nyuuzyou/wikis huggingface dataset:
Eyal Hertzog

Eyal hertog has been building internet startups since 1998, when he started with Arnon Di-nur "Contact Networks" - a social network integrated to popular address-book solutions. He later started Metacafe, a video sharing service that reached 50m unique visitors every month. In 2011, Eyal took a two year break from work to independently research a wide range of fields, including history, economy, monetary systems and spirituality, which led him to start, together with four friends, "AppCoin LTD", a cloud solution and a platform for user-generated-currencies. 
Eyal lives in Tel Aviv with his wife and two boys, and loves playing the piano and jamming on the bass with his friends.
category:people
F2Pool

F2Pool is a Chinese mining pool, also referred to as "Discus Fish". The pool opened on May 5, 2013. This name stems from the time before the pool had an English interface. At the time they were known only by their coinbase signature, which is 七彩神仙鱼 (Discus Fish), the nickname of one of the operators.
The coinbase signature for this pool is: "七彩神仙鱼[...]Mined by username"Example of decoded coinbase.
==Features==
* 30 coins supported
* Stratum mining protocol
* PPS+ at 2.5% for BTC
* Vardiff
* Daily automatically payout once reached the threshold.
* Minimum withdrawal at 0.005 BTC, 0.02 LTC, 0.1 ZEC or 0.1 ETH
* Servers in: US, EU and China
* English, Spanish, Russian, Simplified Chinese and Traditional Chinese language user interface
==External Links==
* Website: https://www.f2pool.com/
* FAQ: https://blog.f2pool.com/en/help/category/faq-en
* Threshold and fee per coin: https://blog.f2pool.com/en/faq-en/the-threshold-for-each-coin
* Stratum servers per coin: https://blog.f2pool.com/en/faq-en/f2pool-pool-info-en
* Official English thread: https://bitcointalk.org/index.php?topic=700411.0
==See Also==
* Comparison of mining pools
* Pooled mining
==References==
Category:Pool Operators
FBTC Exchange

Formerly, a Bitcoin trading market exchange serving those buying or selling bitcoins.
Languages: English, Dutch.
==History==
The service was announced June 25, 2013New Fast Bitcoin Exchange in the Netherlands. Reportedly, criminals operated the service to launder stolen bank fundsMalware gang steals $1.4m and sets up bitcoin exchange to launder it.
==See Also==
* Buying bitcoins
* Selling bitcoins
==References==
FPGA

A field-programmable gate array (FPGA) is an integrated circuit designed to be configured by the customer or designer after manufacturing—hence "field-programmable". The FPGA configuration is generally specified using a hardware description language (HDL), similar to that used for an application-specific integrated circuit (ASIC) (circuit diagrams were previously used to specify the configuration, as they were for ASICs, but this is increasingly rare). FPGAs can be used to implement any logical function that an ASIC could perform. The ability to update the functionality after shipping, partial re-configuration of a portion of the design[1] and the low non-recurring engineering costs relative to an ASIC design (notwithstanding the generally higher unit cost), offer advantages for many applications.
FPGAs contain programmable logic components called "logic blocks", and a hierarchy of reconfigurable interconnects that allow the blocks to be "wired together" somewhat like many logic gates that can be inter-wired in (many) different configurations. Logic blocks can be configured to perform complex combinational functions, or merely simple logic gates like AND and XOR. In most FPGAs, the logic blocks also include memory elements, which may be simple flip-flops or more complete blocks of memory.
FPGA miner hardware:
* X6500 Miner
* Icarus Project
* ModMiner Quad
* BFL single
* Ztex
Category:Hardware
FYB-SE

A Bitcoin currency exchange which operates a BTC/SEK market based in Sweden.
==Trading==
===Buying/selling===
You specify the quantity of Bitcoins you wish to buy/sell at a price.
Once you have submitted a trade, the following chain of events take place : 
 
1. FYB will try to fill your order with other pending orders at the same or better price than you indicated.
In other words if you try to buy 1BTC at 100kr, FYB will attempt to fill your order with the lowest selling price orders up till 100kr.
If there are sell orders below 100kr, you will be filled at a better rate.
 
2. If your entire order is filled, execution stops. If there is a partial fill(ie. only 0.8BTC could be bought at/below 100kr) then the remaining qty is listed as a pending order(Buy Pending Order 0.2BTC at 100kr)
 
==Adding funds==
 
===BTC===
There are no fees incurred when depositing bitcoins for deposit.
Deposited coins require 6 confirmations and are reflected in the account balance on the next login.
 
===SEK===
There is currently 1 supported method for SEK Deposits
====Online Bank Transfer====
A screenshot should always be taken and saved to resolve any potential issues.
 
==Withdrawing funds==
 
===BTC===
Bitcoins may be withdrawn for 0.0005BTC(includes Bitcoin Network fee).
 
===SEK & Others(ie NOK/DKK/EUR etc)===
There is no fee to withdraw SEK to almost any Bank account.
 
==Fees==
A fee of 0.8% is charged in the longed currency of any executed trade.
 
==History==
The exchange was launched on the 1st of July 2013.
 
==See Also==
* Buying bitcoins
* Selling bitcoins
 
==External Links==
* FYB-SE web site
 
==References==
 
Category:Exchanges
Category:EWallets
FYB-SG

A currency exchange which operates a BTC/SGD market based in Singapore.
==Trading==
===Buying/selling===
You specify the quantity of Bitcoins you wish to buy/sell at a price.
Once you have submitted a trade, the following chain of events take place : 
1. FYB will try to fill your order with other pending orders at the same or better price than you indicated. 
In other words if you try to buy 1BTC at $10, Fyb will try to fill your order with the lowest selling price orders up till $10.
If there are sell orders below $10, you will be filled at a better rate. 
2. If your entire order is filled, execution stops. If there is a partial fill(ie. only 0.8BTC could be bought at/below $10) then the remaining qty is listed as a pending order(Buy Pending Order 0.2BTC at $10)
==Adding funds==
===BTC===
There are no fees incurred when depositing bitcoins for deposit.
Deposited coins require 6 confirmations before they are reflected in the account balance.
===SGD===
There are 2 supported methods for SGD Deposits
====Online Bank Transfer====
A screenshot should always be taken and saved to resolve any potential issues.
====Anonymous Cash Deposit at any UOB ATM in Singapore====
A unique account code is to be written on the deposit receipt. 
Depositor is then required to email a picture of the receipt to the exchange within 48hrs.
==Withdrawing funds==
===BTC===
Bitcoins may be withdrawn for 0.0005BTC(Bitcoin Network fee). 
===SGD===
There is no fee to withdraw SGD to a Singapore Bank account. 
==Fees==
A fee of 0.6% is charged in the longed currency of any executed trade.
==History==
The exchange was launched on 3rd January 2013 to coincide with Bitcoin's 4th anniversary.
==See Also==
* Buying bitcoins
* Selling bitcoins
==External Links==
* FYB-SG web site
==References==
Category:Exchanges
Category:EWallets
Farooq Ahmed

Farooq is a self motivated entrepreneur and innovator, who specialises in Information Technology (IT). He helps small and medium sized businesses shape their offerings, products and creates strategies for distribution of them in the digital world.
Obsessed with cryptocurrencies such as bitcoin. Farooq believes that bitcoin can change the world for good. He is also the Chairman of “The Bitcoin Association of Pakistan” that supports the growth of Bitcoin and blockchain companies via their network. Farooq owns a web development & design firm, based in Lahore, Pakistan.
== Early Life ==
Farooq was born in Lahore, Punjab, Pakistan.
== Education ==
Farooq graduated from University of Engineering and Technology Lahore in 2014, majoring in Computer Sciences. He founded Arcift Technologies during his graduation and officially launched the business in June 2014 and started his career as an entrepreneur.
== Career ==
In 2008, Farooq started working online as a freelancer, created some online blogs and did writing gigs. During his graduation, he made websites for people and got paid that led him to found his web development agency in Pakistan.
==== Arcift Technologies ====
A couple years later after going to UET, Farooq started Arcift Technologies, a web development agency, using his tuition fee. The agency design websites for startups and SMEs. Farooq is actively working in the company and helping businesses with their online presence.
==== The Bitcoin Association of Pakistan ====
After the 2017 bull run, Farooq realized the need for a bitcoin community in Pakistan, he started The Bitcoin Association of Pakistan, the community is growing as the interest in crypto expands in the region.
Category:People
FastCash4Bitcoins

FastCash4Bitcoin was a service run by Tangible Cryptography from April, 2012 to May, 2013. FastCash4Bitcoins operated as a direct broker, purchasing bitcoins directly from users. Users could elect payment by a number of fast payout options. The company was a MSB (Money Service Business) registered with FinCEN.
The service was launched on Apr 6, 2012FastCash4Bitcoins: get paid cash today for your bitcoins. Tangible Cryptography LLC was founded by DeathAndTaxes a long time veteran of bitcointalk.org DeathAndTaxes profile including note about Tangible Cryptography LLC. In May, 2013 the site suspended operations, to resolve claims by regulators in Virginia that the activity constituted issuing "stored value" under Virginia statute. Those attempts proved unsuccessful and Tangible Cryptography ceased operating this service. Tangible Cryptography formed a subsidiary incorporated in South Carolina, which operates a similar service under the brand name BitSimple and due to regulatory uncertainty blocks this service from residents of Virginia.
==External Links==
* FastCash4Bitcoins.com (now redirect to BitSimple)
* BitSimple.com
* TangibleCryptography.com
==References==
Category:Defunct exchanges
Category:Services
FastCat BRPC

FastCat BRPC is a Fast and low memory consumption client/frontend for the bitcoind client on any server. This software allows you to connect to any bitcoind service running on any server with an public IP or your local network. You can also use localhost.
This app connects using SSL to your bitcoind server or without SSL your choice. It will send and receive responses using the RPC protocol and will run on any Windows machine.
Currently the app starts in less than 5 seconds and runs in 8 MB or less Ram! Very fast and useful.
Please check back as we are soon launching the Pro version with many many features like a sandbox!!
So if you own a server or VPS running bitcoind or you want to run bitcoind on your local system then this is the software for you!
==Screenshot==
==Features==
* Transaction List
* Automatic balloon notifications of new transactions
* Auto query server for new information
* SSL connection to bitcoind client
* Sending of Bitcoins
* Filtering list of transactions based on sent or received
* Server stats (Connections, Blocks, Balance)
* Run with low memory footprint in taskbar of only 8MB Ram!
* Autostart Minimized with Windows
==Feature Progress of PRO Version==
* Sandbox for sending API calls to server and get response
* Address verification box
* Personal Address Book
==History==
The project was announced on August 9th, 2011Microtronix FastCat BRPC.
==External Links==
* Microtronix FastCat BRPC
* FastCat BRPC on Bitcoin Forums.net
==References==
Category:User Interfaces
Category:Frontends
Fasterco.in

== Fasterco.in Bitcoin Merchant and Trading Service ==
=== Summary ===
Fasterco.in reduces the required number of confirms to deposit to MtGox from 6 to 1, and provides a variety of options for merchants and day-traders to very easily integrate with whatever kind of system they already run.
=== Integration Options ===
* HTTP JSON API
* OpenCart Module
* PHP library
* Node.JS library
* IRC robot in #bitcoin and #bitcoin-otc
=== Fees ===
Unlike other Bitcoin merchant services, Fasterco.in is absolutely FREE for network-standard 6 confirms. For less than 6 confirms, there is a 0.2% fee per block for MtGox AML Verified users and 0.3% fee per block for MtGox AML unverified users.
Category:ECommerce Category:Shopping Cart Interfaces
 Category:Shopping Category:EWallets
 Category:Financial
February 10, 2014 flash crash

On February 10, 2014, the BTC-e bitcoin exchange rate dropped by over $500, crashing from $620 to $102 in seconds, and then rebounding within two minutes. The crash is the result of what appears to be a single person selling at least 6,000 bitcoins significantly below the market price.
The motives of the sale are a subject of debate. As the sale was made with apparently extreme loss, it has been suggested that it was an attempt to manipulate trading bots.
==References==
Category:2014 events
Fee sniping

Fee sniping is a hypothetical outcome of bad incentives to bitcoin mining in the low-inflation future.
For a large miner the value of the transactions in the best block and the mempool can be exceeded by the cost of deliberately attempting to mine two blocks to orphan the best block. However with anti-fee-sniping protection using nLockTime or nSequence the bad miner will soon run out of transactions that can be put in the first block, which means they now need to go in the second. Anti-fee-sniping adds to the incentive to move the blockchain forward.
The nLockTime field is being used this way today. It is implemented in Bitcoin Corehttps://github.com/bitcoin/bitcoin/pull/2340 and Electrumhttps://github.com/spesmilo/electrum/blob/7e6d65ec11c0dccfc24478471c5951d3ae586937/electrum/wallet.py#L211-L224, and adopted by approximately 20% of all transactionshttps://p2sh.info/dashboard/db/blocks-statistics?panelId=4&fullscreen&orgId=1 as of 2021.
As of 2021 the subsidy is high enough, and transaction volume low enough, that fee sniping isn't a problem yet, but by implementing a fix now we ensure code won't be written that makes assumptions about nLockTime that preclude a fix later.
The widespread use of nLockTime and nSequence also provides a greater anonymity set for transactions which use these fields to implement smart contracts. For example if an observer of the block chain sees a spend with an nSequence value, then that could be either: a regular spend from a wallet, or the timelock branch of an off-chain settlement transaction. The two cases would be indistinguishable, and this could greatly improve the privacy and fungibility of bitcoin.
== See Also ==
* https://bitcoinops.org/en/topics/fee-sniping/
==References==
Category:Technical
Category:Mining
Fiat money

Fiat money is government issued currency. For example Euros (EUR), Dollars (USD), Pounds (GBP), Pesos, Rupees, etc.
It is centralized and controlled by governments. Fiat money is a tool of authority to extract value from people through inflation, seigniorage and the Cantillon effect. It is a tool of surveillance and population control. Governments rewards the most obedient with easy and early access to newly printed fiat money and punishes dissenters by blocking access to their accounts.
Fiat money has evolved from printed paper notes to digital accounts held at institutions granted government privilege or license to custody fiat money.
Fiat money is what you exit when you buy Bitcoin.
CBDC (Central Bank Digital Currency) is the final and most insidious form of fiat money, since as programmable money it allows a much higher degree of control, including geofencing, time limits, restrictions on saving, blacklisting, etc. It can potentially lead to ubiquitous law enforcement and facilitate social credit systems.
Finance::MtGox

A Perl module which interfaces with the now defunct Mt. Gox API. It supports both the legacy API and the "key-secret" API (v0).
This open source tool is useful to merchants as it helps determine "market clearing rate". This technique is needed because the number of units offered at the "best bid" or "best ask" are inadequate for a trade of size to execute. Thus the market clearing rate determines the weighted price for the entire trade to execute.
The module was written by the operator of CoinPal and CoinCard and was announced on February 9, 2011MtGox API Perl module
==See Also==
* MtGox/API
==External Links==
* MtGox API Perl module on CPAN
* Finance-MtGox project on GitHub.
==References==
Category:Free Software
Category:License/MIT-X11
Category:Open Source
Firi

Firi is a Norwegian crypto currency exchange, which allows users to exchange NOK for bitcoin and altcoins. Users can connect their Norwegian bank account to the exchange and deposit funds with express payments.
The service is currently limited to Norwegian citizens. All users must have a personal identification number issued by the Norwegian government.
==Exchange==
Firi was founded in 2017, becoming one of the earliest cryptocurrency exchanges to enter the Norwegian market. In 2019 it registered with the Norwegian Financial Authority (Finanstilsynet), as an exchange service for digital currencies. According to Norwegian news website Kryptografen.no, the exchange had more than 170.000 active users per 2022.
==Name change==
September 5th, 2021, the exchange announced it was changing its name from MiraiEx to Firi. The word 'Firi' means lighttower in old norse, and is intended to illustrate the company's profile as a leader within the Norwegian crypto sphere.
===Buy Bitcoin===
Miraiex allows traders to buy bitcoin with the help of either NOK (Norwegian kroner), or altcoins. It has an open-end API for high volume traders that wish to act as market makers.
==Informational links==
Fees info Information on fees for deposits, withdrawals and exchange.
API documentation API instructions for custom applications and how to connect with the exchange service.
==Fees for trading==
Firi charges a flat fee of 0,7% for both sale and buy orders. Users were until recently granted a 5% cashback with each trade which is refunded at the end of the month.
Bank deposits and withdrawals are free.
==History and background==
Firi was conceptualized and founded in 2017, with the first beta version of the service going live in 2018. Founders include Øyvind Kvanes and Thuc Hoang.
An integral part of its service is the ability to buy bitcoin and other cryptocurrencies with the help of "fast payments", in which transfers are credited within 60 minutes. MiraiEx Vurdering - Privatøkonomen.
According to Norwegian tech newspaper ITavisen, in 2021, MiraiEx collected 12 million NOK in a seed round, led by a group of Norwegian investors through a consortium named Skyfall ventures. It was revealed that the platform had more than 40.000 active traders. Since its inception, the platform has processed more than 1,1 Billion NOK in transaction volume, which equals roughly 120 million USDMiraiEx – Norges beste kryptovalutabørs?.
==External Links==
* Firi.com website
==References==
Category:Exchanges
Category:Services
Flexcoin

Flexcoin was an EWallet ran by Flexcoin Inc in Edmonton Alberta Canada.
Flexcoin differentiated itself from EWallets by providing a paid "discount" to account holders. It generated revenue by charging small transaction fees on outgoing bitcoins but no fees were charged from Flexcoin to Flexcoin accounts. These fees were for the most part forwarded back to the account holders. 
Flexcoin was running on an invite only process in June 2011, but invites were filled within minutes of releasing them. 
Flexcoin went live on August 4th, 2011 to the general public.
Flexcoin was sold from Yooter to a group of Edmonton based investors, headed by James Gray on March 14th 2012.
On March 3, 2014, Flexcoin announced it was shutting down as a hack amounting 896 BTC had left the wallet penniless. Users with cold storage wallets on Flexcoin were able to keep the funds out of reach of the hacker.
Flexcoin offers users an alternative to Bitcoin addresses in the form of personalized addresses:
Example : 
Bitcoin: Pay for your coffee at bitcoin address 1555hjPG7pRwTHVMfukPvjXexQMHFE3qu6
flexcoin: Pay for your coffee with flexcoin id coffeeshop
As with most EWallets, transfers within flexcoin were instant, meaning no next block wait.
Flexcoin was one of the first bitcoin eWallets based in the United States and was the first to label itself as a "bank" (though not legally registered as a bank).
==External links==
* flexcoin website
Category:eWallets
Category:Financial
Flood attack

A flood attack is the process of sending thousands of transactions to "flood" the mempool, filling new blocks to the maximum size of 1MB, and subsequently delaying other transactions. It is easy to send transactions to yourself repeatedly, but it is made expensive with transaction fees. An attacker will eventually run out of money. Even if an attacker wants to waste money, transactions are further prioritized by the time since the coins were last spent, so attacks spending the same coins repeatedly are less effective.
Large or distributed flood attacks can fill blocks for days on end, possibly campaigning for raising the blocksize limit.
Category:Technical
Category:Attack vectors
For Bitcoin

Directory of task-oriented services offered for bitcoins.
The marketing slogan is "What Would You Do For A BitCoin?".
This site was announced on June 10, 2011Sell your stuff and services at ForBitcoin.com.
==See Also==
* Freelancers
* BitGigs
* Work For Bitcoin
* Bitcoiners
* BTCworkers Bitcoin freelancing board with payment escrow.
==External Links==
* For Bitcoin web site
==References==
Category:For Hire
Forums

== General Bitcoin Discussion ==
* The Bitcoin Forum. (This is the original Bitcoin Forum, previously on bitcoin.org, where Satoshi Nakamoto used to post.)
* Reddit:
** /r/Bitcoin
** /r/bitcoinbeginners
** (More Bitcoin subreddits)
* TradingView Bitcoin Chat
== Language/Region Specific ==
* Local Forums, including at this time:
** العربية (Arabic)
** Bahasa Indonesia (Indonesian)
** Español (Spanish)
** 中文 (Chinese)
** Hrvatski (Croatian)
** Deutsch (German)
** Ελληνικά (Greek)
** עברית (Hebrew)
** Français
** India
** Italiano (Italian)
** Nederlands (Dutch)
** 한국어 (Korean)
** Philippines
** Polski
** Português (Portuguese)
** Русский (Russian)
** Română (Romanian)
** Skandinavisk
** Türkçe (Turkish)
** Other languages/locations
* List of Reddit local communities
== Other ==
* Bitcoin StackExchange - Q&A site
* Quora - Bitcoin Questions and Answers
* Delving Bitcoin - Developer-minded forum
==See Also==
* Bitcoin_Wiki:Community_portal
FoxyCart

FoxyCart provides a hosted e-commerce platform built for integration into existing systems. FoxyCart’s service is not turnkey or “all in one”, but rather is built for web professionals who already have their own best-of-breed systems. FoxyCart can serve as a foundation for advanced custom e-commerce deployments, or for quick and easy single-product online stores.
==History==
Support for BitPay was first made available on March 13, 2013Official Announcement.
==External Links==
* FoxyCart
* Setup Instructions
==References==
Category:Shopping Cart Interfaces
Fractional Reserve Banking

Fractional Reserve Banking is the practice whereby a bank holds reserves that are a fraction of its on-demand liabilities. It contrasts with a Full Reserve Banking system in which banks must hold reserves for 100% of on-demand liabilities.
Holding only a fraction of on-demand liabilities means that in the event of a bank-run the bank is mathematically unable to meet its obligations.
Put simply: a fractional reserve bank (or exchange) faced with a bank run will not be able to give back 100% of their bitcoins to users and will go bankrupt.
==January 3rd Proof of Keys day==
Every year on January 3rd bitcoiners are encouraged to move their bitcoins to wallets under their full control. By withdrawing from exchanges and other custodians, fractional reserve, "paper bitcoin", ponzis and other frauds are exposed. This makes Bitcoin stronger by removing weak players from the system.
Proof of keys day is based on the "not your keys, not your Bitcoin" and "Don't trust, verify." Bitcoin maxims.