Ledger https://ledgerjournal.org/ojs/ledger <p><em>Ledger</em> is a peer-reviewed scholarly journal that publishes full-length original research articles on the subjects of cryptocurrency and blockchain technology, as well as any relevant intersections with mathematics, computer science, engineering, law, and economics.<em>&nbsp;&nbsp;</em>It is published online by the University Library System, University of Pittsburgh.</p> <p>The journal<em> Ledger</em>:</p> <ul> <li class="show">is open access to all readers,</li> <li class="show">does not charge fees to independent authors or authors with no institutional support,</li> <li class="show">employs a transparent peer-review process,</li> <li class="show">encourages authors to <a href="/ojs/public/journals/1/simplesign.html">digitally sign their manuscripts</a></li> </ul> <p>Authors planning to submit their work to the journal are strongly advised to examine <a href="/ojs/index.php/ledger/about/submissions#authorGuidelines">the Author Guidelines section of the website.</a></p> en-US <p>Authors who publish with this journal agree to the following terms:</p> <ol> <li>The Author retains copyright in the Work, where the term “Work” shall include all digital objects that may result in subsequent electronic publication or distribution.</li> <li>Upon acceptance of the Work, the author shall grant to the Publisher the right of first publication of the Work.</li> <li>The Author shall grant to the Publisher and its agents the nonexclusive perpetual right and license to publish, archive, and make accessible the Work in whole or in part in all forms of media now or hereafter known under a <a title="CC-BY" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>&nbsp;or its equivalent, which, for the avoidance of doubt, allows others to copy, distribute, and transmit the Work under the following conditions: <ol type="a"> <li>Attribution—other users must attribute the Work in the manner specified by the author as indicated on the journal Web site;</li> </ol> with the understanding that the above condition can be waived with permission from the Author and that where the Work or any of its elements is in the public domain under applicable law, that status is in no way affected by the license.</li> <li>The Author is able to enter into separate, additional contractual arrangements for the nonexclusive distribution of the journal's published version of the Work (e.g., post it to an institutional repository or publish it in a book), as long as there is provided in the document an acknowledgement of its initial publication in this journal.</li> <li>Authors are permitted and encouraged to post online a prepublication manuscript (but not the Publisher’s final formatted PDF version of the Work) in institutional repositories or on their Websites prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work. Any such posting made before acceptance and publication of the Work shall be updated upon publication to include a reference to the Publisher-assigned DOI (Digital Object Identifier) and a link to the online abstract for the final published Work in the Journal.</li> <li>Upon Publisher’s request, the Author agrees to furnish promptly to Publisher, at the Author’s own expense, written evidence of the permissions, licenses, and consents for use of third-party material included within the Work, except as determined by Publisher to be covered by the principles of Fair Use.</li> <li>The Author represents and warrants that: <ol type="a"> <li>the Work is the Author’s original work;</li> <li>the Author has not transferred, and will not transfer, exclusive rights in the Work to any third party;</li> <li>the Work is not pending review or under consideration by another publisher;</li> <li>the Work has not previously been published;</li> <li>the Work contains no misrepresentation or infringement of the Work or property of other authors or third parties; and</li> <li>the Work contains no libel, invasion of privacy, or other unlawful matter.</li> </ol> </li> <li>The Author agrees to indemnify and hold Publisher harmless from Author’s breach of the representations and warranties contained in Paragraph 6 above, as well as any claim or proceeding relating to Publisher’s use and publication of any content contained in the Work, including third-party content.</li> <li>The Author agrees to digitally sign the Publisher’s final formatted PDF version of the Work.</li> </ol> <p><span style="font-size: 75%;">Revised 7/16/2018. Revision Description: Removed outdated link.&nbsp;</span></p> ledger.editors@pitt.edu (Richard Ford Burley) e-journals@mail.pitt.edu (OJS Technical Support) Wed, 03 Apr 2024 09:33:39 -0400 OJS 3.3.0.13 http://blogs.law.harvard.edu/tech/rss 60 How Do Decentralized Finance Protocols Compare to Traditional Financial Products? A Taxonomic Approach https://ledgerjournal.org/ojs/ledger/article/view/360 <div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>This paper creates a new taxonomy of Decentralized Finance (DeFi) protocols following the methodology specifically tailored to information systems set out by Nickerson et al. (2013). This taxonomy provides a tool to classify DeFi protocols, allowing for a structured comparison with traditional financial mechanisms in the present-day (as included in this paper), as well as providing a repeatable procedure in order to track development of the space in the future. Further, the clustering of classified protocols facilitates the rapid identification of similar protocols beyond the mere identification of functions. The dimensions and characteristics of the taxonomy are discussed, as well as qualitative observations concerning the current DeFi landscape. Comparisons with traditional financial mechanisms highlight not only instances of one-to-one replacement of centralized instruments with decentralized alternatives, but also new innovations and products better suited to DeFi environments. Risks and opportunities around these inventions are also discussed.</p> </div> </div> </div> Mark Rüetschi, Carlo Campajola, Claudio J. Tessone Copyright (c) 2024 Mark Rüetschi, Carlo Campajola, Claudio J. Tessone https://creativecommons.org/licenses/by/4.0 https://ledgerjournal.org/ojs/ledger/article/view/360 Wed, 04 Sep 2024 00:00:00 -0400 Granger-Causal Effects of Consumer Behavior on NFT Sales https://ledgerjournal.org/ojs/ledger/article/view/312 <div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>An understanding of what influences the NFT market is valuable in such a speculative space, and predictors of directional shifts in NFT sales are beneficial to NFT users and investors alike. For these reasons, research was undertaken to determine if metrics relating to consumer behavior could predict NFT market sales. To begin, a Buyer Activity Metric and a Buyer Valuation Metric were calculated using open-access data regarding the NFT market. A three-variable vector autoregression (VAR) model was then constructed using these metrics and NFT sales data. Changes in monthly NFT sales were found to be Granger-caused by changes in both the Buyer Activity Metric and the Buyer Valuation Metric. Changes in each metric were determined to precede changes in NFT sales by up to four months. The associations were also determined to be unidirectional, indicating a clear cause-and-effect style relationship. Questions about these predictive abilities were then theoretically explored.</p> </div> </div> </div> Stoyan R. Angelov Copyright (c) 2024 Stoyan R. Angelov https://creativecommons.org/licenses/by/4.0 https://ledgerjournal.org/ojs/ledger/article/view/312 Tue, 28 May 2024 00:00:00 -0400 Market Neutral Liquidity Provision https://ledgerjournal.org/ojs/ledger/article/view/389 <div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>Automated Market Makers with concentrated liquidity have to date achieved market dominance among competing spot trading AMM models in Decentralized Finance. We shift the prevalent research focus on liquidity providers’ loss metrics, such as Impermanent Loss or Loss-Versus-Rebalancing, to a market neutral strategy. We derive a hedge portfolio which allows for concentrated liquidity provision while maintaining market neutrality. We present an example of the hedge portfolio and highlight the practical restrictions. The hedge portfolio consisting of options and futures requires a significant capital outlay compared to the amount of liquidity provided, but typically earns carry from futures contango.</p> </div> </div> </div> Basile Maire, Marcus Wunsch Copyright (c) 2024 Basile Maire, Marcus Wunsch https://creativecommons.org/licenses/by/4.0 https://ledgerjournal.org/ojs/ledger/article/view/389 Mon, 18 Nov 2024 00:00:00 -0500 Reconciling Open Interest with Traded Volume in Perpetual Swaps https://ledgerjournal.org/ojs/ledger/article/view/325 <div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>Perpetual swaps are derivative contracts that allow traders to speculate on, or hedge, the price movements of cryptocurrencies. Unlike futures contracts, perpetual swaps have no settlement or expiration in the traditional sense. The funding rate acts as the mechanism that tethers the perpetual swap to its underlying with the help of arbitrageurs. Open interest, in the context of perpetual swaps and derivative contracts in general, refers to the total number of outstanding contracts at a given point in time. It is a critical metric in derivatives markets as it can provide insight into market activity, sentiment and overall liquidity. It also provides a way to estimate a lower bound on the collateral required for every cryptocurrency market on an exchange. This number, cumulated across all markets on the exchange in combination with proof of reserves, can be used to gauge whether the exchange in question operates with unsustainable levels of leverage, which could have solvency implications. We find that open interest in Bitcoin perpetual swaps is systematically misquoted by some of the largest derivatives exchanges; however, the degree varies, with some exchanges reporting open interest that is wholly implausible to others that seem to be delaying messages of forced trades, i.e., liquidations. We identify these incongruities by analyzing tick-by-tick data for two time periods in 2023 by connecting directly to seven of the most liquid cryptocurrency derivatives exchanges.</p> </div> </div> </div> Ioannis Giagkiozis, Emilio Said Copyright (c) 2024 Ioannis Giagkiozis, Emilio Said https://creativecommons.org/licenses/by/4.0 https://ledgerjournal.org/ojs/ledger/article/view/325 Wed, 03 Apr 2024 00:00:00 -0400 Decentralization, Blockchains, and the Development of Smart Communities in Economically Challenging Environments https://ledgerjournal.org/ojs/ledger/article/view/302 <div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>Current implementations of blockchain technologies for smart cities assume environments with ample socio-technical resources. In this paper, we analyze four particular cases to show how blockchains can be used to create smart communities within under-developed and resource-poor environments. In these contexts, blockchains were critical in developing and maintaining trust within the community while meeting specific social needs. Our analysis of these specific cases was then used to derive a definition of a “smart community”. We provide a schematic outline of the foundational elements for the development of smart communities using blockchain technology. The goal of our paper is to show that blockchains hold promise not just for building smart cities in resource-rich contexts, but also for building smart communities in resource-impoverished contexts using a bottom-up, problem-driven approach.</p> </div> </div> </div> Brett Bourbon, Renita Murimi Copyright (c) 2024 Brett Bourbon, Renita Murimi https://creativecommons.org/licenses/by/4.0 https://ledgerjournal.org/ojs/ledger/article/view/302 Fri, 07 Jun 2024 00:00:00 -0400