Tag Archives: bitcoin

michael novograts 2

Investor Mike Novogratz has a very simple argument for why he’s bullish on Bitcoin

(BusinessInsider) Former Goldman Sachs partner and current Fortress Investment Group CIO
Michael Novogratz says the smartest guys in the room have all turned
their attention to Bitcoin.
In an interview Monday with Bloomberg Television’s Stephanie Ruhle at
the 2014 Sohn investing conference, Novogratz explained how Bitcoin has
grown to capture the imaginations of programmers from its libertarian
roots:

There are in best estimates somewhere
30,000 individual programmers working on Bitcoin. My college roommate
lives down in Barbados. He was the smartest guy that we went to school
with [Novogratz graduated from Princeton — ed.]. He full time works on
derivatives of Bitcoin. So there’s this open source community where
there’s huge brain power, let alone all the VC money that’s going in.
And so from Marc Andreessen and his company to Benchmark… there’s lots
of smart money going in. I’ve never seen a small project with more human
capital going into it, and so I kind of want to bet just on that
alone.”

Ruhle pressed him on whether Bitcoin could simply flame out.
Novogratz responded by saying it would lead to the “democratization of
finance.”

I think you’re going to see things like
peer-to-peer lending. The banks are – their biggest I think threat is
the same thing that’s happened in so many other industries now happening
to the finance industry, right? The Internet disintermediates large
players and I think Bitcoin is just one of the threats that the finance
industry the way we know it has coming against it.

Fortress is sitting on $13 million-worth of bitcoins. In February, the firm became the first publicly-traded company to file Bitcoin holdings (they were listed as losses).

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Satoshi

What is a Bitcoin address and how do you sign it?

(BitcoinMagazineShort Answer: A Bitcoin address is a unique number that “holds” bitcoin currency. You use the address to receive and send bitcoins.
 
Medium Sized Answer: A Bitcoin address is the publickey half of the public-private key pair that enables the validation of ownership of that address. WHOAH there, what in tarnation does that mean??
Bitcoin addresses are created as part of a key generation process that creates a pair of keys. They are a matched set, where one is public and the other is private. When you “sign” a bitcoin address you are running the public and private keys through an algorithm that checks to see that those keys belong together. Usually signing is talked about in the context of a message. Someone sends you a signed message and you can verify that the message came from the genuine person. You can verify the
message because it was signed with their private key and you match it to their public key. When sending bitcoins the signed message is a portion of the bitcoin transaction and you do not explicitly see the message, it is just part of the transaction. This lets you validate the ownership of the address. The transaction (the transfer of value) was signed with the owner’s private key and you check that it’s valid using their public key.
A little diversion – public key cryptography is a really cool technology developed in the mid 1970′s. The amazing thing about
public-private key pairs is that everyone can know the public key and the owner of the private key can prove that he is the owner of the message sent with the associated public key. For more information on PKI (Public Key Infrastructure) upon which much of bitcoin’s security is based see Mike Hearn’s (a core bitcoin developer) great description of many issues in “Why you think the PKI sucks…but can’t do any better“.
 
 

A Longer Story: Let look at the sequence of actions to create and then use the key pairs. First we need to generate the key pair, which will result in two keys the public and private keys. The Bitcoin address is actually a form of the public key (it’s a hash of the public key).
From the Bitcoin protocol specification at: https://en.bitcoin.it/wiki/Protocol_specification#Signatures
A bitcoin address is in fact the hash of a ECDSA public key. Since anyone can know the public key and really the Bitcoin address is the public key, it’s perfectly OK to give out the Bitcoin address.
So now we have a Bitcoin address, what’s next?
Let’s say that I want to get paid for something, say writing this article! I can advertise a Bitcoin address, and since you are all so
thrilled to read this, you have an overwhelming urge to send me some coins. You would open up your Bitcoin wallet, enter my address as the address to send bitcoins to; click send; and I would happily receive some bitcoins.
Recall that I and only I have the private key matching the public key (address) which enables me to be the only person that could spend the bitcoins I just received.
If you wanted to double check that I was actually the owner of the address before you sent me coins you could ask that I send a signed message associated with address proving it’s mine. I could create a message and sign the address. You would then take the message I sent, and put it into your wallet along with my address to prove that I am the “owner” of the address. Bitcoin wallets usually contain this message signing and verification functionality.
An address is used to “hold” bitcoins, however the concept of an address holding bitcoins or that you are the “owner” of a Bitcoin address is a misnomer. Recall that the address is one half of a public-private keypair. The reason you “own” an address and have control over the coins associated with that address is simply that you also know the other half of the public-private key pair, the private key. If someone else learns the private key to an address then that person has just as much control and “ownership” over the address, as you. In other words that person can spend your bitcoins. The solution is quite simple, make sure you and only you control the public keys to your bitcoin addresses. From a practical point of view this means that you create a good, not easy to guess, Bitcoin wallet password, and/or keep it in a safe place. Some excellent security practices are outlined at the Bitcoin Foundation’s site at: https://bitcoin.org/en/secure-your-wallet.
Since Bitcoin addresses are one of the cornerstones to using Bitcoin, it is instructive to play around with addresses to get a better understanding of just what exactly a Bitcoin address is all about. A particularly good website to play around with is bitaddress.org. After generating a new Bitcoin address play around with the various options and observe the public and private keys it generates. Just don’t go putting real bitcoins into an address while also displaying the private key. Keep the private key private!

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Satoshi

The roads to innovation in cryptocurrencies

Research

(BITSLOG) Once upon a time there was Bitcoin
and nothing else. History was being written by Satoshi and a few
illuminated minds that posted the most interesting ideas in the
Bitcointalk forums and IRC channels. Almost every cryptocurrency idea
I’ve heard of had a seed in some of these heated online discussions.
During 2009 improving every part of Bitcoin seemed to at the reach of
the hand: changing the scripting system, the proof-of-work function, the
block format and more. Then the conservative era begun: Bitcoin value
had risen considerably and much more money was at stake. So there was no
room for destabilizing changes anymore. During 2010 ideas were still
discussed, but not implemented. But as powerful ideas cannot be
contained so during 2011 alt-coins came into existence. Apart from Namecoin,
which was something different than a mere cryptocurrency, the first
alt-coin code changes were all minor; only the economic constants, such
as the money supply, were changed (Devcoin, lxcoin, l0coin). Multicoin
allowed simultaneous management of multiple block-chains, mainly to
experiment with different economic constants. Soon other more extensive
changes appeared, such as using another proof-of-work function (Tenebrix, FairBrix, Litecoin).
All these projects changed no more than a hundred lines of the parent
Bitcoin fork. During 2012 cryptocurrencies started making deeper changes
in the code, using proof-of-stake instead of proof-of-work (PPCoin, NovaCoin, PeerCoin).
But still no cryptocurrency took more than a month of work to be
programmed, since there was no business model that could pay for the
development of entire new codebases.   Pre-mining was seen as a scam
rather than an investment in the development team, since no profound
innovation had been achieved and no codebase had been started from
scratch.
The first non-Bitcoin based currencies were created during 2013 (Ripple, Nxt, MasterCoin, Counterparty). Three promising new cryptocurrencies will be launched during 2014:  NimbleCoin, BitSharses and Ethereum.
With the exception of NimbleCoin, all non-Bitcoin based currencies
adopted either an IPO business model or the pre-mine business model to
pay the founders and support the development after launch. NimbleCoin
seems to be the only one that still tries to bootstrap based on an
equal opportunity for all members of the community. Some of these
currencies (often called “2.0″) add new features not related to
payments: Smart contracts, betting, prediction markets, shares,
distributed exchanges, user defined assets, contracts for difference,
dividends, Decentralized Autonomous Organizations (DAOs), distributed
storage and gaming. Innovation seems to have been primary directed to
provide a more extensible cryptocurrency and more features. Nevertheless
this may not be what users require today. To be accepted world-wide,
users will demand cryptocurrencies to satisfy their everyday needs in
term of usability. They will demand the cryptocurrency to allow them buy
some croissants in the local shop with a standard smartphone in a few
seconds so they can keep walking without even worrying about transaction
confirmation time. Also, considering the deflationary properties of
Bitcoin, and the expected rise in fees, users will soon demand lower
transaction fees, which is also strongly tied to better scalability and
lower mining energy waste. Energy efficiency will also be demanded for
ecological reasons. More experience users will demand higher transaction
privacy and more politicized users will demand higher decentralization.
As I see the ecosystem right now, these are the main improvements users
will demand, more than any new embedded financial instrument. Here is
my wish list in order of importance:

  1. More merchants accepting the coins (specially retail stores)
  2. Lower price volatility
  3. Faster payment confirmations
  4. Lower fees (more transactions per second)
  5. Less energy waste in mining
  6. More decentralized
  7. More private
  8. More features
  9. More extensible

It’s interesting that the two last innovation areas, which in my
opinion are the less solicited by the general public, are the ones where
most money and time has been invested. This may be because they are the
most “geeky” and futuristic use cases. To summarize I present diagram
with the current roads to innovation in cryptocurrencies. Bitcoin it is a
very well-balanced and conservative design and it’s plotted right in
the middle. I tried to plot how the current and past cryptocurrencies
have positioned themselves in the innovation landscape. In each category
I have chosen the most innovative ones and highlighted the best
cryptocurrency (IMHO). Note that Ripple is not part of the comparison
because it still relies on private servers and so it has an unfair
advantage. If it were truly open and yet secure, it will probably win in
most categories. Also note that faster payments confirmations is not
equal to lower block intervals: certain coins with low block intervals
have greater confirmation times because of stale block rate and frequent
chain undoes (such as Quark). When comparing new features, I’m
comparing cryptocurrencies with the features built-in and supported by
the core development team. Ethereum can emulate practically every
feature, but special scripts must be developed and maintained for each
feature added, so it wasn’t chosen in that category. There is another
category I haven’t included because it has too few members, which is
“More Security”. It comprises mainly the GHOST protocol.

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Satoshi
alarm clock time 600x370

Is it too late to get Involved in Bitcoin?

(CoinDesk) So, you’ve only just learned about bitcoin, you’ve seen that people have become millionaires through investing in it. Your question is: “Can I still do the same, or has the bitcoin boat sailed?” Unfortunately there’s no simple answer to this. Can you still make millions from bitcoin? Possibly. Has the bitcoin boat sailed? Certainly not. Bitcoin,
and digital currency as a concept, is still very young. Created just five years ago, it’s still trying to find its feet and its price is suffering rather wild volatility. On top of this, recent company failures have left a lot of bitcoiners out of pocket. That said, there are plenty of people who have made a lot of money from
bitcoin, having invested in the early days and watched the price rocket since then. Those who invested two years ago, when the price was $5 a pop, have seen their investment increase a sickening 9,560% to $483 per bitcoin (at the time of writing). In order to enjoy the same percentage return over the next two years, the price of bitcoin would
have to increase from $483 to around $46,500. Sounds ridiculous, right? Actually, some people don’t think it’s that far fetched at all.

Bullish bitcoiners

A number of extremely bullish bitcoin price predictions have been voiced over the past year by some pretty notable commentators.
Ex-Facebook executive Chamath Palihapitiya kicked things off in May last year, writing in a piece for Bloomberg stating that each bitcoin could go on to be worth more than $400,000, provided it establishes itself as a “useful reserve currency”.
The Winklevoss twins (of the Facebook lawsuit fame) said in November that they believe the price could go on to increase 100-fold, with the market cap reaching $400bn (the market cap is currently $5.8bn).
A few weeks later, a report from Wall Street analysts Gil Luria and Aaron Turner predicted that the price of one bitcoin could increase to almost $100,000.

Titled ‘Bitcoin: Intrinsic Value as Conduit for Disruptive Payment Network Technology’, the report predicted the price of bitcoin could increase to 10-100 times its value at the time, which was around $1,000.

Political and financial pundit Max Keiser has been championing bitcoin for years, but in December he suggested it wouldn’t be long before the price hit $5,000.

CoinDesk polled its readers in January and found 56% of the respondents believed the price of bitcoin will reach a whopping $10,000 this year. Of the ‘young people’ quizzed for a separate survey by Wired, 42% said they believe bitcoin is a lasting currency and 30% consider investing in or mining bitcoins as safer than the more traditional stock market.

While it seems there are plenty of people flying the flag for bitcoin, it’s worth noting there is an endless supply of pessimists who think digital currency will crash and burn in the not-so-distant future.

Bearish naysayers

Warren Buffett recently nailed his colours to the mast, telling CNBC in no uncertain terms that he thinks bitcoin is an utter waste of time. “Stay away from it. It’s a mirage, basically,” the billionaire investor said, adding that “the idea that it has some huge intrinsic value is just a joke”.

American economist Paul Krugman voiced similar views in an opinion piece he wrote for the New York Times back in December called ‘Bitcoin is Evil’.
He said he was “deeply unconvinced” that bitcoin could actually work as a form of currency and he doesn’t think it works as a “store of value”. Sir Bob Geldof followed suit shortly after, damning bitcoin by saying digital currency “simply won’t work”. However, Max Keiser told the world not to pay any attention to the singer’s protestations, claiming that asking his opinion on bitcoin is a “worthless exercise”, akin to “asking a blind man his opinion on a Turner”. American economist Nouriel Roubini, who anticipated the collapse of the US housing market and the worldwide recession that started in 2008, is also not bitcoin believer. He has taken to his Twitter feed to label it an “irrational useless bubble fad”, a “Ponzi game” and a “lousy store of value”.

How to get involved 

If the above ranting hasn’t put you off getting involved in bitcoin, it’s likely you’re now wondering how best to start.
You’ve probably heard that bitcoins are generated through a process called mining, which involves the use of computer hardware to solve complicated mathematical equations. In the past, people could use their own PCs to mine bitcoins, but things have now evolved so that to make any significant return, you have to first invest in application-specific hardware that can cost thousands of dollars.
Most people are choosing, instead, to get involved in bitcoin simply by buying some of the digital currency via online exchanges, such as Bitstamp, BTC-e and BTC China, or marketplaces such as LocalBitcoins.com.

Digital currency isn’t going to go away any time soon. So, when are you going to take the plunge?

Once you’re in possession of some bitcoins, you then have to make a decision about what to do with them – do you stash them away and hope for the
best, do you spend them or do you do a bit of both? That’s completely up to you, but bitcoin’s value will only increase if its popularity increases, and for this to happen people need to use it, to spend it and to take advantage of the benefits it provides. By all means, store some in a bitcoin wallet, but don’t just leave all of them in there, gathering virtual dust. Create another wallet that you use for spending. Make some purchases, test it out, explore how easy it is. Tell your friends about it and give your investment the best possible chance of blossoming into the millions you’re praying for.

It’s important that you treat bitcoin like you would any high-risk investment – there’s a chance you could end up making a lot of money, but there’s also the chance you could lose everything. So, just be sensible and don’t invest more than you can afford to lose.
For now, the bottom line is that digital currency isn’t going to go away any time soon. So, when are you going to take the plunge?

Open your free digital wallet here to store your cryptocurrencies in a safe place.

Satoshi

MasterCard lobbyist adds Bitcoin to list of topics

(Bloomberg) When MasterCard Inc. paid a team of
lobbyists about $70,000 earlier this year to promote the bank-card network’s views, a new topic made their list: bitcoin.

Washington-based Peck Madigan Jones had five of its
lobbyists, including Jeff Peck, who leads the firm’s financial
services and capital markets practice, work on subjects
including “bitcoin and mobile payments” in the House of
Representatives and Senate during the first quarter, according
to a regulatory filing. Other topics the firm handled for
MasterCard included data breaches, interchange fees and gift
cards.

As big financial companies dismiss bitcoin’s prospects, the
document shows MasterCard is at least talking with lawmakers
about the virtual currency, which entrepreneurs pitch as a cheap
alternative to established payment systems. Investors in bitcoin
businesses are working to head off burdensome regulation and
capture some of the combined $61.3 billion in annual revenue
generated by the four largest U.S. credit-card networks.

“We were gathering information in connection with recent
congressional hearings to better understand the policy issues
around virtual and anonymous currencies,” said Jim Issokson, a
spokesman for Purchase, New York-based MasterCard.

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Satoshi

Bitcoin Regulation Update – 03/07/14

(BitcoinMagazine) This
week saw the outing (or not) of Satoshi Nakamoto, Bitcoin’s alleged
inventor, who is said to have abruptly disappeared from the online
forums he was known to frequent in Bitcoin’s early days. Though the man
alleged to be Nakamoto, who was living under a different name in the
United States, denied involvement with Bitcoin, Newsweek, the
publication that broke the story, stands behind their work. The early
response from the online Bitcoin community could best be described as a
low grade form of moral outrage, combined with a dash of horror. What
seems to have upset Bitcoiners most is the fact that a media outlet was
able to identify and publicly name a person who clearly was not
interested in being identified, using little more than public
information and basic detective work. To the extent that the majority of
crypto enthusiasts value privacy, if not anonymity, the Satoshi
Nakamoto affair does not bode well.
Canada-based Bitcoin exchange Vault of Satoshi announced via Facebook on Thursday that it would discontinue
support for US customers due to an “increasingly hostile” regulatory
environment. The exchange, which connects users with others looking to
trade crypto currencies for fiat currencies, claimed to be facing
considerable difficulties complying with FinCEN’s anti-money laundering
rules, not the least of which was FinCEN’s policy disallowing the filing
of paper reports by money service businesses and the seeming
incompatibility of the online reporting system with foreign businesses.
The decision to abandon the US market entirely seems to be a fairly
drastic response to US law, which could rightly be described as overly
complicated. Vault of Satoshi is neither the first nor the only non-US
based company to face US regulatory requirements, so it isn’t clear why
it seems to be having unusual difficulty in this area.  The company’s
Bitcoin to US dollar volume on Friday stood at 280 coins as of 5:00 PM
CST, compared to 314 for Bitcoin to Canadian dollars. Under the new
policy, US traders will be unable to deposit or withdraw cash from the
exchange, but will be permitted to trade coins.
Yet another exchange, this time Canadian company Flexcoin, informed customers this week that it is insolvent
as the result of a hack induced theft and would have no choice but to
cease operations. The exchange lost an estimated $500,000 worth of coins
in its hot wallet, but a spokesman said that customer coins in cold
storage would be returned to their owners.  Flexcoin referred to its
terms of service, reminding its customers that they agreed not to hold
Flexcoin liable for theft, while informing everyone else that they were
out of luck. The operative verbiage states that “Flexcoin is not
responsible for insuring any bitcoins stored in the Flexcoin system.”
Whether this will be sufficient to ward off civil liability remains to
be seen.
Her Majesty’s Revenue and Customs service in the United Kingdom has reportedly dropped
a plan to apply value added taxes to mined bitcoins and Bitcoin
exchange transactions. However, the treasury maintained in a brief
delivered to British lawmakers that the 20% VAT still applies to goods
and services purchased with bitcoins, just the same as it would if those
same goods and services were purchased with Pounds. After a careful
review, HM Treasury was more likely to have discovered the near
impossibility of taxing Bitcoin at the point of exchange or the point of
creation, than to have determined that it falls outside the scope of
transactions subject to the tax.  Merchants, on the other hand, are
already accustomed to collecting VAT and equipped with the
infrastructure both to report it and to comply with the audit
requirements of the British government. The UK has developed a
reputation in the Bitcoin community of late for being comparatively
friendly to crypto currency from a regulatory standpoint and more
accessible than US regulators.
Vietnam’s Communist government has officially banned
all Bitcoin transactions. The Vietnamese central bank announced the
policy, citing Bitcoin’s alleged role in promoting money laundering and
other criminal activity. The bank did not specify how the ban would be
enforced or what the penalties for non-compliance would be. The
Vietnamese government maintains restrictive capital controls (ostensibly
to protect the Dong against speculators), that Bitcoin could be used to
subvert. Few exchanges offer the ability to convert from Bitcoin to the
Vietnamese Dong.  However, other currencies, such as the US dollar, are
in common use on Vietnam’s streets, especially in urban centers.
Japan has announced
that it will not attempt to regulate Bitcoin transactions carried out
within its borders on the grounds that bitcoins are not considered a
currency. However, Japanese banks will be prohibited from buying or
selling bitcoins. The Japanese government also clarified that it intends
to treat Bitcoin as a commodity and subject it to the applicable
taxation regime. Japan is the home of Mt. Gox, the collapsed Bitcoin
exchange which is currently the subject of a bankruptcy filing in that
country, along with at least one criminal probe and numerous civil
suits.

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Satoshi
Australianflagatnewport

Australian writers awarded 12 BTC in Bitcoin Essay Competition

(CoinDesk) The winners of Australia’s first bitcoin essay competition were announced this week, with 12 BTC in prizes awarded to three writers.
The writing contest, sponsored by Sydney-based exchange Bit Trade Australia, posed the question: ‘Digital Currencies and the future: Will Bitcoin change the world?’.
The
competition opened in November last year to Australian and New Zealand
citizens with the intention to drive bitcoin and digital currency
awareness.
The prize has increased in value considerably since
the contest was announced. The 7 BTC first prize was worth around
AU$1,000 when announced, but is now worth over AU$4,000, despite this
week’s price turmoil.

First prize went to Gareth Williams, a New Zealand native who lives in Sydney and works full time as a Java programmer.

“I
feel that Bitcoin, just like the Internet in the early 1990s, is a
technology with enormous potential which is largely under-appreciated in
the mainstream,”
he said.

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Satoshi
bitcoin bars nyc

Lawsky says New York will adapt money transfer rules for Bitcoin

 

(Bloomberg) New York state will adapt existing rules on money transmission to license digital currency firms, financial services Superintendent Benjamin Lawsky said in remarks prepared for a conference in Washington today.

We do not have to throw out all of our existing rules for money transmitters or banks, which have generally served consumers well when vigorously enforced,” Lawsky said in a statement delivered to a New America Foundation forum on Bitcoin. “Indeed, certain aspects of virtual currency could dovetail with existing regulations.

New York will “likely have to proceed with issuing some form of specially tailored BitLicense that adapts those rules to the world of virtual currency,” Lawsky said.

The Treasury Department’s Financial Crimes Enforcement Network said in March that virtual currency businesses may be regulated as money transmitters. Since states license such companies, the decision set off a scramble by states to decide how to treat the embryonic industry.

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Satoshi

Reserve Bank of India closely examining digital currencies

(The Hindu) A number of countries around the world are taking a close look at the use of bitcoin and other digital currencies, and India is no exception. It is being reported that the country’s government on Tuesday said that the Reserve Bank of India (commonly known as RBI) is taking a close look at both the legal and security elements of digital currencies.

“The RBI is presently examining the issues associated with the usage, holding and trading of virtual currencies, including bitcoins, under the extant legal and regulatory framework of the country, including foreign exchange and payment systems laws and regulations,” said P. Chidambaram, Finance Minister.

seal reserve bank indiaThis isn’t the RBI’s first run-in with digital currencies, though. Late last year (Christmas Eve, in fact), it was reported that the RBI issued a public advisory on bitcoin, warning citizens if its potential pitfalls. “No regulatory approvals, registration or authorization has been obtained by entities concerned for carrying on such activities. As such, they may pose several risks to their users,” said Chidambaram.

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Satoshi
coinmap 2014

Over 3,000 Bitcoin-friendly merchants are already registered at CoinMap

(BitcoinExaminer) Bitcoin’s amazing ride into the mainstream is not just happening online with the help of big retailers like Overstock or TigerDirect. There are now more than 3,000 brick-and-mortar merchants spread across the world that accept cryptocurrency, according to CoinMap.
The online map allows retailers to register once they start accepting BTC and the number of members has been growing exponentially. After the price peak registered in November of 2013, CoinMap went from almost 1,000 to 2,004 merchants.
coinmap 2014 bitcoin

 

And now the platform took another big leap, currently listing 3,003 physical retailers. This means that the number of businesses registered at CoinMap grew about 50 percent in less than two months.
The place with the biggest number of retailers is still the United States – with 1,294 businesses -, but Europe is giving America a run for its money with more than 1,200 companies and stores that already accept Bitcoin.
Cryptocurrency is even present in more secluded places like Iceland or Siberia, as you can see on the website.
According to the calculations made by the Redditor ‘LiveBeef’CoinMap’s next big jump should happen in March, when the platform could reach 4,000 merchants.

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Satoshi