Accountability in blockchain

The authors — Vincent Gramoli and Pierre Civit of the University of Sydney, and Seth Gilbert of the National University of Singapore — developed the Polygraph protocol, which automates accountability in blockchains to hold participants accountable for double spending, a notoriously knotty issue in cryptography. The coalition does not participate to the consensus in order to violate the liveness property…. Note that safety is also violated: When a client invokes the read primitive, the coalition can answer arbitrary values, despite the non-termination of the legitimate consensus. The client is supposed to trust the coalition, like all the other clients who can forever receive a different output for the read primitive. This makes the blockchain vulnerable to a double-spending attack.



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WATCH RELATED VIDEO: HealthSapiens: Improving health care and accountability with blockchain tech

Balancing Privacy and Accountability in Blockchain Identity Management


Springer Professional. Back to the search result list. Table of Contents. Hint Swipe to navigate through the chapters of this book Close hint. Abstract The lack of privacy in the first generation of cryptocurrencies such as Bitcoin, Ethereum, etc. To overcome this problem, several new cryptocurrencies were designed to guarantee transaction privacy and anonymity for their users examples include ZCash, Monero, etc.

It is also well known that the alleged or real anonymity guarantees provided by cryptocurrencies have attracted ill-intentioned individuals to this space, who look at cryptocurrencies as a way of facilitating illegal activities tax-evasion, ransom-ware, trading of illegal substances, etc.

The fact that current cryptocurrencies do not comply with such regulations can in part explain why traditional financial institutions have so far been very sceptical of the ongoing cryptocurrency and Blockchain revolution. In this paper, we propose a novel design principle for identity management in Blockchains.

The goal of our design is to maintain privacy, while still allowing compliance with current regulations and preventing exploitations of Blockchain technology for purposes which are incompatible with the social good. Please log in to get access to this content Log in Register for free. To get access to this content you need the following product:. Springer Professional "Technik" Online-Abonnement.

Springer Professional "Wirtschaft" Online-Abonnement. Note that the environment provides all inputs and sees all outputs. It can therefore observe that an account is created right after it instructed an account holder to create an account, and can make the connection between the two.

This corresponds to the fact that in a real application an adversary may know that in a long time interval, only one user creates an account, and so the next account that shows up on chain must belong to that user. Of course, our system cannot prevent this - the best we can do is to make sure that the account itself is anonymous.

This follows in our model because the ideal adversary - the simulator - will not learn the identity of the holder and will still have to produce account information which are indistinguishable from the real protocol, thus proving that the account information leaks no information about its holder. Accessed 01 June In: Shacham, H.

LNCS, vol. Springer, Cham In: De Prisco, R. SCN Springer, Heidelberg IEEE Syst. In: Cramer, R. In: Bertino, E. ACM Press November In: 42nd FOCS. In: Carlet, C. C2SI Plenum Press, New York In: Jacobson, M. SAC In: Chen, L. In: Vaudenay, S. IACR Cryptol. In: Susilo, W. ProvSec In: 33rd FOCS. PKC IACR Trans. In: Galbraith, S. In: Odlyzko, A.

In: Johansson, T. SIAM J. In: Cachin, C. In: Ioannidis, J. ACNS In: Feigenbaum, J. In: Zohar, A. FC In: Sako, K. CT-RSA In: Fischlin, M. In: Albrecht, M. IMACC In: Lee, P. In: Yung, M. Publisher Springer International Publishing.



Perspective and Challenges of Blockchain Technology in the Accountability of Financial Information

Token management systems have been a central application of blockchain technology ever since its early days. Despite their popularity, though, the scope of their adoption has been limited by their lack of privacy protection. This is for instance the case in systems like Bitcoin and Ethereum where transactions are submitted in plaintext to the blockchain, making them linkable and traceable. While the privacy of transactions is important, it should not come at the cost of transparency and auditability, two especially important features in permissioned networks. These networks derive some of their advantages from a strong identity management and the promise to ensure accountability and non-deniability. To meet these requirements, we introduce a new token management based on the unspent transaction model UTXO pioneered by Bitcoin and that leverages the properties of permissioned networks to allow for authorization and auditing of transactions. Let us review some of the most relevant previous work aimed at improving privacy in this context.

accountability in this sector. So far, there have been reflections in different academic disciplines about the potentials of Blockchain in.

Is blockchain key to an accountable, digital government?

The greatest form of giving is anonymous to anonymous. Earlier this month, many of us were impressed by the launch of Lobby Lobsters. The 10k project features quirky Lobsters all ready to head to Washington and push decentralization further. Of course, you cannot lobby in Washington without funding. And jpegs cannot talk to our representatives. However, the 1, ETH they raised on the initial sale is all going to Coin Center — a leading non-profit focused on the policy issues facing cryptocurrencies. They engage in research, educate policymakers, and advocate for sensible regulatory approaches to this technology. Now, since the initial minting price at 0. This Tweet from Santiago really opened our eyes to a different light:.


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accountability in blockchain

Springer Professional. Back to the search result list. Table of Contents. Hint Swipe to navigate through the chapters of this book Close hint.

This study aims to offer a bibliometric and coding analysis of blockchain articles published in the accounting, auditing and accountability fields. Nonscientific sources such as nonpeer-reviewed books and white papers were excluded.

This New Blockchain Protocol Wants To Create Accountability For Social Impact

The promises that this technology can be a solution to many of society's present problems have drawn attention from all sectors, including development aid. The historical recognition of potential and actual corruption resulting from development aid sparked a rise in demands for more transparency and accountability in this sector. So far, there have been reflections in different academic disciplines about the potentials of Blockchain in this area. However, little empirical investigation has been conducted to understand the technological and institutional enablers and barriers for its adoption in the development aid sector. This study aims to take initial steps toward such understanding with a focus on the potential role for Blockchain Technology in financial aid flows through an analysis of the donors' perspectives. Our research is based on diverse qualitative material.


Tracking & Accountability for Humanitarian Aid Distribution

A CPA by trade, Williams took office in and since then says he has seen several examples of government agencies with trouble accounting for large sums of money. According to Williams, the solution to the problem can be summed up in one word: blockchain. Not everyone agrees that immutability is strictly possible or always desirable , but the fact remains: digital ledger technologies like blockchain are different than traditional databases. Unlike relational databases, for instance, whose files can be overwritten, blockchain can provide a theoretically permanent record of transactions in the ledger. The question of whether blockchain for government can provide an accurate accounting of spending at large depends not just on the widespread deployment of the technology among the government and its suppliers, but that the data entered into the ledger is accurate in the first place. Get your ticket now. Experts disagree on what constitutes trustworthy data. The World Economic Forum , for instance, has recommended ruling out blockchain applications involving physical assets because doing so involves coming up with a digital equivalent to the physical asset.

Malaysia is exploring how blockchain technology can prevent irregular finances, cutting down on opportunities for corrupt practices.

Unraveling Transparency and Accountability in Blockchain

Advertising workflow software company Mediaocean and business design partner IBM iX launched a blockchain consortium for the digital media supply chain, the companies announced June The consortium — which comprises advertisers, agencies and publishers including Kellogg, Kimberly-Clark, Pfizer, Unilever and IBM Watson Advertising — will focus on strengthening transparency and accountability in digital advertising using blockchain, a permanent distributed ledger of online transactions or exchanges. Unlike a traditional database that is centrally located and maintained by one party, a blockchain record is shared among a network of users.


Will you recommend this website to others? If not, leave us a comment below on what you would like featured. Please leave this field empty. This blog is part of a series on blockchain technology, governance and its implications for e-Governance in India. I ended my last blog a fortnight back, asking whether Blockchain technology might provide a disruptive breakthrough in reforming governance processes.

Blockchain is used to trace distinct batches of ingredients as they move through the production process.

Buy now. Delivery included to Russia. Cooke, Zoe Paperback 04 Aug Are your customers looking for inexpensive business to generate a lot of money without getting trapped in taxes? Do you want to make sure that by buying one book they will come back and buy again and again? Then, you need this book in your library and your customers will never stop using it and giving it away!

Metrics details. Blockchain technology is swiftly entering the fields of humanitarian and development aid. While it has the potential to revolutionize the aid sector, e.


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