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/biz/ - Business & Finance


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15429365 No.15429365 [Reply] [Original]

Do you remember link last year?

Do you remember the fear uncertainty and doubt?

Do you remember the price range of $.17 to $0.28 that practically drove us borderline mad?

Do you remember complete silence from the team?

Do you remember topbots?

Do you remember tens of thousands of idiots flooding this board with their nano and request propaganda?
Do you like your beef wagyu?

Do you remember an anonymous individual who had a predilection for high intakes of alcoholic content and whose prophecies had a higher hit rate than Nostradamus itself?

Do you remember random telegram groups?

Do you remember a certain individual who inspired an entire goddamn smart contracts Revolution via his projectile content blasting from his ass on our most beloved Polynesian basket weaving forum?

Whatever happened to all those early adopters, who saw the light before others, and was inspired by the darkness around them to go all-in?

Post some of your best memes, and if it strikes a sympathetic chord, I may drop some juicy breadcrumbs.

Dont worry, lots of food to go around.

As the saying goes, we are all in this together, do not underestimate the power of positive thought, especially collective positive thought. This shit will go to $1,000 EOY easily.

Never underestimate the power of memetic magic either. We have stolen Trump's meme glory and we're just getting started.

>> No.15429390
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15429390

>>15429365
We are all in this together

>> No.15429418
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15429418

There is an old Irish story of a man who dreamt for three straight nights of treasure in a specific location under a stone; on the fourth night he went out with a neighbour to dig for it. The two men used holy water to mark a circle around the stone to keep the fairies out and began digging. The fairies appeared in the form of horses but couldn't approach due to the circle of holy water so when the men found the gold the fairies turned it all into frogs. Nonetheless the men filled their sack with the frogs and when they got home they found the sack filled with gold.

>> No.15429419

>>15429365
>am i fearful?
why yes I am.
>do i experience a pang of uncertainty?
of course! i am ever aware of the stultifying thread of the Dunning Kruger effect!
>am i doubtful?
plainly. am i not mortal? the narrative surrounding this token has jumped the shark, and the poor quality shilling betrays the low intelligence of the remaining baggies.

>> No.15429445
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>> No.15429465

How many co-authors of Towncrier are also co-authors and/or advisors of Town Crier, advisors to Chainlink, and affiliated with IC3?

>> No.15429489

>>15429365
>do you remember
>do you remember
>do you remember
Stop babbling you stupid bagholding fuck. Nobody here held centralized ERC coins. Too dumb to sell at $4.50 weren’t you? Go back to Rebbit.

>> No.15429509
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>>15429365
Pls sir. Give me a good dose of hopium.

>> No.15429510

Co-authors of Ekiden:
Raymond Cheng, Fan Zhang, Jernej Kos, Warren He, Nicholas Hynes, Noah Johnson, Ari Juels, Andrew Miller, Dawn Song

Co-authors of TownCrier:
Fan Zhang, Ethan Cecchetti, Kyle Croman, Ari Juels, Elaine Shi

Co-authors of Chainlink and Advisors status? How much of an overlap is there?

>> No.15429525

PDFS: Practical Data Feed Service for Smart Contracts

Look it up. Here's a sample:
"Smart contracts are a new paradigm that emerged with the rise of the blockchain technology. They allow untrusting parties to arrange agreements. These agreements are encoded as a programming language code and deployed on a blockchain platform, where all participants execute them and maintain their state. Smart contracts are promising since they are automated and decentralized, thus limiting the involvement of third trusted parties, and can contain monetary transfers. Due to these features, many people believe that smart contracts will revolutionize the way we think of distributed applications, information sharing, financial services, and infrastructures.
To release the potential of smart contracts, it is necessary to connect the contracts with the outside world, such that they can understand and use information from other infrastructures. For instance, smart contracts would greatly benefit when they have access to web content. However, there are many challenges associated with realizing such a system, and despite the existence of many proposals, no solution is secure, provides easily-parsable data, introduces small overheads, and is easy to deploy.
In this paper we propose PDFS, a practical system for data feeds that combines the advantages of the previous schemes and introduces new functionalities. PDFS extends content providers by including new features for data transparency and consistency validations. This combination provides multiple benefits like content which is easy to parse and efficient authenticity verification without breaking natural trust chains. PDFS keeps content providers auditable, mitigates their malicious activities (like data modification or censorship), and allows them to create a new business model. We show how PDFS is integrated with existing web services, report on a PDFS implementation and present results from conducted case studies and experiments."

>> No.15429529
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15429529

plz

>> No.15429543

Has anyone looked into this report sponsored by the European Union's blockchain forum?


https://www.eublockchainforum.eu/sites/default/files/research-paper/convergence_of_blockchain_ai_and_iot_academic_2.pdf

>> No.15429554

'A Blockchain based Witness Model for Trustworthy Cloud Service Level Agreement Enforcement'

Worth looking into. Here's a sample:
"Traditional cloud Service Level Agreement (SLA) suffers from lacking a trustworthy platform for automatic enforcement. The emerging blockchain technique brings in an immutable solution for tracking transactions among business partners. However, it is still very challenging to prove the credibility of possible violations in the SLA before recording them onto the blockchain. To tackle this challenge, we propose a witness model using game theory and the smart contract techniques. The proposed model extends the existing service model with a new role called “witness” for detecting and reporting service violations. Witnesses gain revenue as an incentive for performing these duties, and the payoff function is carefully designed in a way that trustworthiness is guaranteed: in order to get the maximum profit, the witness has to always tell the truth. This is analyzed and proved through game theory using the Nash equilibrium principle. In addition, an unbiased sortition algorithm is proposed to ensure the randomness of the independent witnesses selection from the decentralized witness pool, to avoid possible unfairness or collusion. An auditing mechanism is also introduced in the paper to detect potential irrational or malicious witnesses. We have prototyped the system leveraging the smart contracts of Ethereum blockchain. Experimental results demonstrate the feasibility of the proposed model and indicate good performance in accordance with the design expectations."

>> No.15429560

>>15429554
Who are the authors you ask?

Huan Zhou
Informatics Institute, University of Amsterdam, Amsterdam, XH, 1098, the Netherlands
Xue Ouyang
National University of Defense Technology, Changsha, 410073, China
Zhijie Ren
Department of Intelligent Systems, Delft University of Technology, Delft, CD, 2628, the Netherlands
Jinshu Su
National University of Defense Technology, Changsha, 410073, China
Cees de Laat
Informatics Institute, University of Amsterdam, Amsterdam, XH, 1098, the Netherlands
Zhiming Zhao
Informatics Institute, University of Amsterdam, Amsterdam, XH, 1098, the Netherlands

>> No.15429572

Worth reading for a better foundational understanding on the significance of smart contracts for the insurance industry:

http://www.diva-portal.org/smash/get/diva2:1214254/FULLTEXT02.pdf

>> No.15429590

Election Voting Using Block Chain Technology Prof. Hiren M Patel1, Prof.Milin M Patel2, Prof.Tejas Bhutan
1,2,3Assistant Professor, 1,2,3Computer Engineering Department, SVIT Vasad.
ABSTRACT: -Government officials, pundits, and citizens alike have often commented about or bemoan the fact that many elections are plagued by low voter turnout. That's true even for president elections in the US. Blockchain could reverse the course of civilization and upend the world's most powerful companies Businesses often win by centralizing resources and extracting value, and today's governments and financial systems empower them to do it. Blockchain changes the equation. Online voting as an alternative to paper ballots or electronic voting machines has been suggested as a way to not only boost the number of active voters, but possibly even address election security and integrity issues. Might blockchain, a technology that continues to draw attention from technology.While the concept of block chain is not necessarily easy to grasp or explain, blockchain voting could see some momentum in the years to come as it's explored for various types of elections. At the very least, election officials, politicians, and vote counters need to be aware of the potential of this new voting mechanism.

http://www.ijsrr.co.in/images/full_pdf/1556719942_S501.pdf

>> No.15429606

>>15429572
>The world is becoming more and more digitized. Most companies use computers in their
everyday work and more and more people use their smart phones to do work on. One
industry that so far has not adopted new technology in the same pace as other industries,
is the insurance industry. The reason for this could be because of internal struggles over
resources and career advancement within management (Knights & Murray, 1992). This
is about to change though. In 2016 the Blockchain Insurance Industry Initiative (B3i) was
formed as a collaboration between insurers and reinsurers to find out how Distributed
Ledger Technologies (DLT) could benefit all the different stakeholders in the value chain
(B3i, 2017). For instance, blockchain technology can offer more than just a way to create
digital currencies (Nofer, Gomber, Hinz & Shiereck, 2016). Furthermore, it can be used
as a replacement for the intermediate trust such as banks or governments because security
is built-in. Instead of allowing banks or other institutions to act as guarantee, trust can be
used by the blockchain technology and allow digital contracts to form (Alcazar, 2017).

THIS is the proficiency in language required in a sufficient master thesis?
what a shit world

>> No.15429611

From Oracles to Trustworthy Data On-chaining Systems

Jonathan Heiss, Jacob Eberhardt, Stefan Tai
Information System Engineering TU Berlin
Berlin, Germany {jh,je,st}@ise.tu-berlin.de

http://www.redaktion.tu-berlin.de/fileadmin/fg308/publications/2019/Heiss-et-al-oracles_preprint.pdf


Abstract—Many blockchain transactions require blockchain- external data sources to provide data. Oracle systems have been proposed as a link between blockchains and blockchain- external resources. However, these Oracle systems vary greatly in assumptions and applicability and each system addresses the challenge of data on-chaining partly. We argue that Data On- chaining must be done in a trustworthy manner and, as a first contribution, define a set of key requirements for Trustworthy Data On-chaining. Further, we provide an in-depth assessment and comparison of state-of-the-art Oracle systems with regards to these requirements. This differentiation pinpoints the need for a uniform understanding of and directions for future research on Trustworthy Data On-chaining.

>> No.15429626

"The Blockchain is a newly emerging technology recently generalized to many areas of activity. Its decentralized mode of operation fits perfectly into several scenarios where the primary challenge lies in improving machine-to-machine communication and the ability to achieve secure transfers with value-added services. IoT networks are one of the possible areas of application of Blockchain technology since the current of IoT networks architecture has limitations that do not comply with industry requirements, which can be overcome by improving communications between devices and by accessing more advanced forms of aggregation and collected data consumption.
This work assesses the combination of these two paradigms - IoT and Blockchain -, to evaluate how the IoT can benefit from the functionalities offered by the Blockchain: a more economical storage system, full decentralization and true redundancy, trust without a central authority and improved security. On the other hand, Blockchain as a financial infrastructure for IoT is also a fundamental aspect of this work. In the built-in proof of concept, this scenario is implemented, since data captured by a sensor can be transacted to a requesting entity.
Statistical and performance analysis are performed on the implemented architecture, and some areas of improvement are also pointed out that could to leverage the system’s adoption in real life situations."

http://recil.grupolusofona.pt/handle/10437/9275

>> No.15429638

Introducing Zlite.

Abstract. Cryptocurrencies record transactions between parties in a blockchain maintained by a peer-to-peer network. In most cryptocurren- cies, transactions explicitly identify the previous transaction providing the funds they are spending, revealing the amount and sender/recipient pseudonyms. This is a considerable privacy issue. Zerocash resolves this by using zero-knowledge proofs to hide both the source, destination and amount of the transacted funds. To receive payments in Zerocash, how- ever, the recipient must scan the blockchain, testing if each transaction is destined for them. This is not practical for mobile and other bandwidth constrained devices. In this paper, we build ZLiTE, a system that can support the so called “light clients”, which can receive transactions aided by a server equipped with a Trusted Execution Environment. Even with the use of a TEE, this is not a trivial problem. First, we must ensure that server processing the blockchain does not leak sensitive information via side channels. Second, we need to design a bandwidth efficient mech- anism for the client to keep an up-to-date version of the witness needed in order to spend the funds they previously received.

https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/system-security-group-dam/research/publications/pub2019/zlite.pdf

>> No.15429643
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15429643

The time is now anon

>> No.15429651

We need some hopium

>> No.15429657

memes aside, as someone who works in the space nobody wants/cares about chainlink
here's the strangest thing: you guys have been so effective at memeing, the noise about chainlink is large enough legitimate teams start wondering "what's this chainlink stuff i keep hearing about". and because sergey plays the high-level con game and shows up at conferences, it gives an appearance of legitimacy too
then you guys see these teams asking about chainlink... meme "bend the knee", and convince yourselves this implies chainlink is legit
it's the purest scam ever, a virtuous loop between mostly separate communities. it's too bad they're dumping now instead of keeping it up, because when you see the less elaborate scams on CMC, i feel link has runway still

>> No.15429668

'Enforcing Private Data Usage Control with Blockchain and Attested Off-chain Contract Execution'

"The abundance of rich varieties of data is enabling many transformative applications of big data analytics that have profound societal impacts. However, there are also increasing concerns regarding the improper use of individual users' private data. Many argue that the technology that customizes our experience in the cyber domain is threatening the fundamental civil right to privacy.
In this paper, we propose PrivacyGuard, a system that leverages smart contract in blockchain and trusted execution environment to enable individuals' control over other parties' access and use of their private data. In our design, smart contracts are used to specify data usage policy (i.e. who can use what data under which conditions along with how the data can be used), while the distributed ledger is used to keep an irreversible and non-repudiable record of data usage. To address the contract execution efficiency problem, as well as to prevent exposing user data on the publicly viewable blockchain, we construct a novel off-chain contract execution engine which realizes trustworthy contract execution off-chain in an trusted execution environment (TEE). By running the contract program inside a hardware-assisted TEE, the proposed off-chain trustworthy contract execution improves system efficiency significantly, as its correctness does not rely on distributed consensus which essentially requires the contract program be executed on all miner nodes. In order to leverage TEE in off-chain execution, PrivacyGuard has to several technical challenges such as synchronous function completion and scalability mitigation in blockchain platform. We build and deploy a prototype of PrivacyGuard using Ethereum and Intel SGX, and our experiments demonstrate the feasibility to support data-intensive applications using data from a large number of users."

>> No.15429669

IC3?

>> No.15429677

>>15429668
Close IC3 connections:
Yang Xiao, Ning Zhang, Wenjing Lou, Y. Thomas Hou

>> No.15429691

"Blockchains offer an interesting solution to some of the security challenges encountered in military applications. They are particularly attractive in the scenarios, where it is difficult or even impossible to establish a common root of trust, e.g., in the context of civil-military collaboration, where military organizations need to build trusted information exchange infrastructure with various types of civilian governmental and non-governmental organizations, local communities, commercial companies and private persons. In our work, we discuss how blockchain can be used to store metadata describing information collected from the IoT devices owned by the federation members as well as crowdsourced from sensors belonging to private users. We present a high level architecture for a metadata binding solution using blockchains compliant with STANAG 4774 and 4778. We also describe a concrete technical solution based on Hyperledger Fabric and some of the open issues."

Who are the authors? Well, none other than:
Konrad Wrona
NATO Communications and Information Agency, The Hague, The Netherlands
Michal Jarosz
Military University of Technology, Warsaw, Poland

'Use of blockchains for secure binding of metadata in military applications of IoT'

>> No.15429697

"Blockchain in supply chain management is expected to boom over the next five years. It is estimated that the global blockchain supply chain market would grow at a compound annual growth rate of 87% and increase from $45 million in 2018 to $3,314.6 million by 2023. Blockchain will improve business for all global supply chain stakeholders by providing enhanced traceability, facilitating digitisation, and securing chain-of-custody. This paper provides a synthesis of the existing challenges in global supply chain and trade operations, as well as the relevant capabilities and potential of blockchain. We further present leading pilot initiatives on applying blockchains to supply chains and the logistics industry to fulfill a range of needs. Finally, we discuss the implications of blockchain on customs and governmental agencies, summarize challenges in enabling the wide scale deployment of blockchain in global supply chain management, and identify future research directions."

'Blockchain in Global Supply Chains and Cross Border Trade: A Critical Synthesis of the State-of-the-Art, Challenges and Opportunities'

IC3 close-ties:
Yanling Chang, Eleftherios Iakovou, Weidong Shi4

>> No.15429708

"We consider IoT resources with a Trusted Execution Environment (TEE) and propose a model to provide trusted resource access that is linked to blockchain payments, ensuring the integrity and confidentiality of the IoT data. The model is built on the widely used OAuth 2.0 open authorization framework, which provides delegated authorization for IoT resources. We utilize hash-lock and time-lock mechanisms to cryptographically link trusted resource access, provided by the IoT resource's TEE, to authorization grants and blockchain payments. The model is implemented in the OP-TEE open source port for the Raspberry Pi that uses ARM's TrustZone and is evaluated on the Rinkeby public Ethereum testnet."

'IoT Resource Access utilizing Blockchains and Trusted Execution Environments'

Authors:
Vasilios A. Siris
Mobile Multimedia Laboratory, Athens University of Economics and Business, Greece
Dimitrios Dimopoulos
Mobile Multimedia Laboratory, Athens University of Economics and Business, Greece
Nikos Fotiou
Mobile Multimedia Laboratory, Athens University of Economics and Business, Greece
Spyros Voulgaris
Mobile Multimedia Laboratory, Athens University of Economics and Business, Greece
George C. Polyzos
Mobile Multimedia Laboratory, Athens University of Economics and Business, Greece

>> No.15429719

FastKitten: Practical Smart Contracts on Bitcoin

Authors:
Poulami Das, Lisa Eckey, Tommaso Frassetto, David Gens, Kristina Hostáková, Patrick Jauernig, Sebastian Faust, and Ahmad-Reza Sadeghi, Technische Universität Darmstadt, Germany

Abstract:
Smart contracts are envisioned to be one of the killer applications of decentralized cryptocurrencies. They enable self-enforcing payments between users depending on complex program logic. Unfortunately, Bitcoin – the largest and by far most widely used cryptocurrency – does not offer support for complex smart contracts. Moreover, simple contracts that can be executed on Bitcoin are often cumbersome to design and very costly to execute. In this work we present FastKitten, a practical framework for executing arbitrarily complex smart contracts at low costs over decentralized cryptocurrencies which are designed to only support simple transactions. To this end, FastKitten leverages the power of trusted computing environments (TEEs), in which contracts are run off-chain to enable efficient contract execution at low cost. We formally prove that FastKitten satisfies strong security properties when all but one party are malicious. Finally, we report on a prototype implementation which supports arbitrary contracts through a scripting engine, and evaluate performance through benchmarking a provably fair online poker game. Our implementation illustrates that FastKitten is practical for complex multi-round applications with a very small latency. Combining these features, FastKitten is the first truly practical framework for complex smart contract execution over Bitcoin.

>> No.15429738

I have more, but digest the info shared first. Bump if interested.

I want MEMES!

>> No.15429755
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>> No.15429802

'Secure Brokered Delegation Through DelegaTEE'

Authors...

Moritz Schneider
Information Security, Eidgenossische Technische Hochschule Zurich, Switzerland
Moritz Schneider is a Ph.D. student at the Institute of Information Security, Eidgenössische Technische Hochschule (ETH) Zürich. His research interests include hardware security, trusted execution, and system security. Schneider received a M.S. in electrical engineering from ETH Zürich. Contact him at moritz.schneider@inf.ethz.ch.
Sinisa Matetic
Information Security, Eidgenossische Technische Hochschule Zurich, Switzerland
Sinisa Matetic is a senior researcher at the Institute of Information Security, Eidgenössische Technische Hochschule (ETH) Zürich. His research interests include system security focusing on distributed systems, trusted hardware, and blockchain-based technology design and integrity protection. Matetic received a Ph.D. in computer science from ETH Zürich. Contact him at sinisa.matetic@inf.ethz.ch.

>> No.15429807
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>> No.15429811

>>15429802
Ari Juels
Jacobs Technion-Cornell Institute, Cornell Tech, New York, New York United States
Ari Juels is a professor at the Jacobs Technion-Cornell Institute, Cornell Tech, New York. He is also a codirector of the Initiative for Cryptocurrencies and Contracts. His research interests include applied cryptography, blockchains and smart contracts, cloud security, and the use of deception in computer security. Juels received a Ph.D. in computer science from the University of California, Berkeley. Contact him at juels@cornell.edu.
Andrew Miller
Computer Science, University of Illinois at Urbana–Champaign, United States
Andrew Miller is an assistant professor in the Department of Electrical and Computer Engineering and an affiliate in the Department of Computer Science at the University of Illinois at Urbana–Champaign. He is also an associate director of the Initiative for Cryptocurrencies and Contracts and a board member of the Zcash Foundation. His research interests include computer security and the design of secure decentralized systems and cryptocurrencies. Miller received a Ph.D. in computer science from University of Maryland. Contact him at soc1024@illinois.edu.
Srdjan Capkun
Information Security, Eidgenossische Technische Hochschule Zurich, Switzerland
Srdjan Capkun is a full professor in the Department of Computer Science at Eidgenössische Technische Hochschule Zürich and director of the Zürich Information Security and Privacy Center. His research interests include system and network security, particularly wireless security. Capkun received a Ph.D. in communication systems from the École Polytechnique Fédérale de Lausanne, Switzerland. Contact him at srdjan.capkun@inf.ethz.ch.

>> No.15429831
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>> No.15429833

"An apparatus in one embodiment comprises a processing platform having at least one processing device. The processing platform implements a trusted bridge configured for at least temporary coupling between one or more data sources and a smart contract program of a blockchain. The trusted bridge comprises a secure enclave component and a relay component. Data obtained from a given one of the data sources via the relay component of the trusted bridge is authenticated in the secure enclave component of the trusted bridge. Information based at least in part on the data authenticated in the secure enclave component of the trusted bridge is provided to the smart contract program of the blockchain via the relay component of the trusted bridge. The secure enclave component illustratively receives a request for authenticated data from the blockchain smart contract program via the relay component, and responds to the request via the relay component."

Inventors: Fan Zhang, Ethan Cecchetti,Kyle Croman, Ari Juels, Runting Shi

>> No.15429843

>>15429833
'Authenticated data feed for blockchains'

>> No.15429847
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>> No.15429855
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>> No.15429861
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>> No.15429869

This academic writing hasn't gotten the attention it rightfully deserves. Just how influential is this piece? Take a look:
Jun Dai and Miklos A. Vasarhelyi (2017) Toward Blockchain-Based Accounting and Assurance. Journal of Information Systems: Fall 2017, Vol. 31, No. 3, pp. 5-21.

>> No.15429872
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>> No.15429877

>>15429869
Who referenced? Have a looker:

Cited by

Laurie Hughes, Yogesh K. Dwivedi, Santosh K. Misra, Nripendra P. Rana, Vishnupriya Raghavan and Viswanadh Akella. (2019) Blockchain research, practice and policy: Applications, benefits, limitations, emerging research themes and research agenda. International Journal of Information Management 49, 114-129.
Online publication date: 1-Dec-2019.
Crossref
Purva Grover, Arpan Kumar Kar and Marijn Janssen. (2019) Diffusion of blockchain technology. Journal of Enterprise Information Management 32:5, 735-757.

>> No.15429879
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15429879

>> No.15429885

>>15429877
Purva Grover, Arpan Kumar Kar and Marijn Janssen. (2019) Diffusion of blockchain technology. Journal of Enterprise Information Management 32:5, 735-757.
Online publication date: 4-Sep-2019.

Nicholas McGuigan and Alessandro Ghio. (2019) Art, accounting and technology: unravelling the paradoxical “in-between”. Meditari Accountancy Research ahead-of-print:ahead-of-print.
Online publication date: 12-Aug-2019.

>> No.15429895

>>15429885
Roberto Mavilia and Roberta Pisani. (2019) Blockchain and catching-up in developing countries: The case of financial inclusion in Africa. African Journal of Science, Technology, Innovation and Development 17, 1-13.
Online publication date: 3-Aug-2019.

Hemang Subramanian. (2019) Security tokens: architecture, smart contract applications and illustrations using SAFE. Managerial Finance ahead-of-print:ahead-of-print.
Online publication date: 31-Jul-2019.

2019. References. Leading and Managing Change in the Age of Disruption and Artificial Intelligence, 169

>> No.15429902

Levi Dolan, Bethany Kavanaugh, Kevin Korinek and Brittney Sandler. (2019) Off the Chain: Blockchain Technology—An Information Organization System. Technical Services Quarterly 36:3, 281-295.
Online publication date: 16-Jul-2019.

Kim Sundtoft Hald and Aseem Kinra. (2019) How the blockchain enables and constrains supply chain performance. International Journal of Physical Distribution & Logistics Management 49:4, 376-397.
Online publication date: 13-Jun-2019.

>> No.15429911
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>> No.15429915

Jodie Moll and Ogan Yigitbasioglu. (2019) The role of internet-related technologies in shaping the work of accountants: New directions for accounting research. The British Accounting Review.
Online publication date: 1-Apr-2019.

Miguel-Angel Sicilia and Anna Visvizi. (2019) Blockchain and OECD data repositories: opportunities and policymaking implications. Library Hi Tech 37:1, 30-42.
Online publication date: 18-Mar-2019.

>> No.15429921

ROTE: Rollback Protection for Trusted Execution

Authors:
Sinisa Matetic, Mansoor Ahmed, Kari Kostiainen, Aritra Dhar, David Sommer, and Arthur Gervais, ETH Zurich; Ari Juels, Cornell Tech; Srdjan Capkun, ETH Zurich

Abstract:
Security architectures such as Intel SGX need protection against rollback attacks, where the adversary violates the integrity of a protected application state by replaying old persistently stored data or by starting multiple application instances. Successful rollback attacks have serious consequences on applications such as financial services. In this paper, we propose a new approach for rollback protection on SGX. The intuition behind our approach is simple. A single platform cannot efficiently prevent rollback, but in many practical scenarios, multiple processors can be enrolled to assist each other. We design and implement a rollback protection system called ROTE that realizes integrity protection as a distributed system. We construct a model that captures adversarial ability to schedule enclave execution and show that our solution achieves a strong security property: the only way to violate integrity is to reset all participating platforms to their initial state. We implement ROTE and demonstrate that distributed rollback protection can provide significantly better performance than previously known solutions based on local non-volatile memory.

>> No.15429927

'ZEUS: Analyzing Safety of Smart Contracts'
Authors:

Sukrit Kalra
IBM Research sukrit.kalra@in.ibm.com
Seep Goel
IBM Research sgoel219@in.ibm.com
Mohan Dhawan
IBM Research mohan.dhawan@in.ibm.com
Subodh Sharma IIT Delhi svs@iitd.ac.in

>> No.15429939

>>15429927
"A smart contract is hard to patch for bugs once it is deployed, irrespective of the money it holds. A recent bug caused losses worth around $50 million of cryptocurrency. We present ZEUS—a framework to verify the correctness and validate the fairness of smart contracts. We consider correctness as adherence to safe programming practices, while fairness is adherence to agreed upon higher-level business logic. ZEUS leverages both abstract interpretation and symbolic model checking, along with the power of constrained horn clauses to quickly verify contracts for safety. We have built a prototype of ZEUS for Ethereum and Fabric blockchain platforms, and evaluated it with over 22.4K smart contracts. Our evaluation indicates that about 94.6% of contracts (containing cryptocurrency worth more than $0.5 billion) are vulnerable. ZEUS is sound with zero false negatives and has a low false positive rate, with an order of magnitude improvement in analysis time as compared to prior art."

>> No.15429946

>>15429939
http://pages.cpsc.ucalgary.ca/~joel.reardon/blockchain/readings/ndss2018_09-1_Kalra_paper.pdf

>> No.15429964

Blockchain and Trusted Computing: Problems, Pitfalls, and a Solution for Hyperledger Fabric

Marcus Brandenburger, Christian Cachin, Rüdiger Kapitza, Alessandro Sorniotti

A smart contract on a blockchain cannot keep a secret because its data is replicated on all nodes in a network. To remedy this problem, it has been suggested to combine blockchains with trusted execution environments (TEEs), such as Intel SGX, for executing applications that demand privacy. Untrusted blockchain nodes cannot get access to the data and computations inside the TEE.
This paper first explores some pitfalls that arise from the combination of TEEs with blockchains. Since TEEs are, in principle, stateless they are susceptible to rollback attacks, which should be prevented to maintain privacy for the application. However, in blockchains with non-final consensus protocols, such as the proof-of-work in Ethereum and others, the contract execution must handle rollbacks by design. This implies that TEEs for securing blockchain execution cannot be directly used for such blockchains; this approach works only when the consensus decisions are final.
Second, this work introduces an architecture and a prototype for smart-contract execution within Intel SGX technology for Hyperledger Fabric, a prominent platform for enterprise blockchain applications. Our system resolves difficulties posed by the execute-order-validate architecture of Fabric and prevents rollback attacks on TEE-based execution as far as possible. For increasing security, our design encapsulates each application on the blockchain within its own enclave that shields it from the host system. An evaluation shows that the overhead moving execution into SGX is within 10%-20% for a sealed-bid auction application.

>> No.15429977

>>15429964
I'm going to read all of these walls of text when I get off of work anon, thanks for the contribution kameraden.

>> No.15429982

>>15429977
It's a lot of information to digest. I admit, but it's certainly worth the read.

>> No.15430003

DID YA MISS ME FAGGOT PUSSIES AHAHAHAHAHAHA

AHAHAHHAHAHAHAHAHAHHAHAHAHAHAHAHAHAHA


AHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHHAHA

WHERE YA AT STINKERS? HAHAHAHAHAHAHA I CANT HEAR YOOOOOOU!!!!!

>> No.15430038

>>15430003
Who?

>> No.15430081

bump

>> No.15430117

>>15429964
Tldr, should I buy this dip?

>> No.15430124

every alt coin that went to list on coinbase never again beat its all time high... let that sink in

ripple, etc, zrx, link, bat..

>> No.15430129

>>15430117
YEAH DUDE BUY THE DIP GOGOGO

>> No.15430140

>>15430124
>every alt coin that went to list on coinbase never again beat its all time high... let that sink in

Ethereum was listed on Coinbase under $20. What happened, brainlet?

LINK is as essential to crypto as Bitcoin and Ethereum.

>> No.15430181

protip: nobody will use smart contracts.

>> No.15430210

>>15430181
>protip: nobody will use smart contracts
Kek. I see you haven't read the academic breadcrumbs shared in this thread. You're outside your IQ threshold. Back away before you hurt your noggin.

>> No.15430241
File: 156 KB, 1113x1200, 1563050831843.jpg [View same] [iqdb] [saucenao] [google]
15430241

>>15429365

>> No.15430277

>>15429489
https://www.youtube.com/watch?v=Gs069dndIYk

>> No.15430319

>>15430003
Fuck, I miss that dude. It was a nice reading

>> No.15430372

>>15430277
Oracle Oracle Oracle and 50 start-ups

>> No.15430402

>>15429509
Anyone know what happened to Astro?

>> No.15430464

>>15430181
Pro tip, nobody will use Amazon. Its just for books

>> No.15430475

>>15430464
>, nobody will use Amazon. Its just for books
Here's another Pro tip, nobody has ever heard of Google, they're literally a nobody. I have no idea why they would want to partner up with an obscure startup for their big query data

>> No.15430505
File: 1.34 MB, 480x360, 43F8ED37-13C9-47B7-9381-7DDF3CC4196B.gif [View same] [iqdb] [saucenao] [google]
15430505

>> No.15430511

>>15430464
protip, amazon only raised 1mil before it was self sustaining through revenue.

Chainlink has raised 32mil and cashed out probably another 20mil and still have less than 50 users. It is objectively a scam.

>> No.15430545

>>15430475
protip, that was a fake partnership aka just a blog post

>> No.15430561

>>15430545
>protip, that was a fake partnership aka just a blog post
Are you stupid or larping as stupid? Either way, have sex incel.

>> No.15430580

bump

>> No.15430603

>>15430511
Wrong. Amazon is deep state, just like Chainlink.

>> No.15430626

>>15430511
>Chainlink has raised 32mil and cashed out probably another 20mil and still have less than 50 users. It is objectively a scam.
Kek, have sex

>> No.15430876

>>15430402
That's Sean Rutledge you poor unpotty trained nigger

>> No.15431183

Bump, this actually useful information in this thread

>> No.15431195

Wen moon tho

>> No.15431212

>>15431183
Tldr version?

>> No.15431304
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15431304

>>15430140
>LINK is as essential to crypto as Bitcoin and Ethereum.
Good God what kind of drugs are you on? LINK isnt ETH and never will be, and ETH is becoming obsolete. ETH didnt go on coinbase and drop to $1.79 in a few months either.

>> No.15431339

>>15431304
>Link isn’t ETH and never will be.
Yes
>ETH is becoming obsolete
If true, So? Link isn’t ETH.
>ETH didn’t dump after listing on Coinbase.
Obviously a retarded statement.

If you’re going to fud at least try to target people with IQs above room temperature.

>> No.15431360
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15431360

>> No.15431466

>>15431212
>Tldr version
Aren't you aware that intjs eat all over this? They literally eat this as a snack, a tasty snack, I wouldn't even describe the breadcrumb shared as little nuggets, I will call these very good morsels.

>> No.15431488

>>15431304
>Good God what kind of drugs are you on?
Okay, it's apparent that you're not the brightest light bulb in the room, but do you need me to read to you, too?

>> No.15431530

>>15429365

I DREAM OF PREGNANT SIR-GAY EVERYNITE

>> No.15431543

>>15431530
>I DREAM OF PREGNANT SIR-GAY EVERYNITE
Money belly money belly money belly money belly money belly money belly money belly money belly money belly

>> No.15431602

>>15431304
>Good God what kind of drugs are you on? LINK isnt ETH and never will be, and ETH is becoming obsolete. ETH didnt go on coinbase and drop to $1.79 in a few months either.
I can always spot a room temperature IQ person from a mile away.

https://www.forbes.com/sites/michaeldelcastillo/2019/08/29/hyperledger-unanimously-approves-first-ethereum-codebase-for-enterprises/#7c2e5f84794c


Just released today, I know it might be difficult for you to read out, but sound out the letters and you'll make sense of the article

>> No.15431621

We get it OP, you feel dumb because your life savings are worth less than half what they were a month ago and you want to convince yourself you didn’t fuck up. This thread is cope. $1.75

>> No.15431671

>>15431602
>control+f chainlink
>0 results

>> No.15431717
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15431717

bump

This thread is golden for those who get it.

This is practically ebic bread for early '17 adopters. Based OP.

>> No.15431718

>>15431602
>https://www.forbes.com/sites/michaeldelcastillo/2019/08/29/hyperledger-unanimously-approves-first-ethereum-codebase-for-enterprises/#7c2e5f84794c
Ethereum And ChainLink are both dumping to hell.

It’ll be a long time (if ever) until a business pays for an Ethereum or ChainLink token

>> No.15431769
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15431769

>>15431621
>We get it OP, you feel dumb because your life savings are worth less than half what they were a month ago and you want to convince yourself you didn’t fuck up. This thread is cope. $1.75

The thread is signaling.

First off, who has the intellect to read through the various documents OP has guided us to read?

OP is signalling to the under 40 cent crowd and he certainly has my attention.

Reading his posts and fucking off at work.

Thank OP

You're invited to by yacht

>> No.15431784
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15431784

>>15431602
I read it, it stinks. Smell ya later linkie

>> No.15431830
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15431830

Those who said Sergey has no vision (the same speech!) have not been paying attention, particularly to his earliest appearances.

Chainlink is being constructed to fill the role of an idealised arbiter of truth, connected to the most perfectly dispassionate executor, in the form of public smart contract chains.

This is in fulfilment of the deepest Platonic ideals of contract and governance that have ever been conceived, but which have remained out of reach, mere approximations even under the highest forms of lawful Republic, as at every step human capriciousness asserts itself and corrodes the final product, the freedom of contract found when our pledges are given force by Leviathan. Alas, ‘from the crooked timbers of humanity, no straight thing was ever made’.

By redrawing the locus of consensus as that of a precise ledger with sound game-theoretical guarantees at its edges, and iron-clad stricture within, rather than a continuously renegotiated knife fight, the level of trust required to engage in mutually beneficial enterprise plummets precipitously.

But what does it plummet to? The trust required is now neatly circumscribed to the trust in the information delivered unto our new Leviathan. There is fortunately a market for this trust, a pool of agents who are willing to stake their reputation and collateral on any piece of digitisable information on which it is possible to come to consensus. The truth is a most excellent Schelling point, and one which well-incentivised agents can reliably settle on.

Do not underestimate the power and the generality of this arrangement in its maturity, nor the amount of human and economic potential that this will unlock.

Welcome to the trust market

>> No.15431928

>>15430277
i dont. schizophrenia in post format.

>> No.15431942
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15431942

>>15430277
Checked.

>> No.15432010
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15432010

Ahem, what is this?

>> No.15432034
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15432034

>> No.15432059
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15432059

>> No.15432248

>>15431928
replied to wrong post my bad

>> No.15432278

Not reading, never bought

>> No.15432292
File: 7 KB, 201x251, 462EAC3B-DF68-4E4E-ACBE-73CB090F4430.jpg [View same] [iqdb] [saucenao] [google]
15432292

Rent free frens

>> No.15432428
File: 1.05 MB, 1080x2280, Screenshot_20190829-021049_Drive.jpg [View same] [iqdb] [saucenao] [google]
15432428

>>15432278
Dont worry. Watch from a distance.