Bitcoin is a worldwide cryptocurrency and digital payment system[13]:3 invented by an unknown programmer, or a group of programmers, under the name Satoshi Nakamoto.[14] It was released as open-source software in 2009.[15]
The system is peer-to-peer, and transactions take place between users directly, without an intermediary.[13]:4 These transactions are verified by network nodes and recorded in a public distributed ledger called a blockchain. Since the system works without a central repository or single administrator, bitcoin is called the first decentralized digital currency.[13]:1[16]
Besides being created as a reward for mining, bitcoin can be exchanged for other currencies,[17] products, and services in legal or black markets.[18][19]
As of February 2015, over 100,000 merchants and vendors accepted bitcoin as payment.[20]According to research produced by Cambridge University in 2017, there are 2.9 to 5.8 million unique users using a cryptocurrency wallet, most of them using bitcoin.[21]
The blockchain is a public ledger that records bitcoin transactions.[30] A novel solution accomplishes this without any trusted central authority: maintenance of the blockchain is performed by a network of communicating nodes running bitcoin software.[13] Transactions of the form payer X sends Y bitcoins to payee Z are broadcast to this network using readily available software applications.[31] Network nodes can validate transactions, add them to their copy of the ledger, and then broadcast these ledger additions to other nodes. The blockchain is a distributed database – to achieve independent verification of the chain of ownership of any and every bitcoin amount, each network node stores its own copy of the blockchain.[32] Approximately six times per hour, a new group of accepted transactions, a block, is created, added to the blockchain, and quickly published to all nodes. This allows bitcoin software to determine when a particular bitcoin amount has been spent, which is necessary in order to prevent double-spending in an environment without central oversight. Whereas a conventional ledger records the transfers of actual bills or promissory notes that exist apart from it, the blockchain is the only place that bitcoins can be said to exist in the form of unspent outputs of transactions.[7]:ch. 5
Transactions[edit]
Transactions are defined using a Forth-like scripting language.[7]:ch. 5 A valid transaction must have one or more inputs.[34] Every input must be an unspent output of a previous transaction. The transaction must carry the digital signature of every input owner. The use of multiple inputs corresponds to the use of multiple coins in a cash transaction. A transaction can also have multiple outputs, allowing one to make multiple payments in one go. A transaction output can be specified as an arbitrary multiple of satoshi. As in a cash transaction, the sum of inputs (coins used to pay) can exceed the intended sum of payments. In such a case, an additional output is used, returning the change back to the payer.[34] Any input satoshis not accounted for in the transaction outputs become the transaction fee.[34]
Transaction fees[edit]
Paying a transaction fee is optional.[34] Miners can choose which transactions to process[34] and prioritize those that pay higher fees. Fees are based on the storage size of the transaction generated, which in turn is dependent on the number of inputs used to create the transaction. Furthermore, priority is given to older unspent inputs.[7]:ch. 8
Mining[edit]
Mining is a record-keeping service.[note 5] Miners keep the blockchain consistent, complete, and unalterable by repeatedly verifying and collecting newly broadcast transactions into a new group of transactions called a block.[30] Each block contains a cryptographic hash of the previous block,[30] using the SHA-256 hashing algorithm,[7]:ch. 7 which links it to the previous block,[30] thus giving the blockchain its name.
In order to be accepted by the rest of the network, a new block must contain a so-called proof-of-work.[30] The proof-of-work requires miners to find a number called a nonce, such that when the block content is hashed along with the nonce, the result is numerically smaller than the network's difficulty target.[7]:ch. 8 This proof is easy for any node in the network to verify, but extremely time-consuming to generate, as for a secure cryptographic hash, miners must try many different nonce values (usually the sequence of tested values is 0, 1, 2, 3, ...[7]:ch. 8) before meeting the difficulty target.
Every 2016 blocks (approximately 14 days at roughly 10 min per block), the difficulty target is adjusted based on the network's recent performance, with the aim of keeping the average time between new blocks at ten minutes. In this way the system automatically adapts to the total amount of mining power on the network.[7]:ch. 8
Between 1 March 2014 and 1 March 2015, the average number of nonces miners had to try before creating a new block increased from 16.4 quintillion to 200.5 quintillion.[36]
The proof-of-work system, alongside the chaining of blocks, makes modifications of the blockchain extremely hard, as an attacker must modify all subsequent blocks in order for the modifications of one block to be accepted.[37] As new blocks are mined all the time, the difficulty of modifying a block increases as time passes and the number of subsequent blocks (also called confirmations of the given block) increases.[30]
Supply[edit]
The successful miner finding the new block is rewarded with newly created bitcoins and transaction fees.[38] As of 9 July 2016,[39] the reward amounted to 12.5 newly created bitcoins per block added to the blockchain. To claim the reward, a special transaction called a coinbase is included with the processed payments.[7]:ch. 8 All bitcoins in existence have been created in such coinbase transactions. The bitcoin protocol specifies that the reward for adding a block will be halved every 210,000 blocks (approximately every four years). Eventually, the reward will decrease to zero, and the limit of 21 million bitcoins[note 6] will be reached c. 2140; the record keeping will then be rewarded by transaction fees solely.[40]
In other words, bitcoin's inventor Nakamoto set a monetary policy based on artificial scarcity at bitcoin's inception that there would only ever be 21 million bitcoins in total. Their numbers are being released roughly every ten minutes and the rate at which they are generated would drop by half every four years until all were in circulation.[41]
Wallets[edit]
A wallet stores the information necessary to transact bitcoins. While wallets are often described as a place to hold[42] or store bitcoins,[43] due to the nature of the system, bitcoins are inseparable from the blockchain transaction ledger. A better way to describe a wallet is something that "stores the digital credentials for your bitcoin holdings"[43] and allows one to access (and spend) them. Bitcoin uses public-key cryptography, in which two cryptographic keys, one public and one private, are generated.[44] At its most basic, a wallet is a collection of these keys.
There are several types of wallets. Software wallets connect to the network and allow spending bitcoins in addition to holding the credentials that prove ownership.[45] Software wallets can be split further in two categories: full clients and lightweight clients.
- Full clients verify transactions directly on a local copy of the blockchain (over 110 GB as of May 2017[46]), or a subset of the blockchain (around 2 GB[47]). Because of its size and complexity, the entire blockchain is not suitable for all computing devices.
- Lightweight clients on the other hand consult a full client to send and receive transactions without requiring a local copy of the entire blockchain (see simplified payment verification – SPV). This makes lightweight clients much faster to set up and allows them to be used on low-power, low-bandwidth devices such as smartphones. When using a lightweight wallet however, the user must trust the server to a certain degree. When using a lightweight client, the server can not steal bitcoins, but it can report faulty values back to the user. With both types of software wallets, the users are responsible for keeping their private keys in a secure place.[48]
Besides software wallets, Internet services called online wallets offer similar functionality but may be easier to use. In this case, credentials to access funds are stored with the online wallet provider rather than on the user's hardware.[49][50] As a result, the user must have complete trust in the wallet provider. A malicious provider or a breach in server security may cause entrusted bitcoins to be stolen. An example of such security breach occurred with Mt. Gox in 2011.[51]
Physical wallets store the credentials necessary to spend bitcoins offline.[43] Examples combine a novelty coin with these credentials printed on metal.[52] Others are simply paper printouts. Another type of wallet called a hardware wallet keeps credentials offline while facilitating transactions.[53]
Reference implementation[edit]
The first wallet program was released in 2009 by Satoshi Nakamoto as open-source code.[15] Sometimes referred to as the "Satoshi client", this is also known as the reference client because it serves to define the bitcoin protocol and acts as a standard for other implementations.[45] In version 0.5 the client moved from the wxWidgets user interface toolkit to Qt, and the whole bundle was referred to as Bitcoin-Qt.[45] After the release of version 0.9, the software bundle was renamed Bitcoin Core to distinguish itself from the network.[54][55] Today, other forks of Bitcoin Core exist such as Bitcoin XT, Bitcoin Classic, Bitcoin Unlimited,[56][57] and Parity Bitcoin.[58]
Ownership[edit]
Ownership of bitcoins implies that a user can spend bitcoins associated with a specific address. To do so, a payer must digitally sign the transaction using the corresponding private key. Without knowledge of the private key, the transaction cannot be signed and bitcoins cannot be spent. The network verifies the signature using the public key.[7]:ch. 5
If the private key is lost, the bitcoin network will not recognize any other evidence of ownership;[13] the coins are then unusable, and effectively lost. For example, in 2013 one user claimed to have lost 7,500 bitcoins, worth $7.5 million at the time, when he accidentally discarded a hard drive containing his private key.[59]
Decentralization[edit]
Bitcoin creator Satoshi Nakamoto designed bitcoin not to need a central authority.[22] Per sources such as the academic Mercatus Center,[13] U.S. Treasury,[10] Reuters,[16] The Washington Post,[19] The Daily Herald,[60] The New Yorker,[61] and others, bitcoin is decentralized.
Privacy[edit]
Bitcoin is pseudonymous, meaning that funds are not tied to real-world entities but rather bitcoin addresses. Owners of bitcoin addresses are not explicitly identified, but all transactions on the blockchain are public. In addition, transactions can be linked to individuals and companies through "idioms of use" (e.g., transactions that spend coins from multiple inputs indicate that the inputs may have a common owner) and corroborating public transaction data with known information on owners of certain addresses.[62] Additionally, bitcoin exchanges, where bitcoins are traded for traditional currencies, may be required by law to collect personal information.[63]
To heighten financial privacy, a new bitcoin address can be generated for each transaction.[64] For example, hierarchical deterministic wallets generate pseudorandom "rolling addresses" for every transaction from a single seed, while only requiring a single passphrase to be remembered to recover all corresponding private keys.[65] Additionally, "mixing" and CoinJoin services aggregate multiple users' coins and output them to fresh addresses to increase privacy.[66] Researchers at Stanford University and Concordia University have also shown that bitcoin exchanges and other entities can prove assets, liabilities, and solvency without revealing their addresses using zero-knowledge proofs.[67]
According to Dan Blystone, "Ultimately, bitcoin resembles cash as much as it does credit cards."[68]
Fungibility[edit]
Wallets and similar software technically handle all bitcoins as equivalent, establishing the basic level of fungibility. Researchers have pointed out that the history of each bitcoin is registered and publicly available in the blockchain ledger, and that some users may refuse to accept bitcoins coming from controversial transactions, which would harm bitcoin's fungibility.[69] Projects such as CryptoNote, Zerocoin, and Dark Wallet aim to address these privacy and fungibility issues.[70][71]
Governance[edit]
Bitcoin was initially led by Satoshi Nakamoto. Nakamoto stepped back in 2010 and handed the network alert key to Gavin Andresen.[72]Andresen stated he subsequently sought to decentralize control stating: "As soon as Satoshi stepped back and threw the project onto my shoulders, one of the first things I did was try to decentralize that. So, if I get hit by a bus, it would be clear that the project would go on."[72] This left opportunity for controversy to develop over the future development path of bitcoin. The reference implementation of the bitcoin protocol called Bitcoin Core obtained competing versions that propose to solve various governance and blocksize debates; as of July 2016, the alternatives were called Bitcoin XT, Bitcoin Classic, and Bitcoin Unlimited.[73]
Scalability[edit]
The blocks in the blockchain are limited to one megabyte in size, which has created problems for bitcoin transaction processing, such as increasing transaction fees and delayed processing of transactions that cannot be fit into a block.[74] Contenders to solve the scalability problem are referred to as Bitcoin Cash, Bitcoin Classic,[75] Bitcoin Unlimited,[76] and SegWit2x.[77] On 21 July 2017 miners locked-in a software upgrade referred to as Bitcoin Improvement Proposal (BIP) 91, meaning that the controversial Segregated Witness upgrade will activate at block # 477,120.[78]
History[edit]
Bitcoin was created[15] by Satoshi Nakamoto,[14] who published the invention[15] on 31 October 2008 to a cryptography mailing list[23] in a research paper called "Bitcoin: A Peer-to-Peer Electronic Cash System".[22] Nakamoto implemented bitcoin as open source code and released in January 2009.[15] The identity of Nakamoto remains unknown, though many have claimed to know it.[14]
In January 2009, the bitcoin network came into existence with the release of the first open source bitcoin client and the issuance of the first bitcoins,[79][80][81][82] with Satoshi Nakamoto mining the first block of bitcoins ever (known as the genesis block), which had a reward of 50 bitcoins.
One of the first supporters, adopters, contributor to bitcoin and receiver of the first bitcoin transaction was programmer Hal Finney. Finney downloaded the bitcoin software the day it was released, and received 10 bitcoins from Nakamoto in the world's first bitcoin transaction.[83][84] Other early supporters were Wei Dai, creator of bitcoin predecessor b-money, and Nick Szabo, creator of bitcoin predecessor bit gold.[85]
In the early days, Nakamoto is estimated to have mined 1 million bitcoins.[86] Before disappearing from any involvement in bitcoin, Nakamoto in a sense handed over the reins to developer Gavin Andresen, who then became the bitcoin lead developer at the Bitcoin Foundation, the 'anarchic' bitcoin community's closest thing to an official public face.[87]
The value of the first bitcoin transactions were negotiated by individuals on the bitcointalk forums with one notable transaction of 10,000 BTC used to indirectly purchase two pizzas delivered by Papa John's.[79]
On 6 August 2010, a major vulnerability in the bitcoin protocol was spotted. Transactions were not properly verified before they were included in the blockchain, which let users bypass bitcoin's economic restrictions and create an indefinite number of bitcoins.[88][89] On 15 August, the vulnerability was exploited; over 184 billion bitcoins were generated in a transaction, and sent to two addresses on the network. Within hours, the transaction was spotted and erased from the transaction log after the bug was fixed and the network forked to an updated version of the bitcoin protocol.[90][88][89]
Economics[edit]
Classification[edit]
Bitcoin is a digital asset[91] designed by its inventor, Satoshi Nakamoto, to work as a currency.[22][92] It is commonly referred to with terms like digital currency,[13]:1 digital cash,[93] virtual currency,[9] electronic currency,[25] or cryptocurrency.[94]
The question whether bitcoin is a currency or not is still disputed.[94] Bitcoins have three useful qualities in a currency, according to The Economist in January 2015: they are "hard to earn, limited in supply and easy to verify".[95] Economists define money as a store of value, a medium of exchange, and a unit of account and agree that bitcoin has some way to go to meet all these criteria.[96] It does best as a medium of exchange; as of February 2015 the number of merchants accepting bitcoin had passed 100,000.[20] As of March 2014, the bitcoin market suffered from volatility, limiting the ability of bitcoin to act as a stable store of value, and retailers accepting bitcoin use other currencies as their principal unit of account.[96]
General use[edit]
According to research produced by Cambridge University in 2017, there are between 2.9 million and 5.8 million unique users using a cryptocurrency wallet, most of them using bitcoin. The number of users has grown significantly since 2013, when there were 0.3 to 1.3 million users.[21]
Acceptance by merchants[edit]
In 2015, the number of merchants accepting bitcoin exceeded 100,000.[20] Instead of 2–3% typically imposed by credit card processors, merchants accepting bitcoins often pay fees in the range from 0% to less than 2%.[97] Firms that accepted payments in bitcoin as of December 2014 included PayPal,[98] Microsoft,[99] Dell,[100] and Newegg.[101]
Payment service providers[edit]
Merchants accepting bitcoin ordinarily use the services of bitcoin payment service providers such as BitPay or Coinbase. When a customer pays in bitcoin, the payment service provider accepts the bitcoin on behalf of the merchant, converts it to the local currency, and sends the obtained amount to merchant's bank account, charging a fee for the service.[102]
Financial institutions[edit]
Bitcoin companies have had difficulty opening traditional bank accounts because lenders have been leery of bitcoin's links to illicit activity.[103] According to Antonio Gallippi, a co-founder of BitPay, "banks are scared to deal with bitcoin companies, even if they really want to".[104] In 2014, the National Australia Bank closed accounts of businesses with ties to bitcoin,[105] and HSBC refused to serve a hedge fund with links to bitcoin.[106] Australian banks in general have been reported as closing down bank accounts of operators of businesses involving the currency;[107] this has become the subject of an investigation by the Australian Competition and Consumer Commission.[107] Nonetheless, Australian banks have keenly adopted the blockchain technology on which bitcoin is based.[108]
In a 2013 report, Bank of America Merrill Lynch stated that "we believe bitcoin can become a major means of payment for e-commerce and may emerge as a serious competitor to traditional money-transfer providers."[109] In June 2014, the first bank that converts deposits in currencies instantly to bitcoin without any fees was opened in Boston.[110]
As an investment[edit]
Some Argentinians have bought bitcoins to protect their savings against high inflation or the possibility that governments could confiscate savings accounts.[63] During the 2012–2013 Cypriot financial crisis, bitcoin purchases in Cyprus rose due to fears that savings accounts would be confiscated or taxed.[111]
The Winklevoss twins have invested into bitcoins. In 2013 The Washington Post claimed that they owned 1% of all the bitcoins in existence at the time.[112]
Other methods of investment are bitcoin funds. The first regulated bitcoin fund was established in Jersey in July 2014 and approved by the Jersey Financial Services Commission.[113] Forbes started publishing arguments in favor of investing in December 2015.[114]
In 2013 and 2014, the European Banking Authority[115] and the Financial Industry Regulatory Authority (FINRA), a United States self-regulatory organization,[116] warned that investing in bitcoins carries significant risks. Forbes named bitcoin the best investment of 2013.[117] In 2014, Bloomberg named bitcoin one of its worst investments of the year.[118] In 2015, bitcoin topped Bloomberg's currency tables.[119]
According to Bloomberg, in 2013 there were about 250 bitcoin wallets with more than $1 million worth of bitcoins. The number of bitcoin millionaires is uncertain as people can have more than one wallet.[120]
Venture capital[edit]
Venture capitalists, such as Peter Thiel's Founders Fund, which invested US$3 million in BitPay, do not purchase bitcoins themselves, instead funding bitcoin infrastructure like companies that provide payment systems to merchants, exchanges, wallet services, etc.[121] In 2012, an incubator for bitcoin-focused start-ups was founded by Adam Draper, with financing help from his father, venture capitalist Tim Draper, one of the largest bitcoin holders after winning an auction of 30,000 bitcoins,[122] at the time called 'mystery buyer'.[123] The company's goal is to fund 100 bitcoin businesses within 2–3 years with $10,000 to $20,000 for a 6% stake.[122] Investors also invest in bitcoin mining.[124] According to a 2015 study by Paolo Tasca, bitcoin startups raised almost $1 billion in three years (Q1 2012 – Q1 2015).[125]
Price and volatility[edit]
According to Mark T. Williams, as of 2014, bitcoin has volatility seven times greater than gold, eight times greater than the S&P 500, and 18 times greater than the U.S. dollar.[126] According to Forbes, there are uses where volatility does not matter, such as online gambling, tipping, and international remittances.[127]
The price of bitcoins has gone through various cycles of appreciation and depreciation referred to by some as bubbles and busts.[128][129] In 2011, the value of one bitcoin rapidly rose from about US$0.30 to US$32 before returning to US$2.[130] In the latter half of 2012 and during the 2012–13 Cypriot financial crisis, the bitcoin price began to rise,[131] reaching a high of US$266 on 10 April 2013, before crashing to around US$50.[132] On 29 November 2013, the cost of one bitcoin rose to a peak of US$1,242.[133] In 2014, the price fell sharply, and as of April remained depressed at little more than half 2013 prices. As of August 2014 it was under US$600.[134] In January 2015, noting that the bitcoin price had dropped to its lowest level since spring 2013 – around US$224 – The New York Times suggested that "[w]ith no signs of a rally in the offing, the industry is bracing for the effects of a prolonged decline in prices. In particular, bitcoin mining companies, which are essential to the currency's underlying technology, are flashing warning signs."[135] Also in January 2015, Business Insider reported that deep web drug dealers were "freaking out" as they lost profits through being unable to convert bitcoin revenue to cash quickly enough as the price declined – and that there was a danger that dealers selling reserves to stay in business might force the bitcoin price down further.[136]
According to The Wall Street Journal, as of April 2016, bitcoin is starting to look slightly more stable than gold.[137] On 3 March 2017, the price of a bitcoin surpassed the market value of an ounce of gold for the first time as its price surged to an all-time high.[138][139] A study in Electronic Commerce Research and Applications, going back through the network's historical data, showed the value of the bitcoin network as measured by the price of bitcoins, to be roughly proportional to the square of the number of daily unique users participating on the network. This is a form of Metcalfe's law and suggests that the network was demonstrating network effects proportional to its level of user adoption.[140]
TAGS
/etc/init.d/bitcoind
/r/bitcoin stats
0 25 bitcoins
0.05 bitcoin in euro
0.1 bitcoins
0.15 bitcoins
0.21 bitcoins
1 bitcoin =
1 bitcoin in 2010
1 bitcoin in inr
1 bitcoin in usd in 2010
1 bitcoin to cad
1 bitcoin to dollar
1 bitcoin to naira
1 bitcoin to us dollars
1 bitcoin to usd
1 bitcoin worth
10th/s bitcoin miner
1th/s bitcoin miner
2 bitcoin price
2 bitcoin qt
2 bitcoin to inr
2 bitcoin to usd
2 bitcoin wallets
2 bitcoins a month
2 bitcoins free
2 bitcoins to dollars
20th/s bitcoin miner
3 bitcoin in euro
3 bitcoin to eur
3 bitcoins
3 bitcoins in gbp
3 bitcoins to usd
4 bitcoin to eur
4 bitcoins in gbp
4 bitcoins to usd
5 bitcoin free
5 bitcoin in euro
5 bitcoin to cad
5 bitcoins to usd
6 bitcoin network confirmations
6 bitcoins in euro
6 bitcoins in usd
7 bitcoin casino
7 bitcoin in euro
7 bitcoin in sterling
7 bitcoin to usd
7 bitcoins in dollars
8 bit bitcointalk
8 bitcoin in euro
8 bitcoins to usd
9 000 bitcoin
9 bitcoins
9 bitcoins to usd
9 euro in bitcoin
9 famous bitcoin addresses
99.9 bitcoin
a bitcoin address
a bitcoin believers crisis of faith
a bitcoin block
a bitcoin client
a bitcoin governance network
a bitcoin miner
a bitcoin primer
a bitcoin to a dollar
a bitcoin to naira
a bitcoin wallet
alpha-t bitcointalk
avalon 6 bitcoin
b&h bitcoin
b-eleven bitcoin
b-wallet bitcoin
bb&t bitcoin
best b#$*h - bitcoin
best b#$*h - bitcoin lyrics
bh f bitcoin
bip 9 bitcoin
bitcoin
bitcoin 0 active connections
bitcoin 0 confirmations
bitcoin 0 fee
bitcoin 0 transaction fee
bitcoin 0.01
bitcoin 0.1
bitcoin 0.12
bitcoin 0.14
bitcoin 0.14.1
bitcoin 0.14.2
bitcoin 0/unconfirmed in memory pool
bitcoin 1 million
bitcoin 10 year chart
bitcoin 100
bitcoin 100 000
bitcoin 100 dollars
bitcoin 10000
bitcoin 100k
bitcoin 101
bitcoin 10k
bitcoin 148
bitcoin 2 paypal
bitcoin 2 year chart
bitcoin 2.0
bitcoin 2009
bitcoin 2010
bitcoin 2011
bitcoin 2012
bitcoin 2013
bitcoin 2017
bitcoin 2018
bitcoin 2020
bitcoin 2025
bitcoin 3 address
bitcoin 3 confirmations
bitcoin 3 day chart
bitcoin 3 month chart
bitcoin 3 unlimited
bitcoin 3 year chart
bitcoin 300
bitcoin 3000
bitcoin 30000
bitcoin 35 million
bitcoin 365 club
bitcoin 3k
bitcoin 3x etf
bitcoin 4 cash
bitcoin 4 euro
bitcoin 4 igaming
bitcoin 4 million
bitcoin 4 november
bitcoin 4 u
bitcoin 4 year chart
bitcoin 4 years ago
bitcoin 4.4 million
bitcoin 4000
bitcoin 40000
bitcoin 401k
bitcoin 401k rollover
bitcoin 4chan
bitcoin 4k
bitcoin 5 day chart
bitcoin 5 min
bitcoin 5 minutes
bitcoin 5 unlimited generator
bitcoin 5 year chart
bitcoin 5 year prediction
bitcoin 5 years
bitcoin 5 years ago
bitcoin 500
bitcoin 500 000
bitcoin 5000
bitcoin 50000
bitcoin 51 attack
bitcoin 5dimes
bitcoin 6 cents
bitcoin 6 confirmations
bitcoin 6 confirmations time
bitcoin 6 month
bitcoin 6 month chart
bitcoin 6 month price
bitcoin 6 year chart
bitcoin 6 years ago
bitcoin 6 years behind
bitcoin 60 day chart
bitcoin 60 minutes
bitcoin 6000
bitcoin 666
bitcoin 7 day chart
bitcoin 7 eleven
bitcoin 7 transactions per second
bitcoin 7 years
bitcoin 7 years ago
bitcoin 7-11
bitcoin 70 million
bitcoin 711
bitcoin 72 million
bitcoin 72.9 million
bitcoin 73 million
bitcoin 75 million
bitcoin 8 active connections
bitcoin 8 connections
bitcoin 8 decimal places
bitcoin 8 million
bitcoin 8 years ago
bitcoin 8 years behind
bitcoin 8/1
bitcoin 80
bitcoin 800
bitcoin 800 number
bitcoin 8333
bitcoin 8949
bitcoin 8mb
bitcoin 8nv
bitcoin 9 banks
bitcoin 9 confirmations
bitcoin 9 million garbage
bitcoin 90 day chart
bitcoin 9000
bitcoin 94fbr
bitcoin 980 gtx
bitcoin 980 ti
bitcoin 99
bitcoin 99 faucet
bitcoin 9arm
bitcoin 9gag
bitcoin abc
bitcoin ac id
bitcoin account
bitcoin address
bitcoin all time high
bitcoin and blockchain
bitcoin app
bitcoin asic
bitcoin atm
bitcoin atm arizona
bitcoin atm near me
bitcoin atm phoenix
bitcoin b font
bitcoin b symbol
bitcoin bank
bitcoin baron
bitcoin billionaire
bitcoin block explorer
bitcoin blockchain
bitcoin blockchain size
bitcoin bot
bitcoin brain
bitcoin bubble
bitcoin buy
bitcoin by paypal
bitcoin c sharp
bitcoin c==
bitcoin calculator
bitcoin cash
bitcoin cash news
bitcoin cash wallet
bitcoin casino
bitcoin chart
bitcoin core
bitcoin crash
bitcoin creator
bitcoin currency
bitcoin current value
bitcoin dark
bitcoin day trading
bitcoin debit card
bitcoin debit card usa
bitcoin definition
bitcoin dice
bitcoin documentary
bitcoin dollar
bitcoin download
bitcoin drop
bitcoin e card
bitcoin e commerce
bitcoin e money
bitcoin e pill
bitcoin e wallet
bitcoin e-currency
bitcoin e-voucher
bitcoin e.g. crossword
bitcoin e.g. crossword clue
bitcoin ebay
bitcoin ebook
bitcoin etf
bitcoin ethereum
bitcoin ethereum price
bitcoin exchange
bitcoin exchange rate usd
bitcoin exchange usd
bitcoin exchanges in the us
bitcoin explained
bitcoin explorer
bitcoin farming
bitcoin faucet
bitcoin fees
bitcoin for sale
bitcoin forecast
bitcoin fork
bitcoin forum
bitcoin founder
bitcoin fund
bitcoin future
bitcoin games
bitcoin gemini
bitcoin generator
bitcoin gift card
bitcoin github
bitcoin gold
bitcoin graph
bitcoin graph usd
bitcoin growth
bitcoin guide
bitcoin guiminer
bitcoin h/s
bitcoin hack
bitcoin hack v.2
bitcoin halving
bitcoin hard fork
bitcoin hardware
bitcoin hardware wallet
bitcoin hashrate
bitcoin historical chart
bitcoin historical price
bitcoin history
bitcoin how to buy
bitcoin images
bitcoin in usd
bitcoin index
bitcoin india
bitcoin inventor
bitcoin investment
bitcoin investment trust
bitcoin investment trust stock
bitcoin ipo
bitcoin ira
bitcoin irs
bitcoin j
bitcoin j vty
bitcoin japan
bitcoin japan exchange
bitcoin japan legal
bitcoin japan news
bitcoin jesus
bitcoin jobs
bitcoin joe rogan
bitcoin jokes
bitcoin july 2017
bitcoin june 2017
bitcoin k
bitcoin k chart
bitcoin k line
bitcoin k value
bitcoin k-market
bitcoin key
bitcoin keychain
bitcoin khan academy
bitcoin kiosk
bitcoin kiosk near me
bitcoin knots
bitcoin knowledge
bitcoin korea
bitcoin kraken
bitcoin kurs
bitcoin l'altra faccia della moneta
bitcoin l-39
bitcoin latest news
bitcoin ledger
bitcoin legal
bitcoin lending
bitcoin live price
bitcoin loan
bitcoin locations
bitcoin login
bitcoin logo
bitcoin lottery
bitcoin m of n transactions
bitcoin m-pesa
bitcoin machine
bitcoin machine near me
bitcoin magazine
bitcoin market cap
bitcoin millionaire
bitcoin miner t720
bitcoin miner-c pup
bitcoin miner.b
bitcoin miner.g
bitcoin miner.u
bitcoin miner.w
bitcoin miners
bitcoin mining
bitcoin mining hardware
bitcoin mining pool
bitcoin mining rig
bitcoin mining software
bitcoin n.ireland
bitcoin nasdaq
bitcoin net worth
bitcoin network
bitcoin network fee
bitcoin news
bitcoin news india
bitcoin news reddit
bitcoin node
bitcoin now
bitcoin nyse
bitcoin o'reilly
bitcoin o'reilly pdf
bitcoin of america
bitcoin official site
bitcoin offline wallet
bitcoin online
bitcoin online wallet
bitcoin options
bitcoin or ethereum
bitcoin outlook
bitcoin owner
bitcoin paper wallet
bitcoin phoenix
bitcoin pizza
bitcoin predictions
bitcoin price
bitcoin price chart
bitcoin price history
bitcoin price prediction
bitcoin profit calculator
bitcoin projections
bitcoin purchase
bitcoin q
bitcoin q es
bitcoin q significa
bitcoin qr code
bitcoin qr code scanner
bitcoin qt
bitcoin qt update
bitcoin quantum
bitcoin quantum computers
bitcoin que es
bitcoin questions
bitcoin quora
bitcoin quote
bitcoin rate
bitcoin real time
bitcoin reddit
bitcoin regulation
bitcoin review
bitcoin rich list
bitcoin rig
bitcoin rise
bitcoin risk
bitcoin rival
bitcoin s curve
bitcoin segwit
bitcoin services inc
bitcoin split
bitcoin stock
bitcoin stock chart
bitcoin stock market
bitcoin stock price
bitcoin stock ticker
bitcoin store
bitcoin symbol
bitcoin t shirt
bitcoin t shirt india
bitcoin t shirt store
bitcoin t shirt uk
bitcoin taxes
bitcoin ticker
bitcoin to aud
bitcoin to btc
bitcoin to euro
bitcoin to gbp
bitcoin to inr
bitcoin to paypal
bitcoin to usd
bitcoin trading
bitcoin transaction
bitcoin transaction fee
bitcoin trend
bitcoin u bosni
bitcoin u crnoj gori
bitcoin u dinarima
bitcoin u kune
bitcoin uasf
bitcoin uncensored
bitcoin unconfirmed transaction
bitcoin unicode
bitcoin unlimited
bitcoin unlimited price
bitcoin update
bitcoin usa
bitcoin usd
bitcoin uses
bitcoin v blockchain
bitcoin v dollar
bitcoin v euro
bitcoin v gold
bitcoin v litecoin
bitcoin v onecoin
bitcoin value
bitcoin value 2020
bitcoin value in 2009
bitcoin visa
bitcoin volatility
bitcoin vs bitcoin cash
bitcoin vs ethereum
bitcoin vs gold
bitcoin vs litecoin
bitcoin vs usd
bitcoin w chinach
bitcoin w chmurze
bitcoin w górę
bitcoin w niemczech
bitcoin w polsce
bitcoin w polsce legalny
bitcoin w prawie polskim
bitcoin w żabce
bitcoin wallet
bitcoin wallet address
bitcoin wallet app
bitcoin wallet online
bitcoin website
bitcoin what is it
bitcoin whitepaper
bitcoin wiki
bitcoin winklevoss
bitcoin xapo
bitcoin xbox
bitcoin xbt
bitcoin xe
bitcoin xmr
bitcoin xpub
bitcoin xrp
bitcoin xt
bitcoin xt d
bitcoin xt price
bitcoin y control de cambio
bitcoin y deep web
bitcoin y el lavado de dinero
bitcoin y lavado de dinero
bitcoin y litecoin
bitcoin yahoo finance
bitcoin year
bitcoin year started
bitcoin yearly chart
bitcoin yellow paper
bitcoin yen
bitcoin yes or no
bitcoin youtube
bitcoin ytd
bitcoin ytd return
bitcoin z value
bitcoin zapwallettxes
bitcoin zcash
bitcoin zebpay
bitcoin zebra
bitcoin zero
bitcoin zero confirmations
bitcoin zero knowledge proof
bitcoin zerohedge
bitcoin zhihu
bitcoin zimbabwe
bitcoin.d
bitcoin.n
bitcoind backup
bitcoinj micropayments
bitcoinj tutorial
bitcoins 4 backpage
bitcoins 6 months
bitcoins que significa
bitcoins value
bitcoinspot.n
bitcointalk
bitcointalk c-cex
bitcoinwisdom
bitcoiny w polsce
brother john f bitcoin
buy bitcoin
c bitcoin library
c bitcoin miner
c bitcoin wallet
c&h bitcoin
c't bitcoin
capital b bitcoin
co z bitcoinem
coins.h bitcoin
d las vegas bitcoin
d'angelo bitcoin
d-wave bitcoin mining
debian 8 bitcoin
ecuador y bitcoin
f# bitcoin
g bitcoin charts
g bitcoin mining calculator
g bitcoin price
g bitcoin value
g cash to bitcoin
g coin bitcointalk
gh/s bitcoin
ghash bitcoin
h&r block bitcoin
h-not-zero bitcoin
hash.h bitcoin
i bitcoin = satoshi
i bitcoin in indian rupees
i bitcoin in rs
i bitcoin is equal to
i bitcoin to dollar
i bitcoin to inr
i bitcoin to naira
i bitcoin to pkr
i bitcoin to usd
i bitcoin trading
init.d bitcoind
j maurice bitcoin
j p morgan bitcoin
john k bitcoin
k čemu bitcoin
k-market jätkäsaari bitcoin
l'ambassade bitcoin
l'avenir des bitcoins
l'avenir du bitcoin
l'histoire du bitcoin
l'inventeur du bitcoin
l'origine du bitcoin
l'évolution du bitcoin
l-39 bitcoin jet
m get bitcoin
m lhuillier bitcoin
m of n bitcoin
m pesa vs bitcoin
m.bitcoin2048
m.bitcoin2048.com отзывы
main.h bitcoin
mary j bitcoin
mary j bitcoin belle
mary j bitcointalk
mel b bitcoin
mercado bitcoin
mh/s bitcoin
msil bitcoin miner-f
n&p bitcoin consulting
nakup zlata z bitcoini
nvidia titan z bitcoin
nvidia titan z bitcoin mining
o bitcoin e seguro
o bitcoinu
o'reilly bitcoin and the blockchain
p np bitcoin
p-free bitcoin
piotr_n bitcoin
piotr_n bitcointalk
plan b bitcoin
price of bitcoin
q comprar con bitcoins
q es el bitcoin
q es un bitcoin
q son bitcoins
q son los bitcoins
r bitcoin canada
r bitcoin mining
r bitcoin package
r bitcoin videos
r bitcoinmarkets
r bitcoinwisdom
r.i.p. bitcoin
r/bitcoin beg
r/bitcoinmining
r/bitcoinxt
shares in bitcoin
siriusxm bitcoin
sklep z bitcoinami
sve o bitcoin
system d bitcoin
t-110 bitcoin mining system
th/s bitcoin
th/s bitcoin miner
the d bitcoin atm
titan z bitcoin
titan z bitcoin mining
trgovanje z bitcoini
triple m bitcoin
u.s. bitcoin exchange
utorrent bitcoin
why u bitcoin billionaire
wii u bitcoin
win32/bitcoinminer.p
windows 7 bitcoin miner
windows 8 bitcoin miner
x bitcoin generator
y combinator bitcoin
ybitcoin magazine
z cash bitcoin
обменник bitcoin
No comments:
Post a Comment