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What is Bitcoin?

Bitcoin is a digital crypto-currency with no single point of failure due to its decentralized peer-to-peer architecture. The source code is publicly available and changes to the reference Bitcoin client are made via concensus within the community. Advantages of Bitcoin include irreversible transactions (i.e. no possibility of chargebacks as with credit cards), pseudo-anonymous, limited and fixed inflation, near instant transactions, multi-platform, no double-spend and little to no barriers to entry and more. It was created by an anonymous person known as Satoshi Nakamoto. Find out more at WeUseCoins.com.

Bitcoin Latest News

Bitcoin: Getting Dangerous Up Here - Seeking Alpha


Bitcoin: Getting Dangerous Up Here
Seeking Alpha
GBTC has now surged to an 80% premium to its NAV. Be very cautious if you own it here. Most folks think Bitcoin is a short; that sentiment could cause it to spike further. That said, often the best trade is no trade at all. This is a good time to be on ...

Posted on 25 May 2017 | 5:06 am

Bitcoin blows past $2500, $2600, and $2700 - Business Insider


Business Insider

Bitcoin blows past $2500, $2600, and $2700
Business Insider
The bitcoin rally just keeps going. Thursday's action has run bitcoin above $2,500, $2,600, and $2,700 for the first time. Currently, the cryptocurrency trades up 11.2%, or $270, at $2,682 a coin. It has gained in 27 of the past 30 sessions and has ...

and more »

Posted on 25 May 2017 | 4:47 am

Blockchain Could Move Self-Driving Cars Into the Fast Lane

With autonomous cars on the horizon, blockchain startups are eagerly building IoT systems for the fledgling industry

Source

Posted on 25 May 2017 | 4:30 am

Bitcoin Price $4500 In South Korea As Uptake Race Continues - CoinTelegraph


CoinTelegraph

Bitcoin Price $4500 In South Korea As Uptake Race Continues
CoinTelegraph
South Korean Bitcoin traders are facing asking prices of $4,500 as the virtual currency's price continues to surge. Order books from domestic exchange Coinone list a current price of 4,254,000 won ($3805), with a 24-hour high of 5,025,000 ($4494).
Bitcoin Tops $2600, Double the Price of GoldFinance Magnates
Bitcoin Price Hits $3800 in South Korea: Factors of Arbitrage & Rising DemandCryptoCoinsNews

all 6 news articles »

Posted on 25 May 2017 | 3:12 am

Consensus 2017: Advice From a Lawyer to ICOs: 'Don’t Be Stupid'

The legality of the ICO as a funding vehicle was discussed on day three of CoinDesk's annual Consensus event.

Source

Posted on 25 May 2017 | 3:00 am

John McAfee Says Bitcoin Boom to Put MGT Capital in the Black - Bloomberg


John McAfee Says Bitcoin Boom to Put MGT Capital in the Black
Bloomberg
Bitcoin and other digital currencies like ethereum have surged as more companies embrace the underlying technology and some investors seek financial refuge from political uncertainty across the globe. MGT Capital primarily mines bitcoin, but also has ...

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Posted on 24 May 2017 | 8:42 pm

Hyperledger Moves Blockchain Frameworks Sawtooth and Iroha Forward, Adds Members

Hyperledger Moves Blockchain Frameworks Sawtooth and Iroha to Active Status

Hyperledger, the open-source, cross-industry collaborative effort focusing on blockchain technology, has advanced the status of its Sawtooth and Iroha blockchain frameworks from “Incubation” to “Active” status.

The green light was given by Hyperledger’s 12-member Technical Steering Committee (TSC), chaired by Christopher Ferris, CTO of Open Technology at IBM. It followed an extensive review period during which each project was evaluated based on exit criteria that include legal compliance, community support, test coverage and continuous integration support, documentation, code reviews and more.

Ray George, senior director of PR at the Linux Foundation, told Bitcoin Magazine that “there is no difference [between Incubation and Active status] when it comes to how the projects are expected to run and how the TSC works with them to ensure a healthy community continues to be built.

“The most tangible difference is how this is presented to the public — not as projects whose communities are still finding their bearings, but as communities ready for new contributors and whose users can depend upon those communities persisting for the long term.”

Hyperledger Iroha, which was initially proposed by Soramitsu, Hitachi, NTT DATA and Colu, is a business blockchain framework inspired by Hyperledger Fabric. It was designed to be simple and easy to incorporate into infrastructural projects requiring distributed ledger technology, and aims to provide a development environment where C++, web and mobile application developers can contribute to the Hyperledger Project.

Hyperledger Sawtooth was initially contributed by Intel and designed to explore scalability, security and privacy questions prompted by the original distributed ledgers.

The modular platform allows organizations to build, deploy and run complex distributed ledgers, and includes a novel consensus algorithm, Proof of Elapsed Time (PoET), which targets large distributed validator populations with minimal resource consumption.

Sawtooth and Iroha follow Hyperledger Fabric, the first project to graduate in March 2017. These projects, alongside five others, all fall under the Hyperledger organization umbrella, which focuses on bringing together software developer communities to develop open-source blockchain and smart contract related technologies.

Projects currently in Incubation include Hyperledger Cello, a blockchain module toolkit; Hyperledger Composer, a set of collaboration tools for building blockchain business networks; and Hyperledger Explorer, a blockchain explorer for viewing, invoking, deploying or querying blocks, transactions and associated data.

Hyperledger’s Membership Expands

The news of Sawtooth and Iroha moving out of Incubation broke on Monday at Consensus 2017, a major blockchain-focused event taking place this week in New York, during which Hyperledger also announced the addition of eight new members, bringing its total membership to 142.

New members joining the Hyperledger Project include Deloitte, Ernst & Young, Schroder Investment Management, AlphaPoint and Change Healthcare, one of America’s largest healthcare IT companies and the first healthcare organization to join at the top membership level.

Change Healthcare’s CTO, Aaron Symanski, will be joining the Hyperledger Governing Board, chaired by Blythe Masters, CEO of Digital Asset, and consisting of representatives from 20 members of the Hyperledger membership.

“Blockchain [technology] is a promising and exciting new technology for secure online transactions,” said Symanski. “But it is crucial that healthcare leaders step up to champion innovation to help take blockchain [technology] from its early implementations to tomorrow’s healthcare IT solutions.”

In October 2016, Hyperledger kicked off a Healthcare Working Group to advance blockchain development in the healthcare industry. The group now has more than 425 technologists and executives representing the likes of Accenture, Gem, Hashed Health and IBM.

Another company that has joined the Hyperledger Project is FZG360 Network Co. Ltd., a leading real-estate portal and trading platform in China, which aims to “enhance the application of [blockchain technology] to a higher maturity level,” particularly in the area of real estate.

Hyperledger was founded in December 2015 by the Linux Foundation and counts among its members leading firms representing various industries including blockchain technology, finance, healthcare, the Internet of Things, aeronautics and real estate, among several others.

The post Hyperledger Moves Blockchain Frameworks Sawtooth and Iroha Forward, Adds Members appeared first on Bitcoin Magazine.

Posted on 24 May 2017 | 7:03 pm

Qtum’s Block Size Limit Will Be Governed by Smart Contracts: Here’s How

Qtum’s Block Size Limit Will Be Governed by Smart Contracts: Here’s How

Qtum is an up-and-coming smart contract platform set to launch in September of this year. Sometimes ambitiously referring to itself as “China’s Ethereum,” the project recently raised $15 million in three days through a successful crowdsale or “Initial Coin Offering” (ICO).

On a technical level, the Qtum blockchain will resemble Bitcoin, but will integrate an Ethereum-like Virtual Machine on top for smart contracting purposes. Additionally, Qtum is in the process of implementing a “Decentralized Governance Protocol” (DGP). This DGP will have smart contracts determine the blockchain’s parameter selection, like its block size limit.

Jordan Earls, also known as “earlz” online, is the co-founder and lead developer of Qtum.

“We believe this will allow for Qtum to be the first self-modifiable, self-regulating and ultimately self-aware blockchain,” he told Bitcoin Magazine.

 The Concept

Any blockchain has a number of parameters. In Bitcoin, this of course includes the 1 megabyte block size limit. But it also includes the block reward (currently 12.5), the block interval time (ten minutes) and more. These and three other parameters apply to Qtum as well.

But there are two basic problems with needing to have these parameters. First, they are very hard to get “right,” in so far as that’s even possible, since different parameters benefit different use cases. And second, in a decentralized system, these parameters can be very hard to change.

“The core rationale and problem we had when designing this is that we will release Qtum with some initial parameters that we try to make perfect,” Earls told Bitcoin Magazine. “But we don't know what the ecosystem will look like one month after release, much less one year. So, we designed DGP. That way, we can tune the blockchain to be as usable and secure as possible without needing to fork, just to change a simple number from 1 to 2.”

Qtum plans to realize this way of “tuning the blockchain” by doing what it does best: The DGP will consist of relatively straightforward smart contracts made up of blockchain-readable pieces of executable code.

“We have open-source smart contracts which implement the rules for changing the parameters, which will then be accepted by all nodes. It implements a fairly simple governance system of ‘user keys’ and ‘admin keys.’ There is a modifiable parameter in the contract which determines how many keys of each type must vote in order to approve a change to, say, the block size limit.”

Importantly, through the use of smart contracts, these keys can actually represent more than just a regular user per key: Each key can represent a defined group.

“Perhaps one key represents a majority of hash power; or a key represents coin votes by coin holders; or a key acts according to a dynamic limit based on how full blocks are. Or even oracles: a key can effectively be controlled by people or servers that act based on input not directly readable by the blockchain itself, like USD market price for transaction fees. It’s extremely flexible.”

Qtum will almost certainly include smart contracts for the block size limit, the gas schedule to determine the price of different smart contract operations (for which Ethereum hard forked several times) and the minimum gas price. Additionally, it might deploy smart contracts for block interval times, block rewards, maximum gas per block and maximum script size or signature operations per transaction or block.

Changing the Rules

Embedding the parameter selection in smart contracts is clever and having all node software adjust accordingly even more so. However, an arguably even harder problem is not so much what parameter is decided on, but who gets to decide in the first place and how.

In Qtum, the initial parameters will be set by the developers based on their testing and measurements.

“For instance, we've already determined that a block size of 2 megabytes should be reasonable,” Earls said.

After that, the initial set of rules to define the parameters can be changed themselves within the rules of the system, too.

A smart contract could, for example, start out relatively simple: It requires a majority of core developers to change the rules of the contract. Then, if a majority of core developers decides that instead of just developers, it should also include a majority of coin holders, the contract can be changed to a two-of-two multisig contract. From that moment on, one key would represent the developers, while the other key would represent the majority of coin holders. Next, if both developers and coin holders agree, hash power can have a seat at the table, too, and so forth.

As such, Qtum smart contracts can change not only the parameters of the system, but also how the parameters themselves can be changed.

That said, as Earls acknowledged, the Decentralized Governance Protocol can’t actually solve all governance problems. It’s specifically designed to make certain predefined parameters more easily adjustable, and it can indeed even change how these parameters can be adjusted to some extent.

But the Decentralized Governance Protocol does not and cannot apply to network rules that aren’t among these predefined parameters. Protocol changes outside of these specific parameters would still require a typical upgrade mechanism, like a hard fork or a soft fork.

“I believe if Bitcoin had DGP technology, then we would still see all this fighting about SegWit vs Bitcoin Unlimited, etcetera,” Earls acknowledged. “But, DGP would have been used in the meantime to increase the block size to something conservative but reasonable like 2 megabytes or 4 megabytes, to avoid all the transaction speed problems. Meanwhile, the developers and community could figure out a more permanent solution.”

The post Qtum’s Block Size Limit Will Be Governed by Smart Contracts: Here’s How appeared first on Bitcoin Magazine.

Posted on 24 May 2017 | 6:38 pm

DCG’s Bitcoin Scaling Proposal and What it Needs to Succeed

DCG’s Scaling Proposal and What it Needs to Succeed

Spearheaded by Barry Silbert’s Digital Currency Group (DCG), over 50 companies signed and published on Medium a “Bitcoin Scaling Agreement” this week. The agreement intends to put an end to Bitcoin’s long-lasting scaling debate. But whether it actually will is a different question.

Here’s what the agreement entails, how it compares to existing scaling proposals and what it requires to succeed …

What the Agreement Entails

The DCG agreement is based on the “SegWit2MB” proposal, originally floated by RSK Founder and Chief Scientist Sergio Demian Lerner. This proposal couples activation of Segregated Witness (SegWit), the centrepiece of Bitcoin Core’s scaling roadmap, with an added block-size-increase hard fork down the road. While SegWit itself offers an increase to two to four megabytes, the added hard fork should double this to a maximum of eight megabytes.

According to the Medium post, the soft fork will be activated “at an 80% threshold,” (presumably) referring to hash power. And the hard fork will be activated “within six months.”

However, it seems that different signatories have different interpretations of what this actually means. Some claim that SegWit will be activated as a soft fork first, followed by a separate block-size-increase hard fork later. Others suggest that the soft fork will come first, but in such a way that it would trigger hard fork code, which still activates later. Yet others suggest that both the soft fork and the hard fork will be activated at the same time. And some even think the hard fork will come first, followed by SegWit activation later.

While these kinds of details may still need to be worked out, over 50 companies signed the agreement. Combined, they currently represent more than 80 percent of hash power on the network and, according to these companies, $5.1 billion USD in transaction volume as well as 20.5 million Bitcoin wallets.

But there are telling omissions, too. Perhaps most notably, no Bitcoin Core developer is party to the agreement, nor were any of them even present at the meeting. Similarly, none of the entities that fund Bitcoin Core developers — like Chaincode Labs, Blockstream or MIT’s Digital Currency Initiative — signed on. And of course, some 50 companies are only a segment of the Bitcoin industry in the first place; several big players are still missing.

Last but not least, Bitcoin’s broader user base is not involved with the agreement either, nor is the agreement in any way tied to community support.

How the Agreement Compares to Existing Scaling Solutions

Like the DCG agreement, Bitcoin Core’s scaling roadmap includes Segregated Witness as well. It also suggests that a hard fork to further increase the block size limit could be needed in the future, though it does not specify a specific point in time. Most Bitcoin Core developers also believe that a hard fork requires at least a year to prepare, perhaps more. As such, both Bitcoin Core and the DCG agreement share activation of SegWit as a first step in their scaling plans — but not the hard fork part.

However, the SegWit activation mechanism that is part of the DCG agreement slightly differs from the current activation mechanism implemented in Bitcoin Core. Most important, the DCG agreement lowers the required hash power threshold from 95 to 80 percent. And because of how SegWit is designed, activation through the DCG agreement is incompatible with all SegWit-ready Bitcoin nodes on the network.

It may be possible to work around this issue, however. As proposed by Bitmain Warranty engineer James Hilliard, SegWit activation can be made compatible between the DCG agreement and Bitcoin Core, though it’s a bit “hacky.” In short, if miners signal support for SegWit along the DCG agreement with at least 80 percent of hash power, this 80 percent can also start to completely reject any block that does not signal support for SegWit. This activates the current SegWit proposal by Bitcoin Core, as that would reach its 95 percent threshold as well.

Down the road, the DCG agreement’s hard fork is very unlikely to be implemented in Bitcoin Core for a number of reasons, but most importantly because it is contentious.

Other scaling proposals, like Bitcoin Unlimited’s Emergent Consensus or Bcoin’s Extension Blocks, are not necessarily incompatible with the DCG agreement, or at least they don’t need to be.

What the Agreement Requires to Succeed

What the agreement requires to succeed depends on your concept of “success.” But it will be a challenge by any definition.

First off, it should be noted that the proposal — which allows for blocks of up to 8 megabytes — may not be safe. While the full extent of the block size issue is outside the scope of this article, suffice it to say that some think that 8 megabyte blocks are, in fact, a significant risk.

Perhaps even more important, code needs to be written, and it is not yet clear who will actually do this. Moreover, this code should really be reviewed and tested extensively: the plan is to have it carry billions of dollars’ worth of value. This will not be easy to do within six months; impossible, according to some.

Then, this code must be brought into production. For the hard fork in particular, this means that everyone effectively needs to switch to a new protocol. If all signatories of the agreement follow through, it would probably be sufficient to at least keep this protocol running.

It seems obvious that the signatories of the DCG agreement hope that the rest of the Bitcoin ecosystem will also switch to the new protocol once the fork takes place. In that case, the new protocol would (probably) be considered the “new Bitcoin” by everyone.

But given the contention of the proposed hard fork, this currently seems very unlikely.

While it’s impossible to predict the future, it seems almost certain that at least some segment of Bitcoin developers, miners, companies and — most important — users will reject the fork. They will stay put on the existing protocol even if that means it takes much longer for blocks to confirm, or they will roll out a user activated soft fork, or perhaps they will even deploy a counter–hard fork. Under any of these scenarios, the Bitcoin blockchain would “split” into two chains, or more.

The real challenge, therefore, is to get people to use the new chain. And, if that is desired, to get them to consider it the “real” Bitcoin. This will probably be a much harder challenge than forking itself, even for all the companies involved in the DCG agreement.

And most important, for the agreement to succeed in any way at all (perhaps even under a different name than “Bitcoin”), it will require the signatories to follow through. The Bitcoin protocol is difficult to change, and promises or Medium posts alone don’t have any impact on it whatsoever, as several similar commitments have proven in the past.

The post DCG’s Bitcoin Scaling Proposal and What it Needs to Succeed appeared first on Bitcoin Magazine.

Posted on 24 May 2017 | 6:21 pm

Bitcoin bonanza, Dollar Tree: Here's what could drive markets ... - CNBC


CNBC

Bitcoin bonanza, Dollar Tree: Here's what could drive markets ...
CNBC
Here are the three market themes that macro strategist Boris Schlossberg of BK Asset Management will be watching.
Bitcoin is Mandatory For Portfolio Protection: CNBC - CoinTelegraphCoinTelegraph

all 3 news articles »

Posted on 24 May 2017 | 3:37 pm

Bitcoin, Ether Set New All-Time Highs Amid Market Boom

Money continues to flood into cryptographic assets, with bitcoin, ether and zcash setting new highs today amid a broader market boom.

Source

Posted on 24 May 2017 | 2:25 pm

Consensus 2017: Blockchain Consortia in A Rapidly Changing Market

"Whatever we build today will probably have to be changed again." So said Eiki Hatakeyama of the Western Asset Management Company, highlighting a sense of realism that came through in a series of workshops sponsored by distributed ledger consortium R3 during CoinDesk's Consensus 2017 conference. Discussions revolved around the rapidly changing marketplace – and the difficulty of keeping up, even within […]

Source

Posted on 24 May 2017 | 12:00 pm

Opinion: Three reasons to fear the coming crash in bitcoins - MarketWatch


MarketWatch

Opinion: Three reasons to fear the coming crash in bitcoins
MarketWatch
Bitcoins themselves may be very new, yet that kind of price action is very old. In truth, it is starting to look like a bubble, and that should be making investors everywhere feel nervous. Why? Because it tells us that financial crazes are back ...

Posted on 24 May 2017 | 10:35 am

Consensus 2017: Bitcoin Exchange Execs See Promise in Multi-Token Future

Exchange operators take the stage at Consensus 2017 to talk tokens, ICOs and building an exchange from scratch.

Source

Posted on 24 May 2017 | 10:00 am

$100 of bitcoin in 2010 is worth $75 million today - Chicago Tribune


Chicago Tribune

$100 of bitcoin in 2010 is worth $75 million today
Chicago Tribune
Bitcoin has received a lot of attention over the past few weeks in the wake of the recent malware attacks that impacted dozens of countries and thousands of businesses. Victims were required to pay a "ransom" in the digital currency to unlock files ...
If You Bought Rs 4500 Worth of Bitcoin 7 Years Ago, You Would Be Worth Rs 490 Crores TodayMensXP.com
The Case Against Bitcoin & Crypto-Currency - Barron'sBarron's

all 7 news articles »

Posted on 24 May 2017 | 9:16 am

Wyre’s WeChat and Facebook Bot Authenticates Invoices on Ethereum

Blockchain startup Wyre has revealed a new bot for Facebook Messenger and WeChat that authenticates invoices on a public blockchain.

Source

Posted on 24 May 2017 | 6:00 am

Consensus 2017 Day 2 Recap: Finding Blockchain's Common Ground

CoinDesk's Noelle Acheson recaps the second day of Consensus 2017, CoinDesk's New York blockchain conference.

Source

Posted on 24 May 2017 | 5:01 am

Consensus 2017: The Ups and Downs of Digital Currencies

Two panels at Consensus 2017 conference focused on both the promise and pitfalls of digital currencies and blockchain assets.

Source

Posted on 24 May 2017 | 4:00 am

Consensus 2017: Blockchain and Healthcare's People Problem

Blockchain is viewed as a way to give patients greater control over their data – but getting there might not be as easy as it sounds.

Source

Posted on 24 May 2017 | 3:00 am

Consensus 2017: Decentralized Exchange 0x Wins Proof-of-Work Startup Competition

0x took the top prize today in the second annual Proof of Work pitch competition at CoinDesk’s Consensus 2017 conference in New York.

Source

Posted on 23 May 2017 | 4:08 pm

These Two UASFs Could Activate SegWit

BIP 148 and BIP 149: the Two UASFs to Activate SegWit

Segregated Witness (SegWit), the Bitcoin protocol upgrade proposed by the Bitcoin Core development team, was originally designed to activate via the Bitcoin Improvement Protocol 9 (BIP 9) standard, a hash-power signalling mechanism. This would allow the Bitcoin ecosystem to coordinate the upgrade relatively safely through miner readiness.

But with the SegWit proposal in particular, BIP 9 no longer serves just to signal readiness. Miners as well as users increasingly see BIP 9 as a sort of miner vote on the desirability of the protocol upgrade. And some miners even seem to utilize it as a negotiation chip for protocol development.

The pseudonymous developer who goes by the name “Shaolinfry” considers this an abuse of the coordination mechanism. He therefore recently proposed an alternative activation scheme: a user-activated soft fork, better known as a “UASF.”

Shaolinfry also drafted two specific UASF proposals: BIP 148 and BIP 149. Both of these are currently “in the running” for user adoption. And speaking with Bitcoin Magazine, Shaolinfry, at least, seems sure that one of them will be accepted by the network.

“There is no universe in which SegWit will not get activated.”

SegWit and the UASF

A soft fork is a change to the Bitcoin protocol that introduces new rules or tightens existing ones. This makes soft forks backward compatible: nodes that did not upgrade should remain part of the same Bitcoin network.

Segregated Witness is a soft fork that would increase Bitcoin’s block size limit and solve some longstanding protocol issues. While it’s always hard to say with conclusive certainty, the proposal seems to have broad support within the Bitcoin ecosystem. Many wallets, exchanges and other companies in the space have indicated they are ready for it, while an overwhelming share of reachable nodes on the network have implemented the solution, too.

As per BIP 9, the current implementation of SegWit activates if about 95 percent of hash power signals support within a two-week difficulty period before November. However, hash power support has so far stagnated at around 30 percent.

This apparent mismatch between the ecosystem and hash power support is why some — like BIP 9 co-author Rusty Russell — are increasingly thinking the activation method was a mistake.

And Shaolinfry does, too.

“The main issue with BIP 9 is that it has a veto of only about 5 percent of hash power,” Shaolinfry explained. “That veto could be intentionally or unintentionally triggered. Intentionally, like how miners are currently blocking SegWit activation. Or unintentionally due to upgrade apathy.

“Miner activation also draws attention to mining pool operators politically. The whole world is paying attention to who is and isn’t signaling. That is undesirable. And what if the soft fork is for something that could make governments angry? We know this is the case in China for anonymity features, and increasingly in the United States as well.”

As such, Shaolinfry proposed activating SegWit through a UASF.

The idea behind any UASF, in short, is that users simply activate the soft fork at an agreed-upon point in time. If these users represent a majority of the Bitcoin economy — exchanges, merchants, users — miners are financially incentivized to follow the new soft fork rules. If they don’t, they could mine invalid blocks (according to the majority of the Bitcoin economy), and the “bitcoins” they earn would be worth less — or worth nothing at all.

Once a majority of hash power does follow these financial incentives and enforces the new rules, the rest of the Bitcoin ecosystem should automatically follow, just like with any other soft fork.

BIP 148

The first UASF proposal drafted by Shaolinfry is BIP 148.

BIP 148 is an interesting take on a UASF because it is actually designed to trigger the existing BIP 9 SegWit-activation threshold.

“If you want to redeploy SegWit, you must wait for the current deployment to expire by November of this year because many Bitcoin nodes won’t accept it otherwise,” Shaolinfry explained. “BIP 148 is a way to make the current BIP 141 deployment activate before November. That’s faster, and has the advantage that more than 70 percent of nodes has already upgraded.”

Specifically, starting on August 1, BIP 148 nodes will reject any Bitcoin blocks that do not signal support for Segregated Witness via BIP 9. So, if the majority of the Bitcoin economy enforces BIP 148, miners will have to signal support for SegWit in order not to have their blocks rejected.

Once these miners do signal support for SegWit, this signaling would also trigger all the “normal” SegWit nodes on the network. All these nodes would then enforce SegWit, even if they didn’t participate in the BIP 148 activation themselves.

And, from a game theory perspective, it may even be viable for a relatively small minority of the Bitcoin economy to get BIP 148 activated. Miners should have little to lose by signaling support for SegWit, but something to lose from not signaling: a smaller total number of users to sell their bitcoins to. As such, even a modest but committed BIP 148 user base could potentially be enough.

Finally, echoing his Medium post on Litecoin’s SegWit activation, Shaolinfry noted that even the possibility of such a UASF could be enough to make miners signal support — without even needing nodes to actually enforce it.

BIP 148: Risks and Incentives

There are, however, some risks. These are why some prominent Bitcoin Core developers — like Blockstream CTO Gregory Maxwell and Chaincode Labs Co-Founder Suhas Daftuar — consider BIP 148 too disruptive.

Per BIP 148, otherwise valid blocks would be rejected merely because they don’t include a signal. The rejection of these blocks would waste miners’ resources and detrimentally affect Bitcoin’s security.

Moreover, if only a minority of hash power enforces the new rules — either because they ignore financial incentives or because only a small minority of the economy enforces the new rules in the first place — the Bitcoin blockchain could split in two. There would be a “SegWit chain” and a “non-SegWit chain.” That would open up a new can of worms, where the risks for users on both ends of the chain are not the same.

“The incentives are clearly there for miners to follow the economy,” said Shaolinfry in response to this criticism. “But indeed, there is a chain split risk if less than 51 percent [of] miners comply and run BIP 148. However, even in this circumstance, the non-BIP 148 chain is asymmetrically disadvantaged, and will almost certainly be completely wiped out. The SegWit chain will always be more valuable, and once a majority of miners switches to that chain, the non-SegWit chain will disappear altogether.”

Furthermore, from a certain threshold on, the risk of a chain split become smaller as it gathers more support. This is why another prominent Bitcoin Core developer, Luke Dashjr, is throwing his weight behind the proposal.

And to avoid these kinds of risks, there could be another twist to BIP 148 as well, Shaolinfry pointed out:

“The interesting thing about BIP 148 is that any majority of miners can trigger it — it doesn’t have to be 95 percent. If 75 or even just 51 percent of hash power starts rejecting non-signaling blocks per August 1, they will always claim the longest chain. So really, all miners will from then on have to signal support and activate SegWit — or have all their blocks orphaned by the network.”

Finally, Shaolinfry may also release code — “Segsignal” — to allow miners to signal whether they will deploy BIP 148 and under what condition. Using this, miners could, for example, agree to activate SegWit through BIP 148 if, and only if, 51 percent indicates that they are willing to.

“This should remove any risk of a chain-split, even a short-lived one,” Shaolinfry said.

BIP 149 (and BIP 8)

Shaolinfry’s alternative UASF proposal is BIP 149.

BIP 149 utilizes an entirely new soft fork activation mechanism: BIP 8. BIP 8 resembles BIP 9 in that it initially allows miners to activate the soft fork through hash power. However, as opposed to BIP 9, the soft fork proposal doesn’t just time out by the end of the activation period. Instead, it sets an activation deadline. If that deadline is reached, nodes activate the soft fork regardless of hash power support.

There is a particular technical advantage of BIP 149 over BIP 148: it is less intrusive for miners. While BIP 148 effectively forces miners to signal, with BIP 149 miners don’t actually have to do all that much. They can support SegWit if they want to. If not, they may want to run a so-called “border node” to filter invalid transactions and blocks post-activation, but that’s about it.

Shaolinfry plans to implement BIP 149 in dedicated Bitcoin software if BIP 148 doesn’t succeed, and when the current BIP 9 SegWit proposal has expired by mid-November. The activation deadline for BIP 149 is then scheduled for early July 2018.  

Some developers, like Maxwell, are in no rush to activate SegWit and consider BIP 149 preferable. But others, like Dashjr, believe it will take too long.

Shaolinfry himself noted:

“BIP 149 is not too slow from a technical point of view. But, I do think the longer SegWit isn’t activated, the more gremlins and obstacles are going to besiege Bitcoin. So if the ecosystem rallies around BIP 148, that would bring this nightmare to a close.”


The post These Two UASFs Could Activate SegWit appeared first on Bitcoin Magazine.

Posted on 23 May 2017 | 3:20 pm

'A-Ha Moment': Toyota Talks Vision For How Blockchain Could Change Driving

Chris Ballinger, director of mobility services and chief financial officer for Toyota's R&D arm, talks the automaker's blockchain strategy.

Source

Posted on 23 May 2017 | 2:00 pm

Bitcoin & Ether Price Analysis: Bitcoin Still Going Strong While Ether Wearies

BTC ETH Price Analysis

Bitcoin and Ethereum continue to push all-time highs (ATHs) by most available metrics: price, market capitalization, daily traded volume, hash rate, transactions per day, etc.

mrkt cap.png

There appears to be a multifactorial convergence of fundamentals and technicals allowing for this surge to happen:

1. On-ramps

Specifically Coinbase for U.S. citizens, which now allows new users to purchase bitcoin (BTC), ether (ETH) or litecoin. Leading up to and even during the 2013 bubble, purchasing cryptocurrency was difficult for the average user. Know-Your-Customer (KYC) and Anti-Money Laundering (AML) checks cause a slight lag in on-ramping by limiting the total coins a new user can purchase. I expect the fuel for this rally to continue for at least another week.

2. Visibility in mainstream and popular media

At this point, you cannot use any social media or news source without hearing about Bitcoin. Everyone I’ve spoken with outside of the Bitcoinosphere is aware of its existence. Although purely anecdotal, this trend suggests Bitcoin is gaining visibility.  

3. ICOmania

Initial coin offerings (ICOs), similar to IPOs, allow for a company or brand to tokenize its assets through crowdfunding, most of which are done on the Ethereum blockchain. The quantity and rate of new ICOs remind many traders of the dot-com bubble due to large influxes of cash for almost every project.   

4. An agreement on the block size debate

The ongoing block size and scalability debate was stifling innovation surrounding Bitcoin. On Monday, it was announced that Barry Silbert and Bitcoin Unlimited proponents reached an agreement to activate SegWit now and hard fork in four months. Members of the Bitcoin Core community were not involved in the discussion. Shaolinfry, the user-activated soft fork (UASF) dev, had this to say regarding the agreement. UASF nodes continue to increase, despite the agreement.

To be clear, the proposal, as far as I can see, does not activate BIP 141, but is a completely new deployment that would be incompatible with the BIP 141 deployment. I’m not sure how that can be considered “immediate” activation. - Shaolinfry

uasf_nodes_all.png

5. Prices were already pushing ATHs  

Trend since 2015 has been bullish with several periods of extended consolidation. Price continues to break ATHs in large part due to further bullish technicals and market structure with every pullback/correction. Whether or not current price represents a bubble or euphoria is a bit irrelevant. What is more important is to look for signs of exhaustion. One such sign of exhaustion would be a toppy chart pattern such as an M double top or growing bearish divergence on a weekly chart.

Bitcoin

weekly.png

A bear div would consist of a higher high in price and a lower high on RSI, a measure of momentum. This would suggest lack of strength holding up price. In the case of BTC, however, there has been a steady increase in volume since the beginning of the year.

vol.png

As price continues to break ATHs almost daily, we can expect a large increase in volatility and range expansion, especially because there is no previous market structure at these levels. However, there are indicators that help determine support and resistance levels above ATH levels, the most common being Fibonacci extensions. Drawn from previous ATH to low, this would yield a target of ~$2,400.

daily.png

On a low timeframe, you can see yesterday’s $200+ volatility, which quickly rallied 50 percent of the drop.

15min.png

The current immediate target is the local top of $2,248.

Ethereum

Ethereum, on the other hand, is beginning to show signs of exhaustion. The weekly chart is showing a decline in volume since March, with ETH/USD pushing the top limit of RSI, and the ETH/BTC pair showing bear div.

ethusd.png

ethbtc.png

Structure currently has all the makings of an M double top. I would expect another retest of the previous consolidation level before moving higher. if Bitcoin makes a push past $2,400, however, it may drag up Ethereum with it as well.

ethusd 1h.png

The upside target should be between $198 and $217 according to Fibonacci extensions.

upside eth.png

Summary

  1. Bitcoin and Ethereum continue to push the envelope for almost every available metric and show little signs of slowing.

  2. Reliable on-ramping coupled with awareness and popularity continue to fuel demand.

  3. Despite several weeks of large gains, the possibility of continuing to further ATHs for Bitcoin remains high.

  4. With declining volume and a growing bear div on high timeframes, Ethereum is beginning to show signs of slowing.

The post Bitcoin & Ether Price Analysis: Bitcoin Still Going Strong While Ether Wearies appeared first on Bitcoin Magazine.

Posted on 23 May 2017 | 1:43 pm

Consensus 2017: CME Group, UK Royal Mint Detail Plans for Blockchain Gold

Derivatives giant CME Group and the UK's Royal Mint have revealed details about their plans to bridge the worlds of gold and blockchain.

Source

Posted on 23 May 2017 | 11:30 am

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Entrepreneur Vinny Lingham to Announce ICO at Consensus 2017

The CEO of blockchain identity platform Civic is expected to announce a forthcoming token sale today.

Source

Posted on 23 May 2017 | 9:15 am

Fidelity CEO Talks 'Love' For Bitcoin, Why Blockchain Will 'Change' Markets

At Consensus 2017, Abigail Johnson, chair and CEO of Fidelity Investments, went public with her enthusiasm for blockchain technology and its future.

Source

Posted on 23 May 2017 | 8:07 am

Bitt Reveals Big Plans for Cross-Caribbean Blockchain Settlement Network

A new partnership could be step one in a larger bid to unite some of the Caribbean's biggest financial institutions with blockchain tech.

Source

Posted on 23 May 2017 | 7:03 am

Blockstack Releases Blockchain-Powered, Tokenized Internet Browser

Blockchain startup Blockstack has released a decentralized browser aimed at making apps more easily accessible.

Source

Posted on 23 May 2017 | 6:52 am

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Netki's Digital ID Service Tackles Global Compliance Challenges

Netki Digital ID Tackles Compliance

Netki, the New York–based software startup, wants to make blockchain technology more user friendly by launching its new universal Netki Digital ID service, so that anyone can access services on blockchains without re-validating their ID at every stop. The Netki Digital ID will be both KYC (Know Your Customer) and AML (Anti-Money Laundering) verified, allowing users to access a variety of blockchain businesses including financial institutions like banks, exchanges and healthcare services.

Netki wants their ID to work on any blockchain, public or private, around the world and to provide automated onboarding and validation of new customers, as well as easy sharing of digital identities.

The company’s goal is to create a digital identity certificate that uses a standard recognized by governments everywhere as legally validated, to process transactions anywhere in the world. Pricing will be based on the number of certificates and the complexity of validations.

The Digital ID uses a new peer-to-peer payment protocol (BIP 75) that allows senders, receivers and their financial partners to exchange all four identities via a private encrypted channel.

According to Netki’s announcement, the Netki Digital ID service will allow for the easy capture of an individual’s documents and biometrics via their smartphone, along with multiple levels of automated and manual verification, including database checks, machine learning and biometric analysis.

International Compliance: A “Herculean Task”

Netki IDs are already in use in the U.S. and Europe on the Bitcoin and Ethereum blockchains, and the company is hoping to expand its service both to new jurisdictions around the world and on new blockchain networks.

Netki’s CEO and Co-Founder Justin Newton talked to Bitcoin Magazine about the process of expanding its ID service, despite the challenge of many different legal requirements in an international regulatory environment.

The regulatory landscape is changing around the world at a rapid pace. With this in mind we designed our tools and protocols to be flexible in the case of differing, new or expanding regulatory requirements.

“As we work on each new use case, we work with the customer’s risk and compliance team to determine what requirements are appropriate for their needs.”

Newton told us their team spends time in each new jurisdiction consulting with local regulators before offering their service.

Amber D. Scott, whose company Outlier Solutions  works with blockchain startups on compliance and security issues, admires the spirit and sheer scope of Netki’s undertaking but recognizes that it is a herculean task to have any ID be compliant in every jurisdiction.

She recommends that companies planning to implement any new identification solutions should thoroughly research the requirements of the jurisdictions they are operating in, to ensure “that a solution meets those requirements in their entirety.”

Scott added, “We spend a lot of time with our clients conducting this type of testing, and very few solutions pass the tests.”

Michael Perklin, an internationally recognized security expert who oversees security for ShapeShift, acknowledges that verifying users can be time-consuming and expensive, and agrees that something like a universal ID would make this process easier.

“Many people complain that there are 20+ different identity standards and it seems that Netki is proposing a 21st. It seems like a great idea in theory but its success would depend on the community adopting the Netki ID as the industry standard as opposed to another service like uPort.”

UPort offers a mobile app that allows users to create self-sovereign credentials that would allow them to process transactions on blockchains.

Newton told us that while uPort is focusing on a business model, Netki has open-sourced their protocol. Another important difference between the two companies is that uPort stores private information on the blockchain while Netki stores information off-chain. That being said, Netki is currently partnering with uPort on several projects.

Caribbean Service Bitt Is the Test Case

Netki chose the Caribbean region to test its new service, partnering with fintech company Bitt, which provides a mobile wallet and payment services to anywhere in the world.

Newton told us:

“In terms of the project that we are working on with Bitt, we believe that one of the greatest promises of blockchain [technology] is around financial inclusion. The Caribbean region has far greater mobile phone penetration than banking penetration, and most banking is effectively controlled overseas,” he said.

By creating a locally run and focused alternative, they can lower the cost of remittance, spur inter-island trade and service many people currently excluded from banking and online finance.

Empowering Individuals Over Institutions

Netki’s founders believe that blockchain technology is the game-changer that will take society to the next level, allowing more democratization and levelling of existing silos.

Newton believes that blockchain technology is a means of empowering individuals and changing the way society interacts with each other; however, without easy access for the majority of people, universal adoption will remain a dream.

As part of simplifying and making blockchain technology more user friendly, Netki already offers a wallet-naming service for $9.99 per year, which allows users to register their unwieldy wallet address of letters and numbers to a simple name, making for easier transactions for both users and businesses.

Newton is excited about the future possibilities of blockchain technology for decentralization and democratization, saying:

“For the first time, using the standards we implemented at Bitt, and more broadly with BIP 75, regulated entities such as banks can operate on public networks like bitcoin and ethereum while still meeting their risk and compliance requirements.  With the recent institutional interest, and positive government movement around digital currency, these tools couldn’t come at a better time to enable the ecosystem to really step up to the next level in terms of both usage and opportunity.”

Netki is partnering with IBM in the Hyperledger Project and with PwC Australia in its Vulcan Project.

Investors in Netki incluse O'Reilly, AlphaTech Ventures, Colle Capital, Digital Currency Group, Plug and Play, the Husseine Group, Bitfinex and Base Ventures.


The post Netki's Digital ID Service Tackles Global Compliance Challenges appeared first on Bitcoin Magazine.

Posted on 22 May 2017 | 7:55 pm

ShapeShift Introduces Prism's Trustless Crypto Asset Portfolios

A ShapeShift Into the World of Trustless Asset Portfolios

A ShapeShift Into the World of Trustless Asset Portfolios

“ShapeShift” is a concept describing the ability to change form or identity to adapt to changing conditions. It is also the name of a Swiss-based company that created the world’s first trustless asset portfolio for acquiring digital assets without counterparty risk.

Launched today at the blockchain summit Consensus 2017 held in New York, the cutting-edge platform known as Prism seeks to usher in a new age for investors with a thirst for cryptocurrencies.

The Prism announcement comes on the heels of record-setting growth within the cryptocurrency market, with bitcoin among others advancing to new all-time price highs. Momentum has been further buoyed by a blockchain industry that is already experiencing an incredible diversity of projects, from tokenized venture capital funds to blockchain-based casinos to global distributed computing systems. Prism is the first live platform that enables investors to create their own funds focused on investments in crypto-assets.

This new development is the brainchild of Erik Voorhees, long-time champion of and entrepreneur in the Bitcoin space. ShapeShift, the company he founded in 2013, raised $10.4m during its Series A from leading German VCs in March 2017 to jumpstart this new venture.

Built entirely on Ethereum-based smart contracts, Prism will enable investors to curate portfolios, known as “Prisms,” of digital assets known as “Prisms,” such as Bitcoin, Litecoin, Ethereum, Dash, Monero and Golem. Within minutes, an investor can set up a crypto portfolio — absent of third-party intermediaries — and gain exposure to a wide swath of blockchain tokens. Moreover, they can secure their investments without having to establish a unique wallet for each asset.

With Prism, users will create their portfolios by funding it with ether (the native token of the Ethereum blockchain network). The total amount of ether is divided among whichever assets they decide on, in percentages they elect to allocate to each asset. When the investor is ready to finalize their Prism portfolio, they will be prompted to send a zero-ETH transaction to a provided Ethereum address, signaling the smart contract to close the portfolio.

The beta period for Prism will likely extend for at least six months after the launch, with new features being added over time.

Prism’s approach and philosophy offers an ideal complement to ShapeShift and its established reputation for securing over a million secure transactions for customers since 2014. ShapeShift’s policy of not holding any customer assets or private personal information keeps users safe from identity or financial theft — a critical improvement in digital exchange technology.

ShapeShift is now leveraging their proven model of simplicity and security to cultivate Prism. With this latest development, the complex functionality of a diversified crypto portfolio is distilled down into a simple interface allowing users to buy, rebalance and settle their assets. All of this can be executed by a user with nothing more than their Ethereum wallet.

Prism enables investors to gain secure, transparent exposure to digital assets in a way that has never before been possible. The days of leaving funds at an exchange ‘because it’s easier’ are over. - Erik Voorhees, CEO and founder of ShapeShift and Prism

Voorhees goes on to assert that Prism’s digital asset portfolios, built entirely on non-custodial smart contracts, will demonstrate a new normal for financial security. “Prism takes us one step closer to a world of truly borderless finance. We suspect it will kickstart a vast horizon of financial experimentation upon smart contracts.”

Raine Revere, lead engineer for the Prism project, says that ShapeShift’s focus on simplicity and security was a perfect fit for the design of Prism. “Part of the joy of engineering is seeing how all the pieces will fit together and then systematically carrying out that vision in order to build a working product. That link between vision and functional product is what makes software engineering so special. The vision of Prism was clear from the beginning, allowing this creative process to proceed uninhibited.”

“Gone are the days of trusting a 3rd party with one’s wealth," said Voorhees in a statement. "Prism’s digital asset portfolios, built entirely on non-custodial smart contracts, demonstrates a new standard in financial security.”

The post ShapeShift Introduces Prism's Trustless Crypto Asset Portfolios appeared first on Bitcoin Magazine.

Posted on 22 May 2017 | 5:54 pm

CRYENGINE now accepts Bitcoin

Posted on 29 March 2017 | 1:24 am

Consulting firm EY Switzerland accepts Bitcoin

Posted on 26 November 2016 | 12:47 am

Bitcoin Trading Bots

There have been a wide variety of situations in which algorithmic trading programs have proven to be beneficial for investors. However, investors who only trade a cryptocurrency can also take advantage of bitcoin trading bots. Through bitcoin bot trading, traders can become more flexible and prompt, minimize errors and process information more rapidly. At this… Read More »

Posted on 8 November 2016 | 6:20 pm

Steam accepts Bitcoin

Posted on 29 April 2016 | 1:09 am

Major Magazine Publisher to Accept Bitcoin Payments

Posted on 18 December 2014 | 12:43 pm

Microsoft accepts Bitcoin

Posted on 11 December 2014 | 5:06 am

Mozilla accepting Bitcoin

Posted on 20 November 2014 | 1:55 pm

PayPal and Virtual Currency

Posted on 23 September 2014 | 9:52 pm

Wikimedia Foundation Now Accepts Bitcoin

Posted on 30 July 2014 | 3:14 pm

German Newspaper "taz" accepts Bitcoin

Posted on 22 July 2014 | 1:32 pm

airBaltic - World’s First Airline To Accept Bitcoin

Posted on 22 July 2014 | 11:03 am

Expedia to accept Bitcoin payments for hotel bookings

Posted on 12 June 2014 | 12:41 pm

Bitcoin Core version 0.9.1 released

Posted on 8 April 2014 | 4:27 pm

Bitcoin taxfree in Denmark

Posted on 25 March 2014 | 5:46 pm

May 25, 2017 -
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