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A blockchain, originally block chain, is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block typically contains a cryptographic hash of the previous block, a timestamp and transaction data. By design, a blockchain is inherently resistant to modification of the data. It is "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way". For use as a distributed ledger, a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks, which requires collusion of the network majority. Blockchains are secure by design and are an example of a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been achieved with a blockchain. This makes blockchains potentially suitable for the recording of events, medical records, and other records management activities, such as identity management,transaction processing, documenting provenance, food traceability or voting. Blockchain was invented by Satoshi Nakamoto in 2008 for use in the cryptocurrency bitcoin, as its public transaction ledger.The first work on a cryptographically secured chain of blocks was described in 1991 by Stuart Haber and W. Scott Stornetta.In 1992, Bayer, Haber and Stornetta incorporated Merkle trees to the design, which improved its efficiency by allowing several documents to be collected into one block.In 2002, David Mazières and Dennis Shasha proposed a network file system with decentralized trust: writers to the file system trust one another but not the network in between; they achieve file system integrity by writing signed commits to a shared, append-only signature chain that captures the root of the file system (which in turn is a Merkle Tree). This system can be viewed as a proto-blockchain in which all authorized clients can always write, whereas, in modern blockchains, a client who solves a cryptographic puzzle can write one block.[citation needed] In 2005, Nick Szabo proposed a blockchain-like system for decentralized property titles and his bit gold payment system that utilised chained proof-of-work and timestamping. However, Szabo's method of double-spending protection was vulnerable to Sybil attacks. The first blockchain was conceptualised by a person (or group of people) known as Satoshi Nakamoto in 2008. It was implemented the following year by Nakamoto as a core component of the cryptocurrency bitcoin, where it serves as the public ledger for all transactions on the network.Through the use of a blockchain, bitcoin became the first digital currency to solve the double spending problem without requiring a trusted authority and has been the inspiration for many additional applications. In August 2014, the bitcoin blockchain file size, containing records of all transactions that have occurred on the network, reached 20GB (gigabytes). In January 2015, the size had grown to almost 30GB, and from January 2016 to January 2017, the bitcoin blockchain grew from 50GB to 100GB in size.The words block and chain were used separately in Satoshi Nakamoto's original paper, but were eventually popularized as a single word, blockchain, by 2016. The term blockchain 2.0 refers to new applications of the distributed blockchain database, first emerging in 2014. The Economist described one implementation of this second-generation programmable blockchain as coming with "a programming language that allows users to write more sophisticated smart contracts, thus creating invoices that pay themselves when a shipment arrives or share certificates which automatically send their owners dividends if profits reach a certain level". Blockchain 2.0 technologies go beyond transactions and enable "exchange of value without powerful intermediaries acting as arbiters of money and information". They are expected to enable excluded people to enter the global economy, protect the privacy of participants, allow people to "monetize their own information", and provide the capability to ensure creators are compensated for their intellectual property. Second-generation blockchain technology makes it possible to store an individual's "persistent digital ID and persona" and are providing an avenue to help solve the problem of social inequality by "potentially changing the way wealth is distributed".:14–15 As of 2016, blockchain 2.0 implementations continue to require an off-chain oracle to access any "external data or events based on time or market conditions [that need] to interact with the blockchain". In 2016, the central securities depository of the Russian Federation (NSD) announced a pilot project, based on the Nxt blockchain 2.0 platform, that would explore the use of blockchain-based automated voting systems. IBM opened a blockchain innovation research center in Singapore in July 2016. A working group for the World Economic Forum met in November 2016 to discuss the development of governance models related to blockchain.[28] According to Accenture, an application of the diffusion of innovations theory suggests that blockchains attained a 13.5% adoption rate within financial services in 2016, therefore reaching the early adopters phase. Industry trade groups joined to create the Global Blockchain Forum in 2016, an initiative of the Chamber of Digital Commerce. A blockchain is a decentralized, distributed and public digital ledger that is used to record transactions across many computers so that the record cannot be altered retroactively without the alteration of all subsequent blocks and the collusion of the network. This allows the participants to verify and audit transactions inexpensively. A blockchain database is managed autonomously using a peer-to-peer network and a distributed timestamping server. They are authenticated by mass collaboration powered by collective self-interests.The result is a robust workflow where participants' uncertainty regarding data security is marginal. The use of a blockchain removes the characteristic of infinite reproducibility from a digital asset. It confirms that each unit of value was transferred only once, solving the long-standing problem of double spending. Blockchains have been described as a value-exchange protocol. This blockchain-based exchange of value can be completed more quickly, more safely and more cheaply than with traditional systems. A blockchain can assign title rights because it provides a record that compels offer and acceptance.
Blocks
Blocks hold batches of valid transactions that are hashed and encoded into a Merkle tree. Each block includes the cryptographic hash of the prior block in the blockchain, linking the two. The linked blocks form a chain.This iterative process confirms the integrity of the previous block, all the way back to the original genesis block.
Sometimes separate blocks can be produced concurrently, creating a temporary fork. In addition to a secure hash-based history, any blockchain has a specified algorithm for scoring different versions of the history so that one with a higher value can be selected over others. Blocks not selected for inclusion in the chain are called orphan blocks. Peers supporting the database have different versions of the history from time to time. They only keep the highest-scoring version of the database known to them. Whenever a peer receives a higher-scoring version (usually the old version with a single new block added) they extend or overwrite their own database and retransmit the improvement to their peers. There is never an absolute guarantee that any particular entry will remain in the best version of the history forever. Because blockchains are typically built to add the score of new blocks onto old blocks and because there are incentives to work only on extending with new blocks rather than overwriting old blocks, the probability of an entry becoming superseded goes down exponentially as more blocks are built on top of it, eventually becoming very low. For example, in a blockchain using the proof-of-work system, the chain with the most cumulative proof-of-work is always considered the valid one by the network. There are a number of methods that can be used to demonstrate a sufficient level of computation. Within a blockchain the computation is carried out redundantly rather than in the traditional segregated and parallel manner.
The block time is the average time it takes for the network to generate one extra block in the blockchain. Some blockchains create a new block as frequently as every five seconds. By the time of block completion, the included data becomes verifiable. In cryptocurrency, this is practically when the money transaction takes place, so a shorter block time means faster transactions. The block time for Ethereum is set to between 14 and 15 seconds, while for bitcoin it is 10 minutes.Express. Why is Ripple XRP falling today? Why is it crashing in value?Ripple price: Why is Ripple XRP falling today? Why is it… 'Ripple is first in line' - CEO reveals next cryptocurrency to catch up with bitcoin
'Ripple is first in line' - CEO reveals next cryptocurrency to…
Ripple price news: Why is XRP falling so fast? What's happening to Ripple?Ripple price news: Why is XRP falling so fast? What's happening… Bitcoin price BOOST: Big investors are FINALLY realising Bitcoin is GAME-CHANGING Bitcoin price WARNING: CEO says cryptocurrency has 'NOTHING to do with the real economy' BITCOIN has come under fire from the CEO of Euronext as the financial expert claimed the cryptocurrency "has nothing to do with the real economy".
Bitcoin price suffered a massive plunge as the cryptocurrency reached the value of $9,114.56, according to Coindesk at 10:37 pm on February. As the crypto-craze started to die down, Euronext CEO Stéphane Boujnah claims bitcoin cannot even be classified as a cryptocurrency. Speaking on Bloomberg, Mr Boujnah said Euronext will never open a bitcoin market. He said: "We will not create a bitcoin market because the mandate of Euronext is to power Pan-European capital markets to finance the real economy and bitcoin has nothing to do with the real economy. "Bitcoin has a lot to do with bitcoin. And we believe bitcoin is not a cryptocurrency.
"Bitcoin is at best a crypto asset. All currencies are assets but not all assets are currencies. "Clearly, bitcoin today is just like a piece of art, or just like a diamond, just like a Pokemon card.
"It can be anything to capture value but today people buy it because it goes up and because it’s not as serious and transparent as a lot of assets. "So great, good luck. Like any emerging assets, it’s very fancy, which is great, but this is not our mandate. "Our mandate is to be the place regulated, transparent, open, reliable. It’s not our mandate to be part of this new game in town." Despite the rollercoaster few months suffered by the crypto mania, bitcoin and other cryptocurrencies such as Ripple and ethereum still benefit from a "growing" appreciation among institutional investors, according to Dr Garrick Hileman, from the Cambridge University Centre for Alternative Finance.In an exclusive interview with Express.co.uk, Dr Hileman said: "Any breakthrough technology, and bitcoin and blockchain, are certainly breakthrough technologies, hype often outpaces the reality. “In terms of both of how mature the technology is, the rates of adoption. “We’ve seen this before with bitcoin and we’ve seen the price shoot up first in late 2013 when it first entered the mainstream public consciousness. “The price subsequently crashed 85 percent as security at a major exchange broke down and bitcoin’s were stolen. “So we’ve seen this kind of story repeat where bitcoin rises, gets hyped and then there’s a crash.” This section is transcluded from Fork (blockchain). A hard fork occurs when a blockchain splits into two incompatible separate chains. This is a consequence of the use of two incompatible sets of rules trying to govern the system. For example, Ethereum has hard-forked to "make whole" the investors in The DAO, which had been hacked by exploiting a vulnerability in its code. In 2014 the Nxt community was asked to consider a hard fork that would have led to a rollback of the blockchain records to mitigate the effects of a theft of 50 million NXT from a major cryptocurrency exchange. The hard fork proposal was rejected, and some of the funds were recovered after negotiations and ransom payment.
Decentralization
By storing data across its network, the blockchain eliminates the risks that come with data being held centrally. The decentralized blockchain may use ad-hoc message passing and distributed networking. Its network lacks centralized points of vulnerability that computer crackers can exploit; likewise, it has no central point of failure. Blockchain security methods include the use of public-key cryptography. A public key (a long, random-looking string of numbers) is an address on the blockchain. Value tokens sent across the network are recorded as belonging to that address. A private key is like a password that gives its owner access to their digital assets or the means to otherwise interact with the various capabilities that blockchains now support. Data stored on the blockchain is generally considered incorruptible. This is where blockchain has its advantage. While centralized data is more controllable, information and data manipulation are common. By decentralizing it, blockchain makes data transparent to everyone involved. Every node in a decentralized system has a copy of the blockchain. Data quality is maintained by massive database replication[9] and computational trust. No centralized "official" copy exists and no user is "trusted" more than any other. Transactions are broadcast to the network using software. Messages are delivered on a best-effort basis. Mining nodes validate transactions, add them to the block they are building, and then broadcast the completed block to other nodes. Blockchains use various time-stamping schemes, such as proof-of-work, to serialize changes. Alternate consensus methods include proof-of-stake. Growth of a decentralized blockchain is accompanied by the risk of node centralization because the computer resources required to process larger amounts of data become more expensive.
Openness
Open blockchains are more user-friendly than some traditional ownership records, which, while open to the public, still require physical access to view. Because all early blockchains were permissionless, controversy has arisen over the blockchain definition. An issue in this ongoing debate is whether a private system with verifiers tasked and authorized (permissioned) by a central authority should be considered a blockchain. Proponents of permissioned or private chains argue that the term "blockchain" may be applied to any data structure that batches data into time-stamped blocks. These blockchains serve as a distributed version of multiversion concurrency control (MVCC) in databases. Just as MVCC prevents two transactions from concurrently modifying a single object in a database, blockchains prevent two transactions from spending the same single output in a blockchain.[24]:30–31 Opponents say that permissioned systems resemble traditional corporate databases, not supporting decentralized data verification, and that such systems are not hardened against operator tampering and revision. Nikolai Hampton of Computerworld said that "many in-house blockchain solutions will be nothing more than cumbersome databases."Business analysts Don Tapscott and Alex Tapscott define blockchain as a distributed ledger or database open to anyone.
Permissionless
The great advantage to an open, permissionless, or public, blockchain network is that guarding against bad actors is not required and no access control is needed.This means that applications can be added to the network without the approval or trust of others, using the blockchain as a transport layer.
Bitcoin and other cryptocurrencies currently secure their blockchain by requiring new entries including a proof of work. To prolong the blockchain, bitcoin uses Hashcash puzzles developed by Adam Back in the 1990s.
Financial companies have not prioritised decentralized blockchains. In 2016, venture capital investment for blockchain related projects was weakening in the USA but increasing in China. Bitcoin and many other cryptocurrencies use open (public) blockchains. As of January 2018, bitcoin has the highest market capitalization.
Permissioned (private) blockchain
Permissioned blockchains use an access control layer to govern who has access to the network. In contrast to public blockchain networks, validators on private blockchain networks are vetted by the network owner. They do not rely on anonymous nodes to validate transactions nor do they benefit from the network effect. Permissioned blockchains can also go by the name of 'consortium' or 'hybrid' blockchains.
The New York Times noted in both 2016 and 2017 that many corporations are using blockchain networks "with private blockchains, independent of the public system."
Disadvantages
Nikolai Hampton pointed out in Computerworld that "There is also no need for a "51 percent" attack on a private blockchain, as the private blockchain (most likely) already controls 100 percent of all block creation resources. If you could attack or damage the blockchain creation tools on a private corporate server, you could effectively control 100 percent of their network and alter transactions however you wished." This has a set of particularly profound adverse implications during a financial crisis or debt crisis like the financial crisis of 2007–08, where politically powerful actors may make decisions that favor some groups at the expense of others.[citation needed] and "the bitcoin blockchain is protected by the massive group mining effort. It's unlikely that any private blockchain will try to protect records using gigawatts of computing power — it's time consuming and expensive."He also said, "Within a private blockchain there is also no 'race'; there's no incentive to use more power or discover blocks faster than competitors. This means that many in-house blockchain solutions will be nothing more than cumbersome databases."
Uses
Blockchain technology can be integrated into multiple areas. The primary use of blockchains today is as a distributed ledger for cryptocurrencies, most notably bitcoin.While a few central banks, in countries such as China, United States, Sweden, Singapore, South Africa and England are studying issuance of a Central Bank Issued Cryptocurrency (CICC), none have done so thus far.
General potentials
Blockchain technology has a large potential to transform business operating models in the long term. Blockchain distributed ledger technology is more a foundational technology—with the potential to create new foundations for global economic and social systems—than a disruptive technology, which typically "attack a traditional business model with a lower-cost solution and overtake incumbent firms quickly".Even so, there are a few operational products maturing from proof of concept by late 2016.The use of blockchains promises to bring significant efficiencies to global supply chains, financial transactions, asset ledgers and decentralized social networking.
As of 2016, some observers remain skeptical. Steve Wilson, of Constellation Research, believes the technology has been hyped with unrealistic claims.To mitigate risk businesses are reluctant to place blockchain at the core of the business structure.
This means specific blockchain applications may be a disruptive innovation, because substantially lower-cost solutions can be instantiated, which can disrupt existing business models. Blockchain protocols facilitate businesses to use new methods of processing digital transactions.[68] Examples include a payment system and digital currency, facilitating crowdsales, or implementing prediction markets and generic governance tools.
Blockchains alleviate the need for a trust service provider and are predicted to result in less capital being tied up in disputes. Blockchains have the potential to reduce systemic risk and financial fraud. They automate processes that were previously time-consuming and done manually, such as the incorporation of businesses.In theory, it would be possible to collect taxes, conduct conveyancing and provide risk management with blockchains.
As a distributed ledger, blockchain reduces the costs involved in verifying transactions, and by removing the need for trusted "third-parties" such as banks to complete transactions, the technology also lowers the cost of networking, therefore allowing several applications.
Starting with a strong focus on financial applications, blockchain technology is extending to activities including decentralized applications and collaborative organizations that eliminate a middleman.
Land registration
"Land is a financial source, if people can prove they own it, they can borrow against it."
Emmanuel Noah, CEO of Ghanian startup BenBen, New York Observer
Frameworks and trials such as the one at the Sweden Land Registry aim to demonstrate the effectiveness of the blockchain at speeding land sale deals.The Republic of Georgia is piloting a blockchain-based property registry.The Ethical and Fair Creators Association uses blockchain to help startups protect their authentic ideas.
The Government of India is fighting land fraud with the help of a blockchain.
In October 2017, one of the first international property transactions was completed successfully using a blockchain-based smart contract.
In the first half of 2018, an experiment will be conducted on the use of blocking technology to monitor the reliability of the Unified State Real Estate Register (USRER) data in the territory of Moscow.
The Big Four
Each of the Big Four accounting firms is testing blockchain technologies in various formats. Ernst & Young has provided cryptocurrency wallets to all (Swiss) employees,has installed a bitcoin ATM in their office in Switzerland, and accepts bitcoin as payment for all its consulting services. Marcel Stalder, CEO of Ernst & Young Switzerland, stated, "We don't only want to talk about digitalization, but also actively drive this process together with our employees and our clients. It is important to us that everybody gets on board and prepares themselves for the revolution set to take place in the business world through blockchains, [to] smart contracts and digital currencies."PwC, Deloitte, and KPMG have taken a different path from Ernst & Young and are all testing private blockchains.
Smart contracts
Blockchain-based smart contracts are contracts that can be partially or fully executed or enforced without human interaction.One of the main objectives of a smart contract is automated escrow. The IMF believes blockchains could reduce moral hazards and optimize the use of contracts in general.Due to the lack of widespread use their legal status is unclear.
Some blockchain implementations could enable the coding of contracts that will execute when specified conditions are met. A blockchain smart contract would be enabled by extensible programming instructions that define and execute an agreement.For example, Ethereum Solidity is an open-source blockchain project that was built specifically to realize this possibility by implementing a Turing-complete programming language capability to implement such contracts.
Nonprofit organizations
Level One Project from the Bill & Melinda Gates Foundation aims to use blockchain technology to help the two billion people worldwide who lack bank accounts.
Building Blocks project from the U.N.'s World Food Programme (WFP) aims to make WFP's growing cash-based transfer operations faster, cheaper, and more secure. Building Blocks commenced field pilots in Pakistan in January 2017 that will continue throughout spring.
Decentralized networks
The Backfeed project develops a distributed governance system for blockchain-based applications allowing for the collaborative creation and distribution of value in spontaneously emerging networks of peers.[88][89]
The Alexandria project is a blockchain-based Decentralized Library.
Tezos is a blockchain project that governs itself by voting of its token holders. Bitcoin blockchain performs as a cryptocurrency and payment system. Ethereum blockchain added smart contract system on top of a blockchain. Tezos blockchain will add an autonomy system – a decentralized code Development function on top of both bitcoin and Ethereum blockchains.
Governments and national currencies
The director of the Office of IT Schedule Contract Operations at the US General Services Administration, Mr. Jose Arrieta, disclosed at the 20 Sep ACT-IAC (American Council for Technology and Industry Advisory Council) Forum that its organization is using blockchain distributed ledger technology to speed up the FASt Lane process for IT Schedule 70 contracts through automation. Two companies, United Solutions (prime contractor) and Sapient Consulting (subcontractor) are developing for FASt Lane a prototype to automate and shorten the time required to perform the contract review process.
The Commercial Customs Operations Advisory Committee, a subcommittee of the U.S. Customs and Border Protection, is working on finding practical ways Blockchain could be implemented in its duties.[1]
Companies have supposedly been suggesting blockchain-based currency solutions in the following two countries:
e-Dinar, Tunisia's national currency, was the first state currency using blockchain technology.
eCFA is Senegal's blockchain-based national digital currency.
Some countries, especially Australia, are providing keynote participation in identify the various technical issues associated with developing, governing and using blockchains:
In April 2016 Standards Australia submitted a New Field of Technical Activity (NFTA) proposal on behalf of Australia for the International Organization for Standardization (ISO) to consider developing standards to support blockchain technology. The proposal for an NFTA to the ISO was intended to establish a new ISO technical committee for blockchain. The new committee would be responsible for supporting innovation and competition by covering blockchain standards topics including interoperability, terminology, privacy, security and auditing.[99] There have been several media releases[100] supporting blockchain integration to Australian businesses.
Banks
Don Tapscott conducted a two-year research project exploring how blockchain technology can securely move and store host "money, titles, deeds, music, art, scientific discoveries, intellectual property, and even votes".. Furthermore, major portions of the financial industry are implementing distributed ledgers for use in banking, and according to a September 2016 IBM study, this is occurring faster than expected.
Banks are interested in this technology because it has potential to speed up back office settlement systems.
Banks such as UBS are opening new research labs dedicated to blockchain technology in order to explore how blockchain can be used in financial services to increase efficiency and reduce costs.
Russia has officially completed its first government-level blockchain implementation. The state-run bank Sberbank announced 20 December 2017 that it is partnering with Russia's Federal Antimonopoly Service (FAS) to implement document transfer and storage via blockchain.
Deloitte and ConsenSys announced plans in 2016 to create a digital bank called Project ConsenSys.
R3 connects 42 banks to distributed ledgers built by Ethereum, Chain.com, Intel, IBM and Monax.
A Swiss industry consortium, including Swisscom, the Zurich Cantonal Bank and the Swiss stock exchange, is prototyping over-the-counter asset trading on a blockchain-based Ethereum technology.
Other financial companies.
The credit and debits payments company MasterCard has added three blockchain-based APIs for programmers to use in developing both person-to-person (P2P) and business-to-business (B2B) payment systems.
CLS Group is using blockchain technology to expand the number of currency trade deals it can settle.
VISA payment systems, Mastercard,Unionpay and SWIFT have announced the development and plans for using blockchain technology.
Prime Shipping Foundation is using blockchain technology to address issues related to the payments in the shipping industry.
Other uses
Blockchain technology can be used to create a permanent, public, transparent ledger system for compiling data on sales, storing rights data by authenticating copyright registration,[116] and tracking digital use and payments to content creators, such as musicians. In 2017, IBM partnered with ASCAP and PRS for Music to adopt blockchain technology in music distribution.Imogen Heap's Mycelia service, which allows managers to use a blockchain for tracking high-value parts moving through a supply chain, was launched as a concept in July 2016. Everledger is one of the inaugural clients of IBM's blockchain-based tracking service.
Kodak announced plans in 2018 to launch a digital token system for photograph copyright recording.
Another example where smart contracts are used is in the music industry. Every time a dj mix is played, the smart contracts attached to the dj mix pays the artists almost instantly.
An application has been suggested for securing the spectrum sharing for wireless networks.
New distribution methods are available for the insurance industry such as peer-to-peer insurance, parametric insurance and microinsurance following the adoption of blockchain.The sharing economy and IoT are also set to benefit from blockchains because they involve many collaborating peers.Online voting is another application of the blockchain. Blockchains are being used to develop information systems for medical records, which increases interoperability. In theory, legacy disparate systems can be completely replaced by blockchains.Blockchains are being developed for data storage, publishing texts and identifying the origin of digital art. Blockchains facilitate users could take ownership of game assets (digital assets),an example of this is Cryptokitties.
Notable non-cryptocurrency designs include:
Steemit – a blogging/social networking website and a cryptocurrency
Hyperledger – a cross-industry collaborative effort from the Linux Foundation to support blockchain-based distributed ledgers, with projects under this initiative including Hyperledger Burrow (by Monax) and Hyperledger Fabric (spearheaded by IBM)
Counterparty – an open source financial platform for creating peer-to-peer financial applications on the bitcoin blockchain
Quorum – a permissionable private blockchain by JPMorgan Chase with private storage, used for contract applications
Bitnation – a decentralized borderless "voluntary nation" establishing a jurisdiction of contracts and rules, based on Ethereum
Factom, a distributed registry
Tezos, decentralized voting.
Microsoft Visual Studio is making the Ethereum Solidity language available to application developers.
IBM offers a cloud blockchain service based on the open source Hyperledger Fabric project
Oracle Cloud offers Blockchain Cloud Service based on Hyperledger Fabric. Oracle has joined the Hyperledger consortium.
In August 2016, a research team at the Technical University of Munich published a research document about how blockchains may disrupt industries. They analyzed the venture funding that went into blockchain ventures. Their research shows that $1.55 billion went into startups with an industry focus on finance and insurance, information and communication, and professional services. High startup density was found in the USA, UK and Canada.
ABN Amro announced a project in real estate to facilitate the sharing and recording of real estate transactions, and a second project in partnership with the Port of Rotterdam to develop logistics tools.
Academic research
Blockchain panel discussion at the first IEEE Computer Society TechIgnite conference
In October 2014, the MIT Bitcoin Club, with funding from MIT alumni, provided undergraduate students at the Massachusetts Institute of Technology access to $100 of bitcoin. The adoption rates, as studied by Catalini and Tucker (2016), revealed that when people who typically adopt technologies early are given delayed access, they tend to reject the technology.
Journals
In September 2015, the first peer-reviewed academic journal dedicated to cryptocurrency and blockchain technology research, Ledger, was announced. The inaugural issue was published in December 2016. The journal covers aspects of mathematics, computer science, engineering, law, economics and philosophy that relate to cryptocurrencies such as bitcoin. There are also research platforms like Strategic coin that offer research for the blockchain and crypto space.
The journal encourages authors to digitally sign a file hash of submitted papers, which will then be timestamped into the bitcoin blockchain. Authors are also asked to include a personal bitcoin address in the first page of their papers.
Predictions
A World Economic Forum report from September 2015 predicted that by 2025 ten percent of global GDP would be stored on blockchains technology.
In early 2017, Harvard Business School professors Marco Iansiti and Karim R. Lakhani said the blockchain is not a disruptive technology that undercuts the cost of an existing business model, but is a foundational technology that "has the potential to create new foundations for our economic and social systems". They further predicted that, while foundational innovations can have enormous impact, "It will take decades for blockchain to seep into our economic and social infrastructure."
Tim Draper with Coinbase CEO Brian Armstrong and moderator Jason Calacanis.
Brian: “Bitcoin was my first true love.”
“But it broke my heart." He had great hopes for extensions of the platform for things like smart contracts, and it just didn't happen. "Now my heart belongs to Ethereum."
Jason closed with Bitcoin price predictions for 2027. Brian bet $100K/BTC. Jason took the under bet. And Tim says the price will go up 10,000x across all cryptocurrencies (with an argument about the value of 1.8 billion wallets, squared).
BTC just crossed $8K for the first time today.
Images are more effective than texts, are they not? Of course! This is why, here at Coin News Telegraph, we produce highly engaging visual contents, covering a diverse range of topics in Blockchain. Our team of in-house designers and illustrators ensure you stay up-to-date with the latest crypto news, ICO news, Bitcoin price and more in the most interesting way.
A lot is happening in the cryptocurrency and Blockchain world. Doesn’t it get difficult to keep up with everything? Sure, it does. But honestly, it shouldn’t! Find engaging and super-amazing visual contents at Coin News Telegraph. We make sure you keep up-to-date with the latest Crypto news, Bitcoin price and everything else in the most fun way.
This image is excerpted from a U.S. GAO report: www.gao.gov/products/GAO-14-496
VIRTUAL CURRENCIES: Emerging Regulatory, Law Enforcement, and Consumer Protection Challenges
Note: The index is a composite price calculated as the simple average of bitcoin prices across leading global exchanges that meet certain criteria. The values are expressed in current U.S. dollars.
Bitcoin looks set to topple the $10,000 mark across global exchanges today.
While BTC is yet to pass the notable milestone on western exchanges, trading in Asia has already seen the cryptocurrency hit as high as $10,086 today.
Bitcoin first started peeping above the psychological hurdle on...
cryptotradingedge.com/news-updates/10000-bitcoin-price-no...
Drawing historical parallels from the “tulip-mania” that swept across Netherlands/Europe in the 1630s to the speculation currently going on around crypto-currencies, the video work Mosaic Virus is generated by an artificial intelligence (AI). This AI has been trained on 10,000 photographs of tulips that the artist took and then labelled to make the piece Myriad (Tulips). It then uses this information to create a tulip blooming, an updated version of a Dutch still life for the 21st century. The appearance of the tulip is controlled by bitcoin price.
Credit: vog.photo
Welcome to Satoshi Square’s Bitcoin Event
On this Sunday, Bitcoin fans will gather together at satoshi square to spread the spirit of bitcoin.
We invited zhangzhang, the composer of the famous bitcoin song “we are all bitcoins” to bring his band. He will give us an onsite concert. We also invited dalong， MBA professor, researcher in Chinese academy of science. He will show us his 3 fingers concept, and his idea about how bitcoin may make world a better place.
We also invited friends from venture capital, bitcoin startups to give us speeches about how they are doing to develop bitcoin world.
Free to enter, free beverage
100 RMB per person for dinner
Address: Satoshi square, 706 north St. north gate of 798 Art Zone, Chaoyang District
Time: 25th of May, Sunday, 2pm
www.bitecoin.com/online/2014/05/6426.html
5月25日，比特币的文艺青年们邀请你来798艺术区狂欢
发表于 2014/05/20 编辑： admin — 暂无评论
5月25日, 这一天让我们不再紧盯盘面，忘记比特币的价格波动，让我们享受智力的激荡和心灵的共鸣，重新找回比特币青春期的极客精神。这里不再有大咖和小白的区分，这里有比特币世界最好玩的应用和最酷的团队，带上你身边最文艺的妹子，一起来参加798中本聪广场的比特币自由盛会吧！
让我们介绍两位充满理想气质的比特币文艺青年，他们对于比特币都有着自己的理解：
张张， 比特币音乐人，“我们都是比特币”作者、演唱者。他将宣布最新的比特币微电影众筹计划，并携自己的乐队为大家带来精彩的晚场演出。
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大龙， 加拿大籍友人，香港中文大学 MBA教授，加拿大蒙特利尔大学HEC商学院MBA教授，中科院研究员，参演姜文2014年新片并饰演白求恩。他将向我们介绍他的三指哲学和on chain生活理念。
May 25 , bitcoin young artists who invite you to the 798 Art District Carnival
Posted on 2014/05/20 Editor : admin - No Comments
May 25 , the day we are no longer glued to the disk , forget Bitcoin price volatility , let us enjoy the sympathy of the intellectual and spiritual agitation , rediscover bitcoin adolescent geek spirit. There is no longer a large coffee and white distinction , there bitcoin world's most fun and coolest applications team , to bring you around the most literary sister , an up and participate in the bitcoin 798 Cong Freedom Square event it !
Let us introduce two idealistic young artists bitcoins temperament , they have their own currency for a bit of understanding :
Zhang , Bitcoin musicians, "We are all Bitcoin " Author , artist . He will announce the latest micro film bitcoins plan to raise the public , and to bring the band to bring their wonderful evening performances .
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DaLong , Canadian friends, professors MBA Chinese University of Hong Kong , Professor HEC Montreal Business School MBA University , Chinese Academy of Sciences researcher , Jiang 2014 film starred and played Bethune . He will introduce us to his three fingers on chain philosophy and philosophy of life .
Bitcoin News on Evergrade's 300 Billion Debt Crisis Impacts Crypto Markets
Link: youtu.be/zcGF_6k9V3k
Analysts are wondering whether China's second-largest property developer, Evergrande Group, could default on its $300 billion in debts, posing a danger of contagion for the crypto industry.
Evergrande has since admitted that it will be unable to sell homes or other assets in its control quickly enough to service its rapidly increasing obligations, as Fitch Ratings stated on Sept. 8 that it "appears probable" that the company will default on its loans.
Evergrande predicted a "major continuing fall in contract sales in September," leading in "further worsening of cash collection by the Group" and putting "tremendous pressure on the Group's cash flow and liquidity," according to a statement released Tuesday. The following was added to the document:
Tether, the leading stablecoin issuer, may have exposure to commercial paper issued by the "$300 billion debt monster," according to Australian economist David Llewellyn-Smith, who also warned that Bitcoin (BTC) may be one of Entergrande's counterparties due to Tether's (USDT) dominance as a BTC pairing. Tether, on the other hand, has refuted this.
Tether's most recent attestation report indicated that $30.8 billion of its $62.8 billion in assets is kept in commercial paper, with the Financial Times estimating that the company is among the top 10 holders of the product globally.
Onlookers are concerned that Evergrande's demise may have far-reaching consequences for the commercial paper market, with Reuters identifying the company as "the largest issuer of commercial papers," with $32 billion in assets as of late 2020.
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#EverGrandeGroup
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Link: youtu.be/zcGF_6k9V3k
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Bitcoin price crash. Bitcoin losing value and price decreasing. GIVE ATTRIBUTION TO: BeatingBetting.co.uk
Drawing historical parallels from the “tulip-mania” that swept across Netherlands/Europe in the 1630s to the speculation currently going on around crypto-currencies, the video work Mosaic Virus is generated by an artificial intelligence (AI). This AI has been trained on 10,000 photographs of tulips that the artist took and then labelled to make the piece Myriad (Tulips). It then uses this information to create a tulip blooming, an updated version of a Dutch still life for the 21st century. The appearance of the tulip is controlled by bitcoin price.
Credit: vog.photo
Drawing historical parallels from the “tulip-mania” that swept across Netherlands/Europe in the 1630s to the speculation currently going on around crypto-currencies, the video work Mosaic Virus is generated by an artificial intelligence (AI). This AI has been trained on 10,000 photographs of tulips that the artist took and then labelled to make the piece Myriad (Tulips). It then uses this information to create a tulip blooming, an updated version of a Dutch still life for the 21st century. The appearance of the tulip is controlled by bitcoin price.
Credit: vog.photo
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Bitcoin price increase visualisation. Bitcoin market value continues to increase. GIVE ATTRIBUTION TO: BeatingBetting.co.uk
Cryptoworld.news provide you latest cryptocurrency news, Here you find complete information about comexcoin, bitcoin wallet, bitcoin mining, bitcoin, bitcoin exchange, bitcoin price.
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The bitcoin price has tumbled following the shutdown of Mt. Gox, the virtual currency's largest online trading platform, over missing bitcoins due to theft.
Photo of a Bitcoin medallion with a red graph graph in the background resembling a drop in value or price crash. This is an image we created for a blog article but have since then decided to distribute it under the Attribution Creative Commons licence for you to use. If you use it, please credit us with ownership of the image by linking to cryptowallet.com/
Bitcoin prices rose slightly this morning to give the cryptocurrency market a small boost. this is the start of the recovery.Hopefully this one will be continuous and Crypto market value will be able to recover.
Concept image of a Bitcoin price surge. The image shows a Bitcoin medallion with a green chart in the background resembling a rise in value. This is an image released under the Attribution Creative Commons license. You can use it as you wish though we do ask that you credit cryptowallet.com/ with a link.
www.youtube.com/watch?v=x2RZRAM8vgo
In Today's video we will discuss the current Bitcoin Price. Ethereum and other cryptocurrency news. The Cardano (ADA) Little birds Goldman Sachs struggling to keep up with demand, and more... 0:00 Rundown
6:30 Market Watch
13:00 Bitcoin Chart
18:55 $10k - $1M?
28:30 Little ADA Birds
33:45 EIP Hash Wars
41:25 Goldman Sachs
47:30 $500k BTC vs Gold
54:10 Ethereum Chart
1:00:40 ETH NUPL
1:12:07 101: Too Late for BTC? ByBit, Market Cipher, Ledger, TokenMetrics, Crypto.com & more!
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Find Crypto DEALS ➡️ bitboycrypto.com/deals Connect with Me & the BitSquad!
Join the BitSquad ➡️ t.me/BitSquad
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Join Me on TikTok ➡️ www.tiktok.com/@BitBoyCrypto All of our videos are strictly personal opinions. Please make sure to do your own research. Never take one person's opinion for financial guidance. There are multiple strategies and not all strategies fit all people. Our videos ARE NOT financial advice.
maximumhorrors.com/bitcoin-to-500k-by-september-best-time...
Roller coasters are the showcase demo of VR experiences. *The Coupled Data Intercomparison Extended Reality Roller Coaster*, however, sets you up for a ride along real datasets. The tours take you up and down the crude oil price over last 160 years, the Dow Jones Industrial Average (last 100 years), the bitcoin price, the global temperature anomalies of the last 150 years or the atmospheric C02 concentration of the last 800,000 years!
Photo: Michael Aschauer
Bitcoin is a way to for investors to basically move their money off the balance sheets of banks and into their own wallets,” he added. “Essentially storing their money under their pillow in the form of virtual currency.
cryptoworld.news/2018/05/31/bitcoin-price-may-fear-gauge-...
Bitcoin Price Reach $64,000 in 2019 Analysis By Fundstrat, The study conducted by Wall Street strategy firm Fundstrat Global Advisors, argues that that the ratio between the bitcoin price and miners’ breakeven cost
cryptoworld.news/2018/05/10/bitcoin-price-reach-64000-201...
With how much Bitcoin's price vs USD is fluctuating right now, you can't really tell when I made this. But thought I'd record some random stock footage of the Bitcoin charts via cryptowat.ch/
A pile of Bitcoin medallions on a scale with a stack of dollar bills.
This image has been distributed under the Attribution Creative Commons license. This means you can use the image for free as long as you credit cryptowallet.com/ with a link.
www.youtube.com/watch?v=loah4QqcBz8
In today's video, we will discuss the latest Bitcoin and Crypto News. Bitcoin Price. Money printing is the only move left for Central banks, and more... ByBit, Market Cipher, Ledger, TokenMetrics, Crypto.com & more!
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Join the BitSquad ➡️ t.me/BitSquad
Join the BitBoy Lab ➡️ discord.BitBoy.Live
Join BitSquad Traders ➡️ t.me/BitSquadTraders
Join Me on Twitter ➡️ twitter.com/Bitboy_Crypto
Join Me on Instagram ➡️ www.instagram.com/bitboy_crypto
Join Me on TikTok ➡️ www.tiktok.com/@BitBoyCrypto All of our videos are strictly personal opinions. Please make sure to do your own research. Never take one person's opinion for financial guidance. There are multiple strategies and not all strategies fit all people. Our videos ARE NOT financial advice. Intro 00:00
Market Watch 4:24
Bitcoin Chart 10:30
$1k to $10k Update 18:07
Why I'm Bullish 24:05
The Last Push 32:03
$69M NFT 39:36
Future of Crypto 47:20
Ethereum Chart 54:40
Cardano Dip/Dot 1:03:29
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maximumhorrors.com/best-time-to-accumulate-bitcoin-do-not...