirements when making any type of payment and with any currency. The best example of a “perfect” payment transaction that meets all these requirements is payment using cash over-the-counter. When a consumer pays to a merchant using cash over-the-counter, such transaction satisfies all requirements and expectations of both parties. First, the transaction is instantaneous, as the paper bill is transferred hand-to-hand, from the consumer to the merchant. The transaction is cheap, in fact there is no overhead charge to perform transaction, so the merchant receives the full amount. The transaction is irreversible, what is the property beneficial to merchants. The transaction is legal, as the merchant can verify the legality of the paper bill. And, finally, the transaction is anonymous for the consumer as he/she does not need to reveal his/her identity.
The only “problem” with cash over-the-counter is the cash itself, as using and handling cash has many disadvantages.
Bitcoin concept and system solves all issues and problems with the use of cash, but at the same time provides all advantages when performing transactions using digital and communication technologies. So, paying with Bitcoins is effectively payment transaction that uses “digital cash over-the-counter”. The concept of the Bitcoin system provides all advantages and benefits mentioned above with payments using cash over-the-counter, but eliminates the problems of using cash. That is the reason why Bitcoins are often referred to as “digital cash”.
One of significant features of payments using cash over-the-counter is that there are no third parties to participate or assist in the execution and validation of a transaction. This feature makes Bitcoin transactions very efficient and also very cheap to perform. Other types of todays payment systems, for instance using bank-to-bank account transfers or using bankcards, use many additional intermediate parties and use very complicated background infrastructure to validate and clear payment transactions. These infrastructures are complex to establish and operate, they are expensive, and they are vulnerable to attacks and penetrations by hackers. Bitcoin does not use such complex infrastructures, what is the reason that its transactions are efficient and cheap. An additional problem with third-party transaction players is that transaction parties must put the complete trust in all these parties without any means to verify their functionality, correctness, or security.
Bitcoin system uses public-key cryptography to protect the currency and transactions. Logical relationships between transaction parties is direct, peer-to-peer, and the process of validating transactions is based on cryptographic proof-of-work. When performing a transaction, the net effect is that certain amount of Bitcoins is transferred from one cryptographic address to another. Each user may have and use several addresses simultaneously. Each payment transaction is broadcast to the network of distributed transaction processing servers. These servers collect individual transactions, package them into blocks, and send them for validation.
Each block is cryptographically processed by the large number of so called “miners”. They each attempt to create cryptographic hash value that has special form. This is computationally very difficult and time-consuming task, therefore, it is very difficult to perform and repeat. Individual blocks are validated using cryptographic processing procedures that require substantial amount of work and computing power.
Approximately an hour or two after submitting the transaction for validation, each transaction is locked in time and by cryptographic processing by the massive amount of computing power that was used to complete the block. When the block is validated, it is added to the chain of all previous blocks, thus forming a public archive of all blocks and transactions in the system.
One of the most important problems with uncontrolled digital currency, where there are no third parties to validate and approve transactions, is so called double spending. Since the currency is digital, stored at user’s local workstations, in mobile phones, or on network servers, it can be easily copied and sent to multiple recipients multiple times.
Bitcoin system solves this problem with a very interesting approach. It is the first effective example of the solution for the double-spending problem without the need for assistance of any third party. Bitcoin solves this problem by keeping and distributing an archive of all transactions among all the users of the system via a peer-to-peer distribution network. Every transaction that occurs in the Bitcoin system is recorded in that public and distributed transactions ledger. Since the components in that ledger are blocks with transactions and the blocks are “chained” in time and in a cryptographic sequence, the ledger in the Bitcoin system is called blockchain.
That full blockchain of all transactions that were performed in the Bitcoin system before the specific transaction can be used to verify new transactions. The transactions are verified against the blockchain to ensure that the same Bitcoins have not been previously spent. This approach eliminates the double-spending problem. The essence of the verification procedure for a single transaction in fact is the test of the balance of the sending account. The test is very normal and natural: payment of a certain amount of the currency can be made only of the balance of the outgoing account is equal or larger than the payment amount. Current balance of an account is established by tracing all incoming and outgoing transactions for that account.
The procedure to verify the validity of individual transactions and to prevent double-spending is based on the use of special type of cryptographic protocol called public-key cryptography. With this type of cryptographic systems each user has two cryptographic keys. They are mutually related in the sense that, what ever the one key encrypts, the other key can decrypt. One of the two keys is a private key that is kept secret, and the other key is public key that can be shared with all other users in the system. When a user wants to make a payment to another user, the sender transfers certain amount of Bitcoins from his/her account to the account of the receiver. This action is performed by the sender by creating a payment message, called a “transaction,” which contains recipient’s public key – receiving address and payment amount. The transaction is cryptographically processed by the sender’s private key, the operation called digital signing, and as the result digital signature is created and appended to the transaction.
By using sender’s private key every user in the system can verify that the transaction was indeed created by the indicated sender, as his/her private key can successfully decrypt the content of the digital signature. The exchange is authentic, since the transaction was also cryptographically processed with the recipient’s public key, the operation which is called digital enveloping. This transformation guarantees that the transaction can be accepted and processed only by the holder of the corresponding private key, which is the intended recipient.
Every transaction, and thus the transfer of ownership of the specified amount of Bitcoins, is inserted, then time-stamped, and finally displayed in one “block” of the blockchain. Public-key cryptography ensures that all computers in the network have a constantly updated and verified record of all transactions within the Bitcoin network, which prevents double-spending and fraud.

1.2 The Concept and Features of the Bitcoin System

There are many concepts and even more operational payment systems today in the world. Some are standard paper–based, some are digital and network based. What makes Bitcoin unique and distinctive, compared with all other payment systems that are in use today, are several of its core features.
The first of them is that the system uses its own currency. The reason for using its own currency is to make the system independent of financial institutions as trusted third parties. The unit of the currency is called Bitcoin. The currency is so called crypto currency, because it is generated and used based on execution of certain cryptographic algorithms and protocols. Performing specific cryptographic protocols is in the heart of operations to create new Bitcoins, to transfer them between transaction parties, and to validate the correctness of transactions.
Since appearance of Bitcoins, several new systems were introduced that use cryptography to manage its own currency, so all such currencies represent the category of crypto currencies. Later in this Report, some other digital / virtual currencies will be described that are created and managed using some other principles, so they are not called crypto currency. At the time of writing this Report, all such digital virtual currencies were called with general term tokens, sometimes also digital assets tokens. The reason is that they were created by the process called collateralization and therefore they are related to the value of some categories of real world assets which is expressed in digital tokens units.
The second interesting and important feature of the Bitcoin system is that the logical relationship between the two transaction parties is direct, peer-to–peer, i.e. there are no other parties that participate in the transaction. This is an important feature and benefit / advantage of the system that contributes to its efficiency when compared with the todays complex and expensive financial payment infrastructures and protocols. However, for distribution of transactions to their validators and later to all other members in the Bitcoin system the physical flow of each transaction is very complex and includes many parties.
It should be emphasized that performing transactions as direct, peer-to–peer transfers is one of the key features and the most significant reason for many benefits and advantages of the Bitcoin system. This approach is the key feature of the Bitcoin system as it enables security and anonymity of parties, efficiency in performing transactions, scaling of the system, and instantaneous settlement of payments. Therefore, supporting execution and validation of serious business peer–to–peer transactions is one of the core benefits of the blockchain concept, as it changes the current paradigm of Internet applications and transactions. Currently all Internet applications are organized and performed as client–server transactions. Such transactions are not efficient, do not provide sufficient privacy of participants, have dependencies on third parties and usually are vulnerable due to attacks of functional problems with large centralized application servers.
The next very important characteristic of the Bitcoin system is anonymity of users, their accounts, and transactions. This property means that the identities of the participants in the system are not known even to the partners performing a payment transaction. All other system operations – receiving payments, making payments, validating transactions, etc. are also performed anonymously. Interpreting this property correctly, the anonymity of transaction participants is so called pseudo-anonymity. Namely, in the process of validating transactions, all previous transactions of the sender are traced back to the original initial transaction. If that initial transaction was the purchase of Bitcoins at some Bitcoin Exchange, then the identity of the original owner of Bitcoins is known. Most if not all service providers in the Bitcoin system today require very strict identification of participants for the purpose of enforcing legal and regulated transactions and include certain restrictions of transaction frequency and amounts. This procedure, although understandable from the legal and regulatory point of view, has in fact in essence changed one of the core principles of the original concept of the Bitcoin system – full anonymity of users.
Better solution for fully anonymous payment transactions is so called zero–knowledge protocol, where the identity and authorization to perform Bitcoin transactions, is validated by anyone without revealing any identity information of the parties. The only problem with this approach is revealing the identity of transaction participants to law enforcement authorities in case of illegal transactions. But, such authorities have special authorization under the law and they should be enabled to get identifying information about transaction participants in the process of legal law enforcement procedures. But, all other service providers do not have such status, so if Bitcoin principles are strictly followed, they should not be able to have identifying information about system participants.
This approach and potential improvement of the Bitcoin system implies that the system needs one of the classical security services: role–based authorization. In such arrangement, there would be at least two categories of system participants: those that are authorized to maintain and access identifying information about the participants and those that are only authorized to perform transactions. In the first category are legal authorities, like police, driving license authorities, tax authorities, etc. In the context of the standard Identities Management Systems, such participants are called Identity Providers. All others are Identity Verifiers. Therefore, one of the main conclusions about true anonymity in the Bitcoin system is establishment of a sophisticated and multi-role Identities Management System, where some parties will be authorized Identity Providers and all others will be Identity Validators. Finally, referring back to the infrastructure of the Bitcoin system to perform and validate transactions – blockchain, the conclusion is that what is needed, as one of the most important extensions of the current concept of anonymity of Bitcoins participants, is an Identity Management System based itself on the use of blockchain and without Identity Providers as trusted third parties. Creation, distribution, use and validation of identities are transactions in the system, equivalent to payment transactions, so they should also be performed using blockchain protocol. Such system, that can provide reliable identities of all participants may be called Blockchain Identity Management System.
Another very important feature of the original concept of the Bitcoin system is that it is not controlled by any financial institution, by any regulatory body or by any legal financial authority when it comes to issuing Bitcoins and determining their value. This means that the currency used in the system and all transactions are exempted from any legal and financial rules and regulations. The rules controlling Bitcoin system are built in its code. This property is usually called “rule by the technical code”, as the rules of system operations, built in the code of its operational components, control and rule the operations of the system [UK, 2016], Chapter 3. This property is sometimes described as “control by the community”, i.e. the participating users.
This property implies that the value of Bitcoins is determined solely on the market – based on its supply and demand. This is quite natural approach, as the value of shares of companies are also determined on an open trading market. However, such approach implies that the value of Bitcoin, as crypto currency, is volatile related to fiat currencies. This property represent serious problem to perform payments using Bitcoin. It is well-known that volatile currencies are not suitable for payments. The practice of all the years while Bitcoins are in use has shown that its volatility represents one of the major obstacles for its main purpose – to be used as the payment system. In fact, it was announced that in 2019 the total value of Bitcoin transactions performed was about $ 11 T. However, unfortunately, only about 1.3% of those transactions were payments, all others were trading manipulations on exchanges. Based on that, it may be clearly stated that Bitcoin today is not used as the payment system, but as currency manipulation system. This is one of the main problems with the concept and current implementation and deployment of Bitcoin system and in near future may represent the main reason for its decline in popularity.

1.3 Innovative Contributions of the Bitcoin System

Besides an effective procedure to transfer an amount of crypto currency from one user (account) to another user (account), the major and indeed an essential contribution of the concept of the Bitcoin is the solution to the general problem how to establish trust between two mutually unknown and otherwise unrelated parties to such an extent and certainty that sensitive and secure transactions can be performed with full confidence over an open environment, such as Internet. In all current large scale and not only financial systems that problem is solved by using the assistance of third parties. For many (may be even all) current Internet applications and transactions those third parties are integrated and linked into a large, complex, expensive and vulnerable operational infrastructures. Examples of such infrastructures today are bankcard networks supporting global international payments, global international banking networks supporting international financial transfers, Public–Key Infrastructures (PKI), Identity Management Systems, and many others. It is a general consent that such infrastructures are expensive and, more important, vulnerable to external and internal attacks.
In addition to the complexity and vulnerabilities of such current operational supporting infrastructures, another requirement and prerequisite to use their services is that users must put the complete trust in these third parties. Accepting to trust those third–party service providers is the necessary and mandatory prerequisite to use their services.
Therefore, one of the most important contributions of the concept of Bitcoin is that it solves the issue how two parties, mutually unknown to each other in advance and otherwise completely unrelated, can perform sensitive and secure transactions, such as transfer of money – payments, but without assistance of any third party and without the need to place trust in any component of the system.
The practical benefits of solving this problem and the most important consequence of the solution for this problem – Bitcoin system, is that it provides the possibility for one Internet user to transfer not only Bitcoins, but also any other form of digital asset to or shared with another Internet user, such that the transfer is guaranteed to be safe and secure, that everyone knows that the transfer has been performed, and nobody can challenge the legitimacy of the transfer.
This feature of the Bitcoin system generated many very new, creative and innovative ideas where the concept equivalent to the Bitcoin can be used to perform secure and reliable transactions between users in an open community handling any type of digital asset ([Andreesen, 2014], [Sparkes, 2014], [UniCredit, 2016], [BitID, 2015], [PoE, 2015]). The examples of such applications and transactions range from commercial transitions, real estate transactions, energy trading, electronic voting, medical applications, and many others ([Kounelis, 2015], [Muftic, 2016]). The concept of blockchain as technology supporting validation of all such transactions is therefore called disruptive technology.
As the conclusion in this section, we may give a definition of blockchain:
Blockchain is an innovative concept, implemented as an infrastructure comprising multiple and distributed servers, mutually linked by special broadcasting and synchronization protocols, managing immutable objects with the purpose to enable and protect secure peer–to–peer transactions in a global and open environment.

1.4 Summary of Problems and Potential Solutions

In section 1.2 several problems of the Bitcoin system were mentioned and potential solutions for these problems were outlined. Recently, at the time of writing this Technical Report, several sources, mainly personal blogs and articles, appeared with very interesting opinions and statements regarding some other serious Bitcoin problems. Some of them are problems with the concept of the system, some problems of its design, and some problems of operations. In this section some of these problems are briefly summarized including suggestions for their potential solutions. The source of some problems was the article [Ein, 2018].
Problem 1: Complex Crypto Algorithms
Problem: Bitcoins is crypto currency and cryptographic algorithms used in the current version are very complex, based on the concept of proof–of–work, and require long time, special hardware and a lots of energy to perform
Potential Solution: Potential solution fro this problem is to use cryptographic algorithms that are simpler and therefore more efficient to execute and need less energy
Problems with Potential Solution: Lowering the complexity of crypto algorithms introduces vulnerability to hackers. Therefore, what is needed are strong algorithms and simple to perform for regular users and complex to break by hackers
Problem 2: Indirect Transactions, not Peer–to–Peer
Problem: Contrary to the concept claimed, in todays implementation Bitcoin payment transactions are not performed as direct, peer–to–peer transactions. They are performed indirectly, submitted to the Bitcoin network, and recipients receive them indirectly, by downloading validated transactions from the ledger
Potential Solution: Transactions should be performed directly, by transferring them directly between two users
Problems with Potential Solution: The problem with the potential solution is validation of transaction for proof of possession of Bitcoins by the sender and for prevention of double-spending. Therefore, what is needed is the protocol to validate peer–to–peer transactions.
Problem 3: Anonymity of Users not provided
Problem: Contrary to the concept claimed, in todays deployments of additional system components, mainly exchanges, users are not anonymous
Potential Solution: Blockchain–based Distributed Identity Management System with Role-based Authorizations
Problems with Potential Solution: The problem with potential solution is that it depends on trusted third parties with authorized roles. Therefore, what is needed is blockchain-based Identity Management System using hybrid (permissioned and unpermissioned) blockchain
Problem 4: Volatile Value, not suitable for Payments
Problem: Contrary to the concept claimed that Bitcoin is payment system, volatile value of the currency makes it inconvenient for payments
Potential Solution: Crypto currency with stable value
Problems with Potential Solution: The problem with the potential solution is that the value of Bitcoins is determined on the secondary market, during its trading (cash-in / cash-out). Therefore, what is needed is crypto currency that does not have volatile value
The remaining problems in this section are quoted from [Ein, 2018]:
Problem 5: Negative Environmental Impact
Problem: Mining algorithms and operational facilities (“mining farms”) consume too much electrical energy, based on the “proof-of-work” protocol
Potential Solution: Using mining algorithms that consume less energy, either as simpler / lighter crypto algorithms or using alternative crypto protocols to protect transactions integrity (“proof-of-stake”)
Problems with Potential Solution: The problem with the potential solution is that simpler / lighter algorithms open vulnerabilities to hackers while alternative crypto protocols are not backward compatible with the current system
Problem 6: Slow Performance (Delays) / Low Throughput
Problem: Due to blocking and the designed time for protection of transactions (10 minutes) Bitcoin system has very slow performance – transactions are validated in about an hour and transaction processing throughput is about 7 transactions per second
Potential Solution: Using transaction validation algorithms and protocols that do not need blocking of transactions, but transactions should be validated individually
Problems with Potential Solution: There are no serious problems with the proposed potential solution
Problem 7: Limited Number of Bitcoins
Problem: Due hardware and other types of failures, the number of available Bitcoins in the system is constantly reducing
Potential Solution: Potential solution could be to use smaller portions of Bitcoin (“Satoshi”) or introduce hard-fork by splitting the amount of available Bitcoins
Problems with Potential Solution: The problems with the first solution that it is not user-friendly and the problem with the second solution is backwards compatibility.
Problem 8: Real Value of Bitcoins
Problem: The value of Bitcoins is purely psychological and reflects only pure market speculations
Potential Solution: Potential solution could be to peg the value of Bitcoin to local fiat currencies in countries of deployments
Problems with Potential Solution: The problems with the potential solution is that such Bitcoins would be a new class of Bitcoins, not traded on exchanges and not volatile
At the end of this section, it is very interesting to quote two opinions about the future of Bitcoin and blockchain:
[Ein, 2018]: “It seems that Bitcoin will likely cease to have meaningful value, defeating the whole point and philosophy imagined by Satoshi Nakamoto, the alleged inventor of Bitcoin. Its current value appears to be purely psychological, and the hype seems to be driven by irrational exuberance, greed and speculation. Modern human history has seen many bubbles, including the dot-com bubble, the housing bubble and even the tulip bubble. However, when these bubbles exploded, many excellent dot-com companies survived, most houses regained their value and tulips still have meaning and carry value in our lives today. But what will happen when the Bitcoin bubble bursts? What utility or residual value will Bitcoin have to consumers and businesses? Most likely none. And this is the real problem with Bitcoin and crypto currencies.
Bitcoin will likely go down in history as a great technological invention that popularized blockchain yet failed due to its design limitations. Just like the industrial revolution was fueled by the combustion engine, Nakamoto’s most valuable contribution is the blockchain polymorphic engine that will further accelerate innovation in the post-information age and immensely affect our lives”.
This quote makes two very important and far–reaching predictions:
(1) Bitcoin, as the payment system will disappear (“. . . will go down in history”), and
(2) The most valuable contribution of the Bitcoin system is blockchain
This article was written in 2018. It is very interesting to notice that at the time of writing this Technical Report, (1) Bitcoin was still “alive” and (2) the concept and deployments of blockchain were in serious trouble.
Based on the principle of positive and creative approach, in the rest of this Technical Report, besides description of all technical details of the Bitcoin system, some potential solutions for its improvement will also be discussed.
However, contrary to the predicted status of Bitcoin, it seems that the predicted status of blockchain, in 2020 was still facing serious problems.
[Barber, 2019]: What's Blockchain Actually Good for, Anyway? For Now, Not Much
“Not long ago, blockchain technology was touted as a way to track tuna, bypass banks, and preserve property records. Reality has proved a much tougher challenge”.

[Lucanus, 2020]: Has Blockchain Failed Before It Even Really Began?

“Just as everyone was getting really excited about its potential, it appears blockchain is dead. For a technology that was supposed to transform and solve seemingly every problem in the world, the enthusiasm is fading pretty quickly”.
At the time of writing this Technical Report, there were many new blockchain – concepts, design and even several deployed and operational instances. Some of them are even very popular, but only among enthusiastic developers. The overall trends with real life deployments, and more and more comments about the capabilities and features of blockchains are appearing with negative connotation. Therefore, seems that even for blockchain some innovative concepts and approaches are needed. They are beyond the scope of this Technical Report and will be addressed in some of our follow-up reports.
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